Discrete-time model reference control schemes of milling forces using fractional order holds. Part I : known plant

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Rubio, Luis and De la Sen, Manuel; (2006) Discrete-time model reference control schemes of milling forces using fractional order holds. Part I : known plant. In: IEEE Conference on Emerging Technologies and Factory Automation, 2006. ETFA '06. IEEE, Piscataway, New Jersey, pp. 1001-1004. ISBN 0780397584 (https://doi.org/10.1109/ETFA.2006.355439)

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Abstract

This paper introduces a novel model-reference discrete-time control scheme applied to milling processes. The novelty of the scheme relies on the use of a fractional order hold (FROH) instead of a traditional ZOH used in the manufacturing literature to obtain a discrete-time model of the continuous system. The additional degree of freedom introduced by the FROH through its correcting gain allows the designer to improve the transient response of the closed-loop system by an adequate choice of its value. Simulation examples showing the influence of the correcting gain in the closed-loop response are presented and compared. The control scheme is applied in this paper to known piecewise-constant plants being subsequently extended to unknown ones through adaptive control.

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