CN103625306A - Torque monitoring system of electric vehicle - Google Patents
Torque monitoring system of electric vehicle Download PDFInfo
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- CN103625306A CN103625306A CN201210297882.3A CN201210297882A CN103625306A CN 103625306 A CN103625306 A CN 103625306A CN 201210297882 A CN201210297882 A CN 201210297882A CN 103625306 A CN103625306 A CN 103625306A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
Abstract
The invention provides a torque monitoring system of an electric vehicle. The torque monitoring system comprises an information acquisition module, a simulation torque generation module, a judgment module and a fault diagnosis module. The information acquisition module is used for acquiring vehicle control signals, vehicle state signals and motor torque from a torque request system. The simulation torque generation module is used for generating simulation motor torque according to the vehicle control signals and the vehicle state signals. The judgment module is used for comparing the difference value between the motor torque and the simulation motor torque, determining abnormity of the torque request system when the difference value is larger than a predetermined threshold value, and generating a fault signal. The fault diagnosis module receives the fault signal, then determines the fault type of the torque request system according to the fault signal and adjusts the motor torque. According to the embodiment of the torque monitoring system of the electric vehicle, the motor torque which is possibly wrong due to calculation, affected by the hardware problem, the software problem, the electromagnetic interference, the human errors and the like of the torque request system, of a vehicle controller can be effectively detected and controlled, the torque of the vehicle is prevented from getting out of control, and the driving safety is effectively ensured.
Description
Technical field
The present invention relates to field of automobile, particularly a kind of torque monitoring system of electronlmobil.
Background technology
Along with the high speed development of global economy, the energy and environmental issue become increasingly conspicuous, and countries in the world are faced with the significant challenge such as energy security, climate change and urban air pollution.In recent years, countries in the world were all appealing to take low-carbon economy policy, and this has promoted the development of new-energy automobile, and new-energy automobile technological advance, application and industrialization will drive its upstream and downstream industry development, bring basic change to the energy and environment.New-energy automobile technology as a zero-emission---electric vehicle engineering has become countries in the world government, one of focus that enterprise and scientific research institution converge.Electronlmobil replaces combustion engine with motor, there is noise low, pollution-free, use the electric energy of wide material sources as power, can utilize " the paddy electricity " of electrical network cheapness to charge at night, playing the peak-valley difference of stabilizing electrical network, effectively improve the degree of utilization of the energy, is the first-selected trend of current Ge great car company development.
Electronlmobil of the prior art comprises entire car controller, and entire car controller comprises torque request system, motor, electric machine controller, battery management system, Automatic Transmission, power battery pack, charger, display terminal etc.Wherein, motor is unique propulsion source of electronlmobil; Entire car controller is the core that car load is controlled, for controlling the seamless link of electric machine controller and automatic gearbox control system, to realize driving performance and the energy optimization that vehicle is good.
Electronlmobil is driven by motor, motor and driving engine have distinct torque characteristic curve, may be because the reasons such as the hardware problem of the torque request system of entire car controller, software issue, electromagnetic interference, mistake cause vehicle torque situation out of control in the situation that some are special, this situation can be brought greatly potential safety hazard to Vehicle Driving Cycle.
Summary of the invention
The present invention is intended at least one of solve the problems of the technologies described above.
For this reason, the object of the invention is to propose a kind of torque monitoring system that can effectively guarantee the electronlmobil of traffic safety.
To achieve these goals, embodiments of the invention provide a kind of torque monitoring system of electronlmobil, described electronlmobil comprises torque request system, described torque request system for detection of and according to trailer reversing signal and Vehicular status signal, calculate Motor torque, described torque monitoring system comprises: simulation torque generation module, described simulation torque generation module is for obtaining described trailer reversing signal from described torque request system, described Vehicular status signal and described Motor torque, and generate simulated machine moment of torsion according to described trailer reversing signal and described Vehicular status signal, judge module, described judge module is used for the difference between more described Motor torque and described simulated machine moment of torsion, and when described difference is greater than predetermined threshold, judges described torque request system exception, and generates breakdown signal, fault diagnosis module, described fault diagnosis module is connected with described judge module, for after receiving described breakdown signal, according to described breakdown signal, judge the fault type of described torque request system, and described fault type is sent to described torque request system so that described torque request system is adjusted described Motor torque according to described fault type.
In addition, the torque monitoring system of electronlmobil according to the above embodiment of the present invention can also have following additional technical characterictic:
In some instances, described Motor torque comprises resolves moment of torsion, filtering moment of torsion, arbitration moment of torsion and output torque, and described simulated machine moment of torsion comprises simulation parsing moment of torsion, analog filtering moment of torsion and simulation arbitration moment of torsion.
In some instances, described simulation torque generation module comprises: simulation torque parsing module, for calculating simulation parsing moment of torsion according to described trailer reversing signal and Vehicular status signal; Simulation torque filtration module, for carrying out smoothing processing to obtain analog filtering moment of torsion by described parsing moment of torsion; Simulation torque arbitration modules, for controlling to obtain simulation arbitration moment of torsion according to the maximum tractive torque of motor and maximum generation moment of torsion to described filtering moment of torsion.
In some instances, described judge module comprises first to fourth judge module, wherein, described the first judge module is resolved the difference between moment of torsion for more described parsing moment of torsion and described simulation, and when described difference is greater than first threshold, judge described torque request system torque parse error, and generate moment of torsion resolve fault signal; Described the second judge module is used for the difference between more described filtering moment of torsion and described analog filtering moment of torsion, and when described difference is greater than Second Threshold, judges described torque request system torque filtering mistake, and generates moment of torsion filtering breakdown signal; Described the 3rd judge module is arbitrated the difference between moment of torsion for more described arbitration moment of torsion and described simulation, and when described difference is greater than the 3rd threshold value, judges described torque request system torque arbitration mistake, and generates moment of torsion arbitration breakdown signal; Described the 4th judge module is used for the difference between more described arbitration moment of torsion and described output torque, and when described difference is greater than the 4th threshold value, judges the output error of described torque request system torque, and generates moment of torsion output breakdown signal.
In some instances, described fault diagnosis module judges the fault type of described torque request system according to breakdown signal type, and described fault type is sent to described torque request system so that described torque request system is adjusted corresponding moment of torsion according to described fault type.
In some instances, described judge module is comparator.
In some instances, described trailer reversing signal is for what obtain according to the intention of travelling of chaufeur, and described trailer reversing signal comprises speed-slackening signal, Acceleration Signal, gear signal.
In some instances, described Vehicular status signal is for what obtain according to the current driving state of described electronlmobil, and described Vehicular status signal comprises the speed of a motor vehicle, motor speed, the maximum tractive torque of motor, motor maximum generation moment of torsion.
In some instances, the maximum tractive torque of described motor and described motor maximum generation moment of torsion are that battery charge state, battery temperature, motor temperature, electric machine control actuator temperature and accessory power according to electronlmobil calculates.
In some instances, described first to fourth threshold value is determined by empirical value.
According to embodiments of the invention, simulation torque generation module obtains correct simulated machine moment of torsion according to trailer reversing signal and Vehicular status signal, and the actual Motor torque that this simulated machine moment of torsion and the actual torque request system by entire car controller are obtained according to trailer reversing signal and Vehicular status signal compares, thereby can judge actual Motor torque that torque request system obtains whether in rational scope, therefore can effectively detect and control due to torque request system hardware problem, software issue, electromagnetic interference, the reasons such as mistake cause vehicle control device to calculate the Motor torque that may make a mistake, avoid vehicle torque out of control, and then can effectively ensure the safety of driving again when can either meet chaufeur demand, thereby prevent from causing the irrational situation of torque request system output torque of entire car controller because torque request system goes wrong, finally reach the object of guarantee driving safety.In addition, this monitored control system is simply effective to the monitoring of the Motor torque of torque request system and mode.
Additional aspect of the present invention and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage accompanying drawing below combination obviously and is easily understood becoming the description of embodiment, wherein:
Fig. 1 is the constructional drawing of torque monitoring system of the electronlmobil of the embodiment of the present invention;
Fig. 2 is the concrete structure schematic diagram of torque monitoring system of the electronlmobil of one embodiment of the invention; And
The simulated machine moment of torsion that the torque monitoring system that Fig. 3 is the electronlmobil of application one embodiment of the invention obtains and the change curve of Motor torque.
The specific embodiment
Describe embodiments of the invention below in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Below by the embodiment being described with reference to the drawings, be exemplary, only for explaining the present invention, and can not be interpreted as limitation of the present invention.
In description of the invention, it will be appreciated that, term " " center ", " longitudinally ", " laterally ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", orientation or the position relationship of indications such as " outward " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, rather than device or the element of indication or hint indication must have specific orientation, with specific orientation structure and operation, therefore can not be interpreted as limitation of the present invention.In addition, term " first ", " second " be only for describing object, and can not be interpreted as indication or hint relative importance.
In description of the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and for example, can be to be fixedly connected with, and can be also to removably connect, or connect integratedly; Can be mechanical connection, can be to be also electrically connected to; Can be to be directly connected, also can indirectly be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, can particular case understand above-mentioned term concrete meaning in the present invention.
Before the torque monitoring system of electronlmobil of describing the embodiment of the present invention, first the structure of electronlmobil simply to be described, electronlmobil mainly comprises: torque request system, electric machine controller, battery management system, Automatic Transmission controller etc.Wherein, torque request system is for detection of trailer reversing signal and Vehicular status signal, and as signals such as acceleration pedal, brake pedal, motor speed, Motor torque, the speed of a motor vehicle, wherein, the torque request system integration is in becoming entire car controller.These signals transmit between each controller by CAN bus.Torque request system can calculate the moment of torsion of electronlmobil under any operating mode by detection above-mentioned parameter and export, be torque request system for detection of and according to trailer reversing signal and Vehicular status signal, calculate Motor torque, and determine maximum tractive torque and the maximum generation moment of torsion of motor at any one time with electric machine controller, battery management system together with Automatic Transmission controller.Torque request system is calculating the output torque of request according to above-mentioned parameter, control the current moment of torsion that can export of motor.Torque request system calculates according to above-mentioned parameter that the process of output torque is important comprises moment of torsion parsing, moment of torsion filtering, moment of torsion arbitration and moment of torsion output etc., therefore torque request system generally includes functional module corresponding to each stage, as shown in Figure 2, the torque request system 200 of entire car controller 300 comprises: moment of torsion parsing module 210, moment of torsion filtration module 220, moment of torsion arbitration modules 230 and moment of torsion output module 240.Moment of torsion parsing module mainly calculates the demand torque of chaufeur by acceleration pedal signal and vehicle speed signal, resolve moment of torsion.Moment of torsion filtration module makes motor from current torque to resolving rising and the decline that moment of torsion before can be level and smooth by algorithm, guarantees that car load there will not be large impact.Moment of torsion arbitration modules limits the demand torque of chaufeur by calculating the maximum tractive torque of arbitrary moment motor and motor maximum generation moment of torsion.And finally by moment of torsion output module, export, as user controls motor.
Below in conjunction with accompanying drawing, describe according to the torque monitoring system of the electronlmobil of the embodiment of the present invention.
As shown in Figure 1, the torque monitoring system 100 of the electronlmobil of the embodiment of the present invention, comprises simulation torque generation module 110, judge module 120 and fault diagnosis module 130.Wherein:
Simulation torque generation module 110 is for obtaining trailer reversing signal, Vehicular status signal and Motor torque from torque request system 200, in one embodiment of the invention, trailer reversing signal is to obtain according to the intention of travelling of chaufeur, trailer reversing signal comprises speed-slackening signal, Acceleration Signal, gear signal, Vehicular status signal is for what obtain according to the current driving state of electronlmobil, and Vehicular status signal comprises the speed of a motor vehicle, motor speed, the maximum tractive torque of motor, motor maximum generation moment of torsion.In addition, simulation torque generation module 110 is also for generating simulated machine moment of torsion according to trailer reversing signal and Vehicular status signal.Judge module 120 is for the difference between Motor torque and simulated machine moment of torsion relatively, and when difference is greater than predetermined threshold, judges torque request system exception, and generates breakdown signal, and for example judge module 120 is comparator.Fault diagnosis module 130 is connected with judge module 120, for after receiving breakdown signal, according to the fault type of breakdown signal judgement torque request system 200, and fault type is sent to torque request system 200 so that torque request system 200 is adjusted Motor torque according to fault type.
According to the torque monitoring system of the electronlmobil of the embodiment of the present invention, simulation torque generation module obtains correct simulated machine moment of torsion according to trailer reversing signal and Vehicular status signal, and this simulated machine moment of torsion and the actual actual Motor torque being obtained according to trailer reversing signal and Vehicular status signal by torque request system are compared, thereby can judge actual Motor torque that torque request system obtains whether in rational scope, therefore can effectively detect and control due to torque request system hardware problem, software issue, electromagnetic interference, the reasons such as mistake cause vehicle control device to calculate the Motor torque that may make a mistake, avoid vehicle torque out of control, and then can effectively ensure the safety of driving again when can either meet chaufeur demand, thereby prevent from causing the irrational situation of torque request system output torque because torque request system goes wrong, finally reach the object of guarantee driving safety.In addition, this monitored control system is simply effective to the monitoring of the Motor torque of torque request system and mode.
In one embodiment of the invention, Motor torque comprises resolves moment of torsion, filtering moment of torsion, arbitration moment of torsion and output torque, and simulated machine moment of torsion comprises simulation parsing moment of torsion, analog filtering moment of torsion and simulation arbitration moment of torsion.
Referring to Fig. 2, for obtaining simulation, resolve moment of torsion, analog filtering moment of torsion and simulation arbitration moment of torsion, simulation torque generation module 110 can further comprise simulation torque parsing module 111, simulation torque filtration module 112 and simulation torque arbitration modules.
Particularly, simulation torque parsing module 111 is for calculating simulation parsing moment of torsion according to trailer reversing signal and Vehicular status signal.For example, simulation torque parsing module 111 goes out analog solution according to calculated signals such as the maximum tractive torque of acceleration pedal (Acceleration Signal), motor speed, the speed of a motor vehicle, motor and analyses moment of torsion.In this example, the maximum tractive torque of motor and motor maximum generation moment of torsion are that battery charge state, battery temperature, motor temperature, electric machine control actuator temperature and the accessory power according to electronlmobil calculates, and can be calculated by torque request system 200.
Simulation torque filtration module 112 is for carrying out parsing moment of torsion smoothing processing to obtain analog filtering moment of torsion.For example, simulation torque filtration module 112, according to the signals such as parsing torque request of the moment of torsion parsing module 210 of acceleration pedal (Acceleration Signal), motor speed and torque request system 200, calculates analog filtering moment of torsion.
Simulation torque arbitration modules 113 is for controlling to obtain simulation arbitration moment of torsion according to the maximum tractive torque of motor and maximum generation moment of torsion to filtering moment of torsion.For example, simulation torque arbitration modules 113 can, according to the signals such as filtering torque request of the maximum tractive torque of motor, motor maximum generation moment of torsion and moment of torsion filtration module 220, calculate simulation arbitration moment of torsion.
It should be noted that, in above-mentioned example, the mode that the account form of moment of torsion, analog filtering moment of torsion and simulation arbitration moment of torsion and parsing moment of torsion, filtering moment of torsion and arbitration moment of torsion that torque request system 200 calculates are resolved in simulation is similar, be not all simulation torque parsing module 111, simulation torque filtration module 112 and simulation torque arbitration modules 113 calculate relatively accurate, it has avoided electromagnetic interference, software and hardware to make mistakes and the possibility of mistake.
Correspondingly, as shown in Figure 2, judge module 120 comprises the first judge module 121, the second judge module 122, the 3rd judge module 123 and the 4th judge module 124.Wherein:
The first judge module 121 is for relatively resolving moment of torsion and the difference between moment of torsion is resolved in simulation, and when difference is greater than first threshold, judges torque request system 200 moment of torsion parse errors, and generates moment of torsion resolve fault signal.In other words, if the first judge module 121 judges that the absolute value of above-mentioned difference is within scope A, allow the moment of torsion parsing module output of torque request system 200 to resolve moment of torsion, otherwise the moment of torsion parsing module parse error of judgement torque request system 200 send moment of torsion resolve fault signal.
The second judge module 122 is for the difference between filtering moment of torsion and analog filtering moment of torsion relatively, and when difference is greater than Second Threshold, judges torque request system 200 moment of torsion filtering mistakes, and generates moment of torsion filtering breakdown signal.If the absolute value that the second judge module 122 judges above-mentioned difference is within scope B, allow the moment of torsion filtration module output filtering moment of torsion of torque request system 200, otherwise the moment of torsion filtration module filtering mistake of judgement torque request system 200, sends moment of torsion filtering breakdown signal.
The 3rd judge module 123 is for relatively arbitrating the difference between moment of torsion and simulation arbitration moment of torsion, and when difference is greater than the 3rd threshold value, judges torque request system 200 moments of torsion arbitration mistakes, and generates moment of torsion arbitration breakdown signal.Generally, if the 3rd judge module 123 judges that the absolute value of above-mentioned difference is within scope C, allow the moment of torsion arbitration modules output arbitration moment of torsion of torque request system 200, otherwise judge that the moment of torsion arbitration modules arbitration of torque request system 200 makes mistakes, and sends moment of torsion arbitration breakdown signal.
The 4th judge module 124 is for relatively arbitrating the difference between moment of torsion and output torque, and when difference is greater than the 4th threshold value, judges the 200 moment of torsion output errors of torque request system, and generates moment of torsion output breakdown signal.For example, if the 4th judge module 124 judges that the absolute value of above-mentioned difference is within scope D, allow the moment of torsion output module output torque of torque request system 200, otherwise moment of torsion output breakdown signal is sent in the moment of torsion output module output error of judgement torque request system 200.In above-mentioned example, first to fourth threshold value is determined by empirical value.
Further, at judge module, bear after breakdown signal, fault diagnosis module 130 judges the fault type of torque request system 200 according to breakdown signal type, and fault type is sent to torque request system 200 so that torque request system 200 is adjusted corresponding moment of torsion according to fault type.For example, after receiving breakdown signal, fault diagnosis module 130 judges the fault type of torque request system 200, so that torque request system 200 reduces Motor torque according to current vehicle condition and fault type, or stop vehicle processing, the thus guarantee driving safety such as travel.
As a concrete example, as shown in Figure 3, transverse axis represents time shaft, the size of longitudinal axis representation parameter numerical value.The parameter of each monitor stages of the torque monitoring system of electronlmobil adopts respectively different curves to represent, wherein, curve 1 represents acceleration pedal (Acceleration Signal), curve 2 represents the parsing moment of torsion of the moment of torsion parsing module 210 of torque request system 200, curve 3 represents the parsing moment of torsion of simulation torque parsing module 111, curve 4 represents the filtering moment of torsion of moment of torsion filtration module 220, the filtering moment of torsion that curve 5 represents in simulation torque filtration module 112.
In conjunction with Fig. 1 and Fig. 2, particularly, first the torque request system 200 of electronlmobil detects the acceleration pedal (representing Acceleration Signal with curve 1 in Fig. 3) of electronlmobil, brake pedal, car load is ready to complete, the speed of a motor vehicle, motor speed, the maximum tractive torque of motor, motor maximum generation moment of torsion, the signals such as gear, according to acceleration pedal, motor speed, the speed of a motor vehicle, the calculated signals such as motor maximum torque go out to resolve moment of torsion (representing with curve 2 in Fig. 3), simulation torque parsing module 111 is also according to acceleration pedal simultaneously, motor speed, the speed of a motor vehicle, the calculated signals such as motor maximum torque go out analog solution and analyse module (representing with curve 3 in Fig. 3).The parsing moment of torsion of simulation parsing module and torque request system 200 reality is compared, obtain a difference.If the absolute value of this difference within scope A, the parsing moment of torsion of output torque parsing module, otherwise send out failure message to fault diagnosis module 130.
Then moment of torsion filtration module 220, according to the parsing torque request of acceleration pedal, motor speed and moment of torsion parsing module 210, calculates the filtering moment of torsion (representing with curve 4 in Fig. 3) of moment of torsion filtration module 220.Simulation torque filtration module 112, also according to acceleration pedal, motor speed and parsing torque request, calculates the analog filtering moment of torsion (representing with curve 5 in Fig. 3) of simulation torque filtration module 112 simultaneously.This analog filtering moment of torsion and filtering moment of torsion are compared, obtain a difference.If the absolute value of this difference within scope B, the filtering moment of torsion of output torque filtration module 220, otherwise send out failure message to fault diagnosis module 130.
Then, moment of torsion arbitration modules 230 according to motor maximum tractive torque, maximum generation moment of torsion, car load is ready to complete and the signals such as filtering torque request of moment of torsion filtration module 220, calculates arbitration moment of torsion.Simultaneously simulation torque arbitration modules 113 also according to motor maximum tractive torque, maximum generation moment of torsion, car load is ready to complete and the signal such as filtering torque request, calculates simulation arbitration moment of torsion.The arbitration moment of torsion of this simulation arbitration moment of torsion and moment of torsion arbitration modules is compared, obtain a difference.If the absolute value of this difference within scope C, the arbitration moment of torsion of output torque arbitration modules 230, otherwise send out failure message to fault diagnosis module 130.
Finally, according to the output torque of the arbitration moment of torsion of moment of torsion arbitration modules 230 and moment of torsion output module 240, compare, obtain a difference.If the absolute value of this difference within scope D, the output torque of output torque output module 240, otherwise send out failure message to fault diagnosis module 130.
When fault diagnosis module 130 receives breakdown signal, according to current vehicle condition and fault type, reduce Motor torque, or stop vehicle processing, the thus guarantee driving safety such as travel.
It should be noted that, above-mentioned torque request system 200 and torque monitoring system 100 can be integrated in entire car controller 300, as shown in Figure 2, can think that torque request system 200 and torque monitoring system 100 are for two functional units of entire car controller 300.But in other example of the present invention, torque monitoring system 100 also can be an independent functional unit, be not integrated in entire car controller 300, embodiments of the invention are to this not restriction.
According to embodiments of the invention, simulation torque generation module obtains correct simulated machine moment of torsion according to trailer reversing signal and Vehicular status signal, and this simulated machine moment of torsion and the actual actual Motor torque being obtained according to trailer reversing signal and Vehicular status signal by torque request system are compared, thereby can judge actual Motor torque that torque request system obtains whether in rational scope, therefore can effectively detect and control due to torque request system hardware problem, software issue, electromagnetic interference, the reasons such as mistake cause vehicle control device to calculate the Motor torque that may make a mistake, avoid vehicle torque out of control, and then can effectively ensure the safety of driving again when can either meet chaufeur demand, thereby prevent from causing the irrational situation of torque request system output torque because torque request system goes wrong, finally reach the object of guarantee driving safety.In addition, this monitored control system is simply effective to the monitoring of the Motor torque of torque request system and mode.
In the description of this specification sheets, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present invention or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, the schematic statement of above-mentioned term is not necessarily referred to identical embodiment or example.And the specific features of description, structure, material or feature can be with suitable mode combinations in any one or more embodiment or example.
Although illustrated and described embodiments of the invention, those having ordinary skill in the art will appreciate that: in the situation that not departing from principle of the present invention and aim, can carry out multiple variation, modification, replacement and modification to these embodiment, scope of the present invention is by claim and be equal to and limit.
Claims (10)
1. the torque monitoring system of an electronlmobil, it is characterized in that, described electronlmobil comprises torque request system, described torque request system for detection of and according to trailer reversing signal and Vehicular status signal, calculate Motor torque, described torque monitoring system comprises:
Simulation torque generation module, described simulation torque generation module is used for obtaining described trailer reversing signal, described Vehicular status signal and described Motor torque from described torque request system, and generates simulated machine moment of torsion according to described trailer reversing signal and described Vehicular status signal;
Judge module, described judge module is used for the difference between more described Motor torque and described simulated machine moment of torsion, and when described difference is greater than predetermined threshold, judges described torque request system exception, and generates breakdown signal;
Fault diagnosis module, described fault diagnosis module is connected with described judge module, for after receiving described breakdown signal, according to described breakdown signal, judge the fault type of described torque request system, and described fault type is sent to described torque request system so that described torque request system is adjusted described Motor torque according to described fault type.
2. the torque monitoring system of electronlmobil according to claim 1, is characterized in that,
Described Motor torque comprises resolves moment of torsion, filtering moment of torsion, arbitration moment of torsion and output torque,
Described simulated machine moment of torsion comprises simulation parsing moment of torsion, analog filtering moment of torsion and simulation arbitration moment of torsion.
3. the torque monitoring system of electronlmobil according to claim 2, is characterized in that, described simulation torque generation module comprises:
Simulation torque parsing module, for calculating simulation parsing moment of torsion according to described trailer reversing signal and Vehicular status signal;
Simulation torque filtration module, for carrying out smoothing processing to obtain analog filtering moment of torsion by described parsing moment of torsion;
Simulation torque arbitration modules, for controlling to obtain simulation arbitration moment of torsion according to the maximum tractive torque of motor and maximum generation moment of torsion to described filtering moment of torsion.
4. according to the torque monitoring system of the electronlmobil described in claim 2 or 3, it is characterized in that, described judge module comprises first to fourth judge module,
Wherein, described the first judge module is resolved the difference between moment of torsion for more described parsing moment of torsion and described simulation, and when described difference is greater than first threshold, judges described torque request system torque parse error, and generates moment of torsion resolve fault signal;
Described the second judge module is used for the difference between more described filtering moment of torsion and described analog filtering moment of torsion, and when described difference is greater than Second Threshold, judges described torque request system torque filtering mistake, and generates moment of torsion filtering breakdown signal;
Described the 3rd judge module is arbitrated the difference between moment of torsion for more described arbitration moment of torsion and described simulation, and when described difference is greater than the 3rd threshold value, judges described torque request system torque arbitration mistake, and generates moment of torsion arbitration breakdown signal;
Described the 4th judge module is used for the difference between more described arbitration moment of torsion and described output torque, and when described difference is greater than the 4th threshold value, judges the output error of described torque request system torque, and generates moment of torsion output breakdown signal.
5. the torque monitoring system of electronlmobil according to claim 4, it is characterized in that, described fault diagnosis module judges the fault type of described torque request system according to breakdown signal type, and described fault type is sent to described torque request system so that described torque request system is adjusted corresponding moment of torsion according to described fault type.
6. the torque monitoring system of electronlmobil according to claim 1, is characterized in that, described judge module is comparator.
7. the torque monitoring system of electronlmobil according to claim 1, is characterized in that, described trailer reversing signal is for what obtain according to the intention of travelling of chaufeur, and described trailer reversing signal comprises speed-slackening signal, Acceleration Signal, gear signal.
8. the torque monitoring system of electronlmobil according to claim 1, it is characterized in that, described Vehicular status signal is for what obtain according to the current driving state of described electronlmobil, and described Vehicular status signal comprises the speed of a motor vehicle, motor speed, the maximum tractive torque of motor, motor maximum generation moment of torsion.
9. the torque monitoring system of electronlmobil according to claim 8, it is characterized in that, the maximum tractive torque of described motor and described motor maximum generation moment of torsion are that battery charge state, battery temperature, motor temperature, electric machine control actuator temperature and the accessory power according to electronlmobil calculates.
10. the torque monitoring system of electronlmobil according to claim 4, is characterized in that, described first to fourth threshold value is determined by empirical value.
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| CN106218443A (en) * | 2016-08-03 | 2016-12-14 | 北京新能源汽车股份有限公司 | A kind of traffic safety control method, device and automobile |
| CN106246197A (en) * | 2016-08-26 | 2016-12-21 | 中国铁建重工集团有限公司 | A kind of cutter head torque method for monitoring abnormality for TBM |
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| CN110356399A (en) * | 2018-04-08 | 2019-10-22 | 上海汽车集团股份有限公司 | A kind of method and apparatus of dynamical system torque monitoring |
| CN110562047A (en) * | 2019-08-14 | 2019-12-13 | 南京理工大学 | Redundancy torque monitoring system based on master-slave hardware framework |
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| CN111942156A (en) * | 2019-05-17 | 2020-11-17 | 北京新能源汽车股份有限公司 | Permanent magnet synchronous motor demagnetization fault detection method and device and automobile |
| CN112026534A (en) * | 2020-09-04 | 2020-12-04 | 郑州日产汽车有限公司 | Pure electric vehicle torque safety control system and method |
| CN112332746A (en) * | 2019-07-31 | 2021-02-05 | 比亚迪股份有限公司 | Motor control system and vehicle |
| CN112964985A (en) * | 2021-02-24 | 2021-06-15 | 重庆长安新能源汽车科技有限公司 | Combined test system and method for electric drive system and power battery system |
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| CN106218443B (en) * | 2016-08-03 | 2018-05-08 | 北京新能源汽车股份有限公司 | A kind of traffic safety control method, device and automobile |
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| CN106246197A (en) * | 2016-08-26 | 2016-12-21 | 中国铁建重工集团有限公司 | A kind of cutter head torque method for monitoring abnormality for TBM |
| CN107914541A (en) * | 2016-10-07 | 2018-04-17 | 现代自动车株式会社 | Integrated control method and system for the motor of electric vehicle |
| GB2559218A (en) * | 2017-08-22 | 2018-08-01 | Daimler Ag | A modular safety software architecture for electrified-powertrain control systems |
| CN110356399A (en) * | 2018-04-08 | 2019-10-22 | 上海汽车集团股份有限公司 | A kind of method and apparatus of dynamical system torque monitoring |
| CN109278569A (en) * | 2018-09-06 | 2019-01-29 | 北京长城华冠汽车科技股份有限公司 | The method for controlling driving speed and vehicle speed control system and vehicle of electric car |
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| CN109624963A (en) * | 2018-12-13 | 2019-04-16 | 上海伊控动力系统有限公司 | A kind of torque based on multi power source system and the reversed monitoring method of gear |
| CN111942156B (en) * | 2019-05-17 | 2022-08-12 | 北京新能源汽车股份有限公司 | Permanent magnet synchronous motor demagnetization fault detection method and device and automobile |
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| CN112332746A (en) * | 2019-07-31 | 2021-02-05 | 比亚迪股份有限公司 | Motor control system and vehicle |
| CN112332746B (en) * | 2019-07-31 | 2022-11-11 | 比亚迪股份有限公司 | Motor control system and vehicle |
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| CN112026534A (en) * | 2020-09-04 | 2020-12-04 | 郑州日产汽车有限公司 | Pure electric vehicle torque safety control system and method |
| CN112964985A (en) * | 2021-02-24 | 2021-06-15 | 重庆长安新能源汽车科技有限公司 | Combined test system and method for electric drive system and power battery system |
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