Fixed-order H-infinity controller design for systems with ellipsoidal parametric uncertainty

In this paper, fixed-order robust H-infinity controller design for systems with ellipsoidal parametric uncertainty based on parameter dependent Lyapunov functions is studied. Using the concept of Strictly Positive Realness (SPRness) of transfer functions, a fixed-order robust control design method in terms of solution to a set of Linear Matrix Inequalities (LMIs) is proposed. Since, controller parameters are decision variables, any controller structure, such as PID, can be considered. The weighted infinity-norm of closed loop sensitivity functions are considered as performance specification in the synthesis problem. The simulation results show the effectiveness of the proposed method.


Published in:
International Journal of Control, 84, 1, 57-65
Year:
2011
Publisher:
Taylor & Francis
ISSN:
0020-7179
Keywords:
Laboratories:




 Record created 2010-04-21, last modified 2018-09-13

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