Industrial application of position sensorless active magnetic bearings

被引：7

作者：

Mizuno, T

Bleuler, H

Tanaka, H

Hashimoto, H

Harashima, F

Ueyama, H

机构：

[1] YOKOKAWA ELECT CO LTD, YOKOHAMA, KANAGAWA, JAPAN

[2] UNIV TOKYO, TOKYO, JAPAN

来源：

ELECTRICAL ENGINEERING IN JAPAN | 1996年 / 117卷 / 05期

关键词：

sensorless magnetic bearing; observer; magnetic suspension; turbomolecular pump; negative stiffness; unbalance compensation;

D O I：

10.1002/eej.4391170511

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 [电气工程]; 0809 [电子科学与技术];

摘要：

Active magnetic bearings (AMBs) are applied to turbomolecular pumps (TMPs) and milling spindles. However, their application areas are limited because they are costlier and require larger space than conventional mechanical bearings. Omitting position sensors from AMBs is one of the promising methods to solve such problems. An additional merit is that rotors can be shortened to have a higher critical speed by removing sensor targets from the rotor. The sensorless operation of AMBs has already been achieved in several instruments developed for experimental study. In this research, the sensorless magnetic suspension method is applied to a TMP manufactured as an industrial product, and it is demonstrated that sensorless AMBs can suspend a highspeed rotor.

引用

页码：124 / 133

页数：10