APPARATUS AND METHOD FOR ROTATIONAL POSITION ERROR ADJUSTING BY ROTATING BODY IMBALANCE IN ROTATING BODY USING MAGNETIC BEARING

摘要

An apparatus and a method for correcting a rotation position error are provided to improve stability of a system by correcting a rotation position error due to imbalance of a rotator. An apparatus for correcting a rotation position error comprises a control part(100), a lookup table(200), a position error correcting part(300), and a magnetic bearing plant(400). The control part controls a position of a rotation shaft according to a rotation position error. An adaptive gain function and a phase function of a rotation speed are looked up in the lookup table. The position error correcting part corrects a position error about the rotation position error based on a lookup result in the lookup table. The magnetic bearing plant receives a result of the control part and the position error correcting part, and outputs a position of the magnetic bearing plant by calculating an external turbulent force due to imbalance of a rotator.