In this paper a combined feedback/feedforward design methodology is proposed in order to cope with model uncertainty and to minimize performance degradation. Based on a fractional commensurate uncertain model, a parametric robust controller is first designed. Then, a parametric command signal for the unity feedback loop is designed. Finally, the optimal set of parameters is found by solving a constrained min-max optimization problem in order to minimize the worst-case settling time. Simulation results show the effectiveness of the methodology.
Optimal feedback/feedforward control of fractional FOPDT uncertain systems
PADULA, Fabrizio;VISIOLI, Antonio
2013-01-01
Abstract
In this paper a combined feedback/feedforward design methodology is proposed in order to cope with model uncertainty and to minimize performance degradation. Based on a fractional commensurate uncertain model, a parametric robust controller is first designed. Then, a parametric command signal for the unity feedback loop is designed. Finally, the optimal set of parameters is found by solving a constrained min-max optimization problem in order to minimize the worst-case settling time. Simulation results show the effectiveness of the methodology.File in questo prodotto:
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