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Combined fractional feedback-feedforward controller design for electrical drives

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Authors
Leuzzi, R.
Lino, P.
Maione, G.
Stasi, S.
Padula, Fabrizio
Visioli, A.
Date
2014
Type
Conference Paper

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Leuzzi, R. and Lino, P. and Maione, G. and Stasi, S. and Padula, F. and Visioli, A. 2014. Combined fractional feedback-feedforward controller design for electrical drives.
Source Title
2014 International Conference on Fractional Differentiation and Its Applications, ICFDA 2014
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Department of Mathematics and Statistics
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Abstract

© 2014 IEEE.This paper focuses on a design method for feedback and feedforward fractional order control of electromechanical systems. The architecture combines a fractional order proportional-integral controller and a set-point filter. First, the open-loop frequency response is shaped to obtain robustness specifications and to approximate an optimal feedback system in the input-output tracking, at least in a specified bandwidth. Secondly, the set-point filter is designed by dynamic inversion to minimize the difference between the ideal synthesized command signal, that provides a smooth monotonic response, and the filter step response. Tests on the position/speed control of DC and permanent magnet synchronous motors show the effectiveness of the methodology in comparison with PI controller tuned by symmetrical optimum and coupled with a smoothing filter.