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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/28592

Title: On the Geometric Structure of the H-infinity Central Controller
Authors: Wu P. F.;YUNG C. F.
Contributors: NTOU:Department of Electrical Engineering
Date: 2008
Issue Date: 2011-10-21T02:38:20Z
Publisher: IFAC World Congress 2008, Seoul, Korea
Abstract: This paper shows that the controllable and unobservable subspaces of the H-infinity central controller for a linear continuous-time system can be characterized by the image and kernel spaces of two matrices ZL and WL, where ZL and WL are positive semidefinite solutions of two pertinent Lyapunov equations whose coefficients involve Xinfinity and Zinfinity, the stabilizing solutions of two celebrated algebraic Riccati equations used in solving the H-infinity control problem. Furthermore, under this characterization, it is shown that the unobservable subspace of the central controller contains the intersection of KerXinfinity and the unobservable subspace of the plant. In addition, it is also shown that the central controller's controllable subspace is a subspace of the sum of ImZinfinity and the plant's controllable subspace. A numerical example is also given for illustration. In terms of geometric language, all the results and proofs given are clear and simple.
URI: http://ntour.ntou.edu.tw/handle/987654321/28592
Appears in Collections:[電機工程學系] 演講及研討會

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