In this paper, the problems of interval observer design for discrete-time switched system are investigated. In order to make the residual system stable and non-negative, a time-varying linear transformation and a standard switched system stability analysis are used. Based on these, an interval observer for discrete-time switched system is constructed. A simulation example is given to illustrate the effectiveness and correctness of the proposed method.
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Guo et al. (2017) studied this question.
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