Multi-Sensor H∞ Filter Design for Networked Control Systems with Unknown Communication Delays

In this paper, the problem of multi-sensor H
_∞
filter for networked control systems with unknown communication delays is investigated. A filter for the unknown communication delays system is developed to guarantee the exponentially mean-square stability of the closed-loop system provided its equivalent robust filter is designed. The measured output is prone to sensor saturation which has sector-nonlinearities capability to measure the physical plant. The unknown communication delays are considered in the sensor to the controller link. Given the limitations in communication delays, a filtering scheme is designed via linear matrix inequalities (LMIs) and Lyapunov stability theory. A simulation result is given to prove the effectiveness of the proposed method.