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Automotive Engineering ›› 2019, Vol. 41 ›› Issue (4): 432-439.doi: 10.19562/j.chinasae.qcgc.2019.04.011

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A Simulation Study on Power Assisting Characteristics of Full Range Vehicle Mass EPS System for Commercial Vehicles

Li Yaohua, Feng Qianlong, Zhang Yangsen, Nan Youfei & Ou Pengfei   

  1. School of Automobile, Chang'an University, Xi'an 710064
  • Online:2019-04-25 Published:2019-05-20

Abstract: In order to improve the steering performance of commercial vehicles with big change of load, the electric power steering (EPS) system with full range vehicle mass power assisting characteristics is proposed. Its assisting characteristics and control strategy are studied. Through co-simulation of TruckSim and Simulink, the influence of full range vehicle mass EPS system, traditional single mass EPS system and EPS-free system on vehicle performance are compared. Simulation results show that the EPS system with full range vehicle mass assisting characteristics can provide better steering lightness and handling stability for commercial vehicles. It can reduce the impact of vehicle mass on the steering performance, so as to bring drivers clearer sense of road.

Key words: full range vehicle mass assisting characteristics, EPS system, control strategy, co-simulation