Abstract
This paper is concerned with the guaranteed cost controller design of networked control systems (NCSs) with interval varying time-delay. The non-ideal quality of service (QoS) are taken into account by an integrated index tau (t), which related to data dropout, network-induced delay and error sequence. A new analysis method is provided by using the convexity of the matrix function in deriving the results to avoid the conservatism caused by enlarging tau (t) to tau <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">M</sub> . Suboptimal guaranteed cost state feedback controller and performance index are developed by solving a set of LMIs based on Lyapunov functional method and a cone complementary linearisation (CCL) algorithm. Numerical example and simulation results are given finally to illustrate the effectiveness of our methods.
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