DELAY-DEPENDENT ROBUST FILTERING FOR NETWORKED CONTROL SYSTEMS WITH POLYTOPIC UNCERTAINTIES

This paper investigates the problem of delay dependent robust filtering for networked control systems, where measurement quantization, signal transmission delay and data packet dropout are considered The signal transmission delays are assumed to have both an upper bound and a lower bound The objective of our work is to develop a less conservative condition to guarantee the closed loop system asymptotic stability with the prescribed H(infinity) performance Based on the derived H(infinity) performance analysis results, the H(infinity) filter is designed in terms of linear matrix inequalities Moreover, the resulting criterion is extended to more general cases, where the parameter uncertainty of system matrices is assumed to be of the polytopic type Finally, numerical examples are presented to illustrate the effectiveness of the main results