Adaptive fuzzy fault-tolerant control for active seat suspension systems with full-state constraints. Issue 1 (31st December 2023)

• Record Type: Journal Article
• Authors: Ma, Shuo; Li, Yongming
• Is Part Of: Systems science & control engineering. Volume 11:Issue 1(2023)
• Publication Date: 2023-12-31
• Subjects: Active seat suspension systems -- fault-tolerant control -- full-state constraint -- system stability; System theory -- Periodicals; Automatic control -- Periodicals; 003.05
• DOI: 10.1080/21642583.2022.2153391
• Languages: English
• ISSNs: 2164-2583

Abstract

Abstract : In this paper, an adaptive fuzzy fault-tolerant control (FTC) scheme is proposed for active seat suspension systems. The addressed system contains electromagnetic actuator faults. In addition, the constraints of the displacements of the car seat, active suspension, and wheel, their vertical vibration speeds and current intensity are included. In the control design, since the systems have dynamic characteristics of complexities and spring non-linearities, the fuzzy logic systems are utilized to approximate the unknown nonlinear dynamics. By the aid of Barrier Lyapunov functions and based on the adaptive backstepping recursive design algorithm, a novel adaptive fuzzy FTC scheme is formulated. When the electromagnetic actuator fails, the developed control scheme can guarantee that all the vertical vibration states are stable. Eventually, the effectiveness of the presented control method is offered to illustrate by a random road surface.