Abstract
This paper is concerned with the event-triggered H∞ fusion estimation problem for uncertain discrete-time Hamiltonian systems with time-varying delays and sensor saturations. In order to improve the efficiency of resource utilization, a component-based event-triggered mechanism is implemented on the communication path from sensors to the estimator, where each output is sent only when a prescribed event-triggering condition is satisfied. By considering the structural characteristics of discrete-time Hamiltonian systems and utilizing the Lyapunov–Krasovskii stability, sufficient conditions are established to guarantee the augmented system (i.e., the underlying system combined with the estimation error dynamics) is locally exponentially stable. Meanwhile, the estimator gain is acquired by resorting the approach of certain matrix inequality. Finally, two examples are provided to demonstrate the effectiveness of the proposed scheme.
•The event-triggered fusion estimation problem is considered.•Uncertain discrete-time Hamiltonian systems are dealt with.•Both time-varying delays and sensor saturations are investigated.•A component-based event-triggered mechanism is implemented.•Sufficient conditions are established for the stability of the estimation errors.