Quantization in Model Based Networked Control Systems

Luis Montestruque and Panos J.Antsaklis

Proc. of the 16th IFAC World Congress
Prague, Czech Republic, July 4-8 2005

Abstract—Model-Based Networked Control Systems (MB-NCS) use a model of the plant to compensate for the lack of information between transmission times. This results in a significant reduction of the bandwidth used for stabilizing the control system. Previously published stability results for MB-NCS assume no quantization error. In this paper quantization is introduced for MBNCS. Sufficient stability conditions for static uniform, static logarithmic, and dynamic quantizers for continuous linear time-invariant plants are derived. The results illustrate the effects of quantization over the stability of MB-NCS and suggest a design model that starts with the nonquantized MB-NCS.

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