The Parameters Identification Of Magnetic Suspension Rotor System And Experimental Research

Active magnetic suspension bearing was a typical mechatronic product. It had a lot of advantages that traditional bearings didn't have. And it had been used widely. The stiffness and the damping of the magnetic suspension bearings could been adjusted on line. The dynamic characteristics of the magnetic suspension system are influenced by its bearing characteristics.The linearization of the electromagnetism force was studied, the influence to the stiffness and the damping of the magnetic suspension rotor system because of the linearization of the electromagnetism force was also studied. The academic study of the magnetic suspension rotor system stiffness and damping identification was carried out, and the physics parameters identification method study of the magnetic suspension rotor system stiffness and damping. In addition, the unbalance responding method to identify the parameters of the magnetic suspension rotor system was done considering that the magnetic suspension bearing and the sliding bearing had the similar bearing characteristics.During the process of the parameters identification of the magnetic suspension rotor system, the unbalance responding was calculated. Then, the stiffness and the damping of the magnetic suspension rotor system was calculated based on the result of the unbalance responding. The unbalance responding experiment to identify the parameters of the magnetic suspension rotor system was designed, and the high frequency noise filtering method was offered. The bearing characteristics of the magnetic suspension rotor system were validated based on the result of the analyse of the vibration and the noise measurement experiment.