On asynchronous event-triggered control of decentralized networked systems

This paper deals with the problem of asynchronous event-triggered control for decentralized networked systems. A group of geographically distributed sensors rather than a centralized sensor are deployed to asynchronously sample and measure the system's state signal. First, an asynchronous decentralized event-triggered transmission scheme is developed to check which sensor measurements should be transmitted to a remote control station via a network channel. Second, a series of artificial piecewise functions are introduced to incorporate the simultaneous effects of intermittent transmissions and network-induced delays into multiple delays. By considering distribution characteristics of these delays and using a switching Lyapunov-Krasovskii functional, criteria on L2 stability analysis and control design are derived. Finally, a well-used batch reactor system is employed to illustrate the effectiveness of the proposed control design method.