Investigation of Rotor Radial Rotating Error upon AMB System

摘要

This paper first suggests the use of the Fourier frequency transmission method of two dimensions function (2D FFT) to analyze radial rotating errors that occurred in a rotor. Based on this method a magnetic rotor is measured. The authors point out that the main cause to affect radial rotating accuracy of the rotating shaft at a high speed is the dynamic imbalance of the shaft itself. Finally the feed-forward control scheme is suggested to improve the accuracy of the shaft in an active magnetic bearing (AMB) system.