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Kinetic torque and dynamic behavior in a magnetic levitation device

 

作者: J. F. Bird,  

 

期刊: Journal of Applied Physics  (AIP Available online 1982)
卷期: Volume 53, issue 3  

页码: 1326-1333

 

ISSN:0021-8979

 

年代: 1982

 

DOI:10.1063/1.330622

 

出版商: AIP

 

数据来源: AIP

 

摘要:

A magnetic torque is induced by motions of a cylindrical metal shell that is being levitated around an alternating‐current filament—a suspension device analyzed previously for the motionless case. This kinetic magnetic torque is calculated for shell‐filament configurations in which the shell rotates on its own axis while revolving in circular orbits about the parallel current axis. The calculated torque is given numerically over a wide range of device parameters via a set of universal curves, with analytic formulae for limiting cases. The torque results are used to assess the dynamics of the suspension under various conditions, including external magnetic spin damping and extraneous orbital momentum generation.

 

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