Title: Electric drive system control strategies of articulated vehicles with four motor-driven wheels

Authors: Xiao Zhang; Yu Meng; Li Liu; Qing Gu

Addresses: Department of Vehicle Engineering, School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China ' Department of Vehicle Engineering, School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China ' Department of Vehicle Engineering, School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China ' Department of Vehicle Engineering, School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China

Abstract: Articulated vehicles are suitable for working on bumpy roads and in narrow spaces. The use of an electric drive system in articulated vehicles is a very important research trend. In this paper, electric drive system control strategies of articulated vehicles with four motor-driven wheels are focused on. Incremental proportional, integral and derivative (PID) control, pre-excitation and feed-forward control are combined to improve the tracking effect for the output voltage of the excitation system of the generator. A self-load test system is designed to prove the performance of the power control strategy. The coaxial equal output torque control strategy is applied instead of the traditional speed control strategy to improve the running performance of the vehicle. A prototype vehicle is designed and several experiments are taken to verify the performance of the torque control strategy.

Keywords: articulated vehicles; electric drive systems; closed-loop power control; coaxial equal output torque control; control strategies; four wheel drive; 4WD; PID control; pre-excitation; feedforward control; vehicle performance.

DOI: 10.1504/IJVD.2015.073132

International Journal of Vehicle Design, 2015 Vol.69 No.1/2/3/4, pp.324 - 347

Received: 11 Oct 2014
Accepted: 23 Jun 2015
Published online: 20 Nov 2015 *

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