An Improved Architecture for Networked Control Systems

Authors:	Quevedo Daniel E., The University of Newcastle, Australia Goodwin Graham C., The University of Newcastle, Australia
Topic:	2.1 Control Design
Session:	Advances in Predictive Control
Keywords:	predictive control, quantized signals, communication control applications, digital control, multirate, multilevel control

Abstract

This paper describes a novel networked control system architecture in which the down-link communication system is designed to operate in two different modes. This achieves improved trade-offs between error probabilities and transmission delays. The method is illustrated for the case of a physical channel which can either function as an error-free delay (virtual) channel or as a delay-free erasure (virtual) channel with a given probability of error. It is shown how this architecture outperforms existing methods which make use of only one communication mode.