In order to study the vibration characteristics of high-speed permanent magnet motor under
high speed operating conditions, it was simplified to a rotor-bearing system, a mathematical …

In this article, the coupling effects of the unbalanced magnetic pull and ball bearing on
nonlinear vibration of the three-phase asynchronous motor are investigated with the …

In the 45kW high-speed permanent magnet machine test rig, permanent magnet machine's
raising speed experiment was made to research the influence of bearings supply pressure …

In this paper, the unbalanced magnetic pull and eccentric mass force which caused vibration
of the rotor are introduced. The virtual displacement method is employed to solve the two …

The spherical shell rotor is contained in the multi-degree-of-freedom permanent magnet
synchronous motor. When the rated speed of motor is close to the critical speed, the motor …

In this paper, the stiffness analysis and critical speed calculation of the whole rotor system
including the rotor and rotor shaft of high-speed permanent magnet motor are carried out …

Multi-degree-of-freedom motors have attracted more and more attentions, and the liquid
suspension multi-degree-of-freedom PM motor is regarded as one of the research hotspots …

In order to solve problems confronted when the magnetic suspended rotor pass through the
first bending critical speed, an integrated vibration control method is presented. To ensure …