The dynamic balance is a key question in high-speed revolving systems.The article has studied the unbalanced vibration abatement measure of the high-speed electric main axle and designed a compound on-line dynamic balance device.First

by electromagnetic field coupling

an diameter-directed rotating electromagnetic force can be formed on the weight-added plane to realize a real-time and on-line precision compensation.Secondly

considering that the rotating electromagnetic force consumes a lot of energy and its mechanism internal stress is heavy

we used the influence coefficient controlling strategy

driving the quality block to migrate with the vector force composed by the revolving polar coordinate on the balance plate.Thus

the rotor's barycenter was in its center

and with the rotating electromagnetic force vanishing

the main axle system realized the final dynamic balance.Moreover

the simulation result by Adams and Matlab proves that the vibration can be reduced 95% at the speed of 10 000 r/min

and the design achieves the balance standard of high-speed main axles.