Robust combined feedback/feedforward control for fractional FOPDT systems

Padula, Fabrizio; Visioli, A.

doi:10.1002/oca.2212

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Authors

Padula, Fabrizio

Visioli, A.

Date

2016

Type

Journal Article

Metadata

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Citation

Padula, F. and Visioli, A. 2016. Robust combined feedback/feedforward control for fractional FOPDT systems. Optimal Control Applications and Methods. 37 (5): pp. 902-921.

Source Title

Optimal Control Applications and Methods

DOI

10.1002/oca.2212

ISSN

0143-2087

School

Department of Mathematics and Statistics

URI

http://hdl.handle.net/20.500.11937/52457

Collection

Curtin Research Publications

Abstract

Copyright © 2015 John Wiley & Sons, Ltd.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. Copyright © 2015 John Wiley & Sons, Ltd.