The control strategy research of the electric power steering system considering the influence of the road adhesion coefficient

Author

Linfeng Zhao ; Rongyun Zhang ; Jun Yang

Author_Institution

Sch. of Mechanicel & Automotive Eng., Hefei Univ. of Technol., Hefei, China

fYear

2014

fDate

Aug. 31 2014-Sept. 3 2014

Firstpage

1

Lastpage

6

Abstract

In this paper the EPS model and Steering-torque model of the steering pinion were built, and the road adhesion coefficient was estimated by the relationship among the tire slip angle, the tire lateral force and the road adhesion coefficient. Then the control strategy of EPS when in steering or aligning process was proposed, which can be realized by reducing the assistance motor current and using the sliding mode control. Finally, the vehicle test has performed to verified the effectiveness of the control strategy, the results of which indict that it is a good performance of the control strategy.

Keywords

control system synthesis; force control; road traffic control; steering systems; torque control; variable structure systems; EPS model; assistance motor current; electric power steering system; road adhesion coefficient; sliding mode control; steering-torque model; tire lateral force; tire slip angle; vehicle test; Adhesives; Estimation; Process control; Roads; Tires; Torque; Vehicles;

fLanguage

English

Publisher

ieee

Conference_Titel

Transportation Electrification Asia-Pacific (ITEC Asia-Pacific), 2014 IEEE Conference and Expo

Conference_Location

Beijing

Print_ISBN

978-1-4799-4240-4

Type

conf

DOI

10.1109/ITEC-AP.2014.6941170

Filename

6941170