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Sensors 2016, 16(9), 1368; doi:10.3390/s16091368

Tracking Control of a Magnetic Shape Memory Actuator Using an Inverse Preisach Model with Modified Fuzzy Sliding Mode Control

Department of Engineering Science and Ocean Engineering, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd., Taipei 106, Taiwan
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Author to whom correspondence should be addressed.
Academic Editor: Vittorio M. N. Passaro
Received: 29 June 2016 / Revised: 10 August 2016 / Accepted: 23 August 2016 / Published: 25 August 2016
(This article belongs to the Section Physical Sensors)

Abstract

Magnetic shape memory (MSM) alloys are a new class of smart materials with extraordinary strains up to 12% and frequencies in the range of 1 to 2 kHz. The MSM actuator is a potential device which can achieve high performance electromagnetic actuation by using the properties of MSM alloys. However, significant non-linear hysteresis behavior is a significant barrier to control the MSM actuator. In this paper, the Preisach model was used, by capturing experiments from different input signals and output responses, to model the hysteresis of MSM actuator, and the inverse Preisach model, as a feedforward control, provided compensational signals to the MSM actuator to linearize the hysteresis non-linearity. The control strategy for path tracking combined the hysteresis compensator and the modified fuzzy sliding mode control (MFSMC) which served as a path controller. Based on the experimental results, it was verified that a tracking error in the order of micrometers was achieved. View Full-Text
Keywords: magnetic shape memory alloys; magnetic shape memory actuator; hysteresis compensator; Preisach model; inverse Preisach model; modified fuzzy sliding mode control; tracking control; non-linear control system magnetic shape memory alloys; magnetic shape memory actuator; hysteresis compensator; Preisach model; inverse Preisach model; modified fuzzy sliding mode control; tracking control; non-linear control system
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Lin, J.-H.; Chiang, M.-H. Tracking Control of a Magnetic Shape Memory Actuator Using an Inverse Preisach Model with Modified Fuzzy Sliding Mode Control. Sensors 2016, 16, 1368.

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