Title: Hydraulic retarder torque control for heavy duty vehicle longitudinal control

Authors: Chaoxian Wu; Xuexun Guo; Bo Yang; Xiaofei Pei; Sijing Guo

Addresses: Hubei Key Laboratory of Advanced Technology for Automotive Components, Automobile Engineering Institute, Wuhan University of Technology, Wuhan, 430000, China ' Hubei Collaborative Innovation Center for Automotive Components Technology, Wuhan University of Technology, Wuhan, 430000, China ' Hubei Key Laboratory of Advanced Technology for Automotive Components, Automobile Engineering Institute, Wuhan University of Technology, Wuhan, 430000, China ' Hubei Collaborative Innovation Center for Automotive Components Technology, Wuhan University of Technology, Wuhan, 430000, China ' Hubei Key Laboratory of Advanced Technology for Automotive Components, Automobile Engineering Institute, Wuhan University of Technology, Wuhan, 430000, China

Abstract: This paper studies the hydraulic retarder torque control strategies for heavy duty vehicle longitudinal control to reduce the abrasion of the friction brake. A hydraulic retarder whose oil volume rate is controlled by a pneumatic system is modelled. A hierarchical controller is developed for longitudinal control. In the upper controller, the target total brake force is calculated and then distributed on the friction brake and the retarder. In the lower controller, two retarder torque control strategies, PID control and mixed PID and sliding mode control, are employed and compared. Simulations are conducted with varying vehicle mass and varying desired vehicle velocity. Results show that the mixed PID and sliding mode controller has better speed tracking performance, robustness and torque control accuracy.

Keywords: hydraulic retarder; torque control; longitudinal control; heavy duty vehicle; sliding mode control.

DOI: 10.1504/IJHVS.2019.102694

International Journal of Heavy Vehicle Systems, 2019 Vol.26 No.6, pp.854 - 871

Received: 12 Mar 2017
Accepted: 16 Oct 2017
Published online: 02 Oct 2019 *

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