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Computer-aided decoupling controller design

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2 Author(s)
Tung-Fu Hsieh ; Dept. of Control Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan ; Ching-An Lin

An optimization-based decoupling controller design approach is proposed for linear time-invariant multivariable systems. The formulation of the optimization program is based on the description of all decoupling controllers and all achievable decoupled I/O maps. By considering only decoupling controllers, the design of MIMO feedback systems is simplified: the controller design for an n-input n-output system is reduced to n SISO controller design problems. As a consequence most design specifications for the MIMO system can be given in terms of specifications on the n uncoupled SISO channels. In the proposed approach, engineering level design specifications in both time-domain and frequency-domain are considered, and the design problem is formulated as a semi-infinite optimization problem with inequality constraints and functional inequality constraints. The proposed design approach is implemented as an interactive computer-aided design package cadec for use under MATLAB. Two illustrative design examples are given

Published in:

Computer-Aided Control System Design, 1994. Proceedings., IEEE/IFAC Joint Symposium on

Date of Conference:

7-9 Mar 1994