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Vol.2(2006) No.2,pp.117-121 Numerical Simulation of Nonlinear Dynamical Behaviors of Active Magnetic Bearing-rotor System

By Miao Lu, Lingmei Zhang, Baocang Sun and Huijuan Fan


Abstract: In this paper, the nonlinear dynamical behaviors of an active magnetic bearing-rotor system are investigated using numerical simulation. Firstly, the nonlinear magnetic force is obtained by Taylor series. Secondly, the primary-internal resonance of an AMBRS(active magnetic bearing)-rotor system is studied with the help of Lung-Kutta method. To analyze the motion characters of system, some Poincare maps are drawn and several Lyapunov exponents are calculated. The conclusion:the chaotical phenomenon by period-doubling bifurcation and ring surface break period-doubling bifure are respectively discovered.Especially, a chaotic attractor on Poincare map that is extremely sensitive to initial value is discovered

Topics: active magnetic bearing-rotor system, nonlinear dynamics, bifurcation
Year: 2006
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