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Analysis and modeling of eddy current damping for short-stroke DC linear motor

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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.

Original languageEnglish
Title of host publicationLinear Drives for Industry Applications IX
Pages300-304
Number of pages5
DOIs
StatePublished - 2013
Event9th International Symposium on Linear Drives for Industry Applications, LDIA 2013 - Hangzhou, China
Duration: 7 Jul 201310 Jul 2013

Publication series

NameApplied Mechanics and Materials
Volume416-417
ISSN (Print)1660-9336
ISSN (Electronic)1662-7482

Conference

Conference9th International Symposium on Linear Drives for Industry Applications, LDIA 2013
Country/TerritoryChina
CityHangzhou
Period7/07/1310/07/13

Keywords

  • 3D analytical model
  • Damping force
  • Eddy current
  • Linear motor

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