New reliable H∞ filter design for networked control systems with external disturbances and randomly occurring sensor faults

This paper deals with the reliable H∞-based filtering problem of nonlinear networked control systems in the presence of external disturbances and random sensor faults. More precisely, a random variable obeying the Bernoulli distribution is adopted to describe the failures of the network sensors. By employing the Lyapunov-Krasovskii functional method, delay-dependent criteria are developed to guarantee the existence of the designed filter with the prescribed H∞ performance. Then, a design method is given to calculate the desired reliable filter parameters. An illustrative example is provided to demonstrate the effectiveness and usefulness of the established theoretical results.