A novel control method for electric power steering system based on dead-zone inverse transforming compensation in a four-in-wheel-motor drive electric vehicle

Abstract

Abstract:Since the four-in-wheel-motors drive (FWMD) electric vehicle (EV) has a four-wheel independent steering, this paper presents a novel control method for an electric power steering system with a dead-zone execution mechanism. A mathematical model was derived for execution mechanisms from the empirical data. A 'dead-zone inverse transforming compensation' was designed to eliminate ill effects caused by dead-zone. The experiment in a real car environment proves the proposed method.Keywords: EV; electric power steering system; steering control; dead-zone inverse transforming compensation.Reference to this paper should be made as follows: Liang, S., Qi, Z.T., Dong, Z., Qiu, H. and Hu, S. (2013) 'A novel control method for electric power steering system based on dead-zone inverse transforming compensation in a four-in-wheel-motor drive electric vehicle', Int. J. Biomechatronics and Biomedical Robotics, Vol. 2, Nos. 2/3/4, pp.81-86. This paper is a revised and expanded version of a paper entitled 'A novel control method for electric power steering system based on dead-zone inverse transforming compensation in a four-in-wheel-motor drive electric vehicle' presented at