主动磁悬浮轴承位移传感器故障识别

J4 ›› 2009, Vol. 20 ›› Issue (23): 2880-2885.

主动磁悬浮轴承位移传感器故障识别

崔东辉;徐龙祥

南京航空航天大学，南京，210016

出版日期:2009-12-10 发布日期:2010-01-29

Fault Diagnosis of Displacement Sensors of Active Magnetic Bearing

Cui Donghui;Xu Longxiang



Nanjing University of Aeronautics and Astronautics, Nanjing, 210016

Online:2009-12-10 Published:2010-01-29

摘要/Abstract

摘要：

针对采用差动位移传感器的单自由度主动磁悬浮轴承，分析了不同传感器发生故障时控制器输出信号和传感器差值信号的频域特征，分析结果表明：当不同传感器发生故障时，传感器差值信号和控制器输出信号在故障频率点的相位差为180°，根据该特征可以识别发生故障的传感器。采用该方法在试验台上进行了试验研究，研究结果表明：当转子以18 000r/min旋转时，该方法可以检测到传感器的故障并识别出故障传感器。

关键词:

主动磁悬浮轴承；位移传感器；故障识别；离散傅里叶变换

Abstract:

Aiming at the single freedom active magnetic bearing(AMB) equipped with differential displacement sensors, the frequency domain characteristics of the controller outputs and the differential outputs of sensors were analyzed herein. The results show that: when different sensors go wrong, the phase difference among the different outputs of sensors and the controller outputs has a 180° difference. According to the feature a sensor fault diagnosis method was put forward. Simulation experiment of the method was presented, experimental research was done using an AMB test rig, the results show that the faulted sensor can be detected when the rotor is rotating in 18 000r/min. 

Key words: active magnetic bearing, displacement sensor;fault diagnosis, discrete Fourier transfer

中图分类号:

TP277

崔东辉, 徐龙祥.

主动磁悬浮轴承位移传感器故障识别

[J]. J4, 2009, 20(23): 2880-2885.

CUI Dong-Hui, XU Long-Xiang.

Fault Diagnosis of Displacement Sensors of Active Magnetic Bearing

[J]. J4, 2009, 20(23): 2880-2885.

[1]	张玉存, 马睿, 付献斌, 孔涛. 基于拓扑传递的耦合机械故障特征提取方法 [J]. 中国机械工程, 2012, 23(4): 435-438.
[2]	陈晓理1, 王仲生1, 姜洪开1, 王峰2. 基于改进样板去噪源分离的轴承复合故障诊断 [J]. 中国机械工程, 2011, 22(17): 2080-2084.