アキシャル型セルフベアリングモータの傾き角制御

抄録

Recently pumps having magnetic bearings are used and developed. Although magnetic bearing motors have advantages of no friction loss, no lubrication and so on, they are not widely used because of their high cost and large size. To solve these problems, an axial self-bearing motor (ASBM) is proposed. The ASBM has functions of producing rotation torque and controlling axial position. It enables downsizing and reducing cost of magnetic bearings, but it cannot damp vibration of radial direction and tilting direction. It also cannot give a rotor high stiffness as to those directions. Therefore, we propose controlling tilt angle of rotor with the ASBM. In this paper, a structure of the ASBM and a design of the device are introduced, and experimental results are shown.