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Magnetic Analysis of Switched Reluctance Actuators in Levitated Linear Transporters

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4 Author(s)
Zhen Gang Sun ; Dept. of Electr. Eng., Hong Kong Polytech. Univ., Kowloon, China ; Cheung, N.C. ; Shi Wei Zhao ; Wai-Chuen Gan

A novel linear magnetic levitated actuator using the switched reluctance principle is addressed in this paper. This actuator can be applied to precise motion control of automation machines. The proposed system has the advantages of a simple and robust structure, and direct drive capability. The contactless structure eliminates mechanical wear, friction, noise, and heat generation. To verify the feasibility of the proposed system, the magnetic levitated force is analyzed by magnetic circuit analysis (MCA) and by finite-element analysis (FEA). A prototype structure is fabricated, and experiments are performed with the actual hardware. Results of the MCA and the FEA are both compared with the results obtained from the hardware experiments. They all agree with the proposed design methodology. This paper can form a useful reference in the design of a mechanical structure for magnetic levitated switched reluctance actuators.

Published in:

Vehicular Technology, IEEE Transactions on  (Volume:59 ,  Issue: 9 )

Date of Publication:

Nov. 2010

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