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Electromechanical modeling of a novel moving magnet linear oscillating actuator

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This article presents a design of a novel moving magnet linear actuator (MMLa) for linear refrigerator compressor. a methodology to estimate the magnetic flux density as well as the magnetic force of MMLa is presented. Considering the simulation time of a 3D FEM software, A combination of 2D FEM with the analytical models makes this technique convenient and expeditious. Using the 2D FEM, the magnetic flux path is segregated into several loops which are divided into finite reluctance zones. the reluctance models for each zone incorporates the effect of armature position to predict the magnetic flux density and linear force incorporating the stator saturation. a 3D FEM simulation is executed to compare the presented models as well as computation times. Furthermore, An analytical approach for evaluating the effect of the excitation frequency and motor constant on the dynamic performance of a linear oscillating actuator is presented and validated experimentally.

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Korean Soc Mechanical Engineers

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Engineering, Mechanical engineering

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Journal of Mechanical Science and Technology

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10.1007/s12206-018-0840-2

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