CN103629340A - Control method and control device for transmission - Google Patents
Control method and control device for transmission Download PDFInfo
- Publication number
- CN103629340A CN103629340A CN201310631947.8A CN201310631947A CN103629340A CN 103629340 A CN103629340 A CN 103629340A CN 201310631947 A CN201310631947 A CN 201310631947A CN 103629340 A CN103629340 A CN 103629340A
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- China
- Prior art keywords
- input shaft
- transmission input
- clutch
- speed
- speed probe
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- F16H61/12—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures
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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
- F16H61/14—Control of torque converter lock-up clutches
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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
- F16H61/12—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures
- F16H2061/1224—Adapting to failures or work around with other constraints, e.g. circumvention by avoiding use of failed parts
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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
- F16H61/12—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures
- F16H2061/1256—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures characterised by the parts or units where malfunctioning was assumed or detected
- F16H2061/1284—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures characterised by the parts or units where malfunctioning was assumed or detected the failing part is a sensor
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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
- F16H61/14—Control of torque converter lock-up clutches
- F16H61/143—Control of torque converter lock-up clutches using electric control means
- F16H2061/145—Control of torque converter lock-up clutches using electric control means for controlling slip, e.g. approaching target slip value
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Transmission Device (AREA)
Abstract
The invention provides a control method for a transmission and a control device for implementing the method. In the control method, when a speed sensor of an input shaft of the transmission fails, a product of the longitudinal acceleration of a vehicle and the engaged transmission ratio and main reduction ratio of the transmission are taken as the rotating speed value of the input shaft of the transmission, and the slip frequency of a clutch is calculated accordingly. The control device comprises a transmission input shaft speed sensor failure diagnosis unit and a clutch slip frequency acquisition unit which are connected with each other. According to the control method and the control device, an approximate value close to the rotating speed of the input shaft of the transmission can be obtained when the speed sensor of the input shaft of the transmission fails, so that the obtained clutch slip frequency and clutch engaging speed are relatively accurate, and the problem of great reduction in the comfort and safety of the vehicle caused by failure of the sensor of the input shaft of the transmission is solved.
Description
Technical field
The invention belongs to vehicle transmission technical field, relate to controlling method and the control gear of speed changer.
Background technique
In the vehicle of automatic mechanical transmission (AMT) is housed, at clutch during in cohesive process, by transmission input shaft speed probe, detect transmission input shaft rotating speed, calculate successively the difference of active part rotating speed and the transmission input shaft rotating speed of clutch, and then solenoidoperated cluthes combination.Therefore, once this sensor failure, the result of calculation of the difference of clutch active part rotating speed and transmission input shaft rotating speed just there will be mistake, thereby make controlled clutch pressure inaccurate, very easily cause vehicle jitter phenomenon, when serious, even there will be the power interruption phenomenons such as engine misses, light have influence on occupant's riding comfort, or vehicle can not continue to travel, heavy can the Security of vehicle be caused and be had a strong impact on.
When there is the situation of above-mentioned transmission input shaft sensor failure, it is separated gradually that the controlling method of prior art has plenty of the clutch of making, and finally makes vehicle parking, caused driver and passenger's inconvenience.The travelling comfort of therefore, that it(?) still can support vehicles in the situation that transmission input shaft speed probe lost efficacy travel, the technology of Security have extremely strong Research Significance and using value.
Summary of the invention
The object of the present invention is to provide a kind of controlling method and control gear of speed changer, support vehicles travelling comfort and Security in the situation that transmission input shaft speed probe lost efficacy.
In order to achieve the above object, solution of the present invention is:
A controlling method for speed changer, described controlling method comprises the following steps:
(1) judge whether transmission input shaft speed probe breaks down; If broken down, enter step (2); Otherwise, enter step (3);
(2) according to following formula, calculate transmission input shaft rotating speed substitution value, as transmission input shaft tachometer value, and enter step (3):
Transmission input shaft rotating speed substitution value=longitudinal direction of car acceleration * speed changer is at shelves velocity ratio * base ratio
(3) using the checkout value of transmission input shaft speed probe as transmission input shaft tachometer value.
Described controlling method also comprises step (4) afterwards in described step (3): according to described transmission input shaft tachometer value, calculate clutch slip.
Described controlling method also comprises afterwards in described step (4): according to described clutch slip, calculate clutch in conjunction with speed.
Described controlling method also comprises before in described step (1): judge that whether clutch is in bonding state; If so, enter step (1); If not, finish.
A kind of control gear of realizing above-mentioned controlling method, comprise transmission input shaft speed probe failure diagnosis unit, to judge whether transmission input shaft speed probe works, and the clutch slip acquiring unit being connected with described transmission input shaft speed probe failure diagnosis unit, to receive the working state of the transmission input shaft speed probe of described transmission input shaft speed probe failure diagnosis unit judgement, and when transmission input shaft speed probe works, the tachometer value of the transmission input shaft detecting according to transmission input shaft speed probe calculates clutch slip, and when transmission input shaft speed probe breaks down, the transmission input shaft rotating speed substitution value of calculating according to following formula is as transmission input shaft tachometer value, and calculate clutch slip according to described transmission input shaft tachometer value:
Transmission input shaft rotating speed substitution value=longitudinal direction of car acceleration * speed changer is at shelves velocity ratio * base ratio
Wherein, described speed changer is given value at shelves velocity ratio, according to the difference of speed changer place gear and difference.
Described control gear also comprises that the clutch connecting with described clutch slip acquiring unit is combined speed acquiring unit, the described clutch slip obtaining to receive described clutch slip acquiring unit, and calculate clutch in conjunction with speed according to described clutch slip.
Described control gear also comprises the clutch bonding state judging unit being connected with described transmission input shaft speed probe failure diagnosis unit, with the bonding state of judgement clutch, and at clutch, trigger described transmission input shaft sensor fault diagnosis cell operation during in bonding state.
Owing to adopting such scheme, the invention has the beneficial effects as follows: controlling method and control gear that the transmission input shaft speed probe that the present invention proposes lost efficacy, can be when transmission input shaft speed probe breaks down, acquisition approaches the approximative value of transmission input shaft rotating speed, thereby the clutch slip and the clutch that obtain are also comparatively accurate in conjunction with speed, solved the problem that vehicle riding comfort that transmission input shaft sensor failure causes and Security reduce greatly.The present invention has guaranteed travelling comfort and the Security of vehicle effectively, has greatly improved the market competitiveness of vehicle.
Accompanying drawing explanation
Fig. 1 is the flow chart of the controlling method of transmission input shaft sensor failure in the embodiment of the present invention;
Fig. 2 is the structural representation of the control gear of transmission input shaft sensor failure in the embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing illustrated embodiment, the present invention is further illustrated.
The present invention proposes a kind ofly after transmission input shaft speed probe lost efficacy, still can guarantee that vehicle normally moves, the controlling method of support vehicles travelling comfort and Security.
Controlling method of the present invention comprises the following steps:
(1) judge that clutch whether in cohesive process, if so, enters step (2); If not, enter step (6);
(2) detect transmission input shaft speed probe and whether break down, if so, enter step (3); Otherwise enter step (4);
(3) value of calculating according to the following equation speed changer input speed to be to substitute the checkout value of transmission input shaft speed probe, and calculates clutch slip according to this value, and enters step (5):
Transmission input shaft rotating speed=longitudinal direction of car acceleration * speed changer is at shelves velocity ratio * base ratio
Wherein, speed changer is given value at shelves velocity ratio in this controlling method, according to the difference of speed changer place gear and difference;
(4) the clutch input speed gathering according to transmission input shaft speed probe calculates the slippage of clutch, and enters step (5).
(5) calculate clutch in conjunction with speed, and enter step (6);
(6) finish.
Be the flow chart of above-mentioned controlling method as described in Figure 1.
The invention allows for a kind of control gear of realizing the controlling method of above-mentioned transmission input shaft speed probe inefficacy, this control gear comprises that the clutch bonding state judging unit, transmission input shaft speed probe failure diagnosis unit, clutch slip acquiring unit and the clutch that connect successively, in conjunction with speed acquiring unit, Figure 2 shows that the structural representation of this control gear.
The effect of clutch bonding state is the bonding state of judging unit judgement clutch, and triggers transmission input shaft sensor fault diagnosis cell operation during in bonding state at clutch.
The effect of transmission input shaft speed probe failure diagnosis unit is the working state of judgement transmission input shaft speed probe, and the result of this fault diagnosis is sent to clutch slip acquiring unit.
Clutch slip acquiring unit receives the working state of the transmission input shaft speed probe of transmission input shaft speed probe failure diagnosis unit judgement, and when transmission input shaft speed probe works, the tachometer value of the transmission input shaft detecting according to transmission input shaft speed probe calculates clutch slip; And when transmission input shaft speed probe breaks down, according to the calculated value of following formula, as transmission input shaft rotating speed substitution value, and calculate successively clutch slip.Clutch slip acquiring unit obtains after clutch slip, sends it to clutch in conjunction with speed acquiring unit.
Transmission input shaft rotating speed substitution value=longitudinal direction of car acceleration * speed changer is at shelves velocity ratio * base ratio
Wherein, speed changer is given value at shelves velocity ratio, according to the difference of speed changer place gear and difference.
Clutch receives in conjunction with speed acquiring unit the clutch slip that clutch slip acquiring unit sends, and calculates clutch in conjunction with speed according to this clutch slip.
Controlling method and the control gear of the input shaft rotating speed sensor failure that the present invention proposes, can be when transmission input shaft speed probe breaks down, acquisition approaches the approximative value of transmission input shaft rotating speed, thereby the clutch slip and the clutch that obtain are also comparatively accurate in conjunction with speed, solved the problem that vehicle riding comfort that transmission input shaft sensor failure causes and Security reduce greatly.The present invention has guaranteed travelling comfort and the Security of vehicle effectively, has greatly improved the market competitiveness of vehicle.
The above-mentioned description to embodiment is can understand and apply the invention for ease of those skilled in the art.Person skilled in the art obviously can easily make various modifications to these embodiments, and General Principle described herein is applied in other embodiments and needn't passes through performing creative labour.Therefore, the invention is not restricted to the embodiment here, those skilled in the art are according to announcement of the present invention, and not departing from the improvement that category of the present invention makes and revise all should be within protection scope of the present invention.
Claims (7)
1. a controlling method for speed changer, is characterized in that: described controlling method comprises the following steps:
(1) judge whether transmission input shaft speed probe breaks down; If broken down, enter step (2); Otherwise, enter step (3);
(2) according to following formula, calculate transmission input shaft rotating speed substitution value, as transmission input shaft tachometer value, and enter step (3):
Transmission input shaft rotating speed substitution value=longitudinal direction of car acceleration * speed changer is at shelves velocity ratio * base ratio
(3) using the checkout value of transmission input shaft speed probe as transmission input shaft tachometer value.
2. the controlling method of speed changer according to claim 1, is characterized in that: described controlling method also comprises step (4) afterwards in described step (3): according to described transmission input shaft tachometer value, calculate clutch slip.
3. the controlling method of speed changer according to claim 2, is characterized in that: described controlling method also comprises afterwards in described step (4): according to described clutch slip, calculate clutch in conjunction with speed.
4. the controlling method of speed changer according to claim 1, is characterized in that: described controlling method also comprises before in described step (1):
Judge that whether clutch is in bonding state; If so, enter step (1); If not, finish.
5. a control gear of realizing method claimed in claim 1, is characterized in that: described control gear comprises transmission input shaft speed probe failure diagnosis unit, to judge whether transmission input shaft speed probe works, and
The clutch slip acquiring unit being connected with described transmission input shaft speed probe failure diagnosis unit, to receive the working state of the transmission input shaft speed probe of described transmission input shaft speed probe failure diagnosis unit judgement, and when transmission input shaft speed probe works, the tachometer value of the transmission input shaft detecting according to transmission input shaft speed probe calculates clutch slip; And when transmission input shaft speed probe breaks down, the transmission input shaft rotating speed substitution value of calculating according to following formula is as transmission input shaft tachometer value, and calculate clutch slip according to described transmission input shaft tachometer value:
Transmission input shaft rotating speed substitution value=longitudinal direction of car acceleration * speed changer is at shelves velocity ratio * base ratio.
6. control gear according to claim 5, it is characterized in that: described control gear also comprises that the clutch connecting with described clutch slip acquiring unit is combined speed acquiring unit, the described clutch slip obtaining to receive described clutch slip acquiring unit, and calculate clutch in conjunction with speed according to described clutch slip.
7. control gear according to claim 5, it is characterized in that: described control gear also comprises the clutch bonding state judging unit being connected with described transmission input shaft speed probe failure diagnosis unit, with the bonding state of judgement clutch, and at clutch, trigger described transmission input shaft sensor fault diagnosis cell operation during in bonding state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310631947.8A CN103629340A (en) | 2013-11-29 | 2013-11-29 | Control method and control device for transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310631947.8A CN103629340A (en) | 2013-11-29 | 2013-11-29 | Control method and control device for transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103629340A true CN103629340A (en) | 2014-03-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310631947.8A Pending CN103629340A (en) | 2013-11-29 | 2013-11-29 | Control method and control device for transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103629340A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108953591A (en) * | 2017-05-19 | 2018-12-07 | 上海汽车集团股份有限公司 | A kind of the downshift control method and device of double-clutch speed changer |
| US11835130B1 (en) | 2022-10-12 | 2023-12-05 | Caterpillar Inc. | Electric drive system for machine configured for switching sensor data sourcing pattern based on health status |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4461188A (en) * | 1981-12-23 | 1984-07-24 | Ford Motor Company | Dual clutch multiple countershaft transmission |
| WO2004070232A1 (en) * | 2003-02-08 | 2004-08-19 | Zf Friedrichshafen Ag | Method for automatically controlling a transmission brake of an automatic transmission configured as a countershaft transmission |
| CN101324270A (en) * | 2007-06-13 | 2008-12-17 | 日产自动车株式会社 | Vehicle engine control apparatus |
| CN102648365A (en) * | 2009-10-09 | 2012-08-22 | 标致·雪铁龙汽车公司 | Method for controlling a semiautomatic gearbox for a hybrid or dual-clutch automobile |
| CN102853067A (en) * | 2012-09-06 | 2013-01-02 | 浙江吉利汽车研究院有限公司杭州分公司 | Method and device for controlling failure of input shaft speed sensor of AMT |
| CN103527773A (en) * | 2013-10-29 | 2014-01-22 | 浙江吉利控股集团有限公司 | Method and device for controlling failure of input shaft speed sensor in automotive AMT (automated mechanical transmission) |
| CN103542087A (en) * | 2013-10-12 | 2014-01-29 | 浙江吉利控股集团有限公司 | Method and device for fault-tolerant control of automatic speed changer input shaft rotating speed sensor |
-
2013
- 2013-11-29 CN CN201310631947.8A patent/CN103629340A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4461188A (en) * | 1981-12-23 | 1984-07-24 | Ford Motor Company | Dual clutch multiple countershaft transmission |
| WO2004070232A1 (en) * | 2003-02-08 | 2004-08-19 | Zf Friedrichshafen Ag | Method for automatically controlling a transmission brake of an automatic transmission configured as a countershaft transmission |
| CN101324270A (en) * | 2007-06-13 | 2008-12-17 | 日产自动车株式会社 | Vehicle engine control apparatus |
| CN102648365A (en) * | 2009-10-09 | 2012-08-22 | 标致·雪铁龙汽车公司 | Method for controlling a semiautomatic gearbox for a hybrid or dual-clutch automobile |
| CN102853067A (en) * | 2012-09-06 | 2013-01-02 | 浙江吉利汽车研究院有限公司杭州分公司 | Method and device for controlling failure of input shaft speed sensor of AMT |
| CN103542087A (en) * | 2013-10-12 | 2014-01-29 | 浙江吉利控股集团有限公司 | Method and device for fault-tolerant control of automatic speed changer input shaft rotating speed sensor |
| CN103527773A (en) * | 2013-10-29 | 2014-01-22 | 浙江吉利控股集团有限公司 | Method and device for controlling failure of input shaft speed sensor in automotive AMT (automated mechanical transmission) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108953591A (en) * | 2017-05-19 | 2018-12-07 | 上海汽车集团股份有限公司 | A kind of the downshift control method and device of double-clutch speed changer |
| CN108953591B (en) * | 2017-05-19 | 2020-08-04 | 上海汽车集团股份有限公司 | Downshift control method and device of dual-clutch transmission |
| US11835130B1 (en) | 2022-10-12 | 2023-12-05 | Caterpillar Inc. | Electric drive system for machine configured for switching sensor data sourcing pattern based on health status |
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Application publication date: 20140312 |
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