CN102085860A - Automobile hydraulic power-assisted steering switching signal processing method - Google Patents
Automobile hydraulic power-assisted steering switching signal processing method Download PDFInfo
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- CN102085860A CN102085860A CN2011100072241A CN201110007224A CN102085860A CN 102085860 A CN102085860 A CN 102085860A CN 2011100072241 A CN2011100072241 A CN 2011100072241A CN 201110007224 A CN201110007224 A CN 201110007224A CN 102085860 A CN102085860 A CN 102085860A
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- Prior art keywords
- time
- signal
- steering
- effective time
- servo
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
- B62D5/065—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle characterised by specially adapted means for varying pressurised fluid supply based on need, e.g. on-demand, variable assist
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/04—Introducing corrections for particular operating conditions
- F02D41/08—Introducing corrections for particular operating conditions for idling
- F02D41/083—Introducing corrections for particular operating conditions for idling taking into account engine load variation, e.g. air-conditionning
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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
- B60W10/20—Conjoint control of vehicle sub-units of different type or different function including control of steering systems
-
- 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
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
- B60W2050/0062—Adapting control system settings
- B60W2050/0075—Automatic parameter input, automatic initialising or calibrating means
- B60W2050/0083—Setting, resetting, calibration
- B60W2050/0087—Resetting start and end points of actuator travel
-
- 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
- B60W2710/06—Combustion engines, Gas turbines
- B60W2710/0644—Engine speed
- B60W2710/065—Idle condition
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
- Steering Control In Accordance With Driving Conditions (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
The invention discloses an automobile hydraulic power-assisted steering switching signal processing method. The method comprises the steps of setting a nominal time Tmin and setting the effective time Tout of a logic processing signal according to the relation between the effective time of the power-assisted steering switching signal and the nominal time Tmin. By applying the method in the invention, the power of the engine can be avoided from being increased or reduced frequently, thus an engine electronic spray pipe management system can easily control the idling speed of the engine and the driving performance is improved.
Description
Technical field
The present invention relates to a kind of signal processing method, particularly relate to a kind of processing method of automobile hydraulic electric power steering on-off signal.
Background technology
In order to improve the driving performance of vehicle, in vehicle, generally all dispose the mechanical type hydraulic servo steering system.In order to remedy of the consumption of power of this steering swivel system to driving engine, it is flame-out to prevent that vehicle from turning under the idling situation, in system, also dispose the hydraulic power-assisted steering switch usually, this on-off signal is input to vehicle EFI system control unit ECU(Electronic Control Unit, electronic control unit), when hydraulic pressure surpasses the switch threshold values of servo-steering switch, switch connection, engine power when electric injection system control unit ECU increases idling is with keep the engine alive; When hydraulic pressure was lower than the switch threshold values of servo-steering switch, switch disconnected, and the original engine power that increases of electric injection system control unit ECU cancellation is too high to prevent the engine idle rotating speed.
When the oil pressure in the mechanical type hydraulic servo steering system when cut-offfing of servo-steering switch fluctuateed near the threshold values back and forth, the frequent connection of servo-steering switch disconnects, the increase that corresponding vehicle EFI system control unit ECU is also frequent and reduce engine power.If this situation appears in vehicle under the neutral idle situation, the phenomenon that engine speed can occur fluctuating back and forth, thus influence the vehicular drive performance.As shown in Figure 1: the servo-steering on-off signal is effectively low, and engine power constantly changes with the variation of servo-steering on-off signal.As seen from the figure, in the servo-steering switch A1 effective time time period, engine electric spray management system ECU begins to increase engine power, but owing to the servo-steering switch disconnects rapidly, (A point among the figure) just do not begin to reduce engine power when the power of driving engine also is increased to calibration value; When also not reaching zero, (B point among the figure), because the servo-steering switch is switched on (the A2 low level is constantly among the figure) again, ECU begins to increase the power of driving engine again.In this case, the power of driving engine is by frequent increase and reduce, and makes the engine electric spray management system very difficulty that becomes when the idling speed of control driving engine.
Summary of the invention
The purpose of this invention is to provide a kind of automobile hydraulic electric power steering on-off signal processing method, this method can avoid engine power by frequent increase with reduce, thereby can make the engine electric spray management system become easy when the idling speed of control driving engine.
For realizing purpose of the present invention, the invention provides a kind of automobile hydraulic electric power steering on-off signal processing method, comprise the steps:
(1) sets nominal time Tmin;
(2) judge that whether servo-steering on-off signal T0 effective time is less than nominal time Tmin;
(3) as servo-steering on-off signal T0 effective time during less than nominal time Tmin, logical process signal Tout effective time is taken as nominal time Tmin; When logical process signal Tout effective time lasts till nominal time Tmin, judged whether that power-assisted pole changer signal Tn effective time exists, described n is a positive integer, when not having a servo-steering on-off signal effective time, Tn existed, finishes; As the servo-steering on-off signal when effective time, Tn existed, judge that whether servo-steering on-off signal Tn effective time is less than nominal time Tmin, as servo-steering on-off signal Tn effective time during less than nominal time Tmin, then logical process signal Tout effective time is taken as 2 * Tmin; As servo-steering on-off signal Tn effective time during greater than nominal time Tmin, then logical process signal Tout effective time is taken as Tmin+Tn; Described logical process signal Tout effective time is the low level time of logical process signal, is the time length that electric injection system control unit ECU regulates engine power;
(4) as servo-steering on-off signal T0 effective time during greater than nominal time Tmin, logical process signal Tout effective time is taken as servo-steering on-off signal T0 effective time;
(5) finish.
This method can avoid engine power by frequent increase or reduce, thereby makes the engine electric spray management system can control the idling speed of driving engine more easily, thereby improves the vehicular drive performance.
In a preferred embodiment of the invention, this signal processing method also is set with demarcates Tdelay delay time, when the time gap Tsp between adjacent two sections logical process signal Tout effective time greater than demarcating delay time during Tdelay, the actual delay time T int between adjacent two sections logical process signal Tout effective time is taken as time gap Tsp; When the time gap Tsp between adjacent two sections logical process signal Tout effective time less than demarcating delay time during Tdelay, actual delay time T int is taken as and demarcates Tdelay delay time.
In above-mentioned preferred implementation according to the present invention, servo-steering on-off signal T0 effective time ..., Tn is an interlude between adjacent falling edge of servo-steering on-off signal and the positive rise.
In above-mentioned preferred implementation according to the present invention, the initial moment of logical process signal Tout effective time is identical with the initial moment of servo-steering on-off signal T0 effective time.
In a preferred embodiment of the invention, nominal time Tmin is 100ms.
In another kind of preferred implementation according to the present invention, demarcation Tdelay delay time is 50ms.
The beneficial effect that the present invention has:
Automobile hydraulic electric power steering on-off signal processing method of the present invention is set Tout effective time of logical process signal according to the length of servo-steering on-off signal T0 effective time, can avoid engine power by frequent increase or reduce, thereby make the engine electric spray management system can control the idling speed of driving engine more easily.
Description of drawings
Fig. 1 is the scheme drawing that servo-steering on-off signal and engine power change under the conventional approach;
Fig. 2 is the diagram of circuit of automobile hydraulic electric power steering on-off signal processing method of the present invention;
Fig. 3 is the sequential chart of power-assisted change-over swith signal and logical process signal.
The specific embodiment
For make purpose of the present invention, technical scheme, and advantage clearer, below the present invention is described in more detail with reference to accompanying drawing.
Fig. 2 shows the diagram of circuit of automobile hydraulic electric power steering on-off signal processing method.As seen from the figure, number processing method comprises the steps:
(1) set nominal time Tmin, in the present embodiment, Tmin is taken as 100ms;
(2) judge that whether servo-steering on-off signal T0 effective time is less than nominal time Tmin;
(3) as servo-steering on-off signal T0 effective time during less than nominal time Tmin, logical process signal Tout effective time is taken as nominal time Tmin; When logical process signal Tout effective time lasts till nominal time Tmin, judged whether that power-assisted pole changer signal Tn effective time exists, described n is a positive integer, when not having a servo-steering on-off signal effective time, Tn existed, finishes; As the servo-steering on-off signal when effective time, Tn existed, judge that whether servo-steering on-off signal Tn effective time is less than nominal time Tmin, as servo-steering on-off signal Tn effective time during less than nominal time Tmin, then logical process signal Tout effective time is taken as 2 * Tmin; As servo-steering on-off signal Tn effective time during greater than nominal time Tmin, then logical process signal Tout effective time is taken as Tmin+Tn; Described logical process signal Tout effective time is the low level time of logical process signal, is the time length that electric injection system control unit ECU regulates engine power;
(4) as servo-steering on-off signal T0 effective time during greater than nominal time Tmin, logical process signal Tout effective time is taken as servo-steering on-off signal T0 effective time;
(5) finish.
Wherein, servo-steering on-off signal T0 effective time ..., Tn is an interlude between adjacent falling edge of servo-steering on-off signal and the positive rise.Logical process signal Tout effective time is the time length that electric injection system control unit ECU regulates engine power, and the initial moment of logical process signal Tout effective time is identical with the initial moment of servo-steering on-off signal T0 effective time.
Fig. 3 is the sequential chart of power-assisted change-over swith signal and logical process signal.As seen from the figure, when servo-steering on-off signal T0 effective time less than nominal time Tmin, and do not have servo-steering on-off signal Tn effective time to exist when nominal time Tmin finishes, wherein n is a positive integer, and then logical process signal Tout effective time is taken as nominal time Tmin.As servo-steering on-off signal T0 effective time during greater than nominal time Tmin, logical process signal Tout effective time is taken as servo-steering on-off signal T0 effective time.When servo-steering on-off signal T0 effective time less than nominal time Tmin, and when finishing, have the nominal time Tmin time power-assisted pole changer signal Tn effective time to exist, in the present embodiment, n is 1, as servo-steering on-off signal T1 effective time during less than nominal time Tmin, then Tout is 2 * Tmin; As T1 during greater than nominal time Tmin, then logical process signal Tout effective time is taken as Tmin+T1.In the present embodiment, as servo-steering on-off signal T1 effective time during less than nominal time Tmin, only provided the example of the lasting 2 * Tmin of logical process signal Tout effective time, p * Tmin is during the moment when logical process signal Tout effective time arrives, and wherein, p is the integer greater than 1, the existence of power-assisted pole changer signal Tm effective time is arranged again, wherein, m is the integer greater than n, then continues according to above-mentioned determination methods value.
Can also set in this signal processing method and demarcate Tdelay delay time, in the present embodiment, demarcation Tdelay delay time is taken as 50ms, as shown in Figure 3, when the time gap Tsp between adjacent two sections logical process signal Tout effective time greater than demarcating delay time during Tdelay, the actual delay time T int between adjacent two sections logical process signal Tout effective time is taken as time gap Tsp; When the time gap Tsp between adjacent two sections logical process signal Tout effective time less than demarcating delay time during Tdelay, actual delay time T int is taken as and demarcates Tdelay delay time.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the present invention.
Claims (6)
1. an automobile hydraulic electric power steering on-off signal processing method is characterized in that: comprise the steps:
(1) sets nominal time Tmin;
(2) judge that whether servo-steering on-off signal T0 effective time is less than nominal time Tmin;
(3) as servo-steering on-off signal T0 effective time during less than nominal time Tmin, logical process signal Tout effective time is taken as nominal time Tmin; When logical process signal Tout effective time lasts till nominal time Tmin, judged whether that power-assisted pole changer signal Tn effective time exists, described n is a positive integer, when not having a servo-steering on-off signal effective time, Tn existed, finishes; As the servo-steering on-off signal when effective time, Tn existed, judge that whether servo-steering on-off signal Tn effective time is less than nominal time Tmin, as servo-steering on-off signal Tn effective time during less than nominal time Tmin, then logical process signal Tout effective time is taken as 2 * Tmin; As servo-steering on-off signal Tn effective time during greater than nominal time Tmin, then logical process signal Tout effective time is taken as Tmin+Tn; Described logical process signal Tout effective time is the low level time of logical process signal, is the time length that electric injection system control unit ECU regulates engine power;
(4) as servo-steering on-off signal T0 effective time during greater than nominal time Tmin, logical process signal Tout effective time is taken as servo-steering on-off signal T0 effective time;
(5) finish.
2. automobile hydraulic electric power steering on-off signal processing method as claimed in claim 1, it is characterized in that: in described signal processing method, also set and demarcate Tdelay delay time, when the time gap Tsp between adjacent two sections logical process signal Tout effective time greater than demarcating delay time during Tdelay, the actual delay time T int between adjacent two sections logical process signal Tout effective time is taken as time gap Tsp; When the time gap Tsp between adjacent two sections logical process signal Tout effective time less than demarcating delay time during Tdelay, actual delay time T int is taken as and demarcates Tdelay delay time.
3. automobile hydraulic electric power steering on-off signal processing method as claimed in claim 2 is characterized in that: described demarcation Tdelay delay time is 50ms.
4. automobile hydraulic electric power steering on-off signal processing method as claimed in claim 1 is characterized in that: described servo-steering on-off signal T0 effective time ..., Tn is an interlude between adjacent falling edge of servo-steering on-off signal and the positive rise.
5. automobile hydraulic electric power steering on-off signal processing method as claimed in claim 1 is characterized in that: the initial moment of described logical process signal Tout effective time is identical with the initial moment of servo-steering on-off signal T0 effective time.
6. automobile hydraulic electric power steering on-off signal processing method as claimed in claim 1 is characterized in that: described nominal time Tmin is 100ms.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100072241A CN102085860B (en) | 2011-01-14 | 2011-01-14 | Automobile hydraulic power-assisted steering switching signal processing method |
| PE2012000698A PE20130573A1 (en) | 2011-01-14 | 2011-06-20 | PROCEDURE TO PROCESS A VEHICLE HYDRAULIC ASSISTED STEERING SWITCH SIGNAL |
| PCT/CN2011/075944 WO2012094870A1 (en) | 2011-01-14 | 2011-06-20 | Signal processing method for hydraulic power steering switch of vehicle |
| TR2012/04099T TR201204099T1 (en) | 2011-01-14 | 2011-06-20 | Method for processing the hydraulic power steering switch signal of the vehicle. |
| IL219918A IL219918A (en) | 2011-01-14 | 2012-05-21 | Method for processing hydraulic power steering switch signal of vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100072241A CN102085860B (en) | 2011-01-14 | 2011-01-14 | Automobile hydraulic power-assisted steering switching signal processing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102085860A true CN102085860A (en) | 2011-06-08 |
| CN102085860B CN102085860B (en) | 2013-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100072241A Expired - Fee Related CN102085860B (en) | 2011-01-14 | 2011-01-14 | Automobile hydraulic power-assisted steering switching signal processing method |
Country Status (5)
| Country | Link |
|---|---|
| CN (1) | CN102085860B (en) |
| IL (1) | IL219918A (en) |
| PE (1) | PE20130573A1 (en) |
| TR (1) | TR201204099T1 (en) |
| WO (1) | WO2012094870A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012094870A1 (en) * | 2011-01-14 | 2012-07-19 | 重庆力帆电喷软件有限公司 | Signal processing method for hydraulic power steering switch of vehicle |
| CN104044574A (en) * | 2013-03-11 | 2014-09-17 | 福特全球技术公司 | Control for stop/start vehicle when approaching controlled intersections |
| CN112162500A (en) * | 2020-08-24 | 2021-01-01 | 东风电驱动系统有限公司 | Switching signal processing method and system |
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2011
- 2011-01-14 CN CN2011100072241A patent/CN102085860B/en not_active Expired - Fee Related
- 2011-06-20 PE PE2012000698A patent/PE20130573A1/en active IP Right Grant
- 2011-06-20 TR TR2012/04099T patent/TR201204099T1/en unknown
- 2011-06-20 WO PCT/CN2011/075944 patent/WO2012094870A1/en active Application Filing
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2012
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012094870A1 (en) * | 2011-01-14 | 2012-07-19 | 重庆力帆电喷软件有限公司 | Signal processing method for hydraulic power steering switch of vehicle |
| CN104044574A (en) * | 2013-03-11 | 2014-09-17 | 福特全球技术公司 | Control for stop/start vehicle when approaching controlled intersections |
| CN112162500A (en) * | 2020-08-24 | 2021-01-01 | 东风电驱动系统有限公司 | Switching signal processing method and system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102085860B (en) | 2013-04-03 |
| TR201204099T1 (en) | 2012-11-21 |
| PE20130573A1 (en) | 2013-04-27 |
| WO2012094870A1 (en) | 2012-07-19 |
| IL219918A (en) | 2015-10-29 |
| IL219918A0 (en) | 2012-07-31 |
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