Citation

Mouri H, Kubota M, Horiguchi N. Rev. Automot. Eng. 2006; 27(1): 101-108.

Copyright

(Copyright © 2006, Society of Automotive Engineers of Japan)

DOI

unavailable

PMID

unavailable

Abstract

This paper describes a new algorithm of an electric power assistant steering system control. A problem found in a vehicle with ordinary steering and the reason why it occurs physically is clarified. It is apparent at low damping of the transfer function of steering angle / steering torque at high speed. This is derived from interference between the steering system and vehicle system. We strictly solved the controller using a simple model, and then in order to maintain the stability of the controller, we approximated a strict solution as a simple controller that is described as a first order non-minimum phase transfer function. Lastly, we validate our result of analysis thorugh a driving test conducted with an actual vehicle.