The mechanism and signal characteristics of mechanical vibration ofmotor are set forth. The vibration signal of the ball bearingofmotor was recognized.
This paper presents the methods to distinguish abnormal vibrational noise for rolling bearingofmotor, analyzes the cause of formation, and presents the method to remove it.
A decoupling control approach based on inverse system has been used for the innovative five degree-of-freedom bearing less induction motor, which is multi-variable, nonlinear and high coupling.