New Stability Criteria for Discrete-time Systems with Interval Time-varying Delay and Polytopic Uncertainty
نویسندگان
چکیده
This paper is considered with the robust stability problem for linear discretetime systems with polytopic uncertainty and an interval time-varying delay in the state. On the basis of a novel Lyapunov-Krasovskii functional, new delay-range-dependent stability criteria are established by employing the freeweighting matrix approach and a Jensen-type sum inequality. It is shown that the newly proposed criteria can provide less conservative results than some existing ones. Numerical examples are given to illustrate the effectiveness of the proposed approach. Keywords— Delay-range-dependent stability; Lyapunov-Krasovskii functional; Discretetime systems; Time-varying delay; Linear matrix inequality (LMI)
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