Output feedback H∞ control of cyber-physical systems triggered by two terminal dynamic events

Journal of Lanzhou University of Technology ›› 2022, Vol. 48 ›› Issue (3): 77-85.

• Automation Technique and Computer Technology • Previous Articles Next Articles

Output feedback H_∞ control of cyber-physical systems triggered by two terminal dynamic events

WANG Zhi-wen^1,2,3, CHEN Wan-jie¹, SUN Hong-tao⁴

1. College of Electrical and Information Engineering, Lanzhou Univ. of Tech., Lanzhou 730050, China;
2. Key Laboratory of Gansu Advanced Control for Industrial Processes, Lanzhou Univ. of Tech., Lanzhou 730050, China;
3. National Demonstration Center for Experimental Electrical and Control Engineering Education, Lanzhou Univ. of Tech., Lanzhou 730050, China;
4. College of Engineering, Qufu Normal University, Qufu 273165, China

Received:2020-11-27 Online:2022-06-28 Published:2022-10-09

Abstract

Abstract: This paper is concerned with the dynamic output feedback control of cyber-physical systems with two terminal dynamic event triggering strategy H_∞control problem. Firstly, the closed-loop system is modeled as a linear system with two interval time-varying delays based on an input delay method and a delay partition method. The internal dynamic variables are introduced into the event triggering strategies of sensor controller and controller actuator channels, respectively, and the communication mechanism of asynchronous dynamic event triggering strategy is established to reduce the amount of data transmission by enlarging the inter-event intervals. Secondly, to ensure the stability of the closed-loop system, asymptotic stability criteria satisfying H_∞ performance is derived, by applying the Lyapunov-Krasovskii functional approach. Based on this stability criterion, the co-design of dynamic output feedback controller and dynamic event triggering strategy are realized. Furthermore, it is proved that minimum inter-event time of event generator are lower bounded by a positive scalar, which thus excludes Zeno phenomenon. Finally, an example of satellite system is given to illustrate the effectiveness of the proposed strategy.

Key words: cyber-physical systems, dynamic event triggering control, dynamic output feedback control, H_∞ control

CLC Number:

TP273

WANG Zhi-wen, CHEN Wan-jie, SUN Hong-tao. Output feedback H_∞ control of cyber-physical systems triggered by two terminal dynamic events[J]. Journal of Lanzhou University of Technology, 2022, 48(3): 77-85.

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Output feedback H_∞ control of cyber-physical systems triggered by two terminal dynamic events

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