Human-Centered Feed-Forward Control of a Vehicle Steering System Based on a Driver's Path-Following Characteristics
This paper evaluates EPS control strategies for improving vehicle handling and steering feel during high speed avoidance maneuver. Theoretical analysis of frequency response of steering angle and vehicle lateral acceleration relative to steering torque input is performed. Closed-loop simulation studies are also conducted by adopting a driver model to describe the human steering behavior. Based on the study, EPS control strategies of steering torque assistance and damping compensation are investigated. The results show the effectiveness of EPS to improve vehicle responsiveness and stability, to reduce steering effort, and to realize comfortable steering feel for high speed avoidance maneuver.