RT Journal Article
T1 Conceptual Design of a Selectable Fractional-Order Differentiator for Industrial Applications
A1 González, Emmanuel A.
A1 Dorcák, Lubomir
A1 Monje Micharet, Concepción Alicia
A1 Valsa, Juraj
A1 S. Caluyo, Felicito
A1 Petrás, Ivo
AB In the past decade, researchers working on fractional-order systems modeling and control have been considering working on the design and development of analog and digital fractional-order differentiators, i.e. circuits that can perform non-integer-order differentiation. It has been one of the major research areas under such field due to proven advantages over its integer-order counterparts. In particular, traditional integer-order proportional-integral-derivative (PID) controllers seem to be outperformed by fractional-order PID (FOPID or PIlambdaDmu) controllers. Many researches have emerged presenting the possibility of designing analog and digital fractional-order differentiators, but only restricted to a fixed order. In this paper, we present the conceptual design of a variable fractional-order differentiator in which the order can be selected from 0 to 1 with an increment of 0.05. The analog conceptual design utilizes operational amplifiers and resistor-capacitor ladders as main components, while a generic microcontroller is introduced for switching purposes. Simulation results through Matlab and LTSpiceIV show that the designed resistor-capacitor ladders can perform as analog fractional-order differentiation.
PB Springer
SN 1311-0454
YR 2014
FD 2014-06-26
LK https://hdl.handle.net/10016/35991
UL https://hdl.handle.net/10016/35991
LA eng
NO This work was in part supported by grants VEGA 1/0552/14, 1/0729/12, 1/2578/12, 1/0497/11, and APVV-0482-11 from the Slovak Grant Agency, and the Slovak Research and Development Agency, respectively.
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RD 13 may. 2024