Design of the Auto Electric Power Steering System Controller

The automobile electric steering system is a servo control system. This paper introduces the basic composition of the electric power steering system, and put forward the reasonable design solutions of the soft hardware and the correction methods of controller, given the main technology index of the controller. According to the performance requirements of cars steering system, make the relevant control strategy of the electric power steering system and through the design of related software and hardware to realize this control strategy and it can control each link of the automobile steering process. In order to verify the feasibility of t he control strategy, comparison experiments are carried out on a vehicle equipped with the developed EPS and the imported EPS, respectively. The results indicate that the developed EPS has similar performance with the imported one. The developed EPS not only works smoothly, but also has proper steering performance, thus can be equipped on passenger cars. (C) 2011 Published by Elsevier Ltd. Selection and/or peer-review under responsibility of Harbin University of Science and Technology