Design of magnetic bearing displacement detection system based on winding inductance

SUN Jianzhong; WANG Haochen; SUN Feiran

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Design of magnetic bearing displacement detection system based on winding inductance

Design & Manufacture | 更新时间：2026-05-18

- Design of magnetic bearing displacement detection system based on winding inductance
- Vol. 45, Issue 5, Pages: 83-87(2026)
- 作者机构：
  
  1. 大连理工大学电气工程学院,辽宁,大连,116024
  2. 大连交通大学机械工程学院,辽宁,大连,116028
- 作者简介：
- 基金信息：
- DOI：
  CLC： TH133;TP212
- Published：2026
- 稿件说明：
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SUN Jianzhong, WANG Haochen, SUN Feiran. Design of magnetic bearing displacement detection system based on winding inductance[J]. 2026, 45(5): 83-87.
DOI：

SUN Jianzhong, WANG Haochen, SUN Feiran. Design of magnetic bearing displacement detection system based on winding inductance[J]. 2026, 45(5): 83-87. DOI：

摘要

针对位移传感器的存在导致系统结构复杂、传感器失效导致系统失稳等问题，设计一种基于绕组电感的磁悬浮轴承位移检测系统。首先，将磁极边缘效应、磁滞和涡流效应全考虑在内，完善电感模型。然后，利用磁悬浮轴承各绕组电感包含转子位移信息的特点，建立绕组电流和转子位移的关系。采用非线性参数估计方法，搭建了磁悬浮轴承位移检测系统。最后，通过仿真和实验对系统的有效性进行验证。结果表明：本文设计的磁悬浮轴承位移检测系统具有较好的位移检测精度，可以实现无传感器条件下磁悬浮轴承的稳定运行。

Abstract

A magnetic bearing displacement detection system based on winding inductance is designed to address the issues such as complex system structure caused by displacement sensor presence and system instability caused by sensor failures.Firstly

the edge effect of magnetic poles

hysteresis effect

and eddy current effect are all taken into account to improve the inductance model.Then

using characteristics that the inductance of each winding of the magnetic bearing contains rotor displacement information

the relationship between the winding current and the rotor displacement is established.A displacement detection system for the magnetic bearing is constructed using a nonlinear parameter estimation method.Finally

the effectiveness of the system is verified through simulation and experiments.The results show that the designed displacement detection system for the magnetic bearing has good displacement detection precision and can achieve stable operation of magnetic bearings under sensorless condition.

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