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Automotive Engineering ›› 2022, Vol. 44 ›› Issue (3): 426-433.doi: 10.19562/j.chinasae.qcgc.2022.03.015

Special Issue: 新能源汽车技术-电驱动&能量管理2022年

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Research on Compensation Algorithm for Load Simulation Accuracy of Electric Drive System Test Bench

Guanfeng Wang,Qiang Song(),Lukai Zhao   

  1. 1.Beijing Institute of Technology,National Engineering Laboratory for Electric Vehicles,Beijing  100081
    2.Collaborative Innovation Center for Electric Vehicles in Beijing,Beijing  100081
  • Received:2021-10-18 Revised:2021-11-16 Online:2022-03-25 Published:2022-03-25
  • Contact: Qiang Song E-mail:songqiang@bit.edu.cn

Abstract:

In order to ensure the accuracy of road load simulation and realize the hardware-in-the-loop test of electric drive system, a dynamic compensation algorithm of bench test is proposed in this paper. Firstly, based on the analysis on load simulation problem, the test bench inverse model algorithm is adopted. Then, for improving torque dynamic response, Kalman filter is adopted to achieve accurate compensation of model errors. Finally, on the basis of the analysis on bench accuracy, accuracy coupling compensation algorithm is put forward and verified by bench test. The results show that compensation algorithm can well achieve speed following in cycle conditions and enhance the accuracy of bench test in starting condition.

Key words: electric vehicles, electric drive system, load simulation, bench control, compensation algorithm