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《Journal of Highway and Transportation Research and Development》 2003-06
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Studies on Assist Characteristic of Electric Power Steering System

WANG Hao, XU Zhen-lin, ZHANG Hai-hua, SHANG Zhe (School of Electrical and Automation Engineering, Tianjin University,Tianjin300072,China)  
A pinion-type electric power steering (EPS) equipped on a sedan is reached in this paper. A three-freedom dynamic model of this system is created. The variables affect assist character is analysized. The formulas of simplified steering resistance force and the relationship of assist gain and vehicle speed are presented for the first time. Assist character is found based on the parameters of a sedan at last. This assist character is fit to the control rule of the EPS system through analyzing this character. This assist character figure offers reference for system design and control. Furthermore, this research method has generality for assist character of different kinds of vehicles.
【CateGory Index】: U464
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