Dynamic quantised feedback stabilisation of discrete-time linear system with white noise input

Mingming Ji, Xing He and Weidong Zhang

International Journal of Systems Science, 2015, vol. 46, issue 12, 2221-2230

Abstract: In this paper, we mainly focus on the problem of quantised feedback stabilisation of a stochastic discrete-time linear system with white noise input. The dynamic quantiser is used here. The stability of the system under state quantisation and input quantisation is analysed in detail, respectively. Both the convergence of the state's mean and the boundedness of the state's covariance matrix norm should be considered when analysing its stability. It is shown that for the two situations of the state quantisation and the input quantisation, if the system without noise input can be stabilised by a linear feedback law, it must be stabilised by the dynamic quantised feedback control policy. The sufficient conditions that the dynamic quantiser should satisfy are given. Using the results obtained in this paper, one can test whether the stochastic system is stabilisable or not. Numerical examples are given to show the effectiveness of the results.

Date: 2015
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DOI: 10.1080/00207721.2013.859330

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