In this paper, a combined feedback/feedforward design methodology is proposed for fractional systems 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, an optimal set of tuning 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.

Robust combined feedback/feedforward control for fractional FOPDT systems

PADULA, Fabrizio;VISIOLI, Antonio
2016-01-01

Abstract

In this paper, a combined feedback/feedforward design methodology is proposed for fractional systems 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, an optimal set of tuning 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.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11379/485830
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