Research on a novel high stiffness axial passive magnetic bearing for DGMSCMG

被引：13

作者：

Sun, Jinji ^{[1
]}

Wang, Chun'e ^{[2
]}

Le, Yun ^{[1
]}

机构：

[1] Beihang Univ, Sch Instrument Sci & Optoelect Engn, Novel Inertial Instrument & Nav Syst Technol, Key Lab Fundamental Sci Natl Def, Beijing 100191, Peoples R China

[2] Beijing Inst Automat Control Equipment, Beijing 100074, Peoples R China

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2016年 / 412卷

基金：

中国国家自然科学基金;

关键词：

Axial passive magnetic bearing; Equivalent magnetic circuit; End magnetic flux; DGMSCMG; DESIGN; FORCE;

D O I：

10.1016/j.jmmm.2016.03.086

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

To increase the displacement stiffness and decrease power loss of double gimbals magnetically suspended control momentum gyro (DGMSCMG), this paper researches a new structure of axial passive magnetic bearing (APMB). Different from the existing APMB, the proposed APMB is composed of segmented permanent magnets and magnetic rings. The displacement stiffness and angular stiffness expressions are derived by equivalent magnetic circuit method and infinitesimal method based on the end magnetic flux. The relationships are analyzed between stiffness and structure parameters such as length of air gap, length of permanent magnet, height of permanent magnet and end length of magnetic ring. Besides, the axial displacement stiffness measurement method of the APMB is proposed, and it verified the correctness of proposed theoretical method. The DGMSCMG prototype is manufactured and the slow-down characteristic experiment is carried out, and the experimental result reflects the low power loss feature of the APMB. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：147 / 155

页数：9

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