转子磁体混合磁轴承的电磁设计

转子磁体混合磁轴承的电磁设计

目录

摘要 (1)

ABSTRACT (2)

第一章绪论 (3)

1.1磁轴承的优越性 (3)

1.2磁轴承的国内外研究现状及其工业应用 (3)

1.2.1磁轴承国外研究现状及工业应用 (3)

1.2.2磁轴承国内研究现状及工业应用 (4)

1.3磁轴承的分类及其优缺点 (5)

1.3.1磁轴承的分类 (5)

1.3.2各类磁轴承的优缺点 (5)

第二章转子磁体永磁偏置混合磁轴承的结构,工作原理以及等效磁路 (6)

2.1转子磁体永磁偏置混合磁轴承的结构及其工作原理 (6)

2.1.1永磁偏置磁轴承的结构及工作原理 (6)

2.1.2 转子磁体永磁偏置混合磁轴承的结构 (8)

2.1.3 转子磁体永磁偏置混合磁轴承的工作原理 (9)

第三章混合磁轴承的磁路分析计算 (11)

3.1 永磁磁路计算 (11)

3.2电励磁磁路计算 (13)

3.3 最大承载力计算 (18)

3.4 最大起浮力计算 (19)

3.5 混合磁轴承的磁路耦合性分析 (20)

3.6 混合磁轴承的电流刚度和位移刚度 (21)

主要参考资料： (23)

致谢 ........................................................................................................ 错误!未定义书签。

摘要

磁悬浮轴承简称磁轴承，利用磁场力提供无接触支承，实现转子的稳定悬浮。磁轴承的出现是对传统支承技术的革命，它作为一种新的支承形式，其优良的性能和引起了众多学者的浓厚兴趣。磁轴承的研究内容涉及到电磁学、电子学、控制理论、机械学、转子动力学、材料学、和计算机科学等学科。由于国内对磁轴承的研究主要是针对工业上的应用，对航空航天领域的应用研究还处于起步阶段，磁悬浮轴承系统不但涉及控制问题更重要的是电磁设计问题，良好的电磁设计研究对飞轮系统的功耗性能指标要求尤为重要，磁悬浮轴承的电磁设计计算研究是研制高性能飞轮系统的基础。磁悬浮轴承与传统机械轴承相比具有很大的优势，为进一步降低磁悬浮轴承的功耗，永磁偏置混合磁轴承已经得到了广泛重视。本文对转子磁体永磁偏置混合磁轴承进行了深入分析和研究，具体包括以下内容：

首先综述了转子磁体永磁偏置混合磁轴承的优越性、应用及研究现状。

详细介绍了转子磁体永磁偏置混合磁轴承的结构及其工作原理，在此基础上，建立了该磁轴承的等效磁路模型。

采用叠加原理对磁轴承的等效磁路进行了分析计算，推导了该磁轴承的承载力计算表达式，进而对其耦合性及电流刚度和位移刚度进行了分析研究。

最后对该磁轴承进行电磁设计，编制计算机辅助设计程序。

关键字：磁悬浮转子磁体永磁偏置混合磁轴承等效磁路电磁设计

ABSTRACT

Magnetic Suspension bearing referred to as magnetic bearing. The use of magnetic field strength is provided without any contact. To realize the stable suspension of rotor. The magnetic bearing is to the traditional supporting technology revolution. It as a new form of support, It’s excellent properties and wide application prospect make scholars interested. Magnetic bearings research content involves electronic, control theory, mechanics, rotor dynamics, materials science and computer science. Due to internal magnetic bearings research is mainly for industrial applications. But the aerospace applications of research is still in initial stage. Magnetic bearing system not only relates to the control problem, the electromagnetic design is more important. A good electromagnetic design and Research is particularly important to power consumption performance requirement of the flywheel system. Research on the electromagnetic design of magnetic suspension bearing is the development of high performance control system foundation. Magnetic Suspension bearing compared with traditional mechanical bearing has great advantages. Permanent magnet biased magnetic bearing has been extensive attention in order to reduce the power consumption of magnetic Suspension bearing. In this paper, the hybrid-type permanent magnet biased magnetic bearing is analysis and researched in depth. Specifically include the following element:

Fist, reviews the hybrid-type permanent magnet biased magnetic bearing superiority present situation of research and application.

Second, Introduces in detail the hybrid-type permanent magnet biased magnetic bearing structure and its working principle,On the basis of that,establish the model of equivalent magnetic circuit of magnetic bearing.

Third,Analysis and calculation the equivalent magnetic circuit of magnetic bearing by superposition principle. Derivation of the magnetic bearing capacity calculation formula. Then the coupling stiffness and current and displacement stiffness are analyzed.

Fourth, Conduct electromagnetic design for the magnetic bearing, organization the computer aided design program in the end.

Key words：Magnetic Suspension bearing hybrid-type permanent magnet biased magnetic bearing the equivalent magnetic circuit electromagnetic design