WO2011052306A1 - 車両用制御装置 - Google Patents
車両用制御装置 Download PDFInfo
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- WO2011052306A1 WO2011052306A1 PCT/JP2010/065978 JP2010065978W WO2011052306A1 WO 2011052306 A1 WO2011052306 A1 WO 2011052306A1 JP 2010065978 W JP2010065978 W JP 2010065978W WO 2011052306 A1 WO2011052306 A1 WO 2011052306A1
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- rotational speed
- torque
- engagement
- phase
- shift
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
- B60W10/08—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of electric propulsion units, e.g. motors or generators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W20/00—Control systems specially adapted for hybrid vehicles
- B60W20/40—Controlling the engagement or disengagement of prime movers, e.g. for transition between prime movers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/02—Conjoint control of vehicle sub-units of different type or different function including control of driveline clutches
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/10—Conjoint control of vehicle sub-units of different type or different function including control of change-speed gearings
- B60W10/11—Stepped gearings
- B60W10/115—Stepped gearings with planetary gears
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
- B60W30/18—Propelling the vehicle
- B60W30/19—Improvement of gear change, e.g. by synchronisation or smoothing gear shift
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/04—Smoothing ratio shift
- F16H61/06—Smoothing ratio shift by controlling rate of change of fluid pressure
- F16H61/061—Smoothing ratio shift by controlling rate of change of fluid pressure using electric control means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/40—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism comprising signals other than signals for actuating the final output mechanisms
- F16H63/50—Signals to an engine or motor
- F16H63/502—Signals to an engine or motor for smoothing gear shifts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/42—Drive Train control parameters related to electric machines
- B60L2240/423—Torque
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W20/00—Control systems specially adapted for hybrid vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/08—Electric propulsion units
- B60W2710/083—Torque
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
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- F16H59/38—Inputs being a function of speed of gearing elements
- F16H59/42—Input shaft speed
- F16H2059/425—Rate of change of input or turbine shaft speed
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/04—Smoothing ratio shift
- F16H2061/0425—Bridging torque interruption
- F16H2061/0433—Bridging torque interruption by torque supply with an electric motor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/36—Inputs being a function of speed
- F16H59/46—Inputs being a function of speed dependent on a comparison between speeds
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
Definitions
- the present invention relates to an input member that is drivingly connected to a rotating electrical machine as a driving force source, an output member that is drivingly connected to a wheel, and the rotational speed of the input member is changed at a gear ratio of each gear and transmitted to the output member.
- the present invention relates to a vehicular control device that controls a vehicular drive device including the transmission.
- a vehicle drive device used in such a vehicle
- the rotational drive force of an engine and a rotating electrical machine as a drive force source is set for each shift stage set by the transmission.
- a vehicle drive device configured to output a gear with a gear ratio.
- a transmission device for a vehicle drive device described in Patent Document 1 includes a plurality of engagement elements, and switches a plurality of shift speeds by controlling engagement and release of the plurality of engagement elements, and an input member. The rotation speed of the gears can be changed at a gear ratio of each gear and transmitted to the output member.
- torque that is input to the transmission via the input member from the rotating electrical machine as the driving force source in the inertia phase after the end of the torque phase in order to reduce the shift shock. May be controlled.
- a downshift in a state where the rotating electrical machine performs regeneration from a gear position having a small gear ratio to a gear stage having a large gear ratio.
- the drive force fluctuation is suppressed by starting the shift after setting the regenerative torque of the rotating electrical machine to zero.
- an engagement element that is generally configured using a friction material such as a brake or a clutch
- one shift operation is performed depending on the rotational speed difference between the two engagement elements engaged with each other, the temperature of the engagement element, or the like.
- the friction coefficient does not become a constant value but may vary. Therefore, even if the hydraulic pressure command value in the engagement side element is gradually increased at a constant rate as in the vehicle control device described in Patent Document 1, the engagement side element is actually caused by the fluctuation of the friction coefficient.
- the transmission torque capacity at will increase irregularly. As a result, the torque transmitted to the output member also fluctuates, which causes the driving feeling of the driver of the vehicle to deteriorate.
- an input member that is drivingly connected to a rotating electrical machine as a driving force source, an output member that is drivingly connected to a wheel, a plurality of engagement elements, and a plurality of shift stages that are switchable
- a vehicle drive device including a transmission device that changes the rotational speed of the input member at a gear ratio of each gear and transmits the transmission to the output member, and engages and releases the plurality of engagement elements.
- the characteristic configuration of the vehicle control device that controls the shift of the gear stage that is performed at least through the torque phase in the transmission includes a phase determination unit that determines the end of the torque phase during the shift operation, and the phase determination unit After the determination means determines that the torque phase has ended, the input torque change is calculated using the input torque change amount derived so that the rotational speed change rate of the input member becomes the target rotational speed change rate.
- a rotating electrical machine control means for controlling the torque of the rotating electrical machine so as to increase or decrease the input torque input to the input member by an amount according to the switching direction of the shift stage, and a rotational speed change rate of the input member.
- Engagement control means for feedback-controlling the hydraulic pressure supplied to the engagement side element, which is the engagement element on the side engaged after the shift of the shift speed, so as to achieve the target rotational speed change rate. is there.
- torque phase refers to the ratio of the rotational speed of the input member to the rotational speed of the output member from the time when the engagement-side element begins to have a transmission torque capacity after the target gear position in the transmission is changed. Is a period from when the speed fluctuates to the time when the gear ratio of the target gear stage after the gear shift becomes more than the gear ratio of the target gear stage before the gear shift.
- Drive coupling refers to a state in which two rotating elements are coupled so as to be able to transmit a driving force, and the two rotating elements are coupled so as to rotate integrally, or the two rotation elements.
- Such a transmission member include various members that transmit rotation at the same speed or a variable speed, and include, for example, a shaft, a gear mechanism, a belt, a chain, and the like.
- the rotating electrical machine control unit controls the torque of the rotating electrical machine, and switches the input torque input to the input member to the shift stage. Increase or decrease depending on direction.
- the rotational speed of the input member changes from the rotational speed according to the gear ratio before the gear change to the rotation speed according to the gear ratio after the gear change.
- the rotational speed of the input member should change at a time change rate corresponding to the change amount of the input torque in accordance with the laws of mechanics.
- the transmission torque capacity in the engagement side element should be kept substantially constant.
- the rotating electrical machine control means changes the input torque to the input member by the amount of change in the input torque that is derived so that the rotational speed change rate of the input member becomes the target rotational speed change rate.
- the torque of the rotating electrical machine is controlled so as to increase or decrease according to the switching direction, and the engagement control means supplies the engagement side element with the rotational speed change rate of the input member so as to become the target rotational speed change rate.
- Feedback control of hydraulic pressure whereby, the rotational speed of the input member can be changed at a time change rate corresponding to the amount of change in the input torque, and the transmission torque capacity in the engagement side element can be maintained substantially constant.
- the effect of irregular fluctuations in the coefficient of friction in the engagement element due to the rotational speed difference between the two engagement elements engaged with each other, the temperature of the engagement element, etc., is supplied to the engagement side element. Absorbed by hydraulic pressure, the transmission torque capacity of the engagement side element can be maintained substantially constant. Thereby, the vehicle control apparatus which can suppress the torque fluctuation transmitted to the output member is realized.
- the rotating electrical machine control means is preferably configured to maintain a constant value in a state where the input torque is increased or decreased.
- the target rotational speed change rate of the input member that is derived according to the amount of change of the input torque becomes a constant value that does not change with time.
- the target rotation speed change rate is a control target for the engagement control means to feedback control the hydraulic pressure supplied to the engagement side element. Therefore, it becomes easy to maintain the transmission torque capacity of the engagement side element substantially constant by feedback control of the engagement control means. Therefore, it is possible to easily suppress the torque fluctuation of the output member during the speed change operation.
- the target rotational speed change rate is determined on the basis of the gear ratio before and after the shift speed change so that the inertia phase during the shift operation can be completed at the target time.
- inertia phase means that the ratio of the rotational speed of the input member to the rotational speed of the output member fluctuates and the speed ratio side of the target gear stage after the gear shift is larger than the gear ratio of the target gear speed before the gear shift. Until the time when the ratio of the rotational speed of the input member to the rotational speed of the output member becomes the gear ratio of the target gear stage after the shift.
- the engagement control means maintains the hydraulic pressure supplied to the engagement side element at a constant value, and the rotating electrical machine control means synchronizes the actual rotational speed of the input member with the post-shift estimated rotational speed.
- the torque of the rotating electrical machine be feedback-controlled.
- the actual rotation speed of the input member is smoothly brought close to the estimated rotation speed after the shift, and the shift shock is effectively generated when the engagement side element is brought into the fully engaged state at the end of the shift operation. Can be suppressed.
- a release control means for feedback-controlling the hydraulic pressure supplied to the disengagement side element as the disengaged engagement element so that the differential rotation speed, which is the difference between the two, is in a state where the differential rotation speed is substantially constant
- an engagement control means for increasing the supply hydraulic pressure to the engagement side element, and the phase determination means has a release side hydraulic pressure command value that is a command value of the supply hydraulic pressure to the release side element, One or both of detecting that the predetermined release determination value corresponding to the hydraulic pressure at which the transmission torque capacity in the release-side element becomes zero, and detecting that the differential rotational speed has decreased to zero On the condition that the torque phase is It is preferable that the determined structure and the completion.
- substantially constant means that it is constant to such an extent that it can be considered that there is no fluctuation in terms of control even if there is a slight fluctuation.
- the engagement control means increases the hydraulic pressure supplied to the engagement side element in a state where the differential rotation speed is maintained substantially constant by feedback control by the release control means. In this state, the differential rotational speed is maintained at a substantially constant state by the feedback control system by the release control means. If the engagement control means continues to increase the supply hydraulic pressure to the engagement side element, the supply hydraulic pressure to the release side element will eventually drop to a predetermined value or less, and the release side element will not have the transmission torque capacity and will be released. The feedback control system by the control means cannot absorb the change in the actual rotational speed of the input member. At this time, the differential rotational speed becomes zero, and the ratio of the rotational speed of the input member to the rotational speed of the output member changes from the speed ratio of the target speed stage before the shift to the speed ratio side of the target speed stage after the speed change.
- FIG. 1 is a schematic diagram showing a schematic configuration of a vehicle drive device 1 according to the present embodiment.
- a vehicle 3 equipped with a vehicle drive device 1 is a hybrid vehicle including both an engine 11 and a rotating electrical machine 12 as driving force sources.
- the vehicle drive device 1 includes an input shaft I that is drivingly connected to the engine 11 and the rotating electrical machine 12 as a driving force source, an output shaft O that is drivingly connected to the wheels 17, and a plurality of engagement elements C1, B1.
- the vehicle 3 has the vehicle drive device 1 as a control target, and controls the engagement and release of the plurality of engagement elements C1, B1,. And a vehicle control unit 2 that controls the shift of the gear position that is performed through the process (see FIG. 3).
- the input shaft I and the output shaft O correspond to “input member” and “output member” in the present invention, respectively, and the vehicle control unit 2 corresponds to “vehicle control device” in the present invention. .
- the rotating electrical machine control unit 22 that controls the torque of the rotating electrical machine 12 so as to increase or decrease the input torque change amount ⁇ T according to the shift direction of the gear, and the rotational acceleration A of the input shaft I becomes the target rotational acceleration A0.
- an engagement-side hydraulic control unit 28 that feedback-controls the hydraulic pressure supplied to the engagement-side element Ee.
- the vehicle control unit 2 is realized that can suppress fluctuations in the transmission torque capacity of the engagement side element Ee due to a change in the friction coefficient and can suppress fluctuations in torque transmitted to the output shaft O.
- the vehicle drive device 1 and the vehicle control unit 2 according to the present embodiment will be described in detail.
- the engine 11 is an internal combustion engine that is driven by fuel combustion.
- various known engines such as a gasoline engine and a diesel engine can be used.
- the engine 11 is drivingly connected to the input shaft I via the input clutch 14.
- an engine output shaft Eo such as a crankshaft of the engine 11 is drivingly connected to the input shaft I via the input clutch 14.
- the input shaft I is drivingly coupled so as to rotate integrally with a rotor (not shown) of the rotating electrical machine 12.
- the rotating electrical machine 12 includes a rotor and a stator (not shown), functions as a motor (rotary machine) that generates power by receiving power supply, and generates power by receiving power supply. It is possible to fulfill the function as a generator (generator). Therefore, the rotary electric machine 12 is electrically connected to a power storage device (not shown). In this example, a battery is used as the power storage device. Note that it is also preferable to use a capacitor or the like as the power storage device.
- the rotating electrical machine 12 is powered by receiving power supplied from the battery, or supplies the battery with power generated by the driving force transmitted from the wheels 17 to store the power.
- the power generation by the rotating electrical machine 12 may be referred to as “regeneration”.
- the rotor of the rotating electrical machine 12 that rotates integrally with the input shaft I is drivingly connected to the transmission 13.
- the transmission 13 is a stepped automatic transmission having a plurality of gears with different gear ratios.
- the transmission 13 includes a gear mechanism such as a planetary gear mechanism and a plurality of engagement elements B1, C1,.
- the plurality of engagement elements B1, C1,... Are friction engagement elements such as clutches and brakes each having a friction material.
- These engagement elements B1, C1,... Are clutches (including brakes, and so on) that can continuously control increase / decrease in the transmission torque capacity by controlling the supplied hydraulic pressure. ing.
- a clutch for example, a wet multi-plate clutch or the like is preferably used.
- FIG. 1 schematically shows a first clutch C1 and a first brake B1 as an example of a plurality of engagement elements.
- the “pre-control phase Pp” is transmitted from the engagement element (for example, the first brake B1 at the time of 3-2 downshift) to be engaged from the time when the target gear position is changed in the transmission 13.
- the vehicle control unit 2 determines the phase at each time point during the shift operation, and the output torque of the rotating electrical machine 12, the hydraulic pressure supplied to each engagement element, and the like are determined according to the determined phase.
- the configuration is controlled. Details will be described later.
- the transmission 13 shifts the rotational speed of the input shaft I at a predetermined gear ratio set for each gear, converts the torque, and transmits the torque to the output shaft O. Torque transmitted from the transmission 13 to the output shaft O is distributed and transmitted to the left and right wheels 17 via the differential device 16.
- the vehicle drive device 1 has a uniaxial configuration in which the input shaft I and the output shaft O are arranged coaxially.
- the vehicle control unit 2 for controlling the vehicle drive device 1 functions as a core member that controls the operation of each part of the vehicle drive device 1.
- the vehicle control unit 2 includes an arithmetic processing unit such as a CPU as a core member, and a RAM (random access memory) configured to be able to read and write data from the arithmetic processing unit, and an arithmetic processing unit. It has a storage device such as a ROM (Read Only Memory) configured to be able to read data (not shown).
- the functional units 21 to 36 of the vehicle control unit 2 are configured by software (program) stored in a ROM or the like, hardware such as a separately provided arithmetic circuit, or both. Each of these functional units 21 to 36 is configured to be able to exchange information with each other. Further, the vehicle drive device 1 includes a plurality of sensors Se1 to Se4 provided in each part of the vehicle 3 in order to appropriately realize each function by the respective function parts 21 to 36.
- the functional units 21 to 36 of the vehicle control unit 2 will be described in detail.
- the engine rotation speed sensor Se1 is a sensor that detects the rotation speed of the engine output shaft Eo (engine 11).
- the rotor rotation sensor Se ⁇ b> 2 is a sensor that detects the rotational position of the rotor with respect to the stator of the rotating electrical machine 12.
- the rotational position of the rotor by the rotor rotation sensor Se2 is detected with very high accuracy in order to precisely determine the current command value and the current phase for driving the rotating electrical machine 12.
- a resolver is used as such a rotor rotation sensor Se2.
- the output shaft rotation speed sensor Se3 is a sensor that detects the rotation speed of the output shaft O.
- the accelerator opening detection sensor Se4 is a sensor that detects the accelerator opening by detecting the operation amount of the accelerator pedal 18. Information indicating the detection results of these sensors Se1 to Se4 is output to the vehicle control unit 2.
- the engine control unit 21 is a functional unit that controls the operation of the engine 11.
- the engine control unit 21 functions as engine control means.
- the engine control unit 21 performs a process of determining an engine operating point and controlling the engine 11 to operate at the engine operating point.
- the engine operating point is a control command value that represents a control target point of the engine 11, and is determined by the rotational speed and torque. More specifically, the engine operating point is a command value representing a control target point of the engine 11 determined in consideration of the vehicle required output and the optimum fuel consumption, and is determined by the torque command value and the rotation speed command value.
- the engine control part 21 controls operation
- the target gear stage determination unit 26 is a functional unit that determines a target gear stage in the transmission 13.
- the target shift speed determining unit 26 functions as target shift speed determining means.
- the target gear position determination unit 26 determines a target gear position in the transmission 13 based on the accelerator opening and the vehicle speed of the vehicle 3. In order to determine such a target shift speed, the target shift speed determination unit 26 refers to a shift map stored in a memory (not shown).
- the shift map is a map that defines the relationship between the accelerator opening and the vehicle speed and the target shift stage in the transmission 13.
- the shift map has multiple upshift lines and multiple downshift lines. When the vehicle speed and accelerator opening change and the upshift line or downshift line is crossed on the shift map, the target shift stage is determined.
- the unit 26 determines a new target gear position in the transmission 13.
- downshift means shifting from a gear stage having a small gear ratio to a gear ratio. Means switching to a higher gear position.
- the target shift speed determined by the target shift speed determination unit 26 is output to the switching control unit 27.
- the switching control unit 27 is a functional unit that performs control to switch the shift stage in the transmission 13 when the target shift stage determined by the target shift stage determination unit 26 is changed.
- the switching control unit 27 functions as a switching control unit.
- the switching control unit 27 switches the shift speed in the transmission 13 by controlling the hydraulic pressure supplied to the plurality of engagement elements C1, B1,... According to the new target shift speed.
- the switching control unit 27 releases one of the engagement elements engaged before the shift, and engages one of the engagement elements released before the shift. For example, as described above, when the 3-2 downshift is performed, the switching control unit 27 releases the first clutch C1 and engages the first brake B1.
- engagement side element Ee an engagement element on the side that is engaged after switching of the shift stage, such as the first brake B1 at the time of 3-2 downshifting.
- release side element Er an engagement element on the side that is released after the shift stage is switched, such as the first clutch C1 during the 3-2 downshift.
- the engagement side hydraulic pressure control unit 28 is a functional unit that controls the supply hydraulic pressure of hydraulic oil to the engagement element (engagement side element Ee) to be engaged.
- the engagement side hydraulic control unit 28 functions as an engagement control unit.
- the engagement side hydraulic pressure control unit 28 generates an engagement side hydraulic pressure command value Ce that is a command value of the hydraulic pressure supplied to the engagement side element Ee, and the engagement side hydraulic pressure command value Ce is provided in the transmission 13.
- the hydraulic pressure supplied to the engagement side element Ee is controlled by outputting to a control valve (not shown) corresponding to the engagement side element Ee and controlling the operation of the control valve according to the engagement side hydraulic pressure command value Ce. To do.
- the engagement side hydraulic control unit 28 supplies the precharge hydraulic pressure to the engagement side element Ee when the target shift speed is changed to the pre-control phase Pp, and the subsequent engagement is performed. Prepare for operation. Thereafter, on the condition that a differential rotational speed ⁇ N, which will be described later, becomes substantially constant, the engagement side hydraulic pressure control unit 28 increases the supply hydraulic pressure to the engagement side element Ee from the pre-control phase Pp to the torque phase Pt. At this time, the engagement side hydraulic control unit 28 increases the supply hydraulic pressure to the engagement side element Ee at a constant rate of change by increasing the engagement side hydraulic pressure command value Ce at a preset constant rate of change.
- the engagement side hydraulic pressure control unit 28 feedback-controls the hydraulic pressure supplied to the engagement side element Ee so that the rotational acceleration of the input shaft I becomes a predetermined target rotational acceleration in the inertia phase Pi. To do.
- the rotating electrical machine control unit 22 derives a target rotational acceleration, which will be described later, from the input torque to the input shaft I by the rotating electrical machine 12 over substantially the entire inertia phase Pi excluding the final stage Pie of the shift process. Control is performed so that the input torque is maintained at a constant value while being increased or decreased by the input torque change amount ⁇ T derived so as to be the target rotational acceleration A0 of the input shaft I derived by the unit 35.
- the engagement-side hydraulic control unit 28 is configured such that an actual rotational acceleration A of the input shaft I derived by an input shaft rotational speed deriving unit 33 described later is an input shaft derived by a target rotational acceleration deriving unit 35 described later.
- the engagement side hydraulic pressure command value Ce is sequentially corrected so that the target rotational acceleration A0 is I, and the hydraulic pressure supplied to the engagement side element Ee is controlled.
- the friction engagement element configured to include a friction material such as the first brake B1 and the first clutch C1 used in the present embodiment
- two rotation elements (non-rotation) engaged with each other are provided.
- the friction coefficient of the friction material does not become a constant value and may fluctuate irregularly even during one speed change operation due to a difference in rotational speed between the members (including the same below) and the temperature of the friction engagement element. Therefore, for example, even if the engagement-side hydraulic command value Ce is changed at a predetermined change rate set in advance, the transmission torque capacity in the engagement-side element Ee is actually set to a predetermined value by changing the friction coefficient. The rate of change does not completely match, and it fluctuates irregularly. As a result, the torque transmitted to the output shaft O may also fluctuate.
- the rotating electrical machine control unit 22 increases or decreases the input torque to the input shaft I by the rotating electrical machine 12 by a predetermined input torque change amount ⁇ T. Maintain the input torque at a constant value.
- the actual rotational acceleration A of the input shaft I should be kept at a constant value.
- the transmission torque capacity in the engagement element is kept substantially constant. It should be.
- the input side to the input shaft I by the rotating electrical machine 12 is increased or decreased by the input torque change amount ⁇ T derived based on the target rotational acceleration A0 of the input shaft I, and the engagement side
- the hydraulic control unit 28 performs feedback control of the hydraulic pressure supplied to the engagement side element Ee so that the actual rotational acceleration A of the input shaft I becomes the target rotational acceleration A0.
- the influence of irregular fluctuations in the friction coefficient of the friction material during one speed change operation is absorbed by the supply hydraulic pressure control to the engagement side element Ee, and the transmission torque capacity of the engagement side element Ee is absorbed. Can be maintained substantially constant. Therefore, the torque fluctuation of the output shaft O during the shifting operation can be easily suppressed.
- the engagement side hydraulic control unit 28 maintains the supply hydraulic pressure to the engagement side element Ee at a constant value.
- the command value Ce is fixed to a constant value.
- the actual rotational speed NI of the input shaft I approaches the post-shift estimated rotational speed Na derived by an estimated rotational speed deriving unit 34 described later (see, for example, FIGS. 2 and 3).
- the actual rotational speed NI of the input shaft I changes by 60 to 95% or more of the rotational speed difference between the estimated rotational speed Nb before the shift and the estimated rotational speed Na after the shift.
- the release side hydraulic pressure control unit 29 is a functional unit that controls the hydraulic pressure of hydraulic fluid supplied to the engagement element (release side element Er) on the released side.
- the release side hydraulic control unit 29 functions as a release control means.
- the release side hydraulic pressure control unit 29 generates a release side hydraulic pressure command value Cr that is a command value of the hydraulic pressure supplied to the release side element Er, and the release side hydraulic pressure command value Cr is provided in the transmission 13.
- the hydraulic pressure supplied to the release-side element Er is controlled by outputting to a control valve (not shown) corresponding to Er and controlling the operation of the control valve in accordance with the release-side hydraulic pressure command value Cr.
- the disengagement hydraulic control unit 29 when the supply of the precharge hydraulic pressure to the engagement side element Ee is completed, the difference from the pre-control phase Pp to the torque phase Pt.
- the hydraulic pressure supplied to the release-side element Er is feedback-controlled so that the rotational speed ⁇ N becomes substantially constant.
- the release side hydraulic pressure control unit 29 is configured so that the release side hydraulic pressure command value is maintained so that the differential rotational speed ⁇ N derived by the differential rotational speed deriving part 32 described later is substantially equal to a predetermined minute slip amount. Correct Cr sequentially. Further, when the end of the torque phase Pt is determined, the release side hydraulic control unit 29 reduces the release side hydraulic command value Cr to zero, and maintains the release side hydraulic command value Cr as it is in the inertia phase Pi. .
- the phase determination unit 31 is a functional unit that determines a phase at each time point during the shifting operation.
- the phase determination unit 31 functions as a phase determination unit.
- the phase determination unit 31 determines whether the phase at each time point during the shifting operation is in the pre-control phase Pp, the torque phase Pt, or the inertia phase Pi.
- the phase state determined by the phase determination unit 31 is output to the rotating electrical machine control unit 22, the engagement side hydraulic control unit 28, and the release side hydraulic control unit 29, and control by each functional unit in each phase is executed. .
- the disengagement hydraulic pressure control unit 29 starts feedback control of the hydraulic pressure supplied to the disengagement element Er so that the differential rotation speed ⁇ N becomes substantially constant.
- the rotational speed of the input shaft I changes in the opposite direction to the post-shift estimated rotational speed Na with respect to the pre-shift estimated rotational speed Nb (decreases in downshift, It rises in an upshift). This corresponds to the fact that the actual gear ratio changes in the direction opposite to the gear ratio of the target gear stage after the shift with respect to the gear ratio of the target gear stage before the gear shift.
- the engagement side hydraulic control unit 28 increases the supply hydraulic pressure to the engagement side element Ee at a constant rate of change. Meanwhile, the feedback control by the release side hydraulic control unit 29 is continuously performed continuously. In a state where the hydraulic pressure supplied to the engagement side element Ee is equal to or lower than the stroke end pressure, the engagement side element Ee does not have a transmission torque capacity. The rotational speed ⁇ N also maintains a substantially constant state. When the supply hydraulic pressure to the engagement side element Ee rises and eventually reaches the stroke end pressure, the engagement side element Ee starts to have a transmission torque capacity and the torque phase Pt is actually started.
- the increase of the transmission torque capacity in the engagement side element Ee acts as a disturbance on the feedback control system by the release side hydraulic control unit 29. That is, since the actual rotational speed NI of the input shaft I tends to change (increases in the downshift and decreases in the upshift) due to the increase in the transmission torque capacity in the engagement side element Ee, the differential rotational speed ⁇ N also changes. Try to (decrease in both downshift and upshift). Thus, in a state where the supply hydraulic pressure to the disengagement side element Er is feedback controlled so that the differential rotation speed ⁇ N is substantially constant, the differential rotation speed is caused by the increase in the supply hydraulic pressure to the engagement side element Ee. A change occurs in ⁇ N. The timing at which such a difference in rotational speed ⁇ N changes corresponds to the actual start timing of the torque phase Pt on a one-to-one basis.
- the phase determination unit 31 determines that the torque phase Pt has been started on the condition that a phenomenon that occurs with a change in the differential rotation speed ⁇ N due to an increase in the hydraulic pressure supplied to the engagement side element Ee is detected.
- the release side hydraulic control unit 29 changes the change.
- the supply hydraulic pressure to the release side element Er is feedback-controlled so as to cancel.
- the actual rotational speed NI of the input shaft I further changes in the opposite direction (decreases in the downshift and increases in the upshift), the differential rotational speed ⁇ N increases and returns to the original state again.
- the differential rotation speed ⁇ N is outlined in FIGS.
- the release side hydraulic pressure command value Cr is greatly reduced to greatly reduce the hydraulic pressure supplied to the release side element Er. Therefore, in the present embodiment, the phenomenon that occurs with the change in the differential rotational speed ⁇ N includes a temporal change in the differential rotational speed ⁇ N itself and a temporal change in the release side hydraulic pressure command value Cr.
- the phase determination unit 31 is a phenomenon that occurs with a change in the differential rotation speed ⁇ N caused by an increase in the hydraulic pressure supplied to the engagement side element Ee.
- the difference rotation speed ⁇ N has decreased from a substantially constant state by a predetermined start determination difference rotation speed ⁇ N0 or more
- the release side hydraulic pressure command value Cr has decreased by a predetermined start determination change amount ⁇ Cr0 or more with reference to a value in a state where the differential rotational speed ⁇ N is substantially constant,
- the phase determination unit 31 detects that the differential rotational speed ⁇ N has dropped from a substantially constant state to a predetermined start determination differential rotational speed ⁇ N0 or more, and the release side hydraulic pressure command value Cr is substantially constant. It is determined that the torque phase Pt has been started on the condition that one of the detections of a decrease by a predetermined start determination change amount ⁇ Cr0 or more is made based on the value in this state.
- the detection target (1) is because the phenomenon (1) first appears in a one-to-one correspondence with the actual start timing of the torque phase Pt.
- the start of the torque phase Pt during the shift operation can be determined very accurately.
- the start determination differential rotational speed ⁇ N0 it is appropriately determined that the differential rotational speed ⁇ N has decreased due to the influence of the feedback control system by the disengagement hydraulic control unit 29 due to the increase of the transmission torque capacity in the engagement side element Ee. It is good to set a value that can be done.
- an integrated value of a predetermined coefficient set in advance based on an experiment or the like and the differential rotational speed ⁇ N can be set as the start determination differential rotational speed ⁇ N0.
- the phenomenon (1) appears only once during the speed change operation, and disappears relatively early due to the action of the feedback control system by the release side hydraulic control unit 29. It cannot be said that there is no possibility of failure.
- the control responsiveness of the feedback control system by the disengagement hydraulic control unit 29 is set high, there is a possibility that the decrease width of the differential rotational speed ⁇ N becomes extremely small and cannot be detected.
- the release side hydraulic command value Cr since the release side hydraulic command value Cr only decreases without increasing, the change amount of the release side hydraulic command value Cr based on the predetermined value only changes in one direction and increases.
- the detection is always possible and does not fail. Therefore, by determining that the torque phase Pt has been started with (2) as a detection target and on the condition of the detection of (2), it is possible to accurately and reliably determine the start of the torque phase Pt during the shift operation.
- the end point of the torque phase Pt is a point at which the actual gear ratio starts to fluctuate toward the gear ratio side of the target gear stage after the shift from the gear ratio of the target gear stage before the gear shift.
- feedback control of the hydraulic pressure supplied to the disengagement element Er is performed so that the differential rotational speed ⁇ N is substantially constant, and the actual gear ratio becomes the speed ratio of the target gear stage before the gear shift.
- the actual gear ratio changes to the gear ratio side of the target gear stage after the shift, and eventually coincides with the gear ratio of the target gear stage before the gear shift, and with respect to the gear ratio of the target gear stage before the gear shift.
- the time point at which the target gear stage after shifting starts to change toward the speed ratio side is the end point of the torque phase Pt.
- the release-side hydraulic control unit 29 will eventually release.
- the supply hydraulic pressure to the side element Er becomes equal to or less than the stroke end pressure, and the release side element Er has no transmission torque capacity.
- the feedback control system by the disengagement hydraulic control unit 29 cannot absorb the change in the actual rotational speed NI of the input shaft I (up in the downshift and decreased in the upshift).
- the differential rotational speed ⁇ N becomes zero, and the actual gear ratio starts to fluctuate toward the speed ratio side of the target speed stage after the speed change from the speed ratio of the target speed stage before the speed change.
- the phase determination unit 31 uses the torque on the condition that the release side hydraulic pressure command value Cr is equal to or less than a predetermined release determination value Cr1 corresponding to the hydraulic pressure at which the transfer torque capacity in the release side element Er becomes zero. It is determined that the phase Pt has ended.
- release determination value Cr1 a value corresponding to a hydraulic pressure equal to or lower than the stroke end pressure, which is a hydraulic pressure at which the transmission torque capacity in the release side element Er becomes zero, is set.
- a value corresponding to the stroke end pressure which is the maximum value of the hydraulic pressure at which the transmission torque capacity in the release side element Er becomes zero, is set.
- the release side hydraulic control unit 29 continuously performs feedback control, and the release side hydraulic command value Cr is sequentially updated.
- the release side hydraulic pressure command value Cr that is sequentially updated, the end of the torque phase Pt during the shift operation can be determined very accurately.
- the phase determination unit 31 when the phase determination unit 31 detects that the differential rotation speed ⁇ N has decreased to zero after determining that the torque phase Pt has started, the release side hydraulic pressure command value It is determined that the torque phase Pt has ended even before Cr becomes the release determination value Cr1 or less. This is because, as described above, the time point when the differential rotational speed ⁇ N decreases to zero is the time point that is regarded as the end point of the torque phase Pt in the present embodiment. Further, in the present embodiment, the phase determination unit 31 also determines that the release side hydraulic command value Cr is equal to or greater than the engagement side hydraulic command value Ce that is equal to or greater than a predetermined end determination value Ce1. It is determined that the torque phase Pt has ended even before the release determination value Cr1 or less.
- Such an end determination value Ce1 includes an engagement-side oil pressure command value Ce at which the disengagement-side oil pressure command value Cr becomes the release determination value Cr1 (here, this is referred to as a full-release engagement-side oil pressure command value Ce2). It is preferable to set a learning value of).
- a learning value can be, for example, an average value of a plurality of full-release engagement side hydraulic pressure command values Ce2 stored in a memory (not shown) or the like.
- the phase determination unit 31 (A) detects that the release side hydraulic pressure command value Cr is equal to or less than the predetermined release determination value Cr1, and (B) determines that the torque phase Pt has started. Detection that the differential rotational speed ⁇ N has decreased to zero after being performed, and (C) detection that the engagement side hydraulic pressure command value Ce is equal to or greater than a predetermined end determination value Ce1; It is determined that the torque phase Pt has ended under any one of the conditions. By doing so, it is possible to accurately and reliably determine the end of the torque phase Pt during the shift operation.
- the differential rotational speed deriving unit 32 is a functional unit that derives a differential rotational speed ⁇ N that is a rotational speed difference between the actual rotational speed NI of the input shaft I and a predetermined target rotational speed.
- the differential rotation speed deriving unit 32 functions as differential rotation speed deriving means.
- the actual rotational speed NI of the input shaft I is derived by the input shaft rotational speed deriving unit 33.
- the estimated rotational speed Nb before shifting is derived by the estimated rotational speed deriving unit 34.
- the differential rotational speed deriving unit 32 estimates the pre-shift estimated rotation derived by the estimated rotational speed deriving unit 34 from the actual rotational speed NI of the input shaft I derived by the input shaft rotational speed deriving unit 33.
- the speed Nb is subtracted, and the differential rotational speed ⁇ N is derived as the absolute value of the obtained result.
- the differential rotational speed ⁇ N derived from the differential rotational speed deriving unit 32 is output to the engagement side hydraulic control unit 28, the release side hydraulic control unit 29, and the phase determination unit 31.
- the input shaft rotational speed deriving unit 33 is a functional unit that derives the actual rotational speed NI of the input shaft I.
- the input shaft rotational speed deriving unit 33 functions as input shaft rotational speed deriving means.
- the input shaft rotational speed deriving unit 33 derives the rotational speed NI of the input shaft I by deriving the actual rotational speed of the rotor of the rotating electrical machine 12 based on the information on the rotational position of the rotor detected by the rotor rotational sensor Se2. To derive.
- the input shaft I is integrally connected to the rotor of the rotating electrical machine 12, the rotational speed of the rotor of the rotating electrical machine 12 matches the rotational speed NI of the input shaft I.
- a resolver is used as the rotor rotation sensor Se2 as described above, and the rotational position of the rotor of the rotating electrical machine 12 is detected with very high accuracy. Therefore, the input shaft rotational speed deriving unit 33 can derive the actual rotational speed NI of the input shaft I with very high accuracy. Thereby, the differential rotational speed deriving unit 32 can also derive the differential rotational speed ⁇ N with very high accuracy.
- the input shaft rotational speed deriving unit 33 is further configured to derive the actual rotational acceleration A of the input shaft I. Naturally, the input shaft rotational speed deriving unit 33 can derive the actual rotational acceleration A of the input shaft I with very high accuracy.
- the rotational speed NI of the input shaft I derived by the input shaft rotational speed deriving unit 33 is output to the phase determining unit 31, the differential rotational speed deriving unit 32, and the like. Further, the rotational acceleration A of the input shaft I is output to the engagement side hydraulic control unit 28.
- the estimated rotational speed deriving unit 34 is a functional unit that derives the estimated rotational speed of the input shaft I based on the rotational speed of the output shaft O and the speed ratio of the target gear set by the transmission 13.
- the estimated rotation speed deriving unit 34 functions as estimated rotation speed deriving means.
- the estimated rotational speed deriving unit 34 is the estimated rotational speed Nb before the shift that is the estimated rotational speed of the input shaft I before the change of the target shift stage and the estimated rotational speed of the input shaft I after the change of the target shift stage.
- the post-shift estimated rotational speed Na is derived.
- the pre-shift estimated rotational speed Nb is the rotational speed of the output shaft O detected by the output shaft rotational speed sensor Se3 and the speed ratio of the target shift stage of the transmission 13 before the shift (before the change of the target shift stage). And derived on the basis of Specifically, the estimated rotational speed Nb before the shift is derived as a multiplication value of the rotational speed of the output shaft O and the speed ratio of the target gear stage before the shift.
- the post-shift estimated rotational speed Na is derived based on the rotational speed of the output shaft O and the gear ratio of the target shift stage of the transmission 13 after the shift (after the change of the target shift stage).
- the post-shift estimated rotational speed Na is derived as a multiplication value of the rotational speed of the output shaft O and the speed ratio of the target gear stage after the shift.
- the pre-shift estimated rotational speed Nb and the post-shift estimated rotational speed Na derived by the estimated rotational speed deriving unit 34 are output to the differential rotational speed deriving unit 32 and the like.
- the target rotational acceleration deriving unit 35 functions as target rotational acceleration deriving means (target rotational speed change rate deriving means).
- the target rotational acceleration A0 of the input shaft I is derived based on the post-shift estimated rotational speed Na and the pre-shift estimated rotational speed Nb so that the inertia phase Pi can be completed in the target time TPi.
- the target rotational acceleration A0 is obtained by subtracting the pre-shift estimated rotational speed Nb from the post-shift estimated rotational speed Na, and the inertia phase Pi target time TPi (from time T4 to time T6 in FIGS. 2 and 3). It is derived as the division value divided by the time of In this case, the target rotational acceleration A0 of the input shaft I is a constant value.
- the target rotational acceleration A0 of the input shaft I derived by the target rotational acceleration deriving unit 35 is output to the input torque change amount deriving unit 36 and the engagement side hydraulic control unit 28.
- the input torque change amount deriving unit 36 is a functional unit that derives an input torque change amount ⁇ T that is a change amount of the torque of the input shaft I necessary for setting the actual rotational acceleration A of the input shaft I to the target rotational acceleration A0. is there.
- the input torque change amount deriving unit 36 functions as input torque change amount deriving means.
- the input torque to the input shaft I is increased or decreased by a predetermined input torque change amount ⁇ T over substantially the entire inertia phase Pi.
- the rotational acceleration A of the input shaft I is determined according to the input torque change amount ⁇ T, and conversely, the input torque change amount ⁇ T is determined according to the input shaft I. It depends on the rotational acceleration A. Therefore, the input torque change amount deriving unit 36 derives the input torque change amount ⁇ T based on the target rotational acceleration A0 of the input shaft I derived by the target rotational acceleration deriving unit 35.
- the rotational inertia of the input shaft I is known, and the target rotational acceleration A0 of the input shaft I derived by the target rotational acceleration deriving unit 35 is multiplied by the rotational inertia of the input shaft I, thereby changing the input torque.
- the quantity ⁇ T is derived. Since the rotational acceleration A of the input shaft I is a constant value, the input torque change amount ⁇ T is also a constant value.
- the input torque change amount ⁇ T derived by the input torque change amount deriving unit 36 is output to the rotating electrical machine control unit 22.
- the rotating electrical machine control unit 22 is a functional unit that controls the operation of the rotating electrical machine 12.
- the rotating electrical machine control unit 22 functions as rotating electrical machine control means.
- the rotating electrical machine control unit 22 performs a process of determining a rotating electrical machine operating point and controlling the rotating electrical machine 12 to operate at the rotating electrical machine operating point.
- the rotating electrical machine operating point is a control command value representing a control target point of the rotating electrical machine 12, and is determined by the rotational speed and torque. More specifically, the rotating electrical machine operating point is a control target point of the rotating electrical machine 12 determined in consideration of a vehicle required output, regenerative torque during regenerative braking, transmission torque fluctuation to the output shaft O during a shift operation, and the like.
- the vehicle drive device 1 is a hybrid drive device that is drivingly connected to the engine 11 and includes a rotating electrical machine 12 as a drive force source.
- a hybrid drive device there are many scenes in which the rotating electrical machine 12 performs power running or regeneration according to the traveling state of the vehicle 3. Therefore, in the following description, the transmission 13 is in a state where the rotating electrical machine 12 is outputting torque (drive torque that is torque in the same direction as the rotation direction or regenerative torque that is torque opposite to the rotation direction).
- torque that is torque in the same direction as the rotation direction or regenerative torque that is torque opposite to the rotation direction.
- the rotating electrical machine control unit 22 changes the torque of the rotating electrical machine 12 by a change amount corresponding to the change amount of the hydraulic pressure supplied to the engagement side element Ee in the torque phase Pt.
- the rotating electrical machine control unit 22 gradually increases the input torque at a constant change rate corresponding to this. Let In this case, the regenerative torque gradually decreases at a constant rate of change.
- a power-on upshift When the power-on upshift is performed, the rotating electrical machine control unit 22 changes the input torque with a change amount corresponding to the change amount of the hydraulic pressure supplied to the engagement side element Ee in the torque phase Pt. Increase.
- the rotating electrical machine control unit 22 since the hydraulic pressure supplied to the engagement side element Ee is gradually increased at a constant change rate, the rotating electrical machine control unit 22 gradually increases the input torque at a constant change rate corresponding to this. Let In this case, the driving torque gradually increases at a constant rate of change.
- the rotating electrical machine control unit 22 increases the torque of the rotating electrical machine 12 so as to increase or decrease the input torque input to the input shaft I in the inertia phase Pi in accordance with the shift speed switching direction. Control. At this time, the rotating electrical machine control unit 22 controls the torque of the rotating electrical machine 12 so as to increase or decrease by a predetermined input torque change amount ⁇ T with reference to the magnitude of the input torque at the end of the torque phase Pt. Here, the rotating electrical machine control unit 22 controls the torque of the rotating electrical machine 12 so as to increase the input torque input to the input shaft I during the downshift. For example, at the time of the regenerative downshift shown in FIG.
- the rotating electrical machine control unit 22 increases the input torque to increase the regeneration.
- the torque of the rotating electrical machine 12 is controlled so that the torque is decreased by a predetermined input torque change amount ⁇ T.
- the rotating electrical machine control unit 22 controls the torque of the rotating electrical machine 12 so as to decrease the input torque input to the input shaft I during the upshift. For example, at the time of the power-on upshift shown in FIG. 3, since positive torque (drive torque) is input from the rotating electrical machine 12 to the input shaft I, the rotating electrical machine control unit 22 reduces the input torque, The torque of the rotating electrical machine 12 is controlled so that the drive torque is decreased by a predetermined input torque change amount ⁇ T.
- the rotating electrical machine control unit 22 increases the input torque by a predetermined input torque change amount ⁇ T over substantially the entire inertia phase Pi excluding the final stage Pie of the shift process, and the input torque is a constant value.
- the torque of the rotating electrical machine 12 is controlled so as to be maintained.
- the final Pie of the speed change process is reached, in the state where the hydraulic pressure supplied to the engagement side element Ee is maintained at a constant value (the engagement side hydraulic pressure command value Ce is fixed at a constant value), the next rotation
- the electric machine control unit 22 rotates so that the actual rotation speed NI of the input shaft I derived by the input shaft rotation speed deriving unit 33 is synchronized with the post-shift estimated rotation speed Na derived by the estimated rotation speed deriving unit 34.
- the torque of the electric machine 12 is feedback controlled. In this way, the actual rotation speed NI of the input shaft I is smoothly brought close to the estimated rotation speed Na after the shift, and the shift shock is generated when the engagement side element Ee is brought into the fully engaged state at the end of the shift operation. Can be effectively suppressed.
- the vehicle control process according to the present embodiment includes a torque phase start determination process, a torque phase end determination process, and a shift operation control process.
- FIG. 4 is a flowchart showing a processing procedure of the torque phase start determination process
- FIG. 5 is a flowchart showing a processing procedure of the torque phase end determination process
- FIG. 6 is a flowchart showing a processing procedure of the shift operation control process.
- 2 is a time chart when a regenerative downshift is performed
- FIG. 3 is a time chart when a power-on upshift is performed.
- Each procedure of the vehicle control process described below is executed by each functional unit of the vehicle control unit 2.
- the arithmetic processing apparatus with which the vehicle control unit 2 is equipped operate moves as a computer which runs the program which comprises said each function part.
- the target gear position determination unit 26 acquires the vehicle speed and the accelerator opening (step # 01).
- the accelerator opening is detected and acquired by the accelerator opening detection sensor Se4, and the vehicle speed is a predetermined proportional coefficient (generally, the final reduction ratio) to the rotational speed of the output shaft O detected by the output shaft rotational speed sensor Se3. It is obtained by multiplying.
- the target shift speed determination unit 26 determines the target shift speed based on the acquired vehicle speed and accelerator opening (step # 02). The above process is repeatedly executed in sequence while the target gear position is not changed (step # 03: No).
- the release side hydraulic pressure control unit 29 When the target gear stage is changed (step # 03: Yes), the release side hydraulic pressure control unit 29 generates a predetermined differential rotational speed ⁇ N and substantially reduces the differential rotational speed ⁇ N at the time T1 of the pre-control phase Pp. Feedback control of the hydraulic pressure supplied to the release side element Er is started so as to be constant (step # 04). The feedback control of the hydraulic pressure supplied to the release side element Er by the release side hydraulic control unit 29 is continuously performed until time T4 when the torque phase Pt ends.
- Step # 06 the engagement side hydraulic control unit 28 increases the supply hydraulic pressure to the engagement side element Ee at a constant rate of change by increasing the engagement side hydraulic pressure command value Ce at a preset constant rate of change. .
- the sweeping up of the hydraulic pressure supplied to the engagement side element Ee by the engagement side hydraulic pressure control unit 28 is continued until time T4 when the torque phase Pt ends.
- the phase determination unit 31 monitors the differential rotational speed ⁇ N derived by the differential rotational speed deriving unit 32 and further monitors the release side hydraulic pressure command value Cr by the release side hydraulic control unit 29. In this state, the phase determination unit 31 determines whether or not the differential rotation speed ⁇ N has decreased by a predetermined start determination differential rotation speed ⁇ N0 or more from a substantially constant state (step # 07).
- step # 07 While it is not detected that the differential rotation speed ⁇ N has temporarily decreased from a substantially constant state (step # 07: No), the phase determination unit 31 determines that the release side hydraulic pressure command value Cr is equal to the differential rotation speed ⁇ N. It is determined whether or not it has decreased by a predetermined start determination change amount ⁇ Cr0 or more with reference to a value in a substantially constant state (step # 08). When it is determined that the decrease amount of the release side hydraulic pressure command value Cr is less than the start determination change amount ⁇ Cr0 (step # 08: No), the process returns to step # 07 again to perform the processes of steps # 07 and # 08. Run repeatedly.
- Step # 07: Yes the phase determination unit 31 determines that the torque phase Pt has started at that time (in this example, time T3) (step # 09), and ends the torque phase start determination process. To do.
- the start determination change amount ⁇ Cr0 is greatly displayed in consideration of visibility.
- the determination change amount ⁇ Cr0 is a sufficiently small value as compared with the release side hydraulic pressure command value Cr in a state where the differential rotation speed ⁇ N is substantially constant.
- phase determination unit 31 After the determination of the start of the torque phase Pt, feedback control of the supply hydraulic pressure to the release side element Er by the release side hydraulic control unit 29 and sweep up of the supply hydraulic pressure to the engagement side element Ee by the engagement side hydraulic control unit 28 are performed. In a state in which they are performed in parallel, the phase determination unit 31 performs the engagement-side hydraulic command value Ce by the engagement-side hydraulic control unit 28, the release-side hydraulic command value Cr by the release-side hydraulic control unit 29, and the differential rotation speed. The differential rotational speed ⁇ N derived by the deriving unit 32 is monitored.
- the phase determination unit 31 first determines whether or not the release side hydraulic pressure command value Cr is equal to or less than a predetermined release determination value Cr1 (step # 21).
- the predetermined release determination value Cr1 is set to a value corresponding to the stroke end pressure in the release side element Er.
- the phase determination unit 31 determines whether or not the differential rotational speed ⁇ N has decreased to zero. Is determined (step # 22). If it is determined that the differential rotational speed ⁇ N has not yet become zero (step # 22: No), the phase determination unit 31 then performs a predetermined end determination in which the engagement side hydraulic pressure command value Ce is set in advance.
- the predetermined end determination value Ce1 is a learned value of the engagement side hydraulic pressure command value Ce at the time when the release side hydraulic pressure command value Cr becomes the stroke end pressure equivalent value Cr1. If it is determined that the engagement side hydraulic pressure command value Ce is less than the end determination value Ce1 (step # 23: No), the process returns to step # 21 again and the processes of steps # 21 to # 23 are repeatedly executed. .
- the phase determination unit 31 determines the time (in this example, time T4). ) Determines that the torque phase Pt has ended (step # 24), and ends the torque phase end determination process. 2 and 3 exemplify a case where all three determination conditions are satisfied at time T4.
- step # 31: Yes the rotating electrical machine control unit 22 performs the torque phase from time T3 to time T4.
- the torque of the rotating electrical machine 12 is changed by a change amount corresponding to the change amount of the hydraulic pressure supplied to the engagement side element Ee over the entire Pt (step # 32).
- the hydraulic pressure supplied to the engagement side element Ee is increased at a constant rate of change, so that the rotating electrical machine control unit 22 changes the torque of the rotating electrical machine 12 at a constant rate of change accordingly.
- the rotating electrical machine control unit 22 decreases the regenerative torque of the rotating electrical machine 12 at a constant rate of change.
- the rotating electrical machine control unit 22 increases the drive torque of the rotating electrical machine 12 at a constant rate of change.
- step # 41: Yes when the phase determination unit 31 determines the end of the torque phase Pt in step # 24 (step # 41: Yes), the target rotational acceleration deriving unit 35 completes the inertia phase Pi at the target time TPi. Then, the target rotational acceleration A0 of the input shaft I is derived in accordance with the change of the gear position (step # 42-1).
- the input torque change amount deriving unit 36 derives the input torque change amount ⁇ T based on the target rotational acceleration A0 of the input shaft I (step # 42-2).
- the rotating electrical machine control unit 22 increases or decreases the input torque input to the input shaft I at time T4 by a predetermined input torque change amount ⁇ T according to the shift speed switching direction (downshift or upshift) (step #). 43).
- the inertia phase Pi is started.
- the rotating electrical machine control unit 22 increases the input torque and decreases the regenerative torque by a predetermined input torque change amount ⁇ T.
- the rotating electrical machine control unit 22 decreases the input torque and decreases the drive torque by a predetermined input torque change amount ⁇ T.
- the engagement-side hydraulic control unit 28 determines that the actual rotational acceleration A of the input shaft I is the input shaft I.
- the hydraulic pressure supplied to the engagement side element Ee is controlled so as to achieve the target rotational acceleration A0 (step # 45).
- the control of the hydraulic pressure supplied to the engagement side element Ee by the engagement side hydraulic pressure control unit 28 is continuously performed until the final phase Pie of the shift process in which the actual rotational speed NI of the input shaft I approaches the post-shift estimated rotational speed Na. It is.
- the engagement side hydraulic pressure control unit 28 fixes the engagement side hydraulic pressure command value Ce to a constant value and supplies it to the engagement side element Ee.
- the oil pressure is maintained at a constant value (step # 47).
- the rotating electrical machine control unit 22 feedback-controls the torque of the rotating electrical machine 12 so that the actual rotational speed NI of the input shaft I is synchronized with the post-shift estimated rotational speed Na (step # 48).
- the engagement-side hydraulic control unit 28 fully engages the engagement-side hydraulic command value Ce.
- the engagement side element is brought into a completely engaged state by raising the pressure to the combined pressure all at once (step # 50). This completes the shift operation control process.
- the target rotational acceleration deriving unit 35 derives the target rotational acceleration A0 of the input shaft I having a constant value
- the rotating electrical machine control unit 22 extends over substantially the entire inertia phase Pi.
- the torque of the rotating electrical machine 12 is controlled so that the input torque is increased or decreased by the input torque change amount ⁇ T that is derived based on the target rotational acceleration A0 of the input shaft I and becomes a constant value in accordance with the shift speed switching direction.
- the embodiment of the present invention is not limited to this.
- the target rotational acceleration deriving unit 35 derives the target rotational acceleration A0 of the input shaft I that increases or decreases at a constant rate of time change, and the rotating electrical machine control unit 22 changes the speed over substantially the entire inertia phase Pi. It is also a preferred embodiment of the present invention that the torque of the rotating electrical machine 12 is controlled so that the input torque increases or decreases at a constant time change rate according to the stage switching direction.
- the target rotational acceleration A0 of the input shaft I derived by the target rotational acceleration deriving unit 35 can be gradually reduced from the start point of the inertia phase Pi to the end point.
- the rotating electrical machine control unit 22 The input torque change amount ⁇ T derived based on the target rotational acceleration A0 is gradually decreased from the start point of the inertia phase Pi to the end point.
- the rotating electrical machine controller 22 causes the torque of the rotating electrical machine 12 to synchronize the actual rotational speed NI of the input shaft I with the post-shift estimated rotational speed Na at the final stage Pie of the shift process.
- the case where feedback control is performed has been described as an example.
- the embodiment of the present invention is not limited to this. That is, the rotary electric machine control unit 22 may increase the rotational speed NI of the input shaft I according to the target rotational acceleration A0 while maintaining the input torque at a constant value without performing such feedback control. It is one of the preferred embodiments of the present invention.
- the engagement side hydraulic pressure control unit 28 increases the engagement side hydraulic pressure command value Ce to the full engagement pressure at a stroke. It can be set as the structure which makes the side element Ee a complete engagement state.
- the phase determination unit 31 sets any two of the above phenomena (A) to (C) as detection targets, and the torque phase Pt ends on condition that one or both of the two phenomena as detection targets are detected. It is also one of the preferred embodiments of the present invention to have a configuration in which it is determined that the above has been performed. Alternatively, the phase determination unit 31 determines only one of the above phenomena (A) to (C) as a detection target, and determines that the torque phase Pt is completed on condition that the detection target phenomenon is detected. This is also a preferred embodiment of the present invention.
- the phase determination unit 31 does not assume the above-described control by the disengagement side hydraulic control unit 29 and the engagement side hydraulic control unit 28, the time point at which the differential rotational speed ⁇ N starts to rise from the zero state is defined as the end point of the torque phase Pt.
- the determination configuration is also one preferred embodiment of the present invention.
- the vehicle control unit 2 has the input shaft rotational speed deriving unit 33 for deriving the actual rotational speed NI of the input shaft I, and the estimated rotational speed for deriving the estimated rotational speed of the input shaft I.
- the release side hydraulic pressure control unit 29 and the phase determination unit 31 perform various controls and various determinations based on the actual rotational speed NI of the input shaft I, the estimated rotational speed of the input shaft I, and the differential rotational speed ⁇ N. The case where it is configured has been described as an example.
- An input / output rotational speed ratio deriving unit as an output rotational speed ratio deriving unit is provided, and instead of the differential rotational speed deriving unit 32, an actual input / output rotational speed ratio and a speed ratio before the change of the target gear stage are changed.
- a differential rotational speed ratio deriving unit is provided as differential rotational speed ratio deriving means for deriving the differential rotational speed ratio.
- the engagement side hydraulic control unit 28, the release side hydraulic control unit 29, and the phase determination unit 31 are based on the actual rotational speed NI of the input shaft I, the actual input / output rotational speed ratio, and the differential rotational speed ratio. Even if it is configured to perform various controls and various determinations, it is substantially the same. Therefore, even if such a modification is made, such a configuration is equivalent to the configuration of the present invention and is included in the technical scope of the present invention.
- the torque phase start determination process, the torque phase end determination process, and the shift operation control process according to the present embodiment are performed when a regenerative downshift or a power-on upshift is performed.
- the case where it is executed has been described as an example.
- the embodiment of the present invention is not limited to this. That is, when the gear stage is switched at least through the torque phase Pt by controlling the engagement and release of the plurality of engagement elements C1, B1,.
- the present invention can also be applied when a shift, a power-on downshift, or the like is performed.
- the rotor of the rotating electrical machine 12 that rotates integrally with the input shaft I is directly connected to the transmission 13.
- the case has been described as an example.
- the specific configuration of the vehicle drive device 1 is arbitrary as long as it includes the stepped transmission 13 having at least a plurality of gears with different gear ratios.
- the vehicle drive device 1 to be controlled by the vehicle control unit 2 may be configured to include a fluid transmission device such as a torque converter, a clutch, or the like between the rotating electrical machine 12 and the transmission 13. This is one of the preferred embodiments.
- the vehicle drive device 1 that is controlled by the vehicle control unit 2 is a drive device for a hybrid vehicle that includes both the engine 11 and the rotating electrical machine 12 as drive power sources.
- the case has been described as an example.
- the embodiment of the present invention is not limited to this. That is, the vehicle control device according to the present invention is particularly suitable for controlling a vehicle drive device including at least the rotating electrical machine 12 as a drive force source, and is a vehicle drive device to be controlled by the vehicle control unit 2. It is also a preferred embodiment of the present invention that 1 is a drive device for an electric vehicle that includes only the rotating electrical machine 12 as a drive force source.
- the present invention relates to an input member that is drivingly connected to a rotating electrical machine as a driving force source, an output member that is drivingly connected to a wheel, and the rotational speed of the input member is changed at a gear ratio of each gear and transmitted to the output member.
- a vehicle drive device having a transmission device that controls the vehicle drive device.
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Abstract
Description
また、「駆動連結」とは、2つの回転要素が駆動力を伝達可能に連結された状態を指し、当該2つの回転要素が一体的に回転するように連結された状態、或いは当該2つの回転要素が一又は二以上の伝動部材を介して駆動力を伝達可能に連結された状態を含む概念として用いている。このような伝動部材としては、回転を同速で又は変速して伝達する各種の部材が含まれ、例えば、軸、歯車機構、ベルト、チェーン等が含まれる。
エンジン11は、燃料の燃焼により駆動される内燃機関であり、例えば、ガソリンエンジンやディーゼルエンジンなどの公知の各種エンジンを用いることができる。エンジン11は、入力クラッチ14を介して入力軸Iに駆動連結されている。本例では、エンジン11のクランクシャフト等のエンジン出力軸Eoが、入力クラッチ14を介して入力軸Iに駆動連結されている。入力軸Iは、回転電機12のロータ(不図示)と一体回転するように駆動連結されている。
次に、本実施形態に係る車両制御ユニット2の構成について説明する。車両用駆動装置1の制御を行なうための車両制御ユニット2は、図1に示すように、車両用駆動装置1の各部の動作制御を行う中核部材としての機能を果たしている。この車両制御ユニット2は、CPU等の演算処理装置を中核部材として備えると共に、当該演算処理装置からデータを読み出し及び書き込みが可能に構成されたRAM(ランダム・アクセス・メモリ)や、演算処理装置からデータを読み出し可能に構成されたROM(リード・オンリ・メモリ)等の記憶装置等を有して構成されている(不図示)。そして、ROM等に記憶されたソフトウェア(プログラム)又は別途設けられた演算回路等のハードウェア、或いはそれらの両方により、車両制御ユニット2の各機能部21~36が構成される。これらの各機能部21~36は、互いに情報の受け渡しを行うことができるように構成されている。また、この車両用駆動装置1は、各機能部21~36による各機能を適切に実現可能とするため、車両3の各部に設けられた複数のセンサSe1~Se4を備えている。以下では、車両制御ユニット2の各機能部21~36について、詳細に説明する。
(1)差回転速度ΔNが略一定の状態から所定の開始判定差回転速度ΔN0以上低下したこと、
(2)解放側油圧指令値Crが、差回転速度ΔNが略一定の状態における値を基準として所定の開始判定変化量ΔCr0以上低下したこと、
の2つの現象を検出対象としている。そして、フェーズ判定部31は、差回転速度ΔNが略一定の状態から所定の開始判定差回転速度ΔN0以上低下したことの検出、及び、解放側油圧指令値Crが、差回転速度ΔNが略一定の状態における値を基準として所定の開始判定変化量ΔCr0以上低下したことの検出、のいずれか一方を条件としてトルク相Ptが開始されたと判定する。
次に、本実施形態に係る車両制御処理の内容について、図4~図6のフローチャート及び図2及び図3のタイムチャートを参照して説明する。本実施形態に係る車両制御処理は、トルク相開始判定処理、トルク相終了判定処理、及び変速動作制御処理の各処理を含んで構成される。図4はトルク相開始判定処理の処理手順を示すフローチャートであり、図5はトルク相終了判定処理の処理手順を示すフローチャートであり、図6は変速動作制御処理の処理手順を示すフローチャートである。また、図2は回生ダウンシフトが行われる場合におけるタイムチャートであり、図3はパワーオンアップシフトが行われる場合におけるタイムチャートである。以下に説明する車両制御処理の各手順は、車両制御ユニット2の各機能部により実行される。各機能部がプログラムにより構成される場合には、車両制御ユニット2が備える演算処理装置は、上記の各機能部を構成するプログラムを実行するコンピュータとして動作する。
本実施形態に係るトルク相開始判定処理においては、まず目標変速段決定部26は、車速及びアクセル開度を取得する(ステップ#01)。ここで、アクセル開度はアクセル開度検出センサSe4により検出されて取得され、車速は出力軸回転速度センサSe3により検出される出力軸Oの回転速度に所定の比例係数(一般に、最終減速比)を乗算して取得される。目標変速段決定部26は、取得した車速及びアクセル開度に基づいて目標変速段を決定する(ステップ#02)。以上の処理は、目標変速段が変更されていない間は(ステップ#03:No)逐次繰り返して実行される。目標変速段に変更があると(ステップ#03:Yes)、解放側油圧制御部29は、プレ制御相Ppの時刻T1において、所定の差回転速度ΔNを生じさせると共に当該差回転速度ΔNが略一定となるように、解放側要素Erへの供給油圧のフィードバック制御を開始する(ステップ#04)。なお、解放側油圧制御部29による解放側要素Erへの供給油圧のフィードバック制御は、トルク相Ptが終了する時刻T4まで継続して行なわれる。
本実施形態に係るトルク相終了判定処理においては、トルク相開始判定処理のステップ#04で開始された解放側油圧制御部29による解放側要素Erへの供給油圧のフィードバック制御と、ステップ#06で開始された係合側油圧制御部28による係合側要素Eeへの供給油圧のスイープアップとが、未だ継続して実行されている。図5のフローチャートにおいては、このことを確認的に示すため、トルク相開始判定処理におけるステップ#04及びステップ#06の処理ブロックを破線で示している。トルク相Ptの開始の判定後、解放側油圧制御部29による解放側要素Erへの供給油圧のフィードバック制御と係合側油圧制御部28による係合側要素Eeへの供給油圧のスイープアップとが並行して行われている状態では、フェーズ判定部31は、係合側油圧制御部28による係合側油圧指令値Ce、解放側油圧制御部29による解放側油圧指令値Cr、及び差回転速度導出部32により導出される差回転速度ΔN、を監視している。
本実施形態に係る変速動作制御処理においては、これまで説明したトルク相開始判定処理及びトルク相終了判定処理の結果が利用される。変速動作制御処理では、まずステップ#09においてフェーズ判定部31によりトルク相Ptの開始が判定されると(ステップ#31:Yes)、回転電機制御部22は、時刻T3から時刻T4までのトルク相Ptの全体に亘って、係合側要素Eeへの供給油圧の変化量に対応した変化量で回転電機12のトルクを変化させる(ステップ#32)。本実施形態では、係合側要素Eeへの供給油圧は一定の変化率で上昇されるので、回転電機制御部22は、これに対応して一定の変化率で回転電機12のトルクを変化させる。具体的には、図2に示す回生ダウンシフト時には、回転電機制御部22は、一定の変化率で回転電機12の回生トルクを減少させる。一方、図3に示すパワーオンアップシフト時には、回転電機制御部22は、一定の変化率で回転電機12の駆動トルクを増加させる。
(1)上記の実施形態においては、目標回転加速度導出部35が、一定値となる入力軸Iの目標回転加速度A0を導出し、回転電機制御部22が、イナーシャ相Piの略全体に亘って変速段の切り替え方向に応じて入力トルクを、入力軸Iの目標回転加速度A0に基づいて導出され一定値となる入力トルク変化量ΔTだけ増加又は減少させるように回転電機12のトルクを制御する場合を例として説明した。しかし、本発明の実施形態はこれに限定されない。すなわち、例えば目標回転加速度導出部35が、一定の時間変化率で増加又は減少する入力軸Iの目標回転加速度A0を導出し、回転電機制御部22が、イナーシャ相Piの略全体に亘って変速段の切り替え方向に応じて入力トルクが一定の時間変化率で増加又は減少するように回転電機12のトルクを制御する構成とすることも、本発明の好適な実施形態の一つである。例えば目標回転加速度導出部35により導出される入力軸Iの目標回転加速度A0を、イナーシャ相Piの開始時点から終了時点に向かって漸減させる構成とすることができ、この場合、回転電機制御部22は、目標回転加速度A0に基づいて導出される入力トルク変化量ΔTを、イナーシャ相Piの開始時点から終了時点に向かって漸減させることになる。
2 車両制御ユニット(車両用制御装置)
11 エンジン(駆動力源)
12 回転電機(駆動力源)
13 変速装置
17 車輪
22 回転電機制御部(回転電機制御手段)
28 係合側油圧制御部(係合制御手段)
29 解放側油圧制御部(解放制御手段)
I 入力軸(入力部材)
O 出力軸(出力部材)
B1 第一ブレーキ(係合要素)
C1 第一クラッチ(係合要素)
Ee 係合側要素
Er 解放側要素
Pt トルク相
ΔN 差回転速度
Nb 変速前推定回転速度
Na 変速後推定回転速度
ΔT 入力トルク変化量
A0 目標回転加速度(目標回転速度変化率)
Ce 係合側油圧指令値
Cr 解放側油圧指令値
Cr1 解放判定値
Claims (5)
- 駆動力源としての回転電機に駆動連結される入力部材と、車輪に駆動連結される出力部材と、複数の係合要素を備えると共に複数の変速段を切替可能に備え、前記入力部材の回転速度を各変速段の変速比で変速して前記出力部材に伝達する変速装置と、を備えた車両用駆動装置を制御対象とし、前記複数の係合要素の係合及び解放を制御することにより、前記変速装置において少なくともトルク相を経て行われる変速段の切り替えを制御する車両用制御装置であって、
変速動作中におけるトルク相の終了を判定する相判定手段と、
前記相判定手段によりトルク相が終了したと判定された後、前記入力部材の回転速度変化率が目標回転速度変化率となるように導出された入力トルクの変化量を用いて、当該入力トルクの変化量だけ、前記入力部材へ入力される入力トルクを変速段の切り替え方向に応じて増加又は減少させるように前記回転電機のトルクを制御する回転電機制御手段と、
前記入力部材の回転速度変化率が前記目標回転速度変化率となるように、変速段の切替後に係合される側の係合要素となる係合側要素への供給油圧をフィードバック制御する係合制御手段と、
を備えた車両用制御装置。 - 前記回転電機制御手段は、前記入力トルクを増加又は減少させた状態で一定の値に維持する請求項1に記載の車両用制御装置。
- 前記目標回転速度変化率は、変速動作中におけるイナーシャ相が目標の時間で終了できるように変速段の切替前後の変速比に基づいて決定される請求項1又は2に記載の車両用制御装置。
- 前記入力部材の実際の回転速度が、前記出力部材の回転速度と変速後における前記変速装置の変速比とに基づいて導出される前記入力部材の変速後推定回転速度に近づいた後、
前記係合制御手段は、前記係合側要素への供給油圧を一定の値に維持した状態で、
前記回転電機制御手段は、前記入力部材の実際の回転速度を前記変速後推定回転速度に同期させるように前記回転電機のトルクをフィードバック制御する請求項1から3のいずれか一項に記載の車両用制御装置。 - 前記入力部材の実際の回転速度と、変速前における前記出力部材の回転速度と前記変速装置の変速比とに基づいて導出される前記入力部材の変速前推定回転速度との間の回転速度の差である差回転速度が略一定となるように、解放される側の係合要素となる解放側要素への供給油圧をフィードバック制御する解放制御手段と、
前記差回転速度が略一定の状態で、前記係合側要素への供給油圧を上昇させる係合制御手段と、を更に備え、
前記相判定手段は、前記解放側要素への供給油圧の指令値である解放側油圧指令値が、前記解放側要素における伝達トルク容量がゼロとなる油圧に相当する所定の解放判定値となったことの検出、及び、前記差回転速度が低下してゼロとなったことの検出、の一方又は双方を条件として、トルク相が終了したと判定する請求項1から4のいずれか一項に記載の車両用制御装置。
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Families Citing this family (17)
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US8214116B2 (en) * | 2007-07-11 | 2012-07-03 | GM Global Technology Operations LLC | Apparatus and method for decreasing an upshift delay in an automatic transmission |
JP5207080B2 (ja) * | 2009-10-30 | 2013-06-12 | アイシン・エィ・ダブリュ株式会社 | 車両用制御装置 |
JP5516081B2 (ja) * | 2010-05-31 | 2014-06-11 | 日産自動車株式会社 | 車両用電動モータのトルク応答制御装置 |
JP5185993B2 (ja) * | 2010-12-01 | 2013-04-17 | 三菱電機株式会社 | 車両用発電制御装置 |
JP2013001185A (ja) * | 2011-06-14 | 2013-01-07 | Denso Corp | 回転機の減磁検出装置 |
JP5982766B2 (ja) * | 2011-09-26 | 2016-08-31 | 日産自動車株式会社 | 自動変速機の変速制御装置 |
JP5915245B2 (ja) * | 2012-02-22 | 2016-05-11 | 日産自動車株式会社 | ハイブリッド車両の制御装置 |
DE102012015291A1 (de) * | 2012-08-01 | 2014-02-06 | GM Global Technology Operations LLC (n. d. Gesetzen des Staates Delaware) | Kraftfahrzeug mit einer aktuatorbetätigten Kupplung |
JP6196857B2 (ja) * | 2013-09-13 | 2017-09-13 | ジヤトコ株式会社 | 車両の制御装置 |
US9523428B2 (en) | 2014-02-12 | 2016-12-20 | Toyota Motor Engineering & Manufacturing North America, Inc. | System and method for shift restraint control |
KR101679483B1 (ko) * | 2014-12-11 | 2016-11-24 | 현대다이모스(주) | 변속기용 브레이크 제어 방법 및 제어 장치 |
WO2016104800A1 (ja) * | 2014-12-25 | 2016-06-30 | アイシン・エィ・ダブリュ株式会社 | 車両用駆動伝達装置の制御装置 |
JPWO2017057757A1 (ja) * | 2015-09-30 | 2018-05-24 | アイシン・エィ・ダブリュ株式会社 | 制御装置 |
JP6617681B2 (ja) * | 2016-10-27 | 2019-12-11 | トヨタ自動車株式会社 | 変速制御装置 |
JP7024873B2 (ja) * | 2018-07-25 | 2022-02-24 | 株式会社アイシン | 制御装置 |
CN114763838B (zh) * | 2021-01-11 | 2023-08-15 | 广州汽车集团股份有限公司 | 汽车换挡控制方法 |
CN114909469B (zh) * | 2021-02-07 | 2024-04-16 | 广汽埃安新能源汽车有限公司 | 一种车辆升挡控制方法、装置及存储介质 |
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JPH09331603A (ja) * | 1996-06-11 | 1997-12-22 | Aisin Aw Co Ltd | 車両用駆動装置の制御装置 |
JPH10257610A (ja) * | 1997-03-07 | 1998-09-25 | Aisin Aw Co Ltd | 車両用駆動装置の制御装置 |
JP2004203220A (ja) * | 2002-12-25 | 2004-07-22 | Toyota Motor Corp | ハイブリッド駆動装置の制御装置 |
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JPS5761929A (en) * | 1980-10-01 | 1982-04-14 | Toyota Motor Corp | Measuring method for fluctuation of mean effective pressure of engine shown in diagram |
JP3882417B2 (ja) * | 1999-09-09 | 2007-02-14 | 日産自動車株式会社 | 車両の駆動力制御装置 |
JP4234289B2 (ja) * | 1999-12-27 | 2009-03-04 | 日産自動車株式会社 | エンジンの制御装置 |
ES2380537T3 (es) * | 2002-12-25 | 2012-05-16 | Toyota Jidosha Kabushiki Kaisha | Dispositivo de control de la unidad de conducción hibrida. |
JP2006214454A (ja) * | 2005-02-01 | 2006-08-17 | Hitachi Ltd | 自動車の変速機制御装置及び自動変速装置 |
JP4259527B2 (ja) * | 2006-01-10 | 2009-04-30 | トヨタ自動車株式会社 | 車両の制御装置 |
JP5104061B2 (ja) | 2007-06-26 | 2012-12-19 | 日産自動車株式会社 | 車両の変速制御装置 |
JP5207080B2 (ja) * | 2009-10-30 | 2013-06-12 | アイシン・エィ・ダブリュ株式会社 | 車両用制御装置 |
-
2009
- 2009-10-30 JP JP2009251501A patent/JP5062494B2/ja not_active Expired - Fee Related
-
2010
- 2010-09-10 US US12/879,461 patent/US8423213B2/en not_active Expired - Fee Related
- 2010-09-15 DE DE112010002304T patent/DE112010002304T5/de not_active Ceased
- 2010-09-15 WO PCT/JP2010/065978 patent/WO2011052306A1/ja active Application Filing
- 2010-09-15 CN CN201080029393.9A patent/CN102470860B/zh not_active Expired - Fee Related
Patent Citations (3)
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JPH09331603A (ja) * | 1996-06-11 | 1997-12-22 | Aisin Aw Co Ltd | 車両用駆動装置の制御装置 |
JPH10257610A (ja) * | 1997-03-07 | 1998-09-25 | Aisin Aw Co Ltd | 車両用駆動装置の制御装置 |
JP2004203220A (ja) * | 2002-12-25 | 2004-07-22 | Toyota Motor Corp | ハイブリッド駆動装置の制御装置 |
Also Published As
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JP2011093480A (ja) | 2011-05-12 |
US20110106356A1 (en) | 2011-05-05 |
JP5062494B2 (ja) | 2012-10-31 |
DE112010002304T5 (de) | 2012-06-21 |
US8423213B2 (en) | 2013-04-16 |
CN102470860A (zh) | 2012-05-23 |
CN102470860B (zh) | 2014-09-10 |
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