Event-triggered annular finite-time H∞ filtering for stochastic network systems

The event-triggered annular finite-time H-infinity filtering problem is addressed for stochastic network systems in this paper. The influence of stochastic disturbance is considered in the whole framework of filter design. A zero-order-holder (ZOH) is introduced to maintain and send the delayed output signals for filter updating. By resorting to a novel delay-dependent Lyapunov-Krasovskii functional (LKF) and LMI technique, the stochastic annular finite-time boundedness of the filtering error system is analyzed. Furthermore, the H-infinity filter design under the event-triggered mechanism is established in the sense of a prescribed H-infinity performance level. Finally, two numerical examples are realized to illustrate the validity of the proposed results. (c) 2022 The Franklin Institute. Published by Elsevier Ltd. All rights reserved.