Quantization in Model Based Networked Control Systems

Authors:	Montestruque Luis, University of Notre Dame, United States Antsaklis Panos J., University of Notre Dame, United States
Topic:	3.3 Computers and Telematics
Session:	Wireless Networks for Control
Keywords:	Model-Based Networked Control System, Quantization, Limited Information

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 MB-NCS. Sufficient stability conditions for static uniform, static logarithmic, and dynamic quantizers are derived. The results illustrate the effects of quantization on the stability of MB-NCS and suggest a design model that starts with the non-quantized MB-NCS.