Robust Output-Feedback Based Fault-Tolerant Control of Active Suspension with Finite-Frequency Constraint★. Issue 21 (2015)

• Record Type: Journal Article
• Authors: Jing, Hui; Wang, Rongrong; Karimi, Hamid Reza; Chadli, Mohammed; Hu, Chuan; Yan, Fengjun
• Is Part Of: IFAC-PapersOnLine. Volume 48:Issue 21(2015)
• Page Start: 1173
• Page End: 1179
• Publication Date: 2015
• Subjects: Active suspension -- fault-tolerant control -- finite frequency -- output feedback; Automatic control -- Periodicals; 629.805
• DOI: 10.1016/j.ifacol.2015.09.685
• Languages: English
• ISSNs: 2405-8963

Abstract

Abstract: In this paper, the H∞ fault-tolerant control (FTC) problem of active suspensions with finite-frequency constraints is investigated. A full-car model is employed in the controller design such that the heave, pitch and roll motions can be simultaneously controlled. Both the actuator faults and external disturbance are considered in the controller design. As the human body is more sensitive to the vertical vibration in 4-8Hz, robust H∞ control with finite frequency constraints is designed. From the practical perspective, a robust dynamic output-feedback controller with fault tolerant ability is proposed, while other performances such as suspension deflection and actuator saturation are also considered. Compared with passive suspension, the performance of the proposed controller is more effective, especially in 4-8 Hz range.