Event-triggered dynamic output feedback control for networked control systems

• Published in: IET control theory & applications Vol. 8; no. 4; pp. 226 - 234
• Main Authors: Zhang, Xian-Ming, Han, Qing-Long
• Format: Journal Article
• Language: English
• Published: Stevenage The Institution of Engineering and Technology 01.03.2014; John Wiley & Sons, Inc
• Subjects: closed‐loop system; communication network; control system synthesis; controller design; delays; discrete event systems; discrete event triggering mechanism; DOFC; event triggered dynamic output feedback control; feedback; interval time‐varying delay; Lyapunov methods; Lyapunov‐Krasovskii functional approach; multivariable control systems; networked control systems; signal measurement; signal processing; time‐varying systems; signal measurement; time-varying systems; discrete event triggering mechanism; communication network; signal processing; controller design; DOFC; control system synthesis; feedback; discrete event systems; multivariable control systems; delays; Lyapunov-Krasovskii functional approach; interval time-varying delay; networked control systems; event triggered dynamic output feedback control; closed-loop system; Lyapunov methods
• ISSN: 1751-8644; 1751-8652
• DOI: 10.1049/iet-cta.2013.0253

This study is concerned with the event-triggered control for networked control systems via dynamic output feedback controllers (DOFCs). The output measurement signals of the physical plant are sampled periodically. An output-based discrete event-triggering mechanism is introduced to choose those only necessary sampled-data packets to be transmitted through a communication network for controller design. Under this event-triggering mechanism, the resultant closed-loop system is first modelled as a linear system with an interval time-varying delay. Then a novel stability criterion is established by employing the Lyapunov–Krasovskii functional approach. Based on this stability criterion, a new sufficient condition is derived to co-design both the desired DOFCs and the event-triggering parameters. Finally, a satellite control system is taken to show the effectiveness of the proposed method.