Hardware-in-the-loop test system for whole vehicle controller of four-wheel distributed drive electric bus

Abstract

The invention discloses a hardware-in-the-loop test system for a whole vehicle controller of a four-wheel distributed drive electric bus. The system comprises a hardware-in-the-loop test system hardware platform, a vehicle simulation test model, a battery module, a motor module and a driver module. The hardware-in-loop test system hardware platform comprises a vehicle control unit, an upper computer, a real-time processor, an analog input/output board card, a CAN communication board card, a fault injection module, a signal conditioning module and a programmable power supply. The upper computer, the driver module, the vehicle control unit, the battery module, the motor module and the vehicle simulation test model form a closed-loop test system. Development and testing of the vehicle controlsystem are realized, software and hardware systems are tested and verified at the same time, the development cost is reduced, the development time is saved, the safety risk of real vehicle testing isreduced, and the method has the advantages of safety, rapidness, high efficiency and the like.

Description

technical field [0001] The invention relates to the technical field of new energy vehicle control system testing, and more specifically relates to a hardware-in-the-loop testing system for a vehicle controller of a four-wheel distributed drive electric bus. Background technique [0002] Distributed drive electric buses have the advantages of short transmission chain, high transmission efficiency, compact structure, and high utilization rate of interior space. In the method of real vehicle verification, software simulation is affected by the dynamic response characteristics of actuators and external noise interference, so there is a large gap between the actual results and the real vehicle verification period is long, the cost is high, and safety accidents are prone to occur. [0003] Chinese patent: Distributed four-wheel electric drive new energy vehicle experimental system based on hardware in the loop (publication number: 109683579A, patent application number: 20191013236...

AI Technical Summary

Problems solved by technology

[0002] Distributed drive electric bus has the advantages of short transmission chain, high transmission efficiency, compact structure, and high utilization rate of interior space. In the method of real vehicle verification, software simulation is affected by the dynamic response characteristics of actuators and external noise interference, so there is a large gap between the actual results and the real vehicle verification period is long, the cost is high, and safety accidents are prone to occur

[0003] Chinese patent: Distributed four-wheel electric drive new energy vehicle experimental system based on hardware in the loop (publication number: 109683579A, patent application number: 201910132365.2, applicant: Southwest Jiaotong University), the patent designs the drive and dynamometer subsystem, The four subsystems of driving power supply subsystem, energy recovery measurement and consumption subsystem, system network, dynamic modeling and rapid prototyping control subsystem can realize three drive modes and six different combinations of distributed drives, and realize different Research on ride comfort and handling stability performance simulation test and braking energy recovery strategy by the vehicle control strategy in the driving mode, but this method simulates limited vehicle load changes, low flexibility, and high development costs

[0004] Chinese patent: A four-wheel-drive pure electric vehicle hardware-in-the-loop simulation experiment system (publication number: 102442223A, patent application number: 201310079792.1, applicant: Changsha University of Science and Technology), the system includes a power simulation module, a real-time simulation module and man-machine Interface module, power simulation module includes four motor dynamometer subsystems to simulate four wheel subsystems, real-time simulation module includes real-time controller and FPGA module, used for real-time operation of vehicle dynamics model and input and output of vehicle controller signals and signal conditioning, but does not form a closed-loop test system

[0005] Chinese patent: A test system for a distributed drive pure electric vehicle controller (publication number: 102442223A, patent application number: 201520169959.8, applicant: Beijing Shanxin Dingzhong Technology Co., Ltd.), the test system includes a host computer, Simulate steering wheel, simulate accelerator pedal equipment, animation display, CAN card and signal conversion board, simulate signal input through simulate steering wheel, simulate accelerator pedal equipment and animation display, and control the vehicle controller in an intuitive and visual way Open-loop hardware electrical interface test and functional test, but does not form a closed-loop test system

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