CN109613911B - Vehicle testing system and method - Google Patents

Vehicle testing system and method Download PDF

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Publication number
CN109613911B
CN109613911B CN201811535455.8A CN201811535455A CN109613911B CN 109613911 B CN109613911 B CN 109613911B CN 201811535455 A CN201811535455 A CN 201811535455A CN 109613911 B CN109613911 B CN 109613911B
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vehicle
controller
gear
configuration structure
fault
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CN109613911A (en
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张富丽
李惠惠
郭亚男
彭珊珊
邵桂欣
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Beijing Electric Vehicle Co Ltd
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Beijing Electric Vehicle Co Ltd
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    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B23/00Testing or monitoring of control systems or parts thereof
    • G05B23/02Electric testing or monitoring
    • G05B23/0205Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
    • G05B23/0208Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the configuration of the monitoring system
    • G05B23/0213Modular or universal configuration of the monitoring system, e.g. monitoring system having modules that may be combined to build monitoring program; monitoring system that can be applied to legacy systems; adaptable monitoring system; using different communication protocols

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)

Abstract

The invention provides a vehicle testing system and method, and relates to the technical field of controller testing. The vehicle testing system includes: the vehicle control unit configuration structure comprises vehicle control unit hardware and a first connection interface; the gear controller configuration structure comprises gear controller hardware, a gear shifting knob and a second connecting interface; and the joint debugging test equipment comprises a third connecting interface which is respectively connected with the first connecting interface and the second connecting interface, and test parameters are input into the whole vehicle controller configuration structure and the gear controller configuration structure by the joint debugging test equipment through the third connecting interface. According to the scheme, the test time of the vehicle controller and the gear shifting controller is advanced, and the vehicle controller and the gear shifting controller can be jointly tested as long as the vehicle controller and the gear shifting controller are developed, so that the condition that whether other vehicle parts have a sample vehicle integration state or not is not concerned. The system can be reused on a plurality of in-process vehicle types, and after the system cost is balanced, the research and development cost of a single vehicle type can be reduced.

Description

Vehicle testing system and method
Technical Field
The invention relates to the technical field of controller testing, in particular to a vehicle testing system and a vehicle testing method.
Background
With the development of science and technology, automobiles become indispensable transportation means in daily life of people; because fuel oil is used as an unrenewable resource, more and more automobile manufacturers gradually focus on research and production of pure electric vehicles in order to reduce the usage amount of the fuel oil.
At present, the industry of pure electric vehicles is in a rapid development stage, and the strategy of the vehicle control unit serving as the brain of the pure electric vehicle is changed increasingly frequently. The gear control strategy is used as a medium between a driver and a vehicle, is undoubtedly one of core parts of a whole vehicle control strategy, is changed most frequently, and needs to carry out combined debugging and testing work on a whole vehicle controller and a gear controller after the change, but the work is usually carried out after a sample vehicle is manufactured. Once any problems are discovered during the debugging and testing process, such as the mismatch between the sample development and the demand of the supplier, and the adjustment of the development scheme required by the supplier, the time to market of the whole product is delayed from the expected time. Missing the best time to market means missing earlier opportunities to lead consumption trends and develop consumer usage habits, directly related to the overall benefits of the whole car plant.
Disclosure of Invention
The embodiment of the invention provides a vehicle testing system and a vehicle testing method, which are used for solving the problem of how to finish the combined test of a whole vehicle controller and a gear controller before the sample vehicle integration work.
In order to solve the technical problem, the embodiment of the invention adopts the following technical scheme:
a vehicle testing system, comprising:
the vehicle control unit configuration structure comprises vehicle control unit hardware and a first connection interface connected with the vehicle control unit hardware;
the gear controller configuration structure comprises gear controller hardware, and a gear shifting knob and a second connection interface which are respectively connected with the gear controller hardware;
the combined debugging test equipment comprises a third connecting interface which is respectively connected with the first connecting interface and the second connecting interface, and is used for inputting test parameters to the vehicle controller configuration structure and the gear controller configuration structure through the third connecting interface.
Further, the third connection interface includes:
the device comprises a power supply interface, an analog input/output interface, a digital input/output interface and a CAN bus interface.
Further, the joint debugging test device further includes:
the system comprises a controller power supply module, an analog input/output module, a digital input/output module and a gateway module;
the controller power supply module is connected with the power supply interface, the analog input/output module is connected with the analog input/output interface, the digital input/output module is connected with the digital input/output interface, and the gateway module is connected with the CAN bus interface.
Further, the first connection interface and the second connection interface respectively include a corresponding one of the third connection interfaces: the device comprises a power supply interface, an analog input/output interface, a digital input/output interface and a CAN bus interface.
A vehicle testing method is applied to the vehicle testing system, and comprises the following steps:
connecting the third connection interface with the first connection interface and the second connection interface respectively;
according to the parameter information of the vehicle to be tested, constructing an operation model of the vehicle to be tested;
and inputting the operation model into the combined debugging and testing equipment, and executing the test of the vehicle controller and the gear controller of the vehicle to be tested.
Further, the constructing the operation model of the vehicle to be tested comprises:
and building a vehicle dynamic model, a motor model and a battery model.
Further, the vehicle dynamics model includes a motor driving force, and the motor driving force is calculated by using the following formula:
F=F1+F2+F3+F4+F5+m×a;
wherein F is motor driving force, F1As wind resistance, F2As slope resistance, F3To rolling resistance, F4For braking resistance, F5The mechanical friction is m, the vehicle weight and the vehicle acceleration are a.
Further, the motor model includes a bus voltage, where the bus voltage is calculated by using the following formula:
V=V1×e-t/R×C
wherein V is the bus voltage, V1The voltage of the battery, R is a pre-charging resistor, C is a pre-charging capacitor, and t is the pre-charging time.
Further, the building of the battery model comprises:
and constructing the battery model according to the lowest temperature output, the highest temperature output, the lowest voltage output, the highest voltage output and the total voltage of the battery pack of the single battery.
Further, after the operation model of the vehicle to be tested is constructed according to the parameter information of the vehicle to be tested, the method further comprises the following steps:
and the whole vehicle controller configuration structure and the gear controller configuration structure are respectively electrified to perform fault test on the whole vehicle controller configuration structure and the gear controller configuration structure.
Further, the performing the fault test on the vehicle controller configuration structure and the gear controller configuration structure includes:
carrying out fault diagnosis on the configuration structure of the whole vehicle controller and the configuration structure of the gear controller;
restarting the combined debugging test equipment, and reading a gear message;
and converting gears, closing the combined debugging test equipment, and reading gear messages at the closing moment.
Further, the performing fault diagnosis on the vehicle controller configuration structure and the gear controller configuration structure includes:
reading fault prompt information of the configuration structure of the whole vehicle controller by using a diagnosis tool;
modifying model parameters according to the fault prompt information until the fault of the configuration structure of the whole vehicle controller is eliminated;
after the fault of the configuration structure of the whole vehicle controller is eliminated, reading fault information of the configuration structure of the gear controller by using a professional tool;
and adjusting according to the fault information until the fault of the configuration structure of the gear controller is eliminated.
Further, the inputting the operation model into the joint debugging test equipment, and executing the test of the vehicle controller and the gear controller of the vehicle to be tested includes:
and inputting the operation model into the combined debugging and testing equipment, controlling the vehicle controller configuration structure and the gear controller configuration structure to respectively operate in a fault-free driving mode, a quick charging mode, a slow charging mode, a vehicle low-voltage fault mode, a limping fault mode, a power-limiting fault mode and a charging low-voltage fault mode, and executing the test of the vehicle controller and the gear controller to be tested.
The invention has the beneficial effects that:
according to the scheme, the time of the vehicle controller and the gear shifting controller of the vehicle for combined debugging and testing is advanced by arranging the combined debugging and testing device, the vehicle controller and the gear shifting controller can be subjected to combined debugging and testing work as long as the development of the vehicle controller and the gear shifting controller is completed, and whether other vehicle parts have a sample vehicle integration state or not is not required to be concerned. The system can be reused on a plurality of in-process vehicle types, and after the system cost is balanced, the research and development cost of a single vehicle type can be reduced.
Drawings
FIG. 1 is a schematic diagram of a vehicle testing system according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a joint debugging test apparatus according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a pre-charge circuit according to an embodiment of the present invention;
FIG. 4 is a flow chart illustrating a vehicle testing method according to an embodiment of the present invention.
Description of reference numerals:
100-vehicle controller configuration structure; 110-vehicle controller hardware; 120-a first connection interface; 200-gear controller configuration; 210-gear controller hardware; 220-a shift knob; 230-a second connection interface; 300-joint debugging test equipment; 310-a third connection interface; 311-a power supply interface; 312-analog input output interface; 313-digital input output interface; 314-CAN bus interface; 320-a controller power supply module; 330-analog input and output module; 340-digital input output module; 350-gateway module.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
The invention provides a vehicle testing system and a vehicle testing method, aiming at the problem of how to finish the combined test of a whole vehicle controller and a gear controller before the sample vehicle integration work.
As shown in fig. 1, an embodiment of the present invention provides a vehicle testing system, including:
the vehicle control unit configuration structure 100 includes vehicle control unit hardware 110 and a first connection interface 120 connected to the vehicle control unit hardware 110;
the gear controller configuration structure 200 comprises gear controller hardware 210, and a gear shifting knob 220 and a second connecting interface 230 which are respectively connected with the gear controller hardware 210;
the joint debugging test apparatus 300 includes a third connection interface 310 for connecting with the first connection interface 120 and the second connection interface 230, respectively, and the joint debugging test apparatus 300 is configured to input test parameters to the vehicle control unit configuration structure 100 and the gear controller configuration structure 200 through the third connection interface 310.
It should be noted that, by setting the combined debugging test device 300, the time for the combined debugging test of the vehicle controller and the shift controller of the vehicle is advanced, and as long as the development of the vehicle controller and the shift controller is completed, the combined debugging test can be performed on the vehicle controller and the shift controller, and it is not necessary to care whether other vehicle parts have a sample vehicle integration state. The system can be reused on a plurality of in-process vehicle types, and after the system cost is balanced, the research and development cost of a single vehicle type can be reduced.
Specifically, as shown in fig. 2, the third connection interface 310 includes:
a power supply interface 311, an analog input output interface 312, a digital input output interface 313, and a CAN bus interface 314.
The joint debugging test apparatus 300 further includes:
a controller power supply module 320, an analog input output module 330, a digital input output module 340 and a gateway module 350;
the controller power supply module 320 is connected to the power supply interface 311, the analog input/output module 330 is connected to the analog input/output interface 312, the digital input/output module 340 is connected to the digital input/output interface 313, and the gateway module 350 is connected to the CAN bus interface 314.
Specifically, the first connection interface 120 and the second connection interface 230 respectively include, corresponding to the third connection interface 310: the device comprises a power supply interface, an analog input/output interface, a digital input/output interface and a CAN bus interface.
It should be noted that a system formed by the combined debugging test equipment 300, the vehicle controller configuration structure 100, and the gear controller configuration structure 200 is equivalent to a virtual electric vehicle, and the virtual electric vehicle can complete the test operation on the vehicle controller configuration structure 100 and the gear controller configuration structure.
As shown in fig. 4, an embodiment of the present invention further provides a vehicle testing method, where the method includes:
step 11, connecting the third connection interface 310 with the first connection interface 120 and the second connection interface 230 respectively;
it should be noted that, after the above interfaces are connected, the vehicle controller configuration structure 100 and the gear controller configuration structure 200 may obtain a power supply from the joint debugging test apparatus 300, so as to implement transmission of control signals on a bus and transmission of other parameter signals.
Step 12, constructing an operation model of the vehicle to be tested according to the parameter information of the vehicle to be tested;
it should be noted that the parameter information of the vehicle to be tested includes, but is not limited to, a vehicle weight, a maximum vehicle speed, a full-electric endurance mileage, a battery available capacity, a battery voltage, a battery cell voltage under-voltage value, a cell weight, a motor power, a motor maximum rotation speed, a motor maximum torque, a pre-charge resistor, and a pre-charge capacitance value.
The building of the running model of the vehicle to be tested comprises the following steps:
and building a vehicle dynamic model, a motor model and a battery model.
Specifically, the gear controller strategy does not need to consider the forces in the transverse direction and the up-down direction of the vehicle, and only the following steps are considered in the scheme: motor driving force, wind resistance, gradient resistance, rolling resistance, braking resistance and mechanical friction. The vehicle dynamics model comprises motor driving force, and the calculation of the motor driving force adopts the following formula:
F=F1+F2+F3+F4+F5+m×a;
wherein F is motor driving force, F1As wind resistance, F2As slope resistance, F3To rolling resistance, F4For braking resistance, F5M is the vehicle weight, a is the vehicle acceleration.
Specifically, in the motor model, it is only necessary to ensure that information interaction with the vehicle control unit is correct and reasonable, and therefore only the establishment of the bus voltage and the motor and motor controller body model are considered.
The motor model includes a bus voltage, as shown in the pre-charge circuit of fig. 3, where the bus voltage is calculated by the following formula:
V=V1×e-t/R×C
wherein V is the bus voltage, V1The voltage of the battery, R is a pre-charging resistor, C is a pre-charging capacitor, and t is the pre-charging time.
Further, the motor and motor controller body model needs to consider the reception of the required torque, the output of the motor speed and torque, and the output of the motor rotation direction.
Specifically, the building of the battery model comprises the following steps:
and constructing the battery model according to the lowest temperature output, the highest temperature output, the lowest voltage output, the highest voltage output and the total voltage of the battery pack of the single battery.
In order to simulate the specific situation of a vehicle in practical use, it is necessary to consider the influence of temperature on the battery output when constructing a battery model.
And step 13, inputting the operation model into the combined debugging and testing device 300, and executing the test of the vehicle controller and the gear controller of the vehicle to be tested.
Before the test of the vehicle controller and the gear controller, it is necessary to detect a failure of the vehicle controller and the gear controller, so as to ensure that the controller itself has no problem. Therefore, after step 12, the method further comprises:
the vehicle control unit configuration structure 100 and the gear controller configuration structure 200 are respectively powered on, and fault testing is performed on the vehicle control unit configuration structure 100 and the gear controller configuration structure 200.
Specifically, the performing the fault test on the vehicle controller configuration structure 100 and the gear controller configuration structure 200 includes:
performing fault diagnosis on the vehicle controller configuration structure 100 and the gear controller configuration structure 200;
restarting the combined debugging test equipment 300, and reading a gear message;
and switching gears, closing the combined debugging and testing equipment 300, and reading gear messages at the closing moment.
Specifically, the performing fault diagnosis on the vehicle controller configuration structure 100 and the gear controller configuration structure 200 includes:
reading the fault prompt information of the vehicle control unit configuration structure 100 by using a diagnosis tool;
modifying model parameters according to the fault prompt information until the fault of the vehicle controller configuration structure 100 is eliminated;
after the fault of the vehicle control unit configuration structure 100 is eliminated, reading fault information of the gear controller configuration structure 200 by using a professional tool;
and adjusting according to the fault information until the fault of the gear controller configuration structure 200 is eliminated.
It should be noted that step 13 includes:
and inputting the operation model into the combined debugging and testing equipment 300, and executing the test of the vehicle controller and the gear controller to be tested.
In order to ensure the coverage rate of the test, the vehicle controller configuration structure 100 and the gear controller configuration structure 200 need to be controlled to operate in a non-fault driving mode, a fast charging mode, a slow charging mode, a vehicle low-voltage fault mode, a limp fault mode, a power-limiting fault mode and a charging low-voltage fault mode, respectively.
Specifically, the test methods for each mode are as follows:
the testing method comprises the following steps of firstly, normally shifting gears in a fault-free driving state:
1. starting the vehicle testing system, testing whether a gear is a parking gear, stepping on a virtual brake, switching a forward gear and a backward gear by using a gear shifting knob 220, successfully switching, releasing the brake, and outputting corresponding forward torque and reverse torque by using a motor model in the combined debugging and testing equipment 300;
2. under the condition of vehicle speed, the forward gear and the moving gear can be successfully switched by using the gear shifting knob 220;
3. the vehicle testing system is powered off, whether the gear is the parking gear or not is tested, and the hardware 110 of the whole vehicle controller has no torque requirement.
Secondly, under the slow charging and fast charging states, the vehicle key is turned on or off, and the parking gear is required to be kept, and the test method comprises the following steps:
1. in a slow charging state, a virtual vehicle key is turned off, whether a gear is a parking gear or not is tested, a virtual brake is stepped on, a power gear is switched by a gear shifting knob 220, an actual gear is tested to be kept in the parking gear, and no torque requirement is sent by the hardware 110 of the whole vehicle controller;
2. in a slow charging state, a virtual vehicle key is turned on, whether a gear is a parking gear or not is tested, a virtual brake is stepped on, a power gear is switched by a gear shifting knob 220, an actual gear is tested to be kept in the parking gear, and no torque requirement is sent by the hardware 110 of the whole vehicle controller;
3. in a quick charging state, a virtual vehicle key is turned off, whether a gear is a parking gear or not is tested, a virtual brake is stepped on, a power gear is switched by a gear shifting knob 220, an actual gear is tested to be kept in the parking gear, and no torque requirement is sent by the hardware 110 of the whole vehicle controller;
4. in the fast charging state, a virtual vehicle key is turned on, whether a gear is a parking gear is tested, a virtual brake is stepped on, a gear shifting knob 220 is used for switching a power gear to test an actual gear to keep the parking gear, and the hardware 110 of the whole vehicle controller has no torque requirement.
Thirdly, in a high-voltage power-off state and a high-voltage-incapable state of driving, the parking gear is kept, and the test method comprises the following steps:
1. when a virtual vehicle key is turned on, the vehicle has a failure that high voltage cannot be applied, the motor does not work, a virtual brake is stepped on, a power gear shift knob 220 is used for switching a power gear to test an actual gear to keep a parking gear, and no torque requirement is sent by the hardware 110 of the whole vehicle controller;
2. the virtual car key is opened, and the vehicle does not have the trouble, steps on the brake, shifts to the fender that advances with shift knob 220, and the pine brake, virtual throttle are 100%, and the speed of a vehicle promotes the highest speed of a vehicle, injects into high-pressure trouble under the vehicle, high pressure under the virtual vehicle, and the motor stop work keeps off the position and switches to the parking fender position automatically, and whole vehicle controller hardware 110 does not have the moment of torsion demand and sends.
Fourthly, when the vehicle is in a limp fault state during driving, the normal gear shifting is successful, and the test method comprises the following steps:
the virtual motor has corresponding forward and reverse torque output when the virtual motor is released after the virtual motor key is opened and the vehicle has a limping fault, the virtual brake is stepped on, the forward gear and the reverse gear are switched, the switching is successful, and the brake is released.
Fifthly, a fault state of limited power during driving and a successful normal gear shifting are realized, and the test method comprises the following steps:
the virtual vehicle key is turned on, the vehicle has a limited power failure, the virtual brake is stepped on, the forward gear and the backward gear are switched, the switching is successful, the brake is released, and the motor model in the combined debugging test equipment 300 has corresponding forward torque output and reverse torque output.
Sixthly, high-voltage fault is caused when charging is performed at high speed and low speed, a vehicle key is turned on or off, and a parking gear needs to be kept, wherein the test method comprises the following steps:
1. inserting virtual slow charging and robbing, entering a slow charging state, turning on a virtual vehicle key, testing whether a gear is a parking gear, stepping on a virtual brake, switching a power gear by using a gear shifting knob 220, and keeping the parking gear when the testing gear is switched, wherein the hardware 110 of the whole vehicle controller has no torque requirement;
injecting a high-voltage fault under the vehicle, stopping slow charging, stepping on a virtual brake, switching a power gear test gear by using a gear shifting knob 220 to keep a parking gear, and sending out no torque requirement on the hardware 110 of the whole vehicle controller.
2. Inserting virtual quick charging and robbing, entering a quick charging state, turning on a virtual vehicle key, testing whether a gear is a parking gear, stepping on a virtual brake, switching a power gear by using a gear shifting knob 220, and keeping the parking gear in the testing gear, wherein the hardware 110 of the whole vehicle controller has no torque requirement;
and injecting a high-voltage fault under the vehicle, stopping quick charging, stepping on a virtual brake, switching a power gear test gear to keep a parking gear, and sending out the hardware 110 of the whole vehicle controller without torque demand.
While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the following claims.

Claims (5)

1. A vehicle testing method is applied to a vehicle testing system and is characterized in that,
the vehicle testing system includes:
the vehicle control unit configuration structure comprises vehicle control unit hardware and a first connection interface connected with the vehicle control unit hardware;
the gear controller configuration structure comprises gear controller hardware, and a gear shifting knob and a second connection interface which are respectively connected with the gear controller hardware;
the combined debugging test equipment comprises a third connection interface which is respectively connected with the first connection interface and the second connection interface, and is used for inputting test parameters to the vehicle controller configuration structure and the gear controller configuration structure through the third connection interface;
the third connection interface includes:
the system comprises a power supply interface, an analog input/output interface, a digital input/output interface and a CAN bus interface;
the joint debugging test device further comprises:
the system comprises a controller power supply module, an analog input/output module, a digital input/output module and a gateway module;
the controller power supply module is connected with the power supply interface, the analog input/output module is connected with the analog input/output interface, the digital input/output module is connected with the digital input/output interface, and the gateway module is connected with the CAN bus interface;
the first connection interface and the second connection interface respectively include a third connection interface corresponding to the first connection interface: the system comprises a power supply interface, an analog input/output interface, a digital input/output interface and a CAN bus interface;
the vehicle testing method comprises the following steps:
connecting the third connection interface with the first connection interface and the second connection interface respectively;
according to the parameter information of the vehicle to be tested, constructing an operation model of the vehicle to be tested;
inputting the running model into the combined debugging and testing equipment, and executing the test of the vehicle controller and the gear controller of the vehicle to be tested;
inputting the operation model into the combined debugging and testing equipment, and executing the test of the vehicle controller and the gear controller of the vehicle to be tested, wherein the test comprises the following steps:
inputting the operation model into the combined debugging and testing equipment, controlling the configuration structure of the vehicle controller and the configuration structure of the gear controller to operate in a fault-free driving mode, a quick charging mode, a slow charging mode, a vehicle low-voltage fault mode, a limping fault mode, a power-limiting fault mode and a charging low-voltage fault mode respectively, and executing the test on the vehicle controller and the gear controller of the vehicle to be tested;
after the operation model of the vehicle to be tested is constructed according to the parameter information of the vehicle to be tested, the method further comprises the following steps:
the whole vehicle controller configuration structure and the gear controller configuration structure are respectively electrified to perform fault test on the whole vehicle controller configuration structure and the gear controller configuration structure;
wherein, carrying out fault test on the vehicle control unit configuration structure and the gear controller configuration structure comprises:
carrying out fault diagnosis on the configuration structure of the whole vehicle controller and the configuration structure of the gear controller;
restarting the combined debugging test equipment, and reading a gear message;
converting gears, closing the combined debugging test equipment, and reading a gear message at the closing moment;
wherein, carry out fault diagnosis to vehicle control unit configuration structure and gear controller configuration structure, include:
reading fault prompt information of the configuration structure of the whole vehicle controller by using a diagnosis tool;
modifying model parameters according to the fault prompt information until the fault of the configuration structure of the whole vehicle controller is eliminated;
after the fault of the configuration structure of the whole vehicle controller is eliminated, reading fault information of the configuration structure of the gear controller by using a professional tool;
and adjusting according to the fault information until the fault of the configuration structure of the gear controller is eliminated.
2. The vehicle testing method of claim 1, wherein said constructing a running model of said vehicle under test comprises:
and building a vehicle dynamic model, a motor model and a battery model.
3. The vehicle testing method according to claim 2, wherein the vehicle dynamics model includes a motor driving force, and the motor driving force is calculated using the following formula:
F=F1+F2+F3+F4+F5+m×a;
wherein F is motor driving force, F1As wind resistance, F2As slope resistance, F3To rolling resistance, F4For braking resistance, F5The mechanical friction is m, the vehicle weight and the vehicle acceleration are a.
4. The vehicle testing method of claim 2, wherein the motor model includes a bus voltage, wherein the bus voltage is calculated using the following equation:
V=V1×e-t/R×C
wherein V is the bus voltage, V1The voltage of the battery, R is a pre-charging resistor, C is a pre-charging capacitor, and t is the pre-charging time.
5. The vehicle testing method according to claim 2, wherein the building of the battery model comprises:
and constructing the battery model according to the lowest temperature output, the highest temperature output, the lowest voltage output, the highest voltage output and the total voltage of the battery pack of the single battery.
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