CN110131404B - Application method of AMT clutch displacement sensor - Google Patents
Application method of AMT clutch displacement sensor Download PDFInfo
- Publication number
- CN110131404B CN110131404B CN201910285591.4A CN201910285591A CN110131404B CN 110131404 B CN110131404 B CN 110131404B CN 201910285591 A CN201910285591 A CN 201910285591A CN 110131404 B CN110131404 B CN 110131404B
- Authority
- CN
- China
- Prior art keywords
- clutch
- displacement sensor
- rotating speed
- fault
- displacement
- Prior art date
- 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.)
- Active
Links
Images
Classifications
-
- 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
-
- 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
- F16H2061/1208—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures with diagnostic check cycles; Monitoring of failures
- F16H2061/1216—Display or indication of detected failures
-
- 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
- F16H2061/1276—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 friction device, e.g. clutches or brakes
- F16H2061/128—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 friction device, e.g. clutches or brakes the main clutch
Abstract
A method for using an AMT clutch displacement sensor comprises the steps of judging that a clutch is in a complete combination state according to displacement signals collected by the clutch displacement sensor, then calculating the difference between the rotating speed of an input shaft and the rotating speed of an engine to obtain a rotating speed difference, then checking the rotating speed difference, judging that the clutch displacement sensor has a fault if the checking fails, judging the displacement state of the clutch without using the displacement signals collected by the clutch displacement sensor, and replacing the displacement state with other signals. The design can not only judge the fault of the clutch displacement sensor, but also has the function of fault handling, and the safety is higher.
Description
Technical Field
The invention relates to a clutch fault detection technology, belongs to the field of AMT (automated mechanical transmission), in particular to a using method of an AMT (automated mechanical transmission) clutch displacement sensor, and is particularly suitable for performing fault judgment on the clutch displacement sensor and setting a countermeasure.
Background
At present, the displacement control of the AMT clutch depends on a clutch displacement sensor, but due to the installation characteristic of the clutch displacement sensor, whether the clutch displacement sensor is reliable or not can not be judged directly through displacement. When the collected value of the clutch displacement sensor is inconsistent with the actual displacement, if the displacement of the clutch cannot be known to be unreliable in time, the control of the AMT clutch can be influenced, so that the clutch is abnormally worn, gear shifting is stopped, and even an engine is dragged to be flamed out during driving.
The invention patent application with application publication number CN104500626A and application publication date 2015, 4 and 8 discloses a manual-gear automobile clutch monitoring system, which at least comprises a displacement sensor arranged on a flywheel of an automobile clutch, a displacement processing unit arranged on the flywheel and a monitoring unit arranged in an automobile, wherein the output end of the displacement sensor is connected with the displacement processing unit, the displacement processing unit is connected with the monitoring unit, and the design judges the state of the clutch through the displacement sensor and the displacement processing unit so as to know that the clutch is in a separation state, a semi-separation state (namely semi-linkage state) or a laminating state (namely linkage state), so that a driver can reasonably drive the automobile, but the design still has the following defects:
the design uses the collected information of the displacement sensor as the basis to judge the displacement of the clutch, the default displacement sensor is constant and has no fault, the design of fault judgment on the displacement sensor is lacked, and the blind information of the displacement sensor is easily caused to cause accidents.
The information disclosed in this background section is only for enhancement of understanding of the general background of the patent application and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
The invention aims to overcome the defects and problems that the clutch displacement sensor cannot be subjected to fault judgment in the prior art, and provides a using method of an AMT clutch displacement sensor capable of performing fault judgment on the clutch displacement sensor.
In order to achieve the above purpose, the technical solution of the invention is as follows: a method of using an AMT clutch displacement sensor, the method comprising the steps of:
a fault judgment step: judging that the clutch is in a complete combination state according to a displacement signal acquired by a clutch displacement sensor, then calculating the difference between the rotating speed of an input shaft and the rotating speed of an engine to obtain a rotating speed difference, and then verifying the rotating speed difference, wherein if the verification is passed, the clutch displacement sensor has no fault, and if the verification is not passed, the clutch displacement sensor has a fault;
and a fault handling step: when the clutch displacement sensor has no fault, judging the displacement state of the clutch by using a displacement signal acquired by the clutch displacement sensor; when the clutch displacement sensor has a fault, the displacement signal acquired by the clutch displacement sensor is not used for judging the displacement state of the clutch.
The verification passing means that the rotating speed difference does not exceed a threshold value, the verification failing means that the rotating speed difference exceeds the threshold value, and the threshold value is 30 rpm-70 rpm.
The threshold is 50 rpm.
In the failure coping step, when the clutch displacement sensor has a failure, the clutch displacement state is judged by using the rotating speed difference.
In the fault coping step, when the clutch displacement sensor has a fault, the motion rate and the motion state of the clutch are limited, the continuous sliding abrasion of the clutch is reduced, and the operation of shifting in the clutch combination state is reduced.
The judgment that the clutch is in a complete combination state according to the displacement signal acquired by the clutch displacement sensor is as follows: and when the displacement signal acquired by the clutch displacement sensor indicates that the clutch displacement is within 0-2 cm, the clutch is judged to be in a complete combination state.
The rotating speed of the input shaft is acquired by an input shaft rotating speed sensor, and then calculated according to the gear ratio of the front auxiliary box.
The engine speed is obtained from a bus.
Before the speed difference is verified, the errors of the engine speed signal and the faults of the AMT input shaft speed sensor are eliminated.
Compared with the prior art, the invention has the beneficial effects that:
1. in the application method of the AMT clutch displacement sensor, when the clutch displacement sensor is judged to be in fault, the clutch displacement sensor is firstly defaulted to be normal, then the clutch is in a complete combination state as an entry point, then the difference between the rotating speed of an input shaft and the rotating speed of an engine is obtained to obtain the rotating speed difference, and then the rotating speed difference is verified to judge whether the clutch displacement sensor is in fault. Therefore, the invention can judge the fault of the clutch displacement sensor.
2. In the application method of the AMT clutch displacement sensor, a fault handling step is also arranged in addition to the fault judging step, so that when the clutch displacement sensor breaks down, a corresponding fault solving design is provided, and accidents are avoided. Therefore, the invention has the function of coping with the fault and higher safety.
3. In the application method of the AMT clutch displacement sensor, when the rotation speed difference is verified, the rotation speed difference is compared with the threshold value, if the rotation speed difference exceeds the threshold value, the verification is not passed, if the rotation speed difference does not exceed the threshold value, the verification is passed, and the threshold value is 30 rpm-70 rpm, preferably 50 rpm. Therefore, the accuracy of the invention is high.
Drawings
FIG. 1 is a flow chart of the operation of the present invention.
Fig. 2 is a schematic structural diagram of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following description and embodiments in conjunction with the accompanying drawings.
Referring to fig. 1 and 2, a method for using an AMT clutch displacement sensor includes the following steps:
a fault judgment step: judging that the clutch is in a complete combination state according to a displacement signal acquired by a clutch displacement sensor, then calculating the difference between the rotating speed of an input shaft and the rotating speed of an engine to obtain a rotating speed difference, and then verifying the rotating speed difference, wherein if the verification is passed, the clutch displacement sensor has no fault, and if the verification is not passed, the clutch displacement sensor has a fault;
and a fault handling step: when the clutch displacement sensor has no fault, judging the displacement state of the clutch by using a displacement signal acquired by the clutch displacement sensor; when the clutch displacement sensor has a fault, the displacement signal acquired by the clutch displacement sensor is not used for judging the displacement state of the clutch.
The verification passing means that the rotating speed difference does not exceed a threshold value, the verification failing means that the rotating speed difference exceeds the threshold value, and the threshold value is 30 rpm-70 rpm.
The threshold is 50 rpm.
In the failure coping step, when the clutch displacement sensor has a failure, the clutch displacement state is judged by using the rotating speed difference.
In the fault coping step, when the clutch displacement sensor has a fault, the motion rate and the motion state of the clutch are limited, the continuous sliding abrasion of the clutch is reduced, and the operation of shifting in the clutch combination state is reduced.
The judgment that the clutch is in a complete combination state according to the displacement signal acquired by the clutch displacement sensor is as follows: and when the displacement signal acquired by the clutch displacement sensor indicates that the clutch displacement is within 0-2 cm, the clutch is judged to be in a complete combination state.
The rotating speed of the input shaft is acquired by an input shaft rotating speed sensor, and then calculated according to the gear ratio of the front auxiliary box.
The engine speed is obtained from a bus.
Before the speed difference is verified, the errors of the engine speed signal and the faults of the AMT input shaft speed sensor are eliminated.
The principle of the invention is illustrated as follows:
in the prior art, the displacement of the clutch is strongly related to the rotating speed of the input shaft, the state of the clutch is determined by the actual displacement of the clutch (in the invention, the clutch is in a complete combination state when the displacement of the clutch is within 0-2 cm), and the rotating speed of the input shaft is synchronous with the rotating speed of the engine under the normal condition when the clutch is in the complete combination state.
Example 1:
referring to fig. 1 and 2, a method for using an AMT clutch displacement sensor includes the following steps:
a fault judgment step: judging that the clutch is in a complete combination state according to a displacement signal acquired by a clutch displacement sensor, then calculating the difference between the rotating speed of an input shaft and the rotating speed of an engine to obtain a rotating speed difference, and then verifying the rotating speed difference, wherein if the verification is passed, the clutch displacement sensor has no fault, and if the verification is not passed, the clutch displacement sensor has a fault; the verification is passed, namely the rotating speed difference does not exceed a threshold value, the verification is failed, namely the rotating speed difference exceeds the threshold value, and the threshold value is 30-70 rpm;
and a fault handling step: when the clutch displacement sensor has no fault, judging the displacement state of the clutch by using a displacement signal acquired by the clutch displacement sensor; when the clutch displacement sensor has a fault, the displacement signal acquired by the clutch displacement sensor is not used for judging the displacement state of the clutch.
Example 2:
the basic contents are the same as example 1, except that:
in the fault handling step, when the clutch displacement sensor has a fault, the clutch displacement state is judged by using the rotating speed difference, and meanwhile, the movement rate and the movement state of the clutch are limited, so that the continuous sliding wear of the clutch is reduced, and the operation of shifting gears in the clutch combination state is reduced.
The above description is only a preferred embodiment of the present invention, and the scope of the present invention is not limited to the above embodiment, but equivalent modifications or changes made by those skilled in the art according to the present disclosure should be included in the scope of the present invention as set forth in the appended claims.
Claims (8)
1. A method of using an AMT clutch displacement sensor, comprising the steps of:
a fault judgment step: judging that the clutch is in a complete combination state according to a displacement signal acquired by a clutch displacement sensor, then calculating the difference between the rotating speed of an input shaft and the rotating speed of an engine to obtain a rotating speed difference, and then verifying the rotating speed difference, wherein if the verification is passed, the clutch displacement sensor has no fault, and if the verification is not passed, the clutch displacement sensor has a fault;
and a fault handling step: when the clutch displacement sensor has no fault, judging the displacement state of the clutch by using a displacement signal acquired by the clutch displacement sensor; when the clutch displacement sensor has a fault, judging the displacement state of the clutch without using a displacement signal acquired by the clutch displacement sensor;
the verification passing means that the rotating speed difference does not exceed a threshold value, the verification failing means that the rotating speed difference exceeds the threshold value, and the threshold value is 30 rpm-70 rpm.
2. The method of using an AMT clutch displacement sensor according to claim 1, wherein: the threshold is 50 rpm.
3. Use of an AMT-clutch displacement sensor according to claim 1 or 2, characterized in that: in the failure coping step, when the clutch displacement sensor has a failure, the clutch displacement state is judged by using the rotating speed difference.
4. The method of using an AMT clutch displacement sensor according to claim 3, wherein: in the fault coping step, when the clutch displacement sensor has a fault, the motion rate and the motion state of the clutch are limited, the continuous sliding abrasion of the clutch is reduced, and the operation of shifting in the clutch combination state is reduced.
5. Use of an AMT-clutch displacement sensor according to claim 1 or 2, characterized in that: the judgment that the clutch is in a complete combination state according to the displacement signal acquired by the clutch displacement sensor is as follows: and when the displacement signal acquired by the clutch displacement sensor indicates that the clutch displacement is within 0-2 cm, the clutch is judged to be in a complete combination state.
6. Use of an AMT-clutch displacement sensor according to claim 1 or 2, characterized in that: the rotating speed of the input shaft is acquired by an input shaft rotating speed sensor, and then calculated according to the gear ratio of the front auxiliary box.
7. Use of an AMT-clutch displacement sensor according to claim 1 or 2, characterized in that: the engine speed is obtained from a bus.
8. Use of an AMT-clutch displacement sensor according to claim 1 or 2, characterized in that: before the speed difference is verified, the errors of the engine speed signal and the faults of the AMT input shaft speed sensor are eliminated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910285591.4A CN110131404B (en) | 2019-04-10 | 2019-04-10 | Application method of AMT clutch displacement sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910285591.4A CN110131404B (en) | 2019-04-10 | 2019-04-10 | Application method of AMT clutch displacement sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110131404A CN110131404A (en) | 2019-08-16 |
| CN110131404B true CN110131404B (en) | 2020-07-10 |
Family
ID=67569722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910285591.4A Active CN110131404B (en) | 2019-04-10 | 2019-04-10 | Application method of AMT clutch displacement sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110131404B (en) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005004339B4 (en) * | 2005-01-25 | 2009-01-08 | Getrag Getriebe- Und Zahnradfabrik Hermann Hagenmeyer Gmbh & Cie Kg | Use of a step change gearbox and method for controlling such |
| JP5741463B2 (en) * | 2012-01-27 | 2015-07-01 | トヨタ自動車株式会社 | Vehicle abnormality determination device |
| CN102537320A (en) * | 2012-02-27 | 2012-07-04 | 浙江吉利汽车研究院有限公司 | AMT (automated mechanical transmission) system and fault diagnosis method of clutch actuating mechanism thereof |
| KR101526216B1 (en) * | 2013-09-10 | 2015-06-05 | 현대 파워텍 주식회사 | Method for sensing abnormal clutch operation of vehicle using speed sensor value |
| CN103884265B (en) * | 2014-03-27 | 2016-10-05 | 吴江绿控电控科技有限公司 | A kind of displacement transducer failure detector circuit and control system thereof |
| CN104141785A (en) * | 2014-06-27 | 2014-11-12 | 北京理工大学 | Fault diagnosis method and system for automatic shift control system of AMT (Automatic Mechanical Transmission) heavy vehicle |
| CN104265876B (en) * | 2014-08-05 | 2016-07-13 | 潍柴动力股份有限公司 | Method for diagnosing faults that a kind of Clutch Control is failed and system |
| CN104276161B (en) * | 2014-09-22 | 2017-04-26 | 潍柴动力股份有限公司 | Method and system for controlling failed position sensor of clutch |
-
2019
- 2019-04-10 CN CN201910285591.4A patent/CN110131404B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN110131404A (en) | 2019-08-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107782917B (en) | Fault diagnosis and processing method for vehicle speed sensor | |
| US6547699B2 (en) | Method and apparatus for diagnosing a malfunction of a clutch actuator | |
| JP3796521B2 (en) | Failure diagnosis method and system for output shaft rotation speed detection sensor of transmission | |
| US7107134B1 (en) | Method of determining a default transmission output speed | |
| CN104455380B (en) | Double clutch gearbox OSS failure judgment method | |
| CN106644461B (en) | One kind being used for wet-type dual-clutch gearbox pressure fault diagnostic method | |
| KR880000074B1 (en) | Diagnostic processing system for automatic transmission of an automobile | |
| CN104455378A (en) | Fault diagnosis method of clutch | |
| US20160138709A1 (en) | Method of diagnosing malfunction in dual clutch transmission | |
| CN104196628B (en) | The on-line fault diagnosis processing method of diesel engine throttle position sensor | |
| US8311715B2 (en) | Motor vehicle transmission and method for monitoring frictional engagement in same in a preset neutral or parking position | |
| JP3724471B2 (en) | Automatic transmission failure determination device and failure determination method | |
| CN110131404B (en) | Application method of AMT clutch displacement sensor | |
| CN110005730B (en) | Method for diagnosing combination fault of wet type separating clutch of hybrid power car | |
| CN113819236B (en) | Method for determining failure in rotational speed of transmission, vehicle, and storage medium | |
| CN107031596B (en) | A kind of electric booster braking displacement sensor diagnostic method | |
| CN114755459A (en) | Method for monitoring state of rotating speed sensor based on residual error evaluation method | |
| Hu et al. | Sensor fault diagnosis and processing for a two-speed AMT for pure electric vehicles | |
| CN108177650B (en) | Hybrid electric vehicle and safety control method and system thereof | |
| US10174835B2 (en) | Method of diagnosing malfunction in dual clutch transmission | |
| KR20120079640A (en) | Fault diagnosis system for neutral switch and method thereof | |
| DE102013014746A1 (en) | Drive train device for a motor vehicle | |
| CN112436761B (en) | Magnetic steel crushing diagnosis method and diagnosis system for brushless motor position sensor | |
| CN115574085A (en) | Method for testing reliability of AMT gear displacement sensor | |
| CN114475103B (en) | Tire pressure monitoring system fault judging method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |