A Synchronous Control Method for Two-axis Drive Electric Vehicle Hardware-in-the-Loop Test System

Abstract

The invention relates to a synchronization control method for a hardware-in-the-loop test system of a bi-shaft driving electric automobile. Forward simulation synchronization control is employed. A driver operates a simulated driving device, so that the driving device emits control signals which are transmitted to a real-time simulation computer. The real-time simulation computer identifies the intention of the driver according to an entire vehicle and road condition simulation model. Real-time calculation of vehicle dynamics is realized, and front and rear electric drive systems and front and rear load simulation systems in the test system are controlled on a real-time basis. A sampling moment speed pre-estimation module improves the real-time performance of the electric drive systems and the load simulation motor-driven systems, and a speed synchronization control module improves the synchronous response of the rotating speeds of front and rear load simulation motors. The test system has good real-time performance and simulation precision, and provides new means for dynamic simulation test of entire vehicle performance of a bi-shaft driving electric automobile and power system cooperative control. Developing period can be shortened, and real vehicle test risk can be reduced.

Description

technical field [0001] The invention relates to the field of electric vehicle testing, in particular to a synchronous control method for a hardware-in-the-loop testing system of a biaxial drive electric vehicle. Background technique [0002] With the dwindling of oil resources and the increasingly serious problem of urban environmental pollution, the development of new energy vehicles has become a trend. Compared with traditional vehicles, pure electric vehicles have the advantages of cleanliness, no pollution, high energy conversion efficiency, and convenient use and maintenance. At present, pure electric vehicles are still in the primary stage of industrialization, and most of the research on the drive system of pure electric vehicles is single-machine single-axis drive, and relatively mature single-motor drive electric vehicle products have also appeared on the market. Compared with single-axis drive electric vehicles, dual-drive electric vehicles have the advantages of ...

AI Technical Summary

Problems solved by technology

At present, the electric vehicle simulation test system is generally only for single-axis drive electric vehicles. Under certain working conditions, the speed tracking quasi-dynamic simulation test can be realized through reverse simulation and virtual driver model, and the real-time control of the vehicle by the driver cannot be realized. The driving and braking coordination of dual motors and the dynamic characteristics of vehicle handling and power, etc.

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