Analysis and Modeling of Eddy Current Damping for Short-Stroke DC Linear Motor

Dong Hua Pan; Jia Xi Liu; Feng Jing Shen; Li Yi Li; Ming Na Ma

doi:10.4028/www.scientific.net/AMM.416-417.300

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 416-417Analysis and Modeling of Eddy Current Damping for...

Analysis and Modeling of Eddy Current Damping for Short-Stroke DC Linear Motor

Abstract:

Eddy currents induced in a conductor in a changing magnetic field produce a damping force proportional to the heat generated in the conductive material. In this paper, the damping force of short-stroke DC Linear Motor (DCLM) is researched, and then model of damping force is established. In the preliminary work, the analytical expression of magnetic field distribution is obtained by the charge model, so the eddy current inducted in the conductor is calculated. Then the damping force is obtained after the equivalent resistance and inductance of conductors are calculated. The formula of damping force is obtained to optimize damping structure of short-stroke DCLM. The accuracy of damping force model is proved by the experiment.

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Periodical:

Applied Mechanics and Materials (Volumes 416-417)

Pages:

300-304

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.416-417.300

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Online since:

September 2013

Authors:

Dong Hua Pan, Jia Xi Liu, Feng Jing Shen, Li Yi Li, Ming Na Ma

Keywords:

3D Analytical Model, Damping Force, Eddy Current, Linear Motor

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