Designing an EPS controller is a difficult problem. Generation of assist torque, system stability, vibration reduction, return-to-center control and transferring necessary road information to driver should be considered to design an EPS controller. To develop an EPS controller, the HILS (Hardware in the Loop Simulation) system is needed. It is much reliable than software simulation and also can replace real vehicle test in special condition.
To develop a reliable EPS HILS system, two things should be considered. 1)real vehicle and an EPS HILS system should have same steering feel and 2)the road disturbance torque realized in the HILS system should be same as that of real vehicle test. We suggests a new method and ideas for developing a reliable EPS HILS system.

MSC Lab.4F(#3434~#3446) ID B/D(N8), School of Mechanical Aerospace & System
Engineering : Division of Mechanical Engineering, KAIST, 373-1, Guseong-dong, Yuseong-gu, Daejoen, Korea, 305-701.
Tel:+82-42-350-3252 l Fax:+82-42-350-5201