Robust H-infinity Controller Design Using Frequency-Domain Data

A new robust controller design method is developed for linear time-invariant single-input single-output systems presented by their frequency response data. The performance specifications are in terms of the upper bounds on the infinity norm of weighted closed-loop frequency responses. The designed controller is robust in terms of frequency-domain disk and polytopic uncertainty as well as multimodel uncertainty. The necessary and sufficient conditions for the existence of such controllers are presented by a set of convex constraints. The practical issues to compute fixed-order rational H-infinity controllers by convex optimization techniques are discussed. The experimental results on an electromechanical system illustrate the effectiveness of the proposed method.


Presented at:
19th IFAC World Congress, Cape Town, South Africa, August 24-29, 2014
Year:
2014
Keywords:
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 Record created 2014-02-14, last modified 2018-09-13

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