Title :
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
fDate :
Aug. 31 2014-Sept. 3 2014
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;
Conference_Titel :
Transportation Electrification Asia-Pacific (ITEC Asia-Pacific), 2014 IEEE Conference and Expo
Conference_Location :
Beijing
Print_ISBN :
978-1-4799-4240-4
DOI :
10.1109/ITEC-AP.2014.6941170
