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Sensors 2018, 18(9), 3070; https://doi.org/10.3390/s18093070

Study on the Magnetic-machine Coupling Characteristics of Giant Magnetostrictive Actuator Based on the Free Energy Hysteresis Characteristics

1,2,* , 1,2
and
3
1
Key Laboratory of Metallurgical Equipment and Control Technology of Ministry of Education, Wuhan University of Science and Technology, Wuhan 430081, China
2
Hubei Key Laboratory of Mechanical Transmission and Manufacturing Engineering, Wuhan University of Science and Technology, Wuhan 430081, China
3
Hubei Wuhan Tobacco Company Cigarette Logistics Distribution Center, Wuhan 430000, China
*
Author to whom correspondence should be addressed.
Received: 29 July 2018 / Revised: 6 September 2018 / Accepted: 10 September 2018 / Published: 12 September 2018
(This article belongs to the Special Issue Recent Advances of Piezoelectric Transducers and Applications)
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Abstract

A giant magnetostrictive actuator presents advantages such as large strain, high precision, and quick response. It is a hotly debated research topic in the field of micro drivers; however, the nonlinear intrinsic relationship between its output and input signals make it difficult to construct its nonlinear eigen model in the process of its practical application. Therefore, the motivation of this paper is to study the nonlinear magnetic–mechanical coupling characteristics of the giant magnetostrictive actuator, which is driven by free energy hysteresis characteristics. The nonlinear magnetic–mechanical coupling model under the weak form solution is deduced from the basic electromagnetic and mechanical theories, based on the distribution law of the axial magnetic field simulation, carried out to analyze the output displacement characteristics of the giant magnetostrictive actuator under preload. Experimental characterization of the device is also studied in the built experiment setup. Research results show that the experimental results coincide well with the simulation results, which show that the designed magnetic circuit for the giant magnetostrictive actuator is correct, and the coupling model of magnetic and machine of the giant magnetostrictive actuator based on the free energy hysteresis characteristics is reasonable. View Full-Text
Keywords: giant magnetostrictive actuator; free energy; hysteresis characteristics; coupling characteristics of magnetic and machine; COMSOL simulation giant magnetostrictive actuator; free energy; hysteresis characteristics; coupling characteristics of magnetic and machine; COMSOL simulation
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Yu, Z.; Wang, T.; Zhou, M. Study on the Magnetic-machine Coupling Characteristics of Giant Magnetostrictive Actuator Based on the Free Energy Hysteresis Characteristics. Sensors 2018, 18, 3070.

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