CN103612562A - Fault-tolerant electronic clutch system - Google Patents
Fault-tolerant electronic clutch system Download PDFInfo
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- CN103612562A CN103612562A CN201310626830.0A CN201310626830A CN103612562A CN 103612562 A CN103612562 A CN 103612562A CN 201310626830 A CN201310626830 A CN 201310626830A CN 103612562 A CN103612562 A CN 103612562A
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- fault
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- pedal position
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Abstract
The invention relates to a fault-tolerant electronic clutch system. The fault-tolerant electronic clutch system is located between an automobile clutch pedal and a clutch booster cylinder push rod. A clutch pedal position sensor is directly connected with the pedal. An output position signal of the sensor enters three duplication determinate fault restraining units of a pedal position sensor signal detection unit so that an accurate pedal position signal can be acquired, the pedal position signal is sent to a dual-channel FlexRay bus in the form of a message, the message on the FlexRay is read by a clutch fault-tolerant unit, the travel of the clutch booster cylinder push rod is calculated, analyzed and controlled, and therefore the purpose of controlling opening and closing of a clutch is achieved. The fault-tolerant electronic clutch system is tolerant of random failures of any fault restraining unit in any communication system or fault-tolerant unit and any motor in a triplication redundancy clutch booster cylinder push rod drive executer, and therefore the fault-tolerant capability of the electronic clutch system and the safe running ability of an automobile are improved, and the development of automobile electronic technologies is promoted.
Description
Technical field
The present invention relates to a kind of automotive electronic technology, particularly a kind of fault-tolerant electric clutch system.
Background technology
In the clutch bell of power-transfer clutch between driving engine and change speed gear box, with screw, clutch assembly is fixed on the back plane of flywheel, the output shaft of power-transfer clutch is exactly the input shaft of change speed gear box.In vehicle traveling process, chaufeur can be stepped on or release the clutch pedal as required, makes driving engine and change speed gear box temporary transient separated and engage gradually the power of inputting to change-speed box to cut off or to transmit driving engine.Power-transfer clutch divides substantially magnetic clutch, these are several for friction clutch, magnetic-powder clutch, hydraulic coupler.
Nineteen eighty-three, General Corporation released hydraulic automatic speed variator, adopted hydraulic coupler to replace common clutch equipment, and its advantage is that adaptivity is strong, the starting-up process that makes automobile steadily, rapidly, accelerate evenly, ride quality improves.But its efficient low such shortcoming.Within 1948, Buick car just managed has been used turbine transformer, and tor-con is compared the moment of torsion that not only can transmit driving engine with hydraulic coupler, can also be improved 1 times.Since the eighties except traditional dress is with the automatic transmission with hydraulic torque converter of turbine transformer, there is again new, Purely mechanical automatic transmission with hydraulic torque converter, it adds that by dry type clutch and traditional conventional gear box microcomputer control realizes manipulation automatically, conventionally than the hydraulic automatic speed variator fuel-economizing 10%～30% under same condition.
Along with the development of auto-industry, power-transfer clutch need to be updated and improve on existing basis, could adapt to the usage condition that new development changes.From external developments, in recent years the performance of automobile at a high speed, safety development, power and the rotating speed of driving engine improve constantly, autotruck trend maximizes, domestic also have a similar situation.Thereby, also more and more higher to the operating needs of power-transfer clutch.So the safety that improves power-transfer clutch has become the development tendency of current power-transfer clutch.
Summary of the invention
The present invention be directed to the more and more higher problem of vehicle electronics power-transfer clutch safety requirements, a kind of fault-tolerant electric clutch system has been proposed, realization can be fault-tolerant clutch control and method of designing thereof, the safety that has improved electric clutch system, reliability and maintainable etc.
Technical scheme of the present invention is: a kind of fault-tolerant electric clutch system, system is between vehicle electronics pedal of clutch and boosting cylinder for clutch push rod, comprise electric clutch pedal position sensor, fault-tolerant unit, two passage FlexRay buses, the triplication redundancy boosting cylinder for clutch push rod actr that CD-ROM drive motor and mechanical control bar form, wherein fault-tolerant unit F TU comprises pedal position sensor detecting signal unit and the fault-tolerant unit of power-transfer clutch, electronic pedal position transduser is directly connected with electric clutch pedal, the position signal output of electronic pedal position transduser enters 3 of pedal position sensor detecting signal unit and copies determinant fault and suppress unit, correct failure restraint unit will produce identical pedal position message, 3 are copied determinant fault and suppress unit by two passages of FlexRay bus, message is sent to the fault-tolerant unit of power-transfer clutch, the fault-tolerant unit of power-transfer clutch comprises 3 failure restraint unit, each failure restraint unit comprises an independently voting machine, in the voting machine of three identical algorithms, most result of calculation is sent triplication redundancy boosting cylinder for clutch push rod actr, the stroke of triplication redundancy boosting cylinder for clutch push rod actr control clutch servo cylinder push rod.
Described two passage FlexRay buses are the separate certainty passage that copies, and 3 are copied determinant fault and suppress each message that unit sends and send respectively two identical messages by two passage FlexRay buses.Described 3 are copied determinant fault and suppress in available message that unit produces, if two messages that copy determinant fault inhibition unit have identical bit pattern, choose the common output as pedal position sensor detecting signal unit triple in these two messages.
Described triplication redundancy boosting cylinder for clutch push rod actuate actuators comprises three motors, and each motor is connected with one of three failure restraint unit output of the fault-tolerant unit of power-transfer clutch respectively, and the strength sum of any two motors surpasses the 3rd motor.
Beneficial effect of the present invention is: the fault-tolerant electric clutch system of the present invention, can tolerate arbitrary failure restraint unit in arbitrary communication system, fault-tolerant unit and the random failure of the arbitrary motor in triplication redundancy boosting cylinder for clutch push rod actuate actuators, improve the safe operation ability of electric clutch system survivability and automobile, promoted the development of automotive electronic technology.
Accompanying drawing explanation
Fig. 1 is the fault-tolerant electric clutch systematic schematic diagram of the present invention;
Fig. 2 is the fault-tolerant electric clutch working-flow of the present invention figure;
Fig. 3 is the FlexRay communication scheme of pedal position message in the fault-tolerant electric clutch system of the present invention.
The specific embodiment
Fault-tolerant clutch system schematic diagram as shown in Figure 1, this system is between vehicle electronics pedal of clutch 1 and boosting cylinder for clutch push rod 6, and system comprises triplication redundancy boosting cylinder for clutch push rod actr, the boosting cylinder for clutch push rod 6 that clutch pedal position sensor 2, fault-tolerant unit F TU, two passage FlexRay buses 7, CD-ROM drive motor 5 and mechanical control bar 8 form.Wherein fault-tolerant unit F TU comprises FTU
1pedal position sensor detecting signal unit 3 and FTU
2the fault-tolerant unit 4 of power-transfer clutch, pedal position sensor 2 is directly connected with pedal of clutch 1, and the output of pedal position sensor 2 enters FTU simultaneously
13 of pedal position sensor detecting signal unit 3 are copied determinant fault and suppress unit F CU
1, FCU
2and FCU
3, correct FCU will produce identical pedal position message.FCU
1, FCU
2and FCU
3two passages of A, B by FlexRay bus 7, are sent to FTU by message
2the fault-tolerant unit 4 of clutch.FTU
2the fault-tolerant unit 4 of clutch comprises 3 failure restraint unit F CU
4, FCU
5and FCU
6, but these failure restraint unit F CU and detecting unit FTU
1in the determinant fault that copies to suppress unit F CU different, they all comprise a voting machine, after receiving message, they are the independent result of calculation of three FCU first relatively, then select the result of calculation of most of FCU, the result of calculation of two gained in three FCU can detect and find error message, and shield this mistake within a step.Two passage A, B of FlexRay bus 7 are configured to the separate certainty passage that copies, communication system is known the legal time benchmark of each FCU in advance, if a FCU has run counter to time rule, communication system is by all messages of abandoning receiving from this FCU, to prevent that overload situations from occurring so.Do not having in situation in bad order, each FCU that sends message by two independently communication system respectively send 1 message, therefore, each FCU that receives message will receive from FCU
1, FCU
2and FCU
36 messages.By the interconnective failure restraint of FlexRay bus 7 unit, can tolerate certain inefficacy of any one communication system.Triplication redundancy (TMR) boosting cylinder for clutch push rod actuate actuators comprises three motors separately, each motor respectively with FTU
2one of three FCU outputs of the fault-tolerant unit 4 of clutch are connected, the strength sum of any two motors surpasses the 3rd motor, i.e. majority output in three FCU outputs has determined the position of joystick point of action, has removed inconsistent output, and TMR can be counted as mechanical voting machine.FTU
2three FCU of the fault-tolerant unit 4 of clutch are used identical algorithm, and these algorithms are according to the position calculation of electric clutch pedal and control the stroke of electric clutch servo cylinder push rod, and then realize the Engage and disengage of power-transfer clutch.
Workflow diagram of the present invention is as Fig. 2, and concrete steps are as follows: described pedal position sensor 2 detects the position signal of electric clutch pedal 1, and position signal enters FTU
13 of pedal position sensor detecting signal unit 3 are copied determinant fault inhibition unit F CU, because these three FCU are deterministic, at FTU
1in the available message that three FCU of pedal position detection detecting unit 3 produce, if the message of two FCU has identical bit pattern, choose so the output as triple in these two messages.Can within a step, detect and find error message, and shield this mistake, correct FCU will produce identical pedal position message and send in FlexRay bus 7, two passage A, B of FlexRay bus 7 are configured to the separate certainty passage that copies, and this contributes to tolerate certain inefficacy in arbitrary communication system.All communication systems are the same with FCU, Internet access Global time bases all, and communication system is understood the legal time behavior of FCU.If a FCU has run counter to the time standard of self, communication system is by all messages of abandoning receiving from this FCU, to prevent that overload situations from occurring so.Do not having in situation in bad order, each send FCU by two independently communication system respectively send 1 message, therefore, each receives FCU will receive 6 messages that send FCU from 3.
Described FTU
2failure restraint unit F CU in the fault-tolerant unit 4 of power-transfer clutch
4, FCU
5, FCU
6, each self-contained voting machine, by FlexRay bus 7, receive FTU
1the signal that pedal position sensor detecting signal unit 3 produces, after receiving message, they are three independent result of calculations of these three FCU first relatively, then select the result of calculation of most of FCU, the result of calculation of two gained in three FCU, makes accurate voting and then obtains correct pedal position information.FTU
2fCU in the fault-tolerant unit 4 of throttle has identical algorithm, and these algorithms are according to the positional information calculation of pedal of clutch 1 and control the folding degree of electronic throttle, so reach control hold object.Message dropping or arbitrary motor of arbitrary node random failure, arbitrary passage are malfunctioning, do not affect the normal operation of system.
Fig. 3 is the FlexRay communication scheme of pedal position message of the present invention, on software, first adopts twin-channel FlexRay communication network, itself has twin-channel communication structure, in static time slot 1, and FTU
1on passage A and B, send FCU respectively
1, in static time slot 2, FTU
1on passage A and B, send FCU respectively
2; In static time slot 3, FTU
1on passage A and B, send FCU respectively
3.Meanwhile, in order to guarantee the real-time of sensor message, must utilize the static time slot of FlexRay to transmit, this also just means that the same time can only have a node to transmit at this time slot.During normal operation, only by the data of one of them passage, communicate, when a passage generation garble, under the consistent prerequisite of the communication carried out at two passages, system still can rely on the work of another one passage, in dynamic segment, dynamically based on miniature time slot mode, be used for arbitrating the priority of dynamic segment transmission.SW is one section of call duration time section, during this period of time can transmit a symbol, and its radical function is to check bus monitoring operation.NIT is one section of bus communication floor time, and after this communication cycle is finishing.
Claims (4)
1. a fault-tolerant electric clutch system, system is between vehicle electronics pedal of clutch and boosting cylinder for clutch push rod, it is characterized in that, comprise electric clutch pedal position sensor, fault-tolerant unit, two passage FlexRay buses, the triplication redundancy boosting cylinder for clutch push rod actr that CD-ROM drive motor and mechanical control bar form, wherein fault-tolerant unit F TU comprises pedal position sensor detecting signal unit and the fault-tolerant unit of power-transfer clutch, electronic pedal position transduser is directly connected with electric clutch pedal, the position signal output of electronic pedal position transduser enters 3 of pedal position sensor detecting signal unit and copies determinant fault and suppress unit, correct failure restraint unit will produce identical pedal position message, 3 are copied determinant fault and suppress unit by two passages of FlexRay bus, message is sent to the fault-tolerant unit of power-transfer clutch, the fault-tolerant unit of power-transfer clutch comprises 3 failure restraint unit, each failure restraint unit comprises an independently voting machine, in the voting machine of three identical algorithms, most result of calculation is sent triplication redundancy boosting cylinder for clutch push rod actr, the stroke of triplication redundancy boosting cylinder for clutch push rod actr control clutch servo cylinder push rod.
2. fault-tolerant electric clutch system according to claim 1, it is characterized in that, described two passage FlexRay buses are the separate certainty passage that copies, and 3 are copied determinant fault and suppress each message that unit sends and send respectively two identical messages by two passage FlexRay buses.
3. fault-tolerant electric clutch system according to claim 2, it is characterized in that, described 3 are copied determinant fault and suppress in available message that unit produces, if two messages that copy determinant fault inhibition unit have identical bit pattern, choose the common output as pedal position sensor detecting signal unit triple in these two messages.
4. fault-tolerant electric clutch system according to claim 1, it is characterized in that, described triplication redundancy boosting cylinder for clutch push rod actuate actuators comprises three motors, each motor is connected with one of three failure restraint unit output of the fault-tolerant unit of power-transfer clutch respectively, and the strength sum of any two motors surpasses the 3rd motor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310626830.0A CN103612562A (en) | 2013-12-02 | 2013-12-02 | Fault-tolerant electronic clutch system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310626830.0A CN103612562A (en) | 2013-12-02 | 2013-12-02 | Fault-tolerant electronic clutch system |
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| CN103612562A true CN103612562A (en) | 2014-03-05 |
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| CN201310626830.0A Pending CN103612562A (en) | 2013-12-02 | 2013-12-02 | Fault-tolerant electronic clutch system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108572638A (en) * | 2017-03-10 | 2018-09-25 | 雅特生嵌入式计算有限公司 | The stopping of FPGA non-matched data packets for security system |
| WO2020200599A1 (en) * | 2019-04-01 | 2020-10-08 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Method and device for controlling at least one actuator of an actuator system |
| CN112590689A (en) * | 2021-01-05 | 2021-04-02 | 潍柴动力股份有限公司 | Fault diagnosis method, device and equipment for electrically controlled clutch of vehicle |
Citations (5)
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| CN1204595A (en) * | 1997-06-09 | 1999-01-13 | 易通公司 | Clutch misadjustment determination |
| GB2339869A (en) * | 1998-07-20 | 2000-02-09 | Motorola Ltd | A fault tolerant electronic braking system |
| US20060253726A1 (en) * | 2005-05-06 | 2006-11-09 | Vikas Kukshya | Fault-tolerant architecture for a distributed control system |
| CN102692918A (en) * | 2012-06-26 | 2012-09-26 | 上海理工大学 | Method for designing fault-tolerance real-time steering control system |
| CN103332185A (en) * | 2013-07-11 | 2013-10-02 | 上海理工大学 | Safety car line control brake system and control method thereof |
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2013
- 2013-12-02 CN CN201310626830.0A patent/CN103612562A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1204595A (en) * | 1997-06-09 | 1999-01-13 | 易通公司 | Clutch misadjustment determination |
| GB2339869A (en) * | 1998-07-20 | 2000-02-09 | Motorola Ltd | A fault tolerant electronic braking system |
| US20060253726A1 (en) * | 2005-05-06 | 2006-11-09 | Vikas Kukshya | Fault-tolerant architecture for a distributed control system |
| CN102692918A (en) * | 2012-06-26 | 2012-09-26 | 上海理工大学 | Method for designing fault-tolerance real-time steering control system |
| CN103332185A (en) * | 2013-07-11 | 2013-10-02 | 上海理工大学 | Safety car line control brake system and control method thereof |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108572638A (en) * | 2017-03-10 | 2018-09-25 | 雅特生嵌入式计算有限公司 | The stopping of FPGA non-matched data packets for security system |
| CN108572638B (en) * | 2017-03-10 | 2022-02-01 | 雅特生嵌入式计算有限公司 | Stopping of FPGA mismatched data packets for a security system |
| WO2020200599A1 (en) * | 2019-04-01 | 2020-10-08 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Method and device for controlling at least one actuator of an actuator system |
| CN113905939A (en) * | 2019-04-01 | 2022-01-07 | 克诺尔商用车制动***有限公司 | Method and device for controlling at least one actuator of an actuator system |
| US11787427B2 (en) | 2019-04-01 | 2023-10-17 | Knorr-Bremse Systeme Fuer Nutzfahrzeuge Gmbh | Method and device for controlling at least one actuator of an actuator system |
| CN113905939B (en) * | 2019-04-01 | 2024-02-23 | 克诺尔商用车制动***有限公司 | Method and device for actuating at least one actuator of an actuator system |
| CN112590689A (en) * | 2021-01-05 | 2021-04-02 | 潍柴动力股份有限公司 | Fault diagnosis method, device and equipment for electrically controlled clutch of vehicle |
| CN112590689B (en) * | 2021-01-05 | 2022-04-05 | 潍柴动力股份有限公司 | Fault diagnosis method, device and equipment for electrically controlled clutch of vehicle |
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Application publication date: 20140305 |