H∞ dynamic output feedback control for a networked control active suspension system under actuator faults. (1st January 2022)

• Record Type: Journal Article
• Authors: Viadero-Monasterio, Fernando; Boada, B.L.; Boada, M.J.L.; Díaz, V.
• Is Part Of: Mechanical systems and signal processing. Volume 162(2022)
• Publication Date: 2022-01-01
• Subjects: Active suspension -- H∞control -- Dynamic Output Feedback Control (DOFC) -- Event-triggering -- Actuator faults; Structural dynamics -- Periodicals; Vibration -- Periodicals; Constructions -- Dynamique -- Périodiques; Vibration -- Périodiques; Structural dynamics; Vibration; Periodicals; 621
• DOI: 10.1016/j.ymssp.2021.108050
• Languages: English
• ISSNs: 0888-3270

Abstract

Abstract: This paper presents an investigation of the event-triggered control problem for an active suspension system featuring a networked communication architecture and Dynamic Output Feedback Controller (DOFCs) while taking into account the possibility of failure in actuators. The event-triggering condition determines when it is necessary to transmit the observed variables of the plant to the controller, in order not to saturate the network. A Dynamic Output Feedback Controller is synthesized under LMI restrictions to guarantee the system stability with the H ∞ criteria, using the Lyapunov–Krasovskii functional approach. As the failures in actuators affect the state space model of the system, a novel polytopic model is employed to approach the plant function. In order to prove a practical feasibility, control performance characteristics for vibration suppression are evaluated under various road conditions. Highlights: Actuator failure is modelled through a polytopic model. To reduce the networked data transmission, an Event-Triggered law is used. Ride comfort and road holding are simultaneously improved.