CN102951107A - Failure judgment apparatus for vehicle system - Google Patents
Failure judgment apparatus for vehicle system Download PDFInfo
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- CN102951107A CN102951107A CN2012103069014A CN201210306901A CN102951107A CN 102951107 A CN102951107 A CN 102951107A CN 2012103069014 A CN2012103069014 A CN 2012103069014A CN 201210306901 A CN201210306901 A CN 201210306901A CN 102951107 A CN102951107 A CN 102951107A
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Abstract
Provided is a failure judgment apparatus (100) for a vehicle system which is capable of judging whether the vehicle speed information of the wheel velocity sensor (30) is correct or not and judging whether any failure is generated to the vehicle system (1000) including a CAN (200) for a vehicle that even is not provided with a velocity sensor at the driving shaft of the transmission machine (TM). The CAN (200) is utilized for obtaining the first velocity information of wheel rotating speed of the vehicle detected via the wheel speed sensor (30) and the second velocity information obtained based on the driving information of the vehicle. When the difference between the first velocity information and the second velocity information is beyond the regulated value, it is determined that the vehicle system (1000) has some problem.
Description
Technical field
The present invention relates to a kind of unusual abnormity judgement set of judging Vehicular system according to speed information.
Background technology
As the mode of obtaining speed information, disclose following a kind of method: the outgoing side axle drive shaft at the change-speed box of automatic speed changing vehicle (below be also referred to as the AT vehicle) arranges tachogen, measures the speed of a motor vehicle according to the rotating speed of outgoing side axle drive shaft.
Patent documentation 1: Japanese kokai publication hei 10-002405 communique
Summary of the invention
The problem that invention will solve
The vehicle-wheel speed sensor that is arranged at each wheel shaft of vehicle in utilization obtains in the situation of speed information, if comprise CAN (Controller Area Network: controller local area network) etc. the Vehicular system of communication network exist unusual, the speed information mal that sometimes becomes then.As prior art, if except vehicle-wheel speed sensor, can also tachogen be set at change-speed box outgoing side axle drive shaft, can judge then whether the signal that vehicle-wheel speed sensor obtains is correct.
Yet, have following problem: not arranging in the vehicle of tachogen at change-speed box outgoing side axle drive shaft, can't measure the speed of a motor vehicle according to the rotating speed of change-speed box outgoing side axle drive shaft, can't judge whether the speed information of vehicle-wheel speed sensor is correct.Therefore, produce at the Vehicular system that comprises communication network in the situation of the correctness that unusually can not guarantee speed information, in Vehicular system, utilize sometimes the off-square speed information.
The problem to be solved in the present invention is to provide following a kind of abnormity judgement set: even the vehicle of tachogen is not set at change-speed box outgoing side axle drive shaft, whether the speed information that also can judge vehicle-wheel speed sensor is correct, and can judge whether the Vehicular system that comprises communication network is normal based on this.
For the scheme of dealing with problems
In the present invention, under the difference of obtaining the second speed information that by vehicle-wheel speed sensor detected the first speed information and this first speed of a motor vehicle and activation bit according to vehicle calculate via vehicle-mounted communication network is situation more than the specified value, be judged as Vehicular system and exist unusually, address the above problem thus.
The effect of invention
According to the present invention, can judge whether the first speed information is correct with the second speed information that calculates according to the activation bit that obtains from the signal source different from vehicle-wheel speed sensor, and judge whether the Vehicular system that comprises communication network exists unusually, therefore, even the vehicle of tachogen is not set at change-speed box outgoing side axle drive shaft, can judges also whether Vehicular system produces unusually.Consequently, can Vehicular system be moved.
Description of drawings
Fig. 1 is the block diagram that possesses the Vehicular system of the related abnormity judgement set of present embodiment of the present invention.
Fig. 2 is the diagram of circuit of the control process of the related abnormity judgement set of expression present embodiment of the present invention.
Description of reference numerals
1000: Vehicular system; 100: abnormity judgement set (arithmetic processing apparatus); 200:CAN (Controller Area Network); 300: behavior control device (arithmetic processing apparatus); 400: parking supportive device (arithmetic processing apparatus); 500: accelerate restraining device (arithmetic processing apparatus) during low speed; 20:ABS device (arithmetic processing apparatus); 30: vehicle-wheel speed sensor; 40:ECM device (arithmetic processing apparatus); 50: engine speed sensor; 60: vehicle control device; 70: speed change level sensor (arithmetic processing apparatus); 80: clutch status sensor; TM: change-speed box; EG: driving engine.
The specific embodiment
Below, embodiments of the present invention are described with reference to the accompanying drawings.In the present embodiment, describe as an example of the situation that abnormity judgement set involved in the present invention is applied to the abnormity judgement set 100 in the Vehicular system 1000 example, this abnormity judgement set 100 accelerates the various arithmetic processing apparatus such as restraining device 500, ABS device 20, ECM device 40, vehicle control device 60 during with parking supportive device 400, low speed and consists of Vehicular system 1000.
The Vehicular system 1000 of present embodiment is installed in the hand gear vehicle (below be also referred to as " MT vehicle "), comprise relevant device, the equipment of a plurality of and vehicle control, these devices, equipment are being connected by the mode that the communication networks such as CAN (Controller Area Network) 200 receive transmitted signal.
As shown in Figure 1, the Vehicular system 1000 of present embodiment possesses abnormity judgement set 100, behavior control device 300, accelerate restraining device 500 when parking supportive device 400 and/or low speed, ABS (Anti-locked braking system: anti-lock braking system) device 20, vehicle-wheel speed sensor 30, ECM (Engine control module: engine control module) device 40, engine speed sensor 50, vehicle control device 60, speed change level sensor 70, clutch status sensor 80, driving engine (EG), change-speed box (TM) and the CAN 200 that is connected with each arithmetic processing apparatus in the Vehicular system 1000.
The following describes each arithmetic processing apparatus of the Vehicular system 1000 that consists of present embodiment.The behavior control device 300 of present embodiment according to after the judgement of the abnormity judgement set 100 that will describe in detail, accelerate the state of each arithmetic processing apparatus such as restraining device 500 during to the parking supportive device 400 in the Vehicular system 1000, low speed and control.For example, in the situation that it is unusual to be judged as Vehicular system 1000 generations, behavior control device 300 temporarily stops the action of each arithmetic processing apparatus, and perhaps cancellation is judged.
The parking supportive device 400 of present embodiment is the device of the vehicle operating when supporting storing cycle to the parking stall.Mode without particular limitation of parking supportive device 400, for example can calculate for storing cycle is carried out auto-steering, turns to auxiliaryly to the mobile route on the parking stall of appointment, also the mobile route that calculates can be presented in the telltale and support chaufeur to turn to.In addition, accelerating restraining device 500 during low speed is such as lower device: mis-accelerator pressing is controlled the action of vehicle in the situation that want stop vehicle during low speed driving.In addition, in the present embodiment, as consisting of Vehicular system 1000 and utilizing an example of the car-mounted device of speed information, illustration accelerate restraining device 500 when parking supportive device 400 and low speed, but come the device of control action to be not limited to these devices according to the judgement of abnormity judgement set 100.
The ABS device 20 of present embodiment is following a kind of device: apply at emergency braking or on low friction road surface in the situation such as braking and prevent tire locking (rotation stops), the driving safety that keeps thus vehicle, and raising can be by turning to the possibility of avoiding barrier.The ABS device of present embodiment is according to controlling best drg by the vehicle-wheel speed sensor 30 detected wheel velocity information that are installed on each wheel shaft.Although be not particularly limited, the vehicle-wheel speed sensor 30 inspection vehicle wheel speeds of present embodiment are the non-contact sensors that detects by the caused changes of magnetic field of rotor (gear rotor, magnet rotor) of together rotating with wheel.
In addition, (Electronic Stability Control: electronic stability control) device replaces ABS device 20 also can to configure ESC.This is because the ESC device has utilized vehicle-wheel speed sensor 30 detected vehicle wheel rotational speeds to control drg, driving engine.The ESC device of present embodiment also is that control is to the device of the driving of vehicle.Usually, vehicle is turned according to the steering operation of chaufeur, but the situation that trailing wheel breaks away (ovdersteering) or front-wheel breaks away (understeer) occurs in unexpected operation owing to pavement state changes suddenly or carries out for avoiding barrier sometimes.In this case, ESC device and detected vehicle movement are correspondingly braked the control of control and engine torque by Self-pressurizing agri, prevent from thus breakking away, and make the attitude stabilization of the vehicle when turning.
The ECM device 40 of present embodiment is according to the device that is come control engine by the engine speed sensor 50 detected information that are arranged at change-speed box at least.Engine speed sensor 50 is installed in the end of bent axle, obtains the corresponding signal of rotation with crankshaft timing rotor (gear).ECM device 40 by within the set time to counting with the unit crank angle signal of combustion engine rotary synchronous ground output or the cycle of benchmark crank angle signal being measured, can obtain the engine speed (revolution of time per unit: r.p.m) from engine speed sensor 50.
The vehicle control device 60 of present embodiment obtains by the speed change level sensor 70 detected number of steps of speedss that are input to change-speed box (TM).Without particular limitation of the mode of speed change level sensor 70, can use the limit switch of the position that can detect the operated shifter bar of chaufeur etc.
In addition, the vehicle control device 60 of present embodiment obtains the coupled condition (connect still and do not connect) by the power-transfer clutch of clutch status sensor 80 detected change-speed boxs (TM).80 pairs of the clutch status sensors of present embodiment are detected by the tread-on quantity of the pedal of clutch that chaufeur is trampled.In addition, the ratio of the rotating speed of the outgoing side of vehicle control device 60 calculation engines and the rotating speed of the input side of change-speed box, at this than in for the situation that approaches the value in zero the specified value scope, can obtain the expression power-transfer clutch for connecting the information of disarm state, than being in the situation near the value in 1 the specified value scope, can obtain the expression power-transfer clutch is the information of coupled condition at this.
The CAN 200 of present embodiment makes the communication network that can communicate with the communication protocol of regulation between the ECU (Electronic Control Unit) of each arithmetic processing apparatus that consists of Vehicular system 1000.The ECU of each arithmetic processing apparatus is made of microprocessor, external equipment (input-output apparatus etc.) and communication module.Vehicular system 1000 carries out sending and receiving of information so that the ECU of each arithmetic processing apparatus cooperates to realize several functions mutually via communication networks such as CAN.Communication network is not limited to CAN, can use LIN (Local Interconnect Network: local internet) etc.
The related abnormity judgement set 100 of present embodiment of invention then, is described.The related abnormity judgement set of present embodiment 100 judges that above-mentioned Vehicular system 1000 is normally to play a role or produce unusual (fault, process wrong) and normally do not play a role.In Vehicular system 1000 unusual, except the fault of CAN 200 and each arithmetic processing apparatus, also comprise the delay of the signal relevant with communication.Because the delays of processing in the delay of processing in delay that the CAN bus produces, CAN controller, the conversion timing signal of CAN transceiver and each arithmetic processing apparatus etc. are former thereby the delay that produces signal.
The control setup 10 of abnormity judgement set 100 possesses: (Read Only Memory: read-only memory (ROM)), it stores the unusual program of judging Vehicular system 1000 according to the speed of a motor vehicle to ROM; (Central Processing Unit: central process unit), it is used as abnormity judgement set 100 by execution the program among this ROM of being stored in and plays a role as the CPU of actuating circuit; And RAM (Random Access Memory: random access memory), it plays a role as memory storage that can access.The judged result of control setup 10 is sent to behavior control device 300.In the situation that it is unusual to be judged as Vehicular system 1000 generations, behavior control device 300 accelerates the processing of restraining device 500 when ending parking supportive devices 400 and low speed.
The control setup 10 of the abnormity judgement set 100 that present embodiment is related possesses wheel velocity and obtains function, speed of a motor vehicle computing function and unusual arbitration functions.The control setup 10 of present embodiment can be by be used for realizing above-mentioned functions software and above-mentioned hardware cooperate to carry out each function.
Below, each function of realizing of the control setup 10 of specification exception judgment means 100 respectively.
The related abnormity judgement set 100 of present embodiment of the present invention obtains based on the first speed information of the vehicle wheel rotational speed of vehicle via CAN200 and at least temporarily stores this first speed information.
In addition, with obtain the first speed information concurrently, the related abnormity judgement set 100 of present embodiment of the present invention calculates the second speed information according to the activation bit as signal source, and this activation bit is different from the vehicle wheel rotational speed by car speed sensor 30 detections on the basis that becomes the first speed information.
Do not limit especially, but the abnormity judgement set of present embodiment 100 calculates the second speed information according to the activation bit of the coupled condition of the number of steps of speeds of the rotating speed that comprises vehicle motor, vehicle, vehicular clutch.Specifically, the abnormity judgement set 100 pre-stored converter speed ratios corresponding with each number of steps of speeds (gear ratio), reading in vehicle and power-transfer clutch is the corresponding converter speed ratio of number of steps of speeds (gear ratio) of coupled condition, recently calculates the second speed information with " rotating speed of driving engine EG " divided by this speed change.That is to say, the rotating speed of the second speed information=driving engine/with the corresponding converter speed ratio of the number of steps of speeds that is connected (gear ratio).Incidentally, the second speed information is corresponding with the rotating speed of the tire that calculates according to engine speed.
The first speed information that the abnormity judgement set 100 of present embodiment will obtain compares with the second speed information that calculates.That is to say, will detect and compare with the second speed information as wheel velocity that calculates according to the activation bit that comprises engine speed from the first speed information as wheel velocity that ABS device 20 obtains by vehicle-wheel speed sensor 30.And in the situation that the difference of the first speed information and the second speed information is more than the specified value, abnormity judgement set 100 is judged as Vehicular system 1000 and produces unusual.
Define as specified value that be used for to judge the threshold value that Vehicular system 1000 is unusual according to the permissible error between the first speed information of obtaining by experiment and the second speed information.
About the specified value of present embodiment, consider because number of steps of speeds difference and the transmission of propulsive effort there are differences this point can correspondingly be set specified value with the number of steps of speeds that is connected when calculating the second speed information.In this case, can be according to the first speed information of each number of steps of speeds of obtaining by experiment in advance and the second speed information poor, to the different specified value of each number of steps of speeds definition, and pre-stored in the ROM 12 of control setup 10.
Do not limit especially, but the first specified value of setting preferably will be relatively high at the converter speed ratio of vehicle the time is made as than the high value of the second specified value of setting when converter speed ratio is lower than above-mentioned converter speed ratio relatively.This be because, number of steps of speeds less (LOW side), converter speed ratio is larger, and reversing of axle is larger, cause the propulsive effort of driving engine by the absorption of reversing of axle, therefore have the second speed information trend large with the difference change of the wheel velocity (the first speed information) of reality.Particularly, during starting axle reverse large, the high value of the second specified value of setting when the first specified value of setting in the time of therefore preferably will being 1 grade at the number of steps of speeds of vehicle is made as and is 2 grades than the number of steps of speeds at vehicle.At this, 1 grade is the highest number of steps of speeds of converter speed ratio, and 2 grades is the high number of steps of speeds of converter speed ratio second after 1 grade.In addition, the converter speed ratio in the present embodiment is equivalent to gear ratio, is the ratio of rotating speed and the rotating speed of the output shaft of change-speed box TM of the input shaft of change-speed box TM.
In addition, if consider the reversing of axle when propulsive effort with driving engine is delivered to tire, then be right after after change number of steps of speeds axle to reverse quantitative change large, therefore preferred according to from obtaining the signal that power-transfer clutch connects, calculating the second speed information through the engine speed behind the specified time.
In addition, in automatic speed changing vehicle (below, be also referred to as " AT vehicle "), with the speed of a motor vehicle and the engine speed converter speed ratio (gear ratio) that correspondingly automaticallyes switch, therefore in the AT vehicle, need to arrange the output rotation sensor that is arranged at change-speed box.
In addition, the derailleur control device of AT vehicle is controlled automatic transmission with hydraulic torque converter according to the output information of output rotation sensor, but the ECU of the ECU of derailleur control device and ABS device 20 is formed on the chip (CPU) generally speaking.Therefore, can be subject to the impact of the signal delay etc. on other arithmetic processing apparatus fault, the CAN bus by the detected speed information of the vehicle-wheel speed sensor of AT vehicle.And, by the first speed information that ABS device 20 is obtained with compared by the detected speed information of output rotation sensor that is arranged at change-speed box, guarantee the correctness of this first speed information.
Therewith relatively, in the present embodiment, the ECU of the ECU of abnormity judgement set 100 and ABS device 20 is made of separate chip (CPU), thus the ECU of abnormity judgement set 100 to be connected to the position of CAN 200 different from the position that the ECU of ABS device 20 is connected to CAN 200.Therefore, therefore the signal delay of the delay of processing in the delay that can be subject to processing delay that the CAN bus produces, the CAN controller from the first speed information of the ECU of ABS device 20 output, the signal conversion time of CAN transceiver and each arithmetic processing apparatus etc. or the impact of CAN and each arithmetic processing apparatus fault might be obtained by abnormity judgement set 100 with the off-square speed of a motor vehicle.And, in the change-speed box of the vehicle of the abnormity judgement set 100 that present embodiment is installed, the output rotation sensor is not set, therefore also can't be by will be by ABS device 20 the first speed information that obtains and the correctness that is compared to guarantee the first speed information by the detected speed information of output rotation sensor.
But, the second speed information that the activation bit that the abnormity judgement set 100 of present embodiment can utilize basis to obtain from other signal source calculates is judged from the correctness of the first speed information of the ECU output of ABS device 20, therefore can monitor the correctness of the first speed information.That is to say, as shown in Figure 1, the abnormity judgement set 100 of present embodiment is according to the correctness of assessing the first speed information from the information of obtaining with the mutually different cell S 1 of the point of connection of CAN 200 and cell S 2, wherein, this cell S 1 comprises ABS device 20, and this cell S 2 comprises ECM device 40 and vehicle control device 60.Specifically, the abnormity judgement set 100 of present embodiment compares by first speed information that will obtain from the ABS device 20 of cell S 1 and the second speed information that the activation bit (engine speed, power-transfer clutch coupled condition, speed change level) that obtains according to ECM device 40 and vehicle control device 60 from cell S 2 calculates, and judges the correctness of the first speed information.
Be more than the specified value and in the first speed information off-square situation in the difference that is judged as the first speed information and the second speed information, high in the possibility that some fault occurs between cell S 1 and the abnormity judgement set 100 or between cell S 2 and the abnormity judgement set 100, therefore can be judged as in the Vehicular system that comprises cell S 1, cell S 2 and CAN 200, produced unusual.
Then, according to the control process of the abnormity judgement set 100 of the flowchart text present embodiment of Fig. 2.
At first, in step 10, abnormity judgement set 100 obtains the first speed information via CAN 200 from the ABS device.Detect the first speed information by vehicle-wheel speed sensor 30.
Then, in step 11, abnormity judgement set 100 obtains the coupled condition of power-transfer clutch from clutch status sensor 80 via CAN 200, and obtains number of steps of speeds via CAN 200 from speed change level sensor 70.
In following step 12, abnormity judgement set 100 judges that whether number of steps of speeds is 1 grade, if 1 grade then enters step 13, then enters step 20 if not 1 grade.
In step 13, abnormity judgement set 100 judges whether power-transfer clutch connects.If power-transfer clutch does not connect then end process, in the situation that connecting, power-transfer clutch enters step 14.
In step 14, abnormity judgement set 100 obtains engine speed via CAN 200 from ECM device 40.And abnormity judgement set 100 obtains the converter speed ratio (gear ratio) corresponding with 1 grade with reference to being stored in number of steps of speeds among the ROM 12 and the corresponding relation of converter speed ratio (gear ratio).At this, converter speed ratio refers to the ratio of rotating speed and the rotating speed of the output shaft of change-speed box of the input shaft of change-speed box.The value of converter speed ratio is by each change-speed box and difference, but the converter speed ratio of 1 grade (LOW) is the highest, and along with the numerical value of number of steps of speeds uprises and the converter speed ratio reduction, the converter speed ratio of the most high-grade (TOP) is minimum.And abnormity judgement set 100 recently calculates the second speed information according to engine speed with the speed change corresponding with the number of steps of speeds that is acquired power-transfer clutch connection connection information.
Turn back to step 20, enter step 21 in the situation that number of steps of speeds is 2 grades, abnormity judgement set 100 judges whether power-transfer clutch connects.If power-transfer clutch does not connect, then end process enters step 22 in the situation that power-transfer clutch connects.
The processing of step 22 is identical with the processing of above-mentioned steps 14.Abnormity judgement set 100 obtains engine speed via CAN 200 from ECM device 40, obtain the converter speed ratio (gear ratio) corresponding with 2 grades with reference to number of steps of speeds with the corresponding relation of converter speed ratio (gear ratio), the second speed information when recently calculating 2 grades according to engine speed with the speed change corresponding with the number of steps of speeds that is acquired power-transfer clutch connection connection information.
In addition, in the present embodiment, end process when number of steps of speeds in step 20 is not 2 grades, but can judge whether number of steps of speeds is 3 grades, and by with step 14, the second speed information when 22 identical methods are calculated 3 grades.Certainly, be not limited to 3 grades, can be until the highest number of steps of speeds the second speed information when using identical method and calculating each number of steps of speeds.
In following step 15, abnormity judgement set 100 compares the first speed information and the second speed information, judges whether the difference of the two is more than the specified value α.In the situation that difference enters step 16 for more than the specified value α, be judged as Vehicular system 1000 and produce unusually, in the situation that difference enters step 17 less than specified value α, being judged as Vehicular system 1000 does not have unusual.
In step 18, abnormity judgement set 100 outputs to behavior control device 300 with step 16,17 judged result.
In step 19, behavior control device 300 is according to the judged result of abnormity judgement set 100, comes the action of each arithmetic processing apparatus of Vehicular system 1000 is controlled.Specifically, be judged as Vehicular system 1000 at abnormity judgement set 100 and produce unusual and can not get in the situation of correct speed information, behavior control device 300 makes parking supportive device 400 stop action and/or accelerates restraining device 500 when making low speed and stops action.Thus, the acceleration in the time of can preventing according to off-square speed information execution parking support or execution low speed suppresses processing.
The following effect of abnormity judgement set 100 performances that present embodiment of the present invention is related.
The present invention obtains by vehicle-wheel speed sensor 30 detected the first speed informations via vehicle-mounted CAN 200, under the difference of this first speed information and the second speed information that calculates according to the activation bit of vehicle is situation more than the specified value, being judged as Vehicular system 1000 produces unusual, therefore, even the vehicle of tachogen is not set at change-speed box outgoing side axle drive shaft, also can monitor that whether Vehicular system produces unusually, makes Vehicular system move based on the correct speed of a motor vehicle according to the detected speed of a motor vehicle of vehicle-wheel speed sensor.
In the situation that the present invention is applied to the hand gear vehicle, activation bit according to the coupled condition of the converter speed ratio of the rotating speed that comprises vehicle motor, transmission for vehicles and vehicular clutch calculates the second speed information, therefore can obtain the second speed information according to the information of obtaining from the signal source different from vehicle-wheel speed sensor 30.Thus, even the hand gear vehicle of the present embodiment of tachogen is not set at change-speed box outgoing side axle drive shaft, can judge also whether the first speed information is correct, and can judge whether the Vehicular system 1000 that comprises CAN 200 and each arithmetic processing apparatus is normal according to this.
In the present invention, by correspondingly setting the specified value of the threshold value of the difference that becomes the first speed information and the second speed information with converter speed ratio, will be according to the difference of converter speed ratio and the delay of the propulsive effort transmission that causes such as reversing of axle also different this point take into account, can assess rightly the first speed information according to the second speed information.Consequently, can judge accurately whether the correctness of the first speed information and Vehicular system 1000 produce unusually.
In the situation that number of steps of speeds low (LOW) and converter speed ratio is relatively high, the delay that the propulsive effort that the reversing etc. of axle causes transmits is large, even when normal, also exist the difference of the first speed information and the second speed information to become large trend, in the present invention, the first specified value that to set when converter speed ratio is relatively high is made as the high value of the second specified value of setting during for relatively low converter speed ratio than at converter speed ratio, therefore consider the impact of propulsive effort transmission characteristic, can assess rightly the first speed information according to the second speed information.Consequently, can judge accurately whether the correctness of the first speed information and Vehicular system 1000 produce unusually.
Above, embodiments of the present invention have been described, be in order easily to understand the present invention but put down in writing these embodiments, rather than in order to limit the present invention.Thereby disclosed each key element of above-mentioned embodiment also comprises all design modifications, the equivalent that belongs to technical scope of the present invention.
In addition, in this manual, as an example of abnormity judgement set involved in the present invention, fetch the abnormity judgement set 100 that consists of Vehicular system 1000 to linking to each other with other device by CAN 200 and be illustrated, but the present invention is not limited thereto.
In addition, in this manual, example as the abnormity judgement set that possesses wheel velocity acquiring unit involved in the present invention, speed of a motor vehicle calculating unit and abnormal deciding means, illustrated to possess and carried out the abnormity judgement set 100 that wheel velocity obtains the control setup 10 of function, speed of a motor vehicle computing function and unusual arbitration functions, but the present invention is not limited thereto.
Claims (4)
1. the abnormity judgement set of a Vehicular system, it is connected with the arithmetic processing apparatus that is installed on vehicle by communication network, is used for unusually the judging of Vehicular system, and the abnormity judgement set of this Vehicular system possesses:
The wheel velocity acquiring unit, it obtains the first speed information based on the vehicle wheel rotational speed of above-mentioned vehicle via above-mentioned communication network;
Speed of a motor vehicle calculating unit, its activation bit according to above-mentioned vehicle calculates the second speed information; And
Abnormal deciding means, above-mentioned the first speed information that it will get access to compares with above-mentioned the second speed information that calculates, in the situation that the difference of above-mentioned the first speed information and above-mentioned the second speed information is more than the specified value, is judged as above-mentioned Vehicular system and produces unusual.
2. the abnormity judgement set of Vehicular system according to claim 1 is characterized in that,
Above-mentioned vehicle is the hand gear vehicle,
Above-mentioned speed of a motor vehicle calculating unit calculates above-mentioned the second speed information according to the above-mentioned activation bit of the coupled condition of the power-transfer clutch of the converter speed ratio of the change-speed box that comprises the rotating speed of the driving engine of above-mentioned vehicle, above-mentioned vehicle and above-mentioned vehicle.
3. the abnormity judgement set of Vehicular system according to claim 1 and 2 is characterized in that,
The afore mentioned rules value is correspondingly set with above-mentioned converter speed ratio.
4. the abnormity judgement set of Vehicular system according to claim 3 is characterized in that,
The first specified value of setting when above-mentioned converter speed ratio is relatively high is the high value of the second specified value of setting during for relatively low converter speed ratio than at above-mentioned converter speed ratio.
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| JP2011183240A JP2013043575A (en) | 2011-08-25 | 2011-08-25 | Failure determination device of vehicle system |
| JP2011-183240 | 2011-08-25 |
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| CN102951107A true CN102951107A (en) | 2013-03-06 |
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