China Mechanical Engineering ›› 2010, Vol. 21 ›› Issue (8): 889-892,907.

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Measurement Method of Stiffness for Magnetic Bearings 

Wang Xiaoguang;Gao Changsheng

  1. Wuhan University of Technology,Wuhan,430070
  • Online:2010-04-25 Published:2010-05-05
  • Supported by:
    National Natural Science Foundation of China(No. 50675163)



  1. 武汉理工大学,武汉,430070
  • 基金资助:
    National Natural Science Foundation of China(No. 50675163)


There exist two different definitions of stiffness in academic study of magnetic bearings.Two definitions of stiffness are different from the aspect of rotor force analysis and control transfer function.In allusion to the two different definitions of stiffness,a measurement method of stiffness for magnetic bearings was given and the experimental measurement system of the magnetic bearing stiffness was designed.The experimental system can measure the stiffness of magnetic bearings when the rotor in all the states of static suspension,rigid rotation and flexible rotation. 

Key words: magnetic bearing, stiffness, measurement method, measurement device




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