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Modal synthesis method for norm computation ofH decentralized control systems (I)

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Abstract

When using H techniques to design decentralized controllers for large systems, the whole system is divided into subsystems, which are analysed using H control theory before being recombined. An analogy was established with substructural analysis in structural mechanics, in which H decentralized control theory corresponds to substructural modal synthesis theory so that the optimal H norm of the whole system corresponds to the fundamental vibration frequency of the whole structure. Hence, modal synthesis methodology and the extended Wittrick-Williams algorithm were transplanted from structural mechanics to compute the optimal H norm of the control system. The orthogonality and the expansion theorem of eigenfunctions of the subsystems H control are presented in part (I) of the paper. The modal synthesis method for computation of the optimal H norm of decentralized control systems and numerical examples are presented in part (II).

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Contributed by ZHONG Wan-xie

Foundation items: the National Key Basic Research Special Foundation of China (G1999032805); the National Natural Science Foundation of China (19732020, 10202004); the UK Engineering and Physical Sciences Research Council(GR/R05437/01)

Biography: ZHONG Wan-xie (1934 ∼)

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Wan-xie, Z., Zhi-gang, W., Qiang, G. et al. Modal synthesis method for norm computation ofH decentralized control systems (I). Appl Math Mech 25, 123–134 (2004). https://doi.org/10.1007/BF02437313

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  • DOI: https://doi.org/10.1007/BF02437313

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Chinese Library Classification

2000 Mathematics Subject Classification

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