Hardware-in-the-loop test system for whole vehicle controller for electric vehicle and test method

Abstract

The invention discloses a hardware-in-the-loop test system for a whole vehicle controller for an electric vehicle and a test method. The hardware-in-the-loop test system comprises a whole electric vehicle controller, a fault injection hardware unit, an SCALEXIO, and a vehicle simulating module, a vehicle driving animation simulating module and a vehicle state operating and monitoring module in a computer. Connection and communication among the SCALEXIO, the fault injection hardware unit and the whole electric vehicle controller is achieved through a wire harness, and connection and communication between the SCALEXIO and the computer is achieved through a network line; through the corresponding SCALEXIO software in the computer, SCALEXIO channel selection is achieved, and communications of a vehicle simulating model, vehicle driving animation and vehicle state operation and monitoring interact in the computer. The hardware-in-the-loop test system can effectively save the development time and reduce the development cost of the whole vehicle controller, can achieve performance testing on the whole vehicle controller under the limit driving condition of the vehicle, can achieve systematic, integrated and automatic testing on the whole vehicle controller and generate a test report, effectively reduces the testing cost and improves the testing efficiency.

Description

technical field [0001] The invention relates to the technical field of automobile testing, in particular to a hardware-in-the-loop testing system and testing method for a vehicle controller for an electric vehicle. Background technique [0002] With the increasingly serious environmental pollution and energy shortage brought by traditional fuel vehicles, electric vehicles have become the key to solving these two problems. There is a big difference between electric vehicles and traditional fuel vehicles, especially in the vehicle controller. The vehicle controller is the control core of the electric vehicle, and the vehicle controller coordinates and controls the main components of the vehicle. [0003] The vehicle controller receives the signal collected by the sensor, calculates the appropriate control command through its own control strategy and control algorithm, and sends the control command to the actuator. Its performance directly affects the performance of the vehicle...

AI Technical Summary

Problems solved by technology

[0004] At present, there are many types of electric vehicle controllers in the market, but it is difficult to evaluate the performance of the controllers. Only using a real vehicle to test the vehicle controller is not only low cost performance, but also limited in test conditions, especially not Test the performance of the vehicle controller under extreme driving conditions

Moreover, the control strategies in the vehicle controller continue to increase, and the traditional detection methods can no longer meet the test accuracy and requirements.

[0005] Most of the existing vehicle controller tests focus on model-in-the-loop and software-in-the-loop. The test accuracy of these two stages cannot meet the requirements of the real vehicle test. In the real vehicle test, not only the driver but also the test engineer are required. At the same time, on-site test experiments are also required. The test time is easily affected by the environment and roads, the test efficiency is low, and the test cost is high. If there is a problem with the vehicle controller during the actual vehicle test stage, it is necessary to return to the previous development stage for repair. , which not only prolongs the development time of the vehicle controller, but also increases the development cost

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