Analytical modeling and feedback control of the magnetic levitation force for an induction-type bearingless motor

被引：0

作者：

Nian, Heng ^{[1
]}

He, Yi-Kang ^{[1
]}

机构：

[1] Coll. of Elec. Eng., Zhejiang Univ., Hangzhou 310027, China

来源：

Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering | 2003年 / 23卷 / 11期

关键词：

Closed loop control systems - Control system analysis - Feedback control - Magnetic levitation - Operations research;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Due to the load disturbance and detecting error of radial displacement, the centers of stator and rotor of a bearingless motor do not coincide with each other in practical operation, which will influence the control performance of stable suspension. Based on its operation principle, a relatively accurate analytical expression of the magnetic levitation force for an induction-type bearingless motor is proposed in this paper with the eccentricity in the location of stator and rotor taking into consideration, and its computation accuracy is verified by ANSOFT, an electro-magnetic field analysis software of electrical machines. Applying this analytical levitation force model, the real-time observation of magnetic levitation force can be realized, the closed-loop control of levitation force is then implemented on the basis of air-gap-flux-oriented decoupling control system of the bearingless motor. Simulation study verifies the effectiveness of the approach in improving the static and dynamic performance of an induction-type bearingless motor.

引用

页码：139 / 144