Observer-based controller design for networked control systems with sensor quantisation and random communication delay

Ming Liu and Jia You

International Journal of Systems Science, 2012, vol. 43, issue 10, 1901-1912

Abstract: This article addresses the study of observer-based controller design for network-based control systems in the presence of output quantisation and random communication delay simultaneously. In the communication channel, the output measurement are quantised before transmission, and two kinds of network-induced delays are taken into account simultaneously: (i) random delay from sensor to controller and (ii) random delay from controller to actuator. These two types of random delays are modelled as two independent Bernoulli distributed white sequences. The observer-based controller is synthesised to stabilise the networked closed-loop system in the sense of stochastic stability. Sufficient conditions for the existence of the controller are provided by stochastic Lyapunov method. An illustrative numerical example is employed to demonstrate the applicability and flexibility of the proposed design strategy.

Date: 2012
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DOI: 10.1080/00207721.2011.555013

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