Generalised KYP lemma with its application in finite frequency H∞ distributed filter design for nonideally interconnected networked control systems

Xuefeng Chen, Huiling Xu, Xiaokai Zhai and Zhiping Lin

International Journal of Systems Science, 2021, vol. 52, issue 3, 635-656

Abstract: This paper addresses the generalised Kalman-Yakubovich-Popov (GKYP) lemma and its application in finite frequency (FF) $H_\infty$H∞ distributed filter design for networked control systems (NCSs). The network communication channels between subsystems are considered to be affected by uncertainties. Firstly, based on the proposed linear matrix inequality characterisation for an FF region and S-procedure, a GKYP lemma is presented for NCSs. After that, the FF bounded realness and FF positive realness in terms of individual subsystems are studied as special cases of the proposed GKYP lemma. Moreover, as an application of the developed GKYP lemma, the FF $H_\infty$H∞ distributed filtering problem for nonideally interconnected NCS is studied. Finally, illustrative examples are given to show that the developed EF methods have less conservation than the common method over the entire frequency region.

Date: 2021
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DOI: 10.1080/00207721.2020.1837286

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