Dynamic finite element analysis on spindle of vibratory motor

H_∞ control based on LMI for electromechanical vibration of a rolling mill main drive system;

The normal control of speed and current closed loop often lead to the phenomenon of electromechanical vibration and broken strip.

The output and quality of metal plate and strip are heavily affected by electromechanical vibration in rolling process.

A new method of real-time rotor eccentric load locating was proposed,which has solved the difficulty of real-time locating the rotor eccentric load accurately in high rotor speed,based on analyzing the rule and the cause of motor vibration,researching into the effect on motor vibration changing of eccentric loads with different weight and the quantitative analysis of motor vibration acceleration.

Because the wavelet packet decomposition is very sensitive to signal of the strange point, this characteristics can be used to follow the velocity signal of motor vibration.

This paper states the princilpe,construction design features and electromagnetic design features of vibration motor.

It focuses on the experimect of sensory feedback which based on vibration motor after researching on the principle of sensory feedback.

With oscillating electromotor as the vibrating filiation,and by the invert synchronous control circuit,the thesis studies and designs double oscillating electromotor synchronous vibrating griddle(DEG) on the base of the practical problem.