Decentralized Robust Control of Decomposed Uncertain Interconnected Systems

[+] Author and Article Information
Cheng-Fa Cheng

Institute of Electronics, National Chiao-Tung University, Hsin-Chu 30050, Taiwan

Wen-June Wang

Department of Electrical Engineering, National Central University, Taiwan

Yu-Ping Lin

Department of Control Engineering, National Chiao-Tung University, 1001 Ta-Hsueh Road, Hsin-Chu 30050, Taiwan

J. Dyn. Sys., Meas., Control 115(4), 592-599 (Dec 01, 1993) (8 pages) doi:10.1115/1.2899186 History: Received February 01, 1992; Revised February 01, 1993; Online March 17, 2008


In this paper, a new design technique of decentralized robust controllers for a class of uncertain interconnected system is provided. The interconnection matrices and the uncertainties of the system are decomposed into a matched and a mismatched portions. Since the matched portion can always be compensated by feedback controls, this new technique can provide local controllers to withstand strong inter-connections and large uncertainties. The relations among local feedback gains, uncertainty bounds, and interconnection strength are established to aid the robust controller design. A practical system with simulation results is given to exemplify the implementation of the controller design technique.

Copyright © 1993 by The American Society of Mechanical Engineers
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