Title: Active fault tolerance control for active suspension with control input time-delay and actuator gain variation fault

Authors: Hongbo Wang

Addresses: Anhui Province Key Laboratory of Industry Safety and Emergency Technology, School of Automotive and Transportation Engineering, Hefei University of Technology, Hefei 230009, China; School of Electrical, Computer and Telecommunications Engineering, University of Wollongong, NSW 2522, Australia

Abstract: An active suspension system (ASS) subject to control input time-delay and actuator gain fault is considered in this paper. The system dynamics models with time-delay and gain fault are built. A sliding-mode controller is designed to maintain the stability for the time-delay system. By employing a robust observer and residue errors, the gain fault is detected and diagnosed. The control law reconfiguration is adopted to realise the active fault tolerance control. The act-and-wait control is applied for the active suspension nonlinear system. Comparative simulation results for a quarter-car ASS are presented to show the effectiveness of the adopted control scheme.

Keywords: active suspension; time delay; gain fault; FTC; fault tolerance control.

DOI: 10.1504/IJHVS.2020.111260

International Journal of Heavy Vehicle Systems, 2020 Vol.27 No.5, pp.703 - 722

Received: 24 Oct 2017
Accepted: 23 Jun 2018
Published online: 17 Nov 2020 *

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