두 장의 원판형 회전자를 갖는 로렌츠형 자기 베어링 내장 전동기의 개발

Development of Lorentz Force Type Integrated Motor-Bearing System in Dual Rotor Disk Configuration

In this paper, dual rotor disk configuration with a coreless stator is proposed for the Lorentz force type integrated motor bearing system. An experimental compensation for the effects of high order harmonics is performed using the digital controller of the experimental setup. The runout profile and rotor unbalance are also identified by the extended influence coefficient method. The experimental results confirm that this compensation method effectively attenuates the rotor vibration all over the operating range of rotational speed.