Technical Communique: Cheap decoupled control

Authors:
Thomas S. Brinsmead;Graham C. Goodwin
Affiliations:
Research School of Information Sciences and Engineering, Australian National University, Canberra, ACT 0200, Australia;Department of Electrical and Computer Engineering, University of Newcastle, NSW 2308, Australia
Venue:
Automatica (Journal of IFAC)
Year:
2001

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Abstract

Requiring a controlled system to be decoupled may increase some performance costs, however, decoupling may be desirable from an applied perspective. This paper gives an explicit quantification of decoupling costs in terms of the average quadratic tracking error. The analysis exploits the parametrisation of all decoupling controllers, together with Wiener-Hopf frequency domain techniques.