Abstract
In this paper, a new event-triggered control (ETC) scheme is proposed to investigate the observer-based output feedback control problems. To reduce the usage of communication resources, the control input is designed as a specific time-varying signal between two consecutive event-triggering instants, which is different from the general ETC methods. For the continuous-time event detection case, it is shown that the obtained lower bound of the minimum inter-event interval is not smaller than the one using the existing method. In addition, a novel discrete-time event detection scheme and the corresponding ETC policy based on the sampling output is proposed. Employing the stability analysis method for the time-delay system, a sufficient condition on the existence of an observer-based controller is presented. Finally, the simulation results are given to show that the proposed ETC scheme is beneficial to further reduce the frequency of the communication between sensors and the control unit.
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