Observer-based guaranteed cost control for networked control systems with packet dropout and nonlinear disturbance. (December 2022)

• Record Type: Journal Article
• Authors: Qu, Hongchun; Wei, Na; Li, Mengyue; Li, Yu
• Is Part Of: Transactions of the Institute of Measurement and Control. Volume 44:Number 16(2022)
• Page Start: 3255
• Page End: 3265
• Publication Date: 2022-12
• Subjects: Event-triggered mechanism -- networked control systems -- nonlinear disturbance -- output feedback control; Automatic control -- Periodicals; Measuring instruments -- Periodicals; Commande automatique -- Périodiques; Mesure -- Instruments -- Périodiques; 681.2
• DOI: 10.1177/01423312221105140
• Languages: English
• ISSNs: 0142-3312

Abstract

In this article, the observer-based guaranteed cost control method is investigated for the networked control systems (NCSs) with packet dropout and nonlinear disturbance involving event-triggered mechanism (ETM). The packet dropout processes, which appear in both the sensor-to-controller and the controller-to-actuator links, are represented by two mutually independent Bernoulli distributions, and the nonlinear disturbance is supposed to satisfy the Lipschitz condition. Since the systems states are unmeasurable, a state observer is designed to estimate the values of system state. The sufficient condition for the stability of the closed-loop system is addressed by applying the Lyapunov theorem, and a guaranteed cost controller is obtained based on the stability condition with the satisfaction of some given specified value of cost function. Furthermore, the controller design issue can be formulated as a convex optimization problem that is addressed by the linear matrix inequality (LMI) technique using the cone complementarity linearization algorithm. Finally, the availability of above method is proved by a simulation example.