WO2010015765A2 - Procede et systeme de diagnostic de l'etat de fonctionnement d'un systeme de demarrage assiste d'un vehicule automobile - Google Patents
Procede et systeme de diagnostic de l'etat de fonctionnement d'un systeme de demarrage assiste d'un vehicule automobile Download PDFInfo
- Publication number
- WO2010015765A2 WO2010015765A2 PCT/FR2009/051440 FR2009051440W WO2010015765A2 WO 2010015765 A2 WO2010015765 A2 WO 2010015765A2 FR 2009051440 W FR2009051440 W FR 2009051440W WO 2010015765 A2 WO2010015765 A2 WO 2010015765A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- information
- diagnostic
- validity
- vehicle
- module
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/18—Safety devices; Monitoring
- B60T17/22—Devices for monitoring or checking brake systems; Signal devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T7/00—Brake-action initiating means
- B60T7/12—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger
- B60T7/122—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger for locking of reverse movement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T2201/00—Particular use of vehicle brake systems; Special systems using also the brakes; Special software modules within the brake system controller
- B60T2201/06—Hill holder; Start aid systems on inclined road
Definitions
- the invention relates to a method and a system for diagnosing the operating state of an assisted starting system of a motor vehicle.
- the invention relates to a motor vehicle equipped with a controlled parking brake.
- assisted start system which consists in controlling, automatically, the release of the parking brake when starting the vehicle.
- the parking brake is an additional braking system, in relation to the brakes actuated by the brake pedal, intended to immobilize the vehicle when the latter is at a standstill.
- the automatic release control of the parking brake helps the driver to perform a hill start, also known as hill start.
- the principle of starting on a slope is to release the brakes on the non - driving wheels as soon as the torque transmitted by the engine to the driving wheels is sufficient to compensate for the effect of the slope.
- British Patent Application GB 2 342 967 discloses a parking brake control device in which said brake is released when the brake torque applied to the wheels is below a certain threshold.
- French patent application FR 2,828,450 filed in the name of the applicant which describes a hill start assistance device
- French patent application FR 2,841,199 also filed in the name of the applicant. which discloses a device for automatically releasing the parking brake when the vehicle is started. But these documents do not disclose a means of diagnosing the operating state of an assisted starting system.
- Another object of the invention is to be able to diagnose a posteriori the operating state of the assisted start system to demonstrate a good or bad operation of such a system.
- the subject of the invention is therefore a method for diagnosing the operating state of an assisted starting system of a motor vehicle equipped with a controlled parking brake, comprising a step of calculating at least one information item of the vehicle and a validity step in which at least one validity information associated with said vehicle information is generated.
- This method comprises a step of recording in a non-volatile memory vehicle information and validity information associated with a parking brake release command and a diagnostic step in which at least one diagnostic information is developed at from a verification of the validity of the recorded information.
- a check of the validity of the information may be, for example, a comparison of a vehicle information with its associated validity information. Thanks to a posteriori verification of the validity of the previously recorded information, it is possible to diagnose if an unwanted start has occurred as a result of a validity error, but also if this unwanted start has occurred as a result of an error in the calculation of vehicle information.
- an analysis step is carried out in which at least one new validity information is calculated from at least one recorded information and is performed.
- the diagnostic step in which at least one diagnostic information is developed from a comparison of the new validity information with at least one recorded information.
- the method comprises a step of measuring at least one other information of the vehicle and, during the analysis step, at least one new validity information is calculated from at least one current information.
- the assisted starting system is equipped with a sensor for measuring information
- a method makes it possible to detect a possible sensor failure.
- This method is particularly suitable for checking whether a fault has occurred during a release command of the parking brake. In addition, this method detects whether this undetected failure has disappeared after the loosening command.
- the assisted start system is commanded to carry out a new assisted start to obtain at least one additional validity information, and during the analysis step at least one new validity information is computed from the Additional Information .
- an additional assisted start command can be performed to generate new information for comparison with the previously recorded information.
- the recording step is carried out using a device embedded in the motor vehicle, and the analysis and diagnosis steps are then carried out using a device. located outside of said vehicle.
- a diagnosis can be established, for example, during a general check of the state of the vehicle carried out by a specialized garage.
- the specialized garage can be equipped with a suitable device that can diagnose a posteriori, following a complaint from a customer about an untimely start, the operating state of the assisted start system.
- the analysis step is carried out with different calculation conditions. It is thus possible to modify the starting conditions of the vehicle to reveal a validity error, a calculation error or a measurement error of the assisted starting system which would not have been detected during the release of the brake command.
- the subject of the invention is a system for diagnosing the operating state of an assisted starting system of a motor vehicle equipped with a controlled parking brake, the assisted starting system comprising at least calculating means for calculating vehicle information for an assisted start computer which is able to control the release of the parking brake and to generate at least one validity information associated with said vehicle information.
- This system includes a backup module for storing the vehicle information and the associated validity information in a non-volatile memory during a release command of the parking brake, and a diagnostic module adapted to receive the recorded information comprising a verification module adapted to develop at least one diagnostic information from a verification of the validity of the recorded information.
- said diagnostic module includes an analysis module for calculating at least one new validity information, based on at least one recorded information, which is intended for the verification module, which can also be used to generate at least one piece of information. diagnostic information from a comparison of the new validity information with at least one recorded information.
- the assisted starting system comprises at least one sensor for measuring at least one other information of the vehicle intended for the assisted start computer and in which the diagnostic module is also able to receive the current information of the vehicle. and the associated validity routine information and the analysis module is adapted to compute at least one new validity information from at least one current information.
- the assisted start computer is able to generate at least one additional validity information during an additional release control of the parking brake and the analysis module is able to develop new validity information from additional validity information.
- the backup module is embedded in the motor vehicle and the diagnostic module is located outside said vehicle.
- the analysis module is capable of calculating the new validity information with different calculation conditions.
- FIG. 1 is a diagrammatic view of a diagnostic system according to the invention
- Figure 2 is a schematic view of an embodiment of a diagnostic module
- FIG. 3 presents a flowchart illustrating the main phases of a diagnostic method according to the invention
- Figures 4 to 8 show flowcharts illustrating exemplary embodiments of the diagnostic step.
- Figure 1 there is shown a schematic view of a system 1 for diagnosing the operating status of a system 2 assisted start of a motor vehicle.
- the assisted start system 2 (or SDA) comprises an assisted start computer 3, a plurality of sensors 4 to 8, an electrically controlled parking brake 9, means 10 and
- the assisted start system 2 is embedded in the motor vehicle.
- the assisted start computer 3 hosts an algorithm for managing a command to release or tighten the parking brake 9.
- the assisted start computer 3 issues the loosening / clamping command, transmitted via a connection 13, towards the parking brake 9.
- the assisted start computer 3 receives information from the vehicle from the sensors 4 to 8.
- the slope sensor 4 transmits a slope measurement of the slope via a connection 14 towards the assisted start computer 3.
- the accelerator pedal position sensor 5 transmits a PosPedAcc measurement of the position of the accelerator pedal via a connection 15 to the assisted start computer 3.
- the sensor 6 of the engine speed emits a measurement Nmot of the engine speed by a connection 16 towards the computer 3 assisted start.
- the gear lever position sensor 7 transmits a PosBV measurement of the position of the transmission lever by a connection 17 towards the assisted start computer 3.
- the clutch pedal position sensor 8 transmits a PosPedEmb measurement of the position of the clutch pedal via a connection 18 towards the assisted start computer 3.
- the assisted start computer 3 also receives vehicle information from calculation means 10 and 1 1 transmitted respectively by connections 19 and 20.
- the means 10 and 1 1 of calculation can develop or estimate vehicle information from, in particular, calculation algorithms. These means 10 and 1 1 of calculation are preferably integrated within the assisted start system, but they can also belong to other vehicle embedded systems, such as the anti-skid system of the wheels of the vehicle.
- the assisted starting system comprises two estimation modules A1 and A2 for estimating the torque Croues transmitted to the wheels of the vehicle.
- the first estimate module A 1 estimates the torque Croues transmitted to the wheels from a method described in the application of patent FR 2 841 199 cited above.
- the assisted starting system may also comprise a second estimating module A2 for estimating the torque Croues transmitted to the wheels from a method described in the patent application FR 2,828,450 cited above. This second module A2 can be added to or replace the first module A l estimation.
- the use of the two modules in parallel makes it possible to obtain two estimates of the torque transmitted to the wheels from different processes, thus offering a redundancy of the estimation of the torque transmitted to the wheels in order to make the assisted starting system more reliable.
- the first module A l 'estimation based on the process of the patent application FR 2 841 199, provides an estimate of the torque Croues transmitted to the wheels from the time derivative of the engine speed, the engine torque and the inertia of the engine.
- the second estimation module A2 based on the method of the patent application FR 2 828 450, provides an estimation of the torque Croues transmitted to the wheels from a measurement of the position of the clutch pedal, performed thanks to a sensor, and a clutch curve.
- Other means can also be envisaged to produce the information of the torque transmitted to the wheels, for example by using a wheel torque sensor or any other algorithm for calculating the torque Croues.
- the assisted start computer 3 is able to generate at least one validity information associated with each of the vehicle information received from a sensor or a calculation means. This validity information is used by the assisted start computer 3 to test the start conditions before issuing a release or tightening command of the parking brake 9. If the validity information test is valid, a release command is issued to release the parking brake 9.
- the SDA input / output module 12 is connected to the start computer 3 assisted by a connection 21 to receive the vehicle information measured by the sensors 4 to 8 and developed by the estimation modules A 1 and A2, as well as the validity information generated by the assisted start computer 3.
- the input / output module 12 of the SDA transmits said vehicle information and validity to the diagnostic system 1.
- the SDA input / output module 12 also receives the parking brake release / clamping command via the connection 21 and can transmit it to the diagnostic system 1.
- the diagnostic system 1 comprises a backup module 22 and a diagnostic module 23.
- the backup module 22 is embedded in the vehicle, it can be embedded in the assisted start system 2, and the diagnostic module 23 is located outside the vehicle .
- the diagnostic module 23 can be embedded in a computer within a laptop.
- the backup module 22 and the diagnostic module 23 are embedded in the vehicle.
- the diagnostic module 23 can be embedded in the assisted start system 2.
- the backup module 22 is connected to the SDA input / output module 12 via a connection 24.
- the backup module 22 receives, via the connection 24, the release / tightening command of the parking brake 9, the vehicle information from the sensors 4 to 8 and the estimation modules A 1 and A2, as well as the information validity generated by the computer 3 assisted start.
- the backup module 22 can also transmit, via the connection 24, all its recorded information to the SDA input / output module 12.
- the diagnostic module 23 is connected to the module
- the information and the release / tightening command received by the diagnostic module 23 may come from either the computer 3 assisted start, noting current information, or the module 22 backup, noted information recorded.
- FIG. 2 shows a schematic view of an embodiment of a diagnostic module 23.
- the diagnostic module 23 comprises, a module 26 of inputs / outputs of the diagnostic module, an analysis module 27, a module 28 for generating the reference variables and a verification module 29.
- the diagnostics module input / output module 26 is connected to the SDA input / output module 12 via connection 25 to receive current information from the assisted start computer 3, as well as the recorded information from the computer. backup module 22.
- the module 26 of the inputs / outputs of the diagnostic module can also transmit, via the connection 25, a start command to the assisted start computer 3 so that it can generate an additional command for loosening / clamping the parking brake 9. .
- This start command from the diagnostic module 23 makes it possible to perform an additional assisted start in start conditions different from those which generated the recorded information.
- An additional assisted start generates additional routine information that can be compared to the recorded information for a posteriori diagnosis.
- the analysis module 27 is connected to the module 26 of inputs / outputs of the diagnostic module to receive the current information from the computer 3 assisted start, transmitted by a connection 30, and the recorded information from the module 22 backup, transmitted by a connection 31. This analysis module 27 transmits, by a connection 32, computed information towards the verification module 29. The analysis module 27 is also able to directly transmit the current information, from the assisted start computer 3, to the verification module 29. We hear by direct transmission of information, information that is not recalculated by the analysis module 27.
- the module 28 is able to generate reference variables to transmit them, via a connection 33, to the verification module 29.
- the verification module 29 also receives, via the connection 31, the recorded information from the input / output module 26 of the diagnostic module.
- the verification module 29 elaborates a plurality of diagnostic information, denoted VD1, VD2... VDi..., VDN, and transmits them via connections 35 to the diagnostics module's input / output module 26.
- the diagnostic information can be transmitted to a laptop screen, or to a text computer file.
- the diagnostic module When the diagnostic module is embedded in the vehicle, it can be expected to generate a visual, audible or tactile alarm to warn the driver.
- FIG. 3 shows a flowchart illustrating the main phases of a method for diagnosing the operating state of an assisted start-up system 2 previously described.
- the method begins with steps 100 and 101 in which respectively a calculation of a vehicle information from a calculation means and a measurement of a vehicle information from a sensor. Then a next step 102 is performed in which validity information associated with each of the vehicle information is generated. When the starting conditions are met, a step 103 is performed in which a release command of the parking brake is sent. Then, a step 104 is performed to record the vehicle information and related information that is useful for diagnosing the operation of the assisted start system 2. Then a step 105 of checking the validity of the recorded information is carried out and a diagnostic step 106 is carried out wherein a diagnostic information is developed for each verification step 105.
- the verification step 105 may comprise several optional steps 107 to 109 depending on the recorded information. During the verification step 105 it is possible, for example, to compare the information recorded between them, and then perform the diagnostic step 106. Step 109 may also be performed to compute new validity information from the stored information and compare this new information with the previous recorded information. It is also possible to perform step 107 in which the starting conditions are modified, for example, by placing the vehicle on a different slope of inclination, or by placing the gear lever in the "neutral" position. After this modification step 107, step 108 is performed in which an additional release command of the parking brake is sent. Step 108 makes it possible to generate new information, made under different conditions, and then compares this new information with the previous information recorded.
- the general principle of the diagnostic method is to test, via the assisted start computer 3, the validity of the received vehicle information before issuing a loosening / clamping command towards the parking brake 9.
- the associated vehicle and validity information is stored via the backup module 22 in a non-volatile memory of EEPROM type or "Electrically Erasable Programmable Read OnYy Memory” in the English language. or "Electrically and Programmable Erasable Dead Memory”. Then, when an unwanted start occurs, the recorded data is analyzed to diagnose the state of operation of the assisted start system 2.
- the main sources of vehicle information development are measurement sensors, torque estimation modules transmitted to the wheels and the assisted start computer.
- Type I inadvertent start following a failure of an undetected sensor. For example, when the vehicle is stationary, the shift lever is in the "Neutral” position and the parking brake is applied. Under these conditions, if the transmission switch is locked to a "gear engaged" position just prior to starting, a simple depressing of the accelerator pedal may result in a release command of the parking brake. This failure is normally detected, a posteriori, in vehicle running condition when the contactors of the neutral point and engaged speed provide contradictory messages
- Type II untimely start due to an overestimation of the torque transmitted to the wheels.
- the release command is issued too early, when the actual torque transmitted to the wheels is less than the torque due to the slope, resulting in an unexpected retreat of the vehicle
- Type III untimely start following a failure of the assisted start computer. Not all the conditions for performing an assisted start are correctly validated by the computer.
- the backup module 22 is also able to record the vehicle information according to the estimation module used. Indeed, the information of the vehicle is different according to the estimation module used.
- PenteDA slope or inclination of the road on which the vehicle is moving in relation to the horizontal
- PosPedAcc PosBV throttle pedal position: Transmission lever position Nmot: Engine RPM.
- ValPosPedAcc Boolean signal of validity of the information PosPedAcc, which is worth: - 0 if the information PosPedAcc is invalid
- ThresholdPosPedAcc accelerator pedal position threshold developed by the assisted start computer 3 -
- ValPosBV Boolean signal of validity of the information
- ValNmot Boolean signal of validity of information Nmot, which is worth:
- ThresholdNmot engine speed threshold developed by the computer assisted starting 3 according to the slope.
- the torque transmitted to the wheels is estimated from a clutch curve which connects the position of the clutch pedal and the maximum torque transmittable by the clutch to this position. .
- To calculate a posteriori torque transmitted to the wheels it is necessary to record the clutch curve during assisted start.
- PosPedEmb position of the clutch pedal.
- Information generated by the assisted start computer ValPosPedEmb: boolean signal of validity of the information PosPedEmb, which is worth: - 0 if the information PosPedEmb is invalid
- the first estimation module A Croues: estimation of the torque transmitted to the CourbeEmb wheels: clutch curve developed by the first estimation module A l.
- the torque transmitted to the wheels is estimated from the time derivative of the engine speed and the engine torque. To calculate a posteriori the torque transmitted to the wheels, it is therefore necessary to record a history of the engine speed during the assisted start.
- Nmot (l ... n) history of n engine speed samples during assisted start. The recording of n samples allows the calculation of the time drift of the engine speed.
- the value Nmot (l) corresponds to the value of the engine speed measured during the release command of the parking brake 9 CME: engine torque.
- Information generated by the assisted start computer - Wheel Threshold: threshold of the torque to be transmitted to the wheels produced by the computer assisted starting 3 according to the slope.
- Figures 4 to 8 show flowcharts illustrating examples of implementation of the diagnostic step.
- the diagnostic step includes performing a check for registered information and developing associated VDi diagnostic information.
- Associated VDi information may be encoded as follows:
- VDi diagnostic information associated with a verification that is worth:
- the verifications are carried out by the verification module 27.
- the assisted start computer 3 may receive a plurality of information, the information verification module 27 may include several different types of checks.
- FIG. 4 shows a first type of verification in which registered validity information is compared with the corresponding current validity information directly from the analysis module.
- This first type of verification can be used to check different vehicle information measured by a sensor.
- the PenteDA information is verified and diagnostic VDl information is developed according to the result of the verification.
- the valid ValPenteDA validity information shall be considered reliable.
- the registered value ValPenteDA is then compared with the current value ValPenteDA_MA from the analysis module 27.
- step 200 it is checked whether the information ValPenteDA is valid. If the information ValPenteDA is invalid the information VDl is 3, otherwise a next step 201 is carried out. During step 201, it is checked whether the information ValPenteDA_MA is valid. If the information ValPenteDA_MA is invalid, then the information VDl is 1, otherwise the information VDl is worth 0.
- FIG. 5 shows a second type of verification in which, in a first step, a measured measured information is compared with a first piece of information. recorded validity, then comparing a second saved validity information with the corresponding current validity information from the analysis module 27.
- This second type of verification can be used to check, on the one hand, different vehicle information measured by a sensor and on the other hand the associated validity information.
- An example of application of this second type of verification applied to the PosPedAcc information is described in Figure 5.
- the information PosPedAcc is verified and a diagnostic information VD2 is developed according to the result of the verification.
- the position of the PosPedAcc accelerator pedal shall be greater than a ThresholdPosPedAcc threshold and the recorded ValPosPedAcc validity information shall be considered reliable.
- the value ValPosPedAcc recorded is compared with the current value ValPosPedAcc_MA from the analysis module 27.
- a step 202 the information PosPedAcc is compared with the ThresholdPosPedAcc threshold. If the information PosPedAcc is less than or equal to the ThresholdPosPedAcc threshold, then the information VD2 is 3, otherwise a next step 203 is performed.
- step 203 it is checked whether the information ValPosPedAcc is valid. If the information ValPosPedAcc is invalid, then the information VD2 is 3, otherwise a next step 204 is carried out.
- step 204 it is checked whether the information ValPosPedAcc_MA is valid. If the information ValPosPedAcc_MA is invalid, then the information VD2 is 1, otherwise the information VD2 is 0.
- a failure of another sensor 4 to 8 can be detected in a manner similar to this second type of verification.
- the assisted start system 2 uses a different set of information for each sensor. This information has a different name but a role similar to the information described in the second type of verification. This The second type of verification described in Figure 5 can be applied for other sensors, adapting the information used.
- the PosBV information is compared with the Point_Mort threshold. If the PosBV information is different from the Point_Mort threshold, then the VD3 information is 3, otherwise a next step is taken. In the next step, it is checked whether the information ValPosBV is valid. If the information ValPosBV is invalid, then the information VD3 is 3, otherwise another next step is taken. In the next step, it is checked whether the information ValPosBV _MA is valid. If the information ValPosBV _MA is invalid, then the information VD3 is 1, otherwise the information VD3 is 0.
- Nmot must be greater than ThresholdNmot and the valid ValNmot validity information must be considered reliable. To detect a failure of the sensor 6 of the engine speed, we then compare the ValNmot value recorded with the current ValNmot_MA value from the analysis module 27.
- the Nmot information is compared with the ThresholdNmot threshold. If the information Nmot is less than or equal to the ThresholdNmot threshold, then the information VD4 is equal to 3, otherwise a next step is carried out.
- next step it is checked whether the ValNmot information is valid. If the information ValNmot is invalid, then the information VD4 is equal to 3, otherwise another next step is carried out. In the next step, it is verified whether the information ValNmot_MA is valid. If the information ValNmot_MA is invalid, then the information VD4 is
- the position sensor 8 of the clutch pedal When using the position sensor 8 of the clutch pedal it is possible to carry out a verification, similar to the second verification, of the information PosPedEmb and to elaborate diagnostic information VD5 according to the result of the verification.
- the position of the PosPedEmb clutch pedal shall be greater than a SeuilPosPedEmb threshold and the valid ValPosPedEmb validity information shall be considered reliable.
- the value ValPosPedEmb recorded is then compared with the current value ValPosPedEmb_MA from the analysis module 27.
- the information PosPedEmb is compared with the threshold SeuilPosPedEmb. If the information PosPedEmb is less than or equal to the ThresholdPosPedEmb threshold, then the information VD5 is equal to 3, otherwise a next step is carried out.
- FIG. 6 shows a third type of verification in which, during a first step, a new validity information is calculated from a stored information or current information, using the module 27. of analysis. In a second step, the difference is made between a registered validity information and said new validity information. Then we compare this difference with a reference threshold.
- the reference threshold is generated by the module 28 for generating the reference variables.
- This third type of verification can be used to check different validity information generated by the assisted start computer 3.
- the SeuilPosPedAcc information is checked and diagnostic VD6 information is developed according to the result of the verification.
- a verification step 205 is performed in which the following comparison is made:
- ThresholdPosPedAcc_MA value of the accelerator pedal position threshold calculated by the analysis module 27. This calculation is made using a map that gives the accelerator pedal threshold as a function of the recorded PenteDA slope and the Nmot registered engine speed.
- err_SeuilPosPedAcc the accepted difference generated by the module 28.
- the information VD6 is equal to 3, otherwise the information VD6 is equal to 0.
- the ThresholdSound threshold must be reliable. A verification step is performed in which the following comparison is made:
- Threshold_Magnets _MA P 'enteD 1 A: value of the threshold of the torque to be transmitted to the wheels calculated by the analysis module 27. This calculation is established by means of a cartography which gives the threshold of the torque to be transmitted to the wheels according to the slope PenteDA recorded err_SeuilCroues: the accepted difference generated by the module 28. If the verification is not valid, then the information VD7 is 3, otherwise the information VD7 is 0.
- Croues It is thus possible to verify the information Croues and develop diagnostic information VD8 according to the result of the verification.
- Croues_MA (CourbeEmb, PosPedEmbAnt): which corresponds to the torque to be transmitted to the wheels calculated by the analysis module 27. This calculation is carried out using a linear interpolation of the recorded clutch curve CourbeEmb which is evaluated at the anticipated position of the registered PosPedEmbAnt clutch pedal.
- Err_Croues the accepted deviation generated by the module 28. verification is not valid, then the information VD8 is 3, otherwise the information VD8 is 0.
- CurveEmb and develop a diagnostic VD9 information based on the result of the audit.
- CrouE_MA CrouE_MA (CourbeEmb, PosPedEmbAnt): the estimation of the torque transmitted to the wheels obtained thanks to the linear interpolation of the curve CourbeEmb of clutch recorded. This estimate is evaluated at the PosPedEmbAnt position of the registered clutch pedal CourbeEmb _MA: new clutch curve provided by the 28 - Noises_MA (CourbeEmb_MA, PosPedEmbAnt) module: the estimation of the torque transmitted to the wheels obtained thanks to the linear interpolation of the new CurveEmb_MA curve of clutch. This estimate is evaluated at the anticipated PosPedEmbAnt position of the registered clutch pedal - err_Couple: the accepted deviation generated by the module 28.
- the information VD9 is worth 2 to indicate an overestimation of the torque transmitted to the wheels because of a slow learning of the clutch curve, otherwise the information VD9 is 0.
- the figure 7 there is shown a fourth type of verification in which recorded information, computed by an estimation module, is compared with recorded validity information.
- This fourth type of verification can be used to verify different vehicle information calculated by means 10 and 1 1 of calculations. We describe in Figure 7 an example of application of this fourth type of verification applied to information Croues.
- the information Croues is verified and diagnostic information VD1 O is developed according to the result of the verification.
- the torque transmitted to the wheels must be greater than a ThresholdSound, that is to say, the registered Croues information must be considered reliable.
- step 206 it is checked whether the following condition is valid: Croues> SeuilCroues.
- FIG. 8 shows a fifth type of verification in which, during a first step, the difference between a registered vehicle information and a registered validity information. Then we compare this difference with a reference threshold.
- the reference threshold is generated by the module 28 for generating the reference variables.
- This fifth type of verification can be used to check various vehicle vehicle information measured by a sensor. An example of applying this fifth type of verification applied to the PosPedEmb information is described in Figure 8.
- the difference between the anticipated position of the PosPedEmbAnt clutch pedal and the actual position of the PosPedEmb clutch pedal must be strictly less than an err_PosPedEmb threshold.
- step 207 it is checked whether the following condition is valid:
- VDI information l is 3, otherwise the VDI information l is 0.
- this fifth type of verification can be applied, similar to the verification described in FIG. 8, to the information Croues when the second estimation module A2 is used. It is thus possible to verify the information Croues and to develop diagnostic information VD12 according to the result of the verification.
- the torque to the wheels Croues must correspond to the difference between the torque supplied by the engine CME and the time derivative of the engine speed dNmot / dt multiplied by the inertia of the engine Jm :
- the diagnostic system and method thus described are used mainly during a complaint by the driver of the vehicle which intervenes after one or more inadvertent starts.
- the diagnostic module is not embedded in the vehicle but it is located outside the vehicle.
- the diagnosis can be made in a suitable garage.
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Regulating Braking Force (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011521617A JP5634994B2 (ja) | 2008-08-04 | 2009-07-20 | 自動車のアシスト式発進システムの動作状態を診断する方法およびシステム |
US13/057,210 US8718867B2 (en) | 2008-08-04 | 2009-07-20 | Method and system for diagnosing the operating state of an assisted starting system of a motor vehicle |
EP09737084A EP2307249A2 (fr) | 2008-08-04 | 2009-07-20 | Procede et systeme de diagnostic de l'etat de fonctionnement d'un systeme de demarrage assiste d'un vehicule automobile |
CN200980139091.4A CN102171081B (zh) | 2008-08-04 | 2009-07-20 | 用于诊断机动车辆辅助起动系统的工作状态的方法和系统 |
RU2011108363/11A RU2527618C2 (ru) | 2008-08-04 | 2009-07-20 | Способ и система диагностики рабочего состояния системы помощи при трогании с места автотранспортного средства |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0855385A FR2934549B1 (fr) | 2008-08-04 | 2008-08-04 | Procede et systeme de diagnostic de l'etat de fonctionnement d'un systeme de demarrage assiste d'un vehicule automobile. |
FR0855385 | 2008-08-04 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2010015765A2 true WO2010015765A2 (fr) | 2010-02-11 |
WO2010015765A3 WO2010015765A3 (fr) | 2010-10-14 |
Family
ID=40749119
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2009/051440 WO2010015765A2 (fr) | 2008-08-04 | 2009-07-20 | Procede et systeme de diagnostic de l'etat de fonctionnement d'un systeme de demarrage assiste d'un vehicule automobile |
Country Status (8)
Country | Link |
---|---|
US (1) | US8718867B2 (fr) |
EP (1) | EP2307249A2 (fr) |
JP (1) | JP5634994B2 (fr) |
KR (1) | KR101591975B1 (fr) |
CN (1) | CN102171081B (fr) |
FR (1) | FR2934549B1 (fr) |
RU (1) | RU2527618C2 (fr) |
WO (1) | WO2010015765A2 (fr) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8494711B2 (en) * | 2010-01-04 | 2013-07-23 | GM Global Technology Operations LLC | Automated start-stop systems and methods for internal combustion engines |
DE102010002626A1 (de) | 2010-03-05 | 2011-09-08 | Continental Teves Ag & Co. Ohg | Betriebsverfahren für ein Kraftfahrzeug insbesondere umfassend ein elektronisch gesteuertes und/oder geregeltes Parkbremssystem |
US9056617B2 (en) * | 2011-12-02 | 2015-06-16 | Ford Global Technologies, Llc | Systems and methods for detecting accelerator pedal failure |
CN106153313B (zh) * | 2015-04-27 | 2018-04-13 | 北京福田康明斯发动机有限公司 | 一种发动机辅助制动系统的故障检测方法及检测装置 |
US9809210B2 (en) * | 2015-09-09 | 2017-11-07 | Cummins, Inc. | System and method for diagnosing failures in brake systems and discrete vehicle inputs |
US10497188B2 (en) * | 2017-09-18 | 2019-12-03 | Fca Us Llc | Clutch pedal position sensor diagnostic |
US11623619B2 (en) * | 2019-12-10 | 2023-04-11 | Bendix Commercial Vehicle Systems Llc | Parking brake apparatus and method therefor |
CN112124271B (zh) * | 2020-09-27 | 2022-08-23 | 东风柳州汽车有限公司 | 一种电子驻车制动释放控制方法 |
US20220297648A1 (en) * | 2021-03-19 | 2022-09-22 | GM Global Technology Operations LLC | System and method for assessing health of brake rotors |
KR20220166415A (ko) * | 2021-06-10 | 2022-12-19 | 현대자동차주식회사 | 전자식 주차 브레이크 시스템의 제어 방법 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040024513A1 (en) * | 2002-07-30 | 2004-02-05 | Hiroaki Aizawa | Automatic brake device for controlling movement of vehicle in direction opposite to intended direction of movement of driver |
FR2845958A1 (fr) * | 2002-10-16 | 2004-04-23 | Bosch Gmbh Robert | Procede et dispositif de surveillance de la fonction de deceleration d'une unite de commande d'un vehicule automobile |
DE102006026735A1 (de) * | 2006-06-08 | 2007-12-13 | Siemens Ag | Steuersystem zur Anpassung einer zur Steuerung einer Bremsenmechanikeinheit vorgesehenen Stellkraft |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SU1355522A1 (ru) * | 1986-03-03 | 1987-11-30 | О. X. Халидуллин | Система управлени сто ночным тормозом |
JPH07101323A (ja) * | 1993-10-04 | 1995-04-18 | Hino Motors Ltd | 坂道発進補助装置 |
JPH07101324A (ja) * | 1993-10-04 | 1995-04-18 | Hino Motors Ltd | 坂道発進補助装置 |
JP4613520B2 (ja) * | 2004-06-01 | 2011-01-19 | 株式会社アドヴィックス | 駐車補助制御装置、駐車補助制御システムおよび駐車補助プログラム |
DE102005032152A1 (de) * | 2004-09-01 | 2006-03-16 | Schmidt, Karsten | Verfahren zum Betrieb einer Bremsanlage für Kraftfahrzeuge |
-
2008
- 2008-08-04 FR FR0855385A patent/FR2934549B1/fr active Active
-
2009
- 2009-07-20 RU RU2011108363/11A patent/RU2527618C2/ru not_active IP Right Cessation
- 2009-07-20 CN CN200980139091.4A patent/CN102171081B/zh not_active Expired - Fee Related
- 2009-07-20 EP EP09737084A patent/EP2307249A2/fr not_active Withdrawn
- 2009-07-20 WO PCT/FR2009/051440 patent/WO2010015765A2/fr active Application Filing
- 2009-07-20 KR KR1020117005116A patent/KR101591975B1/ko not_active IP Right Cessation
- 2009-07-20 JP JP2011521617A patent/JP5634994B2/ja not_active Expired - Fee Related
- 2009-07-20 US US13/057,210 patent/US8718867B2/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040024513A1 (en) * | 2002-07-30 | 2004-02-05 | Hiroaki Aizawa | Automatic brake device for controlling movement of vehicle in direction opposite to intended direction of movement of driver |
FR2845958A1 (fr) * | 2002-10-16 | 2004-04-23 | Bosch Gmbh Robert | Procede et dispositif de surveillance de la fonction de deceleration d'une unite de commande d'un vehicule automobile |
DE102006026735A1 (de) * | 2006-06-08 | 2007-12-13 | Siemens Ag | Steuersystem zur Anpassung einer zur Steuerung einer Bremsenmechanikeinheit vorgesehenen Stellkraft |
Also Published As
Publication number | Publication date |
---|---|
RU2527618C2 (ru) | 2014-09-10 |
CN102171081B (zh) | 2014-04-16 |
RU2011108363A (ru) | 2012-09-10 |
CN102171081A (zh) | 2011-08-31 |
FR2934549A1 (fr) | 2010-02-05 |
US8718867B2 (en) | 2014-05-06 |
US20110190979A1 (en) | 2011-08-04 |
KR20110042341A (ko) | 2011-04-26 |
WO2010015765A3 (fr) | 2010-10-14 |
JP2011529827A (ja) | 2011-12-15 |
FR2934549B1 (fr) | 2011-03-25 |
JP5634994B2 (ja) | 2014-12-03 |
KR101591975B1 (ko) | 2016-02-03 |
EP2307249A2 (fr) | 2011-04-13 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2010015765A2 (fr) | Procede et systeme de diagnostic de l'etat de fonctionnement d'un systeme de demarrage assiste d'un vehicule automobile | |
FR2956848A1 (fr) | Systeme d'assistance de conduite et procede d'assistance de conduite automatique | |
EP1934947B1 (fr) | Procede d'amelioration d'un diagnostic d'une eventuelle defaillance dans un vehicule | |
EP2219910B1 (fr) | Procede d'assistance aux manoeuvres en cote | |
FR2875447A1 (fr) | Dispositif et procede d'exploitation du signal d'un capteur representant la position de la pedale d'accelerateur d'un vehicule automobile | |
WO2014049264A1 (fr) | Procédé et dispositif de gestion d'arret et de redemarrage d'un moteur de vehicule automobile et véhicule automobile comprenant un tel dispositif | |
FR2958588A1 (fr) | Procede de commande du fonctionnement d'un moyen de couplage mecanique des premier et deuxieme essieux d'un vehicule automobile | |
WO2010026324A1 (fr) | Procede de securisation du fonctionnement d'un vehicule automobile pourvu d'une assistance au demarrage en cote et un tel vehicule automobile | |
FR2906515A1 (fr) | Procede et dispositif de gestion du freinage d'un vehicule automobile. | |
EP2594422B1 (fr) | Méthode de détection d'une pédale d'accélarateur bloquée | |
EP2268524B1 (fr) | Procede et systeme de diagnostic de l'etat de fonctionnement d'un mode de demarrage assiste d'un vehicule automobile | |
FR2927596A3 (fr) | Procede de commande d'un systeme de controle d'un groupe motopropulseur de vehicule et systeme de controle correspondant | |
WO2007045787A1 (fr) | Procede de validation de la mesure fournie par un accelerometre dans un vehicule automobile et application a l’estimation de la pente | |
FR3058695A1 (fr) | Dispositif de freinage d'un vehicule automobile pour la protection du frein de stationnement | |
EP2621779B1 (fr) | Procede de freinage automatique d'un vehicule automobile | |
EP2296950B1 (fr) | Procede et dispositif de diagnostic d'un systeme de controle d'un vehicule automobile | |
EP1660765A1 (fr) | PROCEDE DE DETECTION DE LA DEFAILLANCE D’UN SIGNAL REPRESENTATIF DE L’ENFONCEMENT D’UNE PEDALE D’ACCELERATION DE VEHICULE AUTOMOBILE | |
WO2023117857A1 (fr) | Dispositif et procédé d'évaluation d'un système d'aide à la conduite pour véhicule automobile, le système d'aide à la conduite mettant en œuvre un réseau neuronal artificiel | |
FR2825050A1 (fr) | Appareil de commande et procede pour commander un systeme de chaine motrice | |
WO2013175114A1 (fr) | Analyse du comportement d'un système de freinage de véhicule a pédale découplée | |
FR3112521A1 (fr) | Procédé de commande de freinage de secours | |
FR2958710A3 (fr) | Procede de determination du rapport de transmission engage dans un systeme de transmission d'un vehicule automobile | |
FR2977686A1 (fr) | Systeme et procede d'autodiagnostic interactif embarque, autonome d'un vehicule terrestre |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 200980139091.4 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 09737084 Country of ref document: EP Kind code of ref document: A2 |
|
REEP | Request for entry into the european phase |
Ref document number: 2009737084 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2009737084 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref document number: 2011521617 Country of ref document: JP Kind code of ref document: A |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
ENP | Entry into the national phase |
Ref document number: 20117005116 Country of ref document: KR Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2011108363 Country of ref document: RU |
|
WWE | Wipo information: entry into national phase |
Ref document number: 13057210 Country of ref document: US |