Sampled-data observer-based anti-windup control for singularly perturbed systems with actuator saturation. (August 2019)

• Record Type: Journal Article
• Authors: Yan, Yifang; Yang, Chunyu; Ma, Xiaoping; Zhou, Linna
• Is Part Of: ISA transactions. Volume 91(2019)
• Page Start: 32
• Page End: 40
• Publication Date: 2019-08
• Subjects: Singularly perturbed systems -- Sampled-data observer-based control -- Anti-windup compensator -- Actuator saturation; Engineering instruments -- Periodicals; Engineering instruments; Periodicals; Electronic journals; 629.805
• DOI: 10.1016/j.isatra.2019.01.030
• Languages: English
• ISSNs: 0019-0578

Abstract

Abstract: In this paper, the problem of sampled-data observer-based anti-windup (AW) control for singularly perturbed systems with actuator saturation is considered. A sampled-data observer-based AW controller consisting of a sampled-data observer, controller and AW compensator is proposed for the first time. Based on an ε -dependent Lyapunov–Krasovskii functional and linear matrix inequalities, the three components of sampled-data observer-based AW controller are designed simultaneously, which can reduce the conservatism. Furthermore, a convex optimization algorithm is formulated to obtain a desired stability bound and enlarge the basin of attraction at the same time. Finally, examples are provided to demonstrate the effectiveness and merits of the obtained results. Highlights: The proposed controller consists of sampled-data observer, controller and AW compensator. The three parts of sampled-data observer-based AW controller are designed simultaneously. The perturbation parameter ε and sampling mode are considered in the new proposed LKF. The advantages of the proposed method are shown in the ε -bound and the basin of attraction.