Event design in event-triggered feedback control systems

• Published in: 2008 47th IEEE Conference on Decision and Control pp. 2105 - 2110
• Main Authors: Xiaofeng Wang, Lemmon, M.D.
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01.12.2008
• Subjects: Asymptotic stability; Continuous time systems; Control systems; Delay; Discrete event simulation; Feedback control; Hardware; Measurement errors; Real time systems; Robustness
• ISBN: 9781424431236; 1424431239
• ISSN: 0191-2216
• DOI: 10.1109/CDC.2008.4739105

This paper studies the event design in event-triggered feedback systems with asymptotic stability. A new event-triggering scheme is presented that may postpone the occurrence of events over previously proposed methods. Our approach pertains to nonlinear state-feedback systems. The resulting event-triggered feedback systems are guaranteed to be asymptotically stable, provided that the continuous systems are stabilizable. We also show that the task periods and deadlines generated by our scheme are bounded strictly away from zero if the continuous systems are input-to-state stable with respect to measurement errors. Simulation results indicate that our event-triggered scheme has a much larger average period compared with the prior work. Moreover, our scheme also appears to be robust to task delays.