On improving control-loop robustness of model-matching controllers |
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| Authors: | J B Moore Lige Xia K Glover |
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| Affiliation: | Department of Systems Engineering, Research School of Physical Sciences, Australian National University, P.O. Box 4, Canberra, A.C.T. 2600, Australia;Department of Engineering, University of Cambridge, Trumpington Street, Cambridge, CB2 IPZ, United Kingdom |
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| Abstract: | This note first characterizes the class of all stabilizing controllers for a two-degree-of-Freedom control system which achieve a prescribed achievable transfer function. The characterization is in terms of an arbitrary proper stable transfer function. With this characterization, robust model matching is formulated as a standard H∞-optimization problem. This means that standard controller designs for a nominal plant, such as linear-quadratic Gaussian ones, can be enhanced to give improved robustness properties using H∞-design techniques. |
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| Keywords: | Stabilizing controllers Two-degree-of-freedom controller design H∞ optimization Model matching Robust controller design |
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