Fault-Tolerant Control for Discrete Linear Systems with Consideration of Actuator Saturation and Performance Degradation★. Issue 21 (2015)

• Record Type: Journal Article
• Authors: Wang, Z.; Rodrigues, M.; Theilliol, D.; Shen, Y.
• Is Part Of: IFAC-PapersOnLine. Volume 48:Issue 21(2015)
• Page Start: 499
• Page End: 504
• Publication Date: 2015
• Subjects: Fault estimation -- descriptor system -- observer design -- fault-tolerant control -- performance degradation; Automatic control -- Periodicals; 629.805
• DOI: 10.1016/j.ifacol.2015.09.575
• Languages: English
• ISSNs: 2405-8963

Abstract

Abstract: This paper proposes an active fault-tolerant control method for discrete-time linear systems with actuator faults. The main contribution of this paper lies in the capability of dealing with the actuator saturation and accepting the performance degradation. In this paper, a fault estimation observer is first designed by constructing an equivalent descriptor system model of the original plant. To accept performance degradation of the post-fault system, a degradation factor is introduced into the REFERENCE model. In the fault-tolerant control design, both the actuator saturation and performance degradation are considered, and the fault-tolerant control input and the degradation factor are simultaneously designed by solving a constrained optimization problem. Finally, an aircraft example is simulated to demonstrate the effectiveness and performance of the proposed method.