WO2009144421A1 - Procede et systeme de diagnostic de l'etat de fonctionnement d'un mode de demarrage assiste d'un vehicule automobile - Google Patents
Procede et systeme de diagnostic de l'etat de fonctionnement d'un mode de demarrage assiste d'un vehicule automobile Download PDFInfo
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- WO2009144421A1 WO2009144421A1 PCT/FR2009/050355 FR2009050355W WO2009144421A1 WO 2009144421 A1 WO2009144421 A1 WO 2009144421A1 FR 2009050355 W FR2009050355 W FR 2009050355W WO 2009144421 A1 WO2009144421 A1 WO 2009144421A1
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- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000001514 detection method Methods 0.000 claims abstract description 44
- 230000007257 malfunction Effects 0.000 claims abstract description 7
- 230000004913 activation Effects 0.000 claims description 10
- 238000002405 diagnostic procedure Methods 0.000 claims 3
- 230000005540 biological transmission Effects 0.000 abstract 2
- 238000012360 testing method Methods 0.000 description 20
- 230000011664 signaling Effects 0.000 description 12
- 230000008569 process Effects 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 238000003745 diagnosis Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
Classifications
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- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
- B60W30/18—Propelling the vehicle
- B60W30/18009—Propelling the vehicle related to particular drive situations
- B60W30/18027—Drive off, accelerating from standstill
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
- B60W50/02—Ensuring safety in case of control system failures, e.g. by diagnosing, circumventing or fixing failures
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/06—Combustion engines, Gas turbines
- B60W2510/0638—Engine speed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/10—Change speed gearings
- B60W2510/1005—Transmission ratio engaged
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2520/00—Input parameters relating to overall vehicle dynamics
- B60W2520/30—Wheel torque
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2540/00—Input parameters relating to occupants
- B60W2540/10—Accelerator pedal position
Definitions
- the invention relates to a method and a system for diagnosing the operating state of an assisted start mode of a motor vehicle.
- the parking brake is an additional braking system compared to brakes actuated by the brake pedal. This parking brake is generally used to immobilize the vehicle when it is stopped, and may also be used to perform emergency braking when the vehicle is in motion.
- Automatic parking brake management helps, among other things, to help the driver to perform a hill start, also called “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 which 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.
- these documents do not disclose a way to diagnose the conditions for refusing an assisted start.
- One of the aims of the invention is therefore to provide a system and a method for diagnosing the conditions of refusal of an assisted start by an automatic management mode.
- Another object of the invention is to trace the history of these conditions with optimized memory occupancy and the lowest possible.
- the object of the invention is therefore a system for diagnosing the operating state of an assisted start-up mode of a motor vehicle equipped with a drive motor and a gearbox, comprising means for determining engine rotational speed information, vehicle accelerator pedal position information, gear position information, and torque information transmitted to the wheels.
- This system comprises a detection means for producing a start-up malfunction signal assisted from said information received, a plurality of encoding means for generating a tracking signal for each received determined information, and a memory for storing said tracking signals.
- each coding means when the assisted start is in operation, each coding means is able to modify said tracking signal by giving it a value corresponding to distinct states of the determined information received.
- the memory occupancy is decreased because not all values of the selected information are recorded during the assisted start-up time, but only when detects an assisted start refusal, a single value dependent on the assisted start operating conditions.
- each coding means assigns a value to a tracking variable, this value corresponds to a particular state of the determined information. These distinct states therefore correspond to operating conditions of the assisted start.
- each coding means comprises a comparison module for producing a satisfactory condition signal from the comparison between the received determined information and a threshold.
- the detection means By providing a simple means of coding the information received by means of a comparison, it is possible to provide a means of small size adapted to the needs of space saving in motor vehicles, in addition it is possible to make the system of reliability reliable. coding by the use of a small number of calculation modules and which limits the breakdowns.
- the detection means generates an encoding activation signal and a signal validity signal for each received determined information, and the distinct states of each received information are determined from the satisfactory condition signal, said signal validity signal and said coding activation signal.
- a signal validity test is also added to make the entire system reliable. Also, using three signals: a validity signal, an assisted start enable signal and a satisfactory condition signal, separate states of operating condition can be created.
- the subject of the invention is a method for diagnosing the operating state of an assisted start-up mode of a motor vehicle, in which a rotational speed information of a vehicle engine is determined. , vehicle accelerator pedal position information, gearbox position information, and torque information transmitted to the wheels.
- an assisted start malfunction is detected from said received information, each determined information received is coded with the aid of a tracking signal, and said tracking signals are saved.
- each information received is coded by modifying said tracking signal by assigning it a value corresponding to states distinct from the determined information received.
- a satisfactory condition signal is produced from the comparison between the received determined information and a threshold before encoding each received information.
- an encoding activation signal and a signal validity signal are generated for each determined information received, and the distinct states of the signal are determined. each information received from the satisfactory condition signal, said validity signal and said code activation signal.
- FIG. 1 is a schematic view of a diagnostic system according to the invention
- FIG. 2 is a diagrammatic view of an embodiment of an assisted start rejection detection module
- FIGS. 3a, 3b, 3c and 3d show a flowchart illustrating the main phases of a method of detecting an assisted start refusal
- - Figure 4 is a schematic view of a general embodiment of a coding module of a diagnostic information
- Figure 5 is a schematic view of an embodiment of a coding module of the diagnostic information
- FIGS. 6a, 6b, 6c and 6d show a flowchart illustrating the main phases of a method of coding a diagnostic information.
- FIG 1 there is shown a schematic view of a diagnostic system of the operating state of a start mode assisted by a motor vehicle.
- the diagnostic system is essentially housed within an electronic control unit 2 (ECU).
- ECU electronice control unit 2
- the ECU 2 comprises an input module 3, an assisted start management module 4, a detection module 5, a coding module 6 and a backup module 7.
- the operating principle of the diagnostic system consists in detecting, via the detection module 5, an assisted start refusal, enabling coding of the useful information by means of the coding module 6 and storing said information. coded and some other system information through the backup module 7 to trace the history of the assisted start refusal conditions.
- the input module 3 makes it possible to transmit useful information concerning the state of the vehicle to the various modules 5, 6 and 7 of the ECU 2, such as, for example, the vehicle speed or the engine rotation speed. This information may be measurements made using sensors or estimates made by calculation modules of the ECU 2, not shown in the figure.
- the assisted start management module 4 houses an algorithm controlling a parking brake 1 by sending tightening or loosening commands, transmitted via the connection 8, towards the parking brake 1. This module 4 also sends signals to the detection module 5, transmitted via the connection 9, and to the coding module 6, transmitted via the connection
- the detection module 5 detects an assisted start refusal from information from the management module 4 and from information from the input module 3 and transmitted by the connection 1 1. This detection module 5 activates the input module. encoding the diagnostic information by sending signals, transmitted through the connection 12, to the coding module 6. The module 5 also makes it possible to activate the saving of the information by the sending of signals transmitted by the connection 13 to the backup module 7.
- the coding module 6 receives the information useful for the diagnosis to be coded from the input module 3 and transmitted by the connection 14. The results thus encoded are then transmitted by the connection 15, from the coding module 6 to the module 7. backup.
- the backup module 7 stores the information received from the detection module 5, the coding module 6 and from the input module 3 respectively transmitted by the connections 13, 15 and 16.
- This module 7 is capable of recording the information received from permanently in a non-volatile memory that can be, for example, EEPROM type or "Electrically Erasable Programmable Read OnYy Memory” in English, or "Electrically Erasable and Programmable Dead Memory".
- the connections 8 to 16 are able to pass several different signals from one module to the other of the ECU 2.
- FIG. 2 there is shown a schematic view of an embodiment of a module 5 for detecting an assisted start refusal.
- FIG. 2 also shows elements previously described in FIG.
- the module 5 comprises a detection management module 20 and a signal validity test module 21.
- the detection management module 20 makes it possible to implement a method of detecting an assisted start refusal which will be described later in FIGS. 3 a to 3 d.
- This module 20 receives input signals RDA Det Active and DA_Active, from the assisted start management module 4 and transmitted respectively by the connections 22 and 23.
- RDA DetActive Boolean signal which is: - 0 if the detection of an assisted start refusal is deactivated
- DA_Active Boolean signal that is: - 0 if assisted start is disabled
- the RDA DetActive signal is generally 1 to enable detection of a rejection when assisted start is enabled. But when the parking brake 1 is loosened or when the driver activates a command to perform an unattended manual start, the signal RDA _DetActif is then 0.
- the module 20 also receives input signals MotorState, Vvéh, RotationMoteur, AccPos, B V_Pos, CoupleRoues, Control_Control and MotorControlCommand issued from input module 3 and transmitted via connections 24 to 31 respectively.
- MotorState Engine state that is:
- Vvh Vehicle Speed Information - RotationEngine: Engine Speed Information
- the signal validity test module 21 makes it possible to test whether certain received signals are valid. In Figure 2, only certain signals are tested. The validity of all the input signals of the detection module 5 can advantageously be tested.
- the module 21 comprises test modules 32 to 37 for testing the validity of the signals received respectively by the connections 38 to 43. Test module 32 to 37 is able to generate a Boolean validity signal depending on the test result.
- the module 21 generates the following signals:
- Val_MakeEngine Boolean signal of validity of the signal .Moteur, which is worth:
- Val_ Vvéh Boolean signal of validity of the signal Vvéh, which is worth: - 0 if the signal Vvéh is invalid
- Val_MotorRotation Boolean signal of validity of the signal RotationMoteur, which is worth:
- Val_AccPos Boolean signal of validity of the signal AccPos, which is worth:
- DA_Actif 0 if Val_AccPos is 0;
- Val_B V_Pos Boolean signal of validity of signal B V_Pos, which is worth:
- CoupleRoues which is worth:
- Examples of validity tests of a signal that can be performed by test modules 32 to 37 can be described.
- the Motor Rotation signal is considered invalid (that is, the signal V al_MotorRotation is 0) if, for example, the value received by the module 34 is outside an acceptable range of variation, this range being between a minimum value and a maximum value.
- the signal Motor Rotation can also be considered invalid if it is not received via several frames transmitted from the input module 3 on the connection 40 for a certain time, for example for more than 1 second, or if the signal
- the module 20 also receives the validity signals mentioned above Val_StateEngine, Val_Vvéh, Val_RotationMoteur, Val_AccPos, Val_B V_Pos and Val TorretsRoues from the module 21 and transmitted by the connections 44 to 49 respectively.
- the module 20 From a method of detecting an assisted start refusal that can be implemented in the detection management module 20, the module 20 generates the following output signals: RDA Type: assisted start refusal type and which is worth :
- assisted starting refusal is of the second type "starting with a firm brake"
- Act_Codage Boolean signal which is: - 0 if the coding of the information is deactivated
- the signal RDA Det makes it possible to signal to the coding module 6 and to the backup module 7 that an assisted start refusal has been detected. It is considered that an assisted start refusal is a malfunction assisted start, the signal of a refusal is equivalent to a malfunction signal.
- the Act_Codage signal makes it possible to activate the coding of the diagnostic information, by activating the coding module 6.
- the RDA Type signal makes it possible to distinguish the type of start refusal attended. It will be noted that there are two types of rejected assisted start: a first type "engine stall”: which describes a situation where, during the assisted start, the engine stalls with the parking brake 1 tight, without activation of the command Cmde_Clear release of said brake 1, and with a willingness of the driver to start the vehicle; and a second type "start with a tight brake”: which describes a situation where, during the assisted start, the vehicle starts with the parking brake 1 tightened and without activation of the command Cmde_Clear release of said brake 1.
- the driver has the will to start the vehicle if at least two conditions are satisfied on the following three: the driver engages a gear ratio; the driver depresses the accelerator pedal beyond a certain threshold, noted AccPosMin, of accelerator pedal position; - the torque transmitted to the wheels is greater than a threshold, noted
- an assisted start rejection signal is activated via the detection module 5.
- the signals RDA Type and RDA Det are respectively transmitted by the connections 50 and 51 towards the module 7 backup.
- the signals RDA Det, Act_Codage, as well as the validity signals Val_RotationMoteur, Val_AccPos, Val_B V_Pos and Val CoupleRoues are respectively transmitted by the connections 52 to 57 in the direction of the coding module 6.
- FIGS. 3a, 3b, 3c and 3d show a flowchart illustrating the main phases of a method for detecting an assisted start refusal.
- the process starts with an initial step 100. This step is performed as soon as an assisted start is activated. After this initial step 100, a step is performed
- the initial step 100 is carried out again. Moreover, the validity of these three conditions can be tested at any time during the execution time of the process, and if one of these three conditions is not satisfied, it returns to the initial step 100.
- step 103 of comparison the validity of the following three conditions is tested:
- step 104 of comparison the validity of the two following conditions is tested:
- RDA DetActive is 1).
- step 105 of the start-up preparation comparison steps 106 and 107 are performed to test whether the conditions are satisfied to consider that an assisted start is in progress.
- RDA DetActive is equal to 0
- step 102 If at least one of these three conditions is satisfied, it returns to the waiting step 102, in the opposite case the next comparison step 107 is carried out. For example, if the engine is no longer in a self-running state or if the vehicle is accelerating so that the vehicle speed exceeds the speed limit threshold, it returns to step 102 waiting.
- the vehicle speed information is strictly less than the vehicle speed threshold Vvéh (VvéhMin)
- the engine is in the autonomous running state (MotorState is 2) during the stop time - the detection of an assisted start refusal is enabled
- condition 1 the driver depresses the accelerator pedal of the vehicle (AccPos> AccPosMin) and the accelerator pedal position information is valid (Val_AccPos is 1)
- condition 2 the driver enters a gear ratio (BV Pos is 1) and the information of a gear engaged is valid (Val_ BV Pos is 1)
- condition 3 the torque transmitted to the wheels is greater than a minimum threshold (CoupleRoues> CoupleRouesMin) and the information of the torque transmitted to the wheels is valid (Val CoupleRoues is worth 1)
- step 108 of assisted start in progress is carried out next, and is carried out again step 105 of preparation to start otherwise.
- step 108 the following signals are first modified so as to obtain:
- comparison steps 109, 1 10 and 1 12 are performed to detect whether an assisted start refusal is activated.
- step 109 of comparison the validity of the three following conditions is tested: - detection of an assisted start refusal is disabled (RDA DetActive is 0)
- a validity test is performed to detect whether a first-type assisted start refusal is activated by performing the validity tests of the following five conditions:
- the vehicle speed information is strictly lower than the vehicle speed threshold VvéhMin (Vvéh ⁇ VvéhMin), the engine is not in the autonomous running state (EngineStatus other than 2)
- step 1 1 1 signaling a refusal of the first type, the value of the signal RDA Type is modified, by assigning it the value 1
- RTA Type 1
- RTA Type 2 1
- a step 1 for signaling a refusal of an assisted start is made, which will be described later.
- a validity test is performed to detect whether a second type assisted start refusal is activated by carrying out the validity tests of the following three conditions:
- RDA Det Active Vaut 1 the detection of an assisted start refusal is activated (RDA Det Active Vaut 1) If these three conditions are satisfied, this means that a refusal of the second type is detected, in this case a signaling step 1 13 is performed. a refusal of the second type, in the opposite case the step 108 of assisted start in progress is carried out.
- the step 1 13 of signaling a refusal of the second type the value of the signal RDA Type is modified, by assigning it the value 2 (RDA Type is equal to 2), which means that a refusal of assisted start of second type has been detected.
- step 1 is made to signal a refusal of an assisted start.
- step 1 of signaling a refusal of an assisted start the signal RDA Det is modified, by assigning it the value 1 (RDA Det is 1), which means that a refusal of assisted start has been detected.
- the Act_Codage signal is also modified, giving it the value 0 (Act_Codage is 0), which means that the coding of the diagnostic information is stopped.
- the waiting step 102 is carried out.
- the assisted start refusal detection method makes it possible, starting from the diagnostic signals established by the input module 3, to signal, by the activation of the RDA Det signal, that a start refusal has been detected.
- the method also makes it possible to determine the type of refusal and the signal by the management of the RDA type signal.
- the method activates, via the Act_Codage signal, the coding module 6 as soon as an assisted start is in progress.
- the steps of the detection method can be implemented by an electronic circuit, or in the software form, or in a programmable controller, implemented in the detection module 5.
- FIG. 4 shows a schematic view of a general embodiment of a coding module of diagnostic information.
- FIG. 4 also shows elements previously described in FIGS. 1 and 2.
- the coding module 6 comprises a coding means 60 for coding a diagnostic signal information transmitted from the input module 3 and transmitted by the connection 14.
- This signal information may be, for example, the MotorStatus, Vvéh or
- the coding means 60 makes it possible to receive a signal signal, or information, from the input module 3, to compare this signal.
- Signal information with a threshold, denoted Threshold, to emit a signal Cond_Signal Boolean of satisfactory condition according to the result of the comparison.
- Threshold a threshold
- a signal SignalCode is developed as a function of the time evolution of the signal.
- the coding means 60 comprise a coding block 61, a comparison means 62 and a configurable threshold generation module 63.
- the comparison module 62 compares the signal Signal, coming from the input module 3 and transmitted by the connection.
- the comparison module 62 outputs the Cond_Signal result of the comparison, transmitted by a connection 65, in the direction of the coding block 61.
- the Cond _Signal signal of satisfactory condition, result of the comparison is determined as follows:
- Threshold is false - 1 if the result of the comparison between the signals Signal and
- the coding block 61 also receives a signal Val_Signal from the detection module 5 via the connection 12, the signal RDA Det from the detection module 5 via the connection 52, the Act_Codage signal from the detection module 5 via the connection
- the signal Val_Signal corresponds to a Boolean validity signal that is generated by the test module 21. validity of signals. This signal Val_Signal makes it possible to determine the validity of the signal Signal:
- said block 61 After execution of the coding method implemented by the coding block 61, said block 61 transmits the SignalCode tracking signal corresponding to the result of the coding method and transmits it via a connection 66 to the backup module 7.
- FIG. 5 shows a schematic view of an embodiment of a module 6 for encoding the diagnostic information.
- FIG. 5 also shows elements previously described in FIGS. 1 to 4.
- the coding module 6 comprises coding means 500 to 503 for coding the received diagnostic information.
- Each coding means 500 to 503 respectively comprises a block 504 to 507 of coding.
- the coding blocks 504 to 507 each make it possible to implement a method for encoding the diagnostic information. This method of coding a diagnostic information will be described later in FIGS. 6a to 6d.
- the coding method is identical for each coding block 504 to 507.
- the signals representing the diagnostic information have been selected from among many signals that report on the general state of the system. Four main signals have been selected,
- the coding means 500 also comprises a comparison means 510 and a module 51 1 for generating a configurable threshold threshold 1.
- the comparison means compares the Motor Rotation signal, coming from the input module 3 and transmitted by a connection 512, with the threshold threshold from the module 51 1 and 513.
- the comparison means 510 transmits the result Cond_RotationMotor of the comparison, transmitted by a connection 14, to the block 504 coding.
- the signal Cond_RotationSatisfactory condition engine, result of the comparison is determined as follows:
- the coding block 504 also receives the signal
- Val_RotationEngine from the detection module 5 by the connection 54, the DA_Active signal from the connection-assisted startup management module 4 515, the Act_Codage signal from the detection module 5 by a connection 16 and the RDA signal Det since the detection module 5 by a connection 517.
- the coding block 504 sends a tracking signal RotationEngineCode which corresponds to the result of the coding method and transmits it via a connection 518 to the backup module 7.
- the coding means 501 also comprises a comparison means 520 and a module 521 for generating a configurable Threshold 2 threshold.
- the comparison means 520 compares the signal AccPos, coming from the input module 3 and transmitted by a connection 522, with the threshold Threshold2 coming from the module 521 and transmitted by a connection 523.
- the comparison means 520 sends the result Cond_AccPos of the comparison, transmitted by a connection 524, in the direction of the block 505 coding.
- Cond_AccPos satisfactory condition, result of the comparison, is determined as follows: Cond_AccPos: Boolean signal which is: - 0 if the position of the accelerator pedal of the vehicle is insufficient to allow assisted starting, that is, if the Accpos accelerator pedal position information is less than or equal to threshold Threshold2
- the coding block 505 also receives the signal Val_AccPos from the detection module 5 via the connection 55, the signal DA_Active from the connection-assisted startup management module 4 525, the Act_Codage signal from the detection module 5 by a connection 526 and the RDA Det signal from the detection module 5 via a connection 527.
- the coding block 505 transmits an AccPosCode tracking signal which corresponds to the result of the coding method and transmits it over a connection 528 to the backup module 7.
- the coding means 502 also comprises a comparison means 530 and a module 531 for generating a configurable threshold Threshold 3.
- the comparison means 530 compares the signal BV Pos, coming from the input module 3 and transmitted via a connection 532, with the threshold Threshold3 coming from the module 531 and transmitted via a connection 533.
- the comparison means 530 sends the result Cond BV Pos of the comparison, transmitted by a connection 534, towards the block 506 coding.
- the signal Cond B V Pos of satisfactory condition, result of the comparison is determined as follows: Cond B V Pos: Boolean signal which is:
- the coding block 506 also receives the signal Val_B V_Pos from the detection module 5 via the connection 56, the signal
- the coding block 506 transmits a BV PosCode tracking signal which corresponds to the result of the coding method and transmits it via a connection 538 to the backup module 7.
- the coding means 503 also comprises a comparison means 540 and a module 541 for generating a configurable threshold Threshold4.
- the comparison means 540 compares the signal
- TorquesRoues coming from the input module 3 and transmitted via a connection 542, with the threshold Threshold4 coming from the module 541 and transmitted via a connection 543.
- the comparison means 540 transmits the result Cond TorquesRoues of the comparison, transmitted by a connection 544 in the direction of block 507 coding.
- the coding block 507 also receives the signal Val TorquesRoues from the detection module 5 by the connection 57, the signal DA_Actif from the module 4 of assisted start management by a connection 545, the Act_Codage signal from the detection module 5 by a connection 546 and the RDA signal Det from the detection module 5 by a connection 547.
- the coding block 507 transmits a CoupleRouesCode tracking signal which corresponds to the result of the encoding method and transmits it over a connection 548 to the backup module 7.
- the different thresholds Threshold to Threshold4 are configurable and are determined as a function of the slope, the mass of the vehicle, the type of engine ...
- the coding module 6 may comprise other coding means. to encode the diagnostic information of other signals.
- FIGS. 6a, 6b, 6c and 6d show a flowchart illustrating the main phases of a method of coding a diagnostic information. This method can be applied to any selected information in order to make a diagnosis, such as information B V_Pos, RotationMoteur, AccPos, or CoupleRoues.
- the coding method consists in following the temporal evolution of a diagnostic signal information transmitted by the input module 3.
- This Diagnostic Signal information may change in value during assisted startup. These different changes correspond to separate states of the diagnostic signal information.
- the method is able to determine the distinct states of this diagnostic signal information and to assign a different value to the signal.
- the coding process begins with an initial step 200. During this step 200 the SignalCode output signal is initialized to the value -1. After this initial step 200, a comparison step 201 is performed in which the validity of the following condition is tested: the coding of the information is activated (Act_Codage worth 1) If this condition is verified, a comparison step 202 is performed, otherwise the initial step 200 is performed again.
- DA_Actif the assisted start is activated . If the three conditions are satisfied, a step 203 is performed, otherwise a next comparison step 21 1 is performed.
- a step 212 is performed, otherwise a next comparison step 220 is performed.
- step 221 the code 6 is assigned to the signal SignalCode signaling (SignalCode is 6), then a comparison step 222 is performed in which the value of the Act_codage signal is tested. If the Act_coding signal is 1, step 221 is carried out again, in the opposite case the coding of the received signal information is stopped and a step 300 is carried out to finish the coding. In the comparison step 223, the validity of the two following conditions is tested:
- step 227 the code 8 is assigned to the signal SignalCode signaling (SignalCode 8), then a comparison step 228 is performed in which the value of the Act_coding signal is tested. If the Act_coding signal is 1, step 227 is carried out again, in the opposite case the coding of the received signal information is stopped and a step 300 is carried out to finish the coding.
- step 205 the value of the Act_coding signal is tested. If the Act_coding signal is equal to 1 again in step 203, otherwise the coding of the received signal information is stopped and a step 300 is performed to finish the coding.
- step 206 the code 1 is assigned to the tracking SignalCode signal (SignalCode is 1), then a comparison step 207 is performed in which the value of the signal Cond_Signal of satisfactory condition is tested. If the signal Cond_Signal is 0, a step 209 is performed, otherwise a comparison step 208 is performed.
- step 208 the value of the Act_coding signal is tested. If the Act_coding signal is 1, step 206 is carried out again, in the opposite case the coding of the received signal information is stopped and a step 300 is carried out to finish the coding.
- step 209 the code 2 is assigned to the signal SignalCode signal (SignalCode is 2), then a comparison step 210 is performed in which the value of the Act_coding signal is tested. If the Act_coding signal is 1, step 209 is carried out again, in the opposite case the coding of the received signal information is stopped and a step 300 is carried out to finish the coding.
- step 212 is carried out again, in the opposite case the coding of the received signal information is stopped and a step 300 is carried out to finish the coding.
- the comparison step 300 it is tested whether an assisted start refusal has been detected during the assisted start. In the case where a refusal is detected, the value of the tracking SignalCode signal is saved, in the opposite case it is returned to the initial step 200. Indeed, the comparison step 300 is performed in which the value of the signal RDA Det is tested. If the RDA signal Det is 0, the initial step 200 is carried out again because there has been no detected refusal. In the opposite case, when the signal RDA Det is 1, a step 301 is performed in which the value of the signal SignalCode for tracking is recorded because a refusal has been detected, then the initial step 200 is carried out again.
- the steps of the coding method may be implemented by an electronic circuit, or in the software form, or in a programmable logic controller, implemented in the coding blocks 504 to 507.
Landscapes
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Human Computer Interaction (AREA)
- Control Of Transmission Device (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Control Of Driving Devices And Active Controlling Of Vehicle (AREA)
- Auxiliary Drives, Propulsion Controls, And Safety Devices (AREA)
- Regulating Braking Force (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP09754071A EP2268524B1 (fr) | 2008-04-18 | 2009-03-05 | Procede et systeme de diagnostic de l'etat de fonctionnement d'un mode de demarrage assiste d'un vehicule automobile |
CN200980123086.4A CN102066177B (zh) | 2008-04-18 | 2009-03-05 | 用于诊断机动车的辅助起动模式的运行状况的方法和系统 |
US12/988,433 US9014926B2 (en) | 2008-04-18 | 2009-03-05 | Method and system for diagnosing the operating status of an assisted start-up mode for a motor vehicle |
MX2010011475A MX2010011475A (es) | 2008-04-18 | 2009-03-05 | Metodo y sistema para diagnosticar el estado de operacion de un modo de arranque auxiliado para un vehiculo de motor. |
RU2010146998/11A RU2493985C2 (ru) | 2008-04-18 | 2009-03-05 | Способ и система диагностики рабочего состояния режима помощи при трогании с места автотранспортного средства |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0852656 | 2008-04-18 | ||
FR0852656A FR2930219B1 (fr) | 2008-04-18 | 2008-04-18 | Procede et systeme de diagnostic de l'etat de fonctionnement d'un mode de demarrage assiste d'un vehicule automobile |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2009144421A1 true WO2009144421A1 (fr) | 2009-12-03 |
Family
ID=40076665
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2009/050355 WO2009144421A1 (fr) | 2008-04-18 | 2009-03-05 | Procede et systeme de diagnostic de l'etat de fonctionnement d'un mode de demarrage assiste d'un vehicule automobile |
Country Status (8)
Country | Link |
---|---|
US (1) | US9014926B2 (fr) |
EP (1) | EP2268524B1 (fr) |
KR (1) | KR101587971B1 (fr) |
CN (1) | CN102066177B (fr) |
FR (1) | FR2930219B1 (fr) |
MX (1) | MX2010011475A (fr) |
RU (1) | RU2493985C2 (fr) |
WO (1) | WO2009144421A1 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN110901658B (zh) * | 2018-09-14 | 2021-04-20 | 北汽福田汽车股份有限公司 | 车辆及油门踏板的故障诊断方法、装置 |
US11623619B2 (en) * | 2019-12-10 | 2023-04-11 | Bendix Commercial Vehicle Systems Llc | Parking brake apparatus and method therefor |
Citations (6)
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US5590040A (en) * | 1992-08-19 | 1996-12-31 | Nippondenso Co., Ltd. | Self-diagnosis apparatus for vehicle |
FR2828450A1 (fr) * | 2001-08-07 | 2003-02-14 | Renault | Dispositif d'assistance au demarrage en cote pour vehicule automobile |
FR2841199A1 (fr) * | 2002-06-20 | 2003-12-26 | Renault Sa | Dispositif et procede de desserrage automatique du frein de parking automatique au demarrage |
US20040143695A1 (en) * | 2003-01-17 | 2004-07-22 | Mitsubishi Denki Kabushiki Kaisha | Vehicular electronic control apparatus |
FR2894548A1 (fr) * | 2005-12-13 | 2007-06-15 | Renault Sas | Procede de controle du fonctionnement d'un vehicule base sur une strategie de diagnostic embarque definissant differents types de pannes |
DE102007021871A1 (de) * | 2006-05-20 | 2008-02-28 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Verfahren und System zum Überwachen des Betriebs eines Antriebsstrangs eines Fahrzeugs |
Family Cites Families (5)
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---|---|---|---|---|
RU2104883C1 (ru) * | 1996-11-15 | 1998-02-20 | Есин Сергей Александрович | Система управления и диагностики транспортного средства |
DE19826131A1 (de) * | 1998-06-12 | 1999-12-16 | Bosch Gmbh Robert | Elektrisches Bremssystem für ein Kraftfahrzeug |
DE10063061A1 (de) * | 2000-12-18 | 2002-06-20 | Lucas Varity Gmbh | Verfahren und System zur Anfahrunterstützung eines Kraftfahrzeuges |
WO2004068003A1 (fr) * | 2003-01-29 | 2004-08-12 | Honda Motor Co., Ltd. | Dispositif de determination de defaillance pour variateur de vitesse et dispositif de determination de panne pour embrayage de demarrage |
DE102004007160A1 (de) * | 2004-02-12 | 2005-08-25 | Volkswagen Ag | Verfahren zur Verhinderung von Lastwechselschlägen bei einem Kraftfahrzeug |
-
2008
- 2008-04-18 FR FR0852656A patent/FR2930219B1/fr not_active Expired - Fee Related
-
2009
- 2009-03-05 EP EP09754071A patent/EP2268524B1/fr active Active
- 2009-03-05 KR KR1020107025857A patent/KR101587971B1/ko active IP Right Grant
- 2009-03-05 MX MX2010011475A patent/MX2010011475A/es unknown
- 2009-03-05 RU RU2010146998/11A patent/RU2493985C2/ru active
- 2009-03-05 US US12/988,433 patent/US9014926B2/en not_active Expired - Fee Related
- 2009-03-05 CN CN200980123086.4A patent/CN102066177B/zh not_active Expired - Fee Related
- 2009-03-05 WO PCT/FR2009/050355 patent/WO2009144421A1/fr active Application Filing
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5590040A (en) * | 1992-08-19 | 1996-12-31 | Nippondenso Co., Ltd. | Self-diagnosis apparatus for vehicle |
FR2828450A1 (fr) * | 2001-08-07 | 2003-02-14 | Renault | Dispositif d'assistance au demarrage en cote pour vehicule automobile |
FR2841199A1 (fr) * | 2002-06-20 | 2003-12-26 | Renault Sa | Dispositif et procede de desserrage automatique du frein de parking automatique au demarrage |
US20040143695A1 (en) * | 2003-01-17 | 2004-07-22 | Mitsubishi Denki Kabushiki Kaisha | Vehicular electronic control apparatus |
FR2894548A1 (fr) * | 2005-12-13 | 2007-06-15 | Renault Sas | Procede de controle du fonctionnement d'un vehicule base sur une strategie de diagnostic embarque definissant differents types de pannes |
DE102007021871A1 (de) * | 2006-05-20 | 2008-02-28 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Verfahren und System zum Überwachen des Betriebs eines Antriebsstrangs eines Fahrzeugs |
Also Published As
Publication number | Publication date |
---|---|
RU2010146998A (ru) | 2012-05-27 |
RU2493985C2 (ru) | 2013-09-27 |
US20120004817A1 (en) | 2012-01-05 |
EP2268524A1 (fr) | 2011-01-05 |
MX2010011475A (es) | 2010-12-21 |
FR2930219A1 (fr) | 2009-10-23 |
EP2268524B1 (fr) | 2013-01-02 |
CN102066177A (zh) | 2011-05-18 |
CN102066177B (zh) | 2015-01-21 |
KR20110007203A (ko) | 2011-01-21 |
US9014926B2 (en) | 2015-04-21 |
FR2930219B1 (fr) | 2010-04-23 |
KR101587971B1 (ko) | 2016-04-12 |
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