A multiple-observer approach to stability in wireless network control systems
نویسندگان
چکیده
This paper describes a new multiple-observer approach to Wireless Network Control Systems (WNCS). Two sets of observers are proposed, Lost Sample Observers (LSO) to deal with packet dropout and State Prediction Observers (SPO) to compensate for time-varying delays. These are designed using Linear Matrix Inequalities (LMI), thereby ensuring closed-loop stability. A numerical example, of a cart-mounted inverted pendulum is given along with results from simulation studies, comparing this new approach with a constant gain Linear Quadratic Regulator (LQR), in the presence of time-varying delays. Practical experimental results, on a IEEE 802.11b wireless channel in a reverberation chamber, further confirm the efficacy of the approach.
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