Abstract: The electromechanical
coupling vibration system of the rotor of the AMBs (Active
Magnetic Bearings) acted by PD or PID adjuster is studied. On
the basis of changing the voltage control to the electric
current control and introducing the nonlinear element, the
self-excited vibration and Hopf bifurcation is studied using the
morden analysis method in the nonlinear dynamics-Averaging
method and center manifold theorem, as the result, the
relationship between the vibration of rotor and the parameters
of control system is analyzed.
Key words:
Control system Averaging method Centre manifold theorem
* This project is supported by National Natural Science Foundation of
China. Manuscript received on December 13, 1995
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