| 基于自适应滤波的主动磁悬浮轴承位移传感器故障识别 |
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| 引用本文： | 崔东辉,徐龙祥.基于自适应滤波的主动磁悬浮轴承位移传感器故障识别[J].南京航空航天大学学报,2009,41(3). |
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| 作者姓名： | 崔东辉 徐龙祥 |
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| 作者单位： | 南京航空航天大学机电学院,南京,210016 |
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| 基金项目： | 国家高技术研究发展计划("八六三"计划)，国家自然科学基金(50437010)重点资助项目 |
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| 摘 要： | 针对采用差动式位移传感器的主动磁悬浮轴承系统,从理论上分析了控制器输出信号与转子干扰力及传 感器故障信号之间的关系和自适应滤波器的工作原理,并在此基础提出了基于自适应滤波的传感器故障识别方 法.该方法以两路位移信号的差值为参考信号对控制器的输出信号进行滤波,从而得到控制器输出信号和两路 位移信号的差值之间的相关系数,根据该相关系数的极性即可准确地判断出故障传感器.还采用Matlab对该方 法进行了仿真研究,并在一个主动磁悬浮轴承试验台上进行了试验研究,研究结果表明:该方法可以同时识别传 感器的直流故障争交流故障;转子在静态悬浮和高速旋转时,该方法均可以准确地检测到传感器故障并识别出 故障传感器.
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| 关 键 词： | 涡流位移传感器 故障识别 主动磁悬浮轴承 自适应滤波 |
Fault Diagnosis of Displacement Sensors of Active Magnetic Bearing Based on Adaptive Filtering |
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| Cui Donghui,Xu Longxiang.Fault Diagnosis of Displacement Sensors of Active Magnetic Bearing Based on Adaptive Filtering[J].Journal of Nanjing University of Aeronautics & Astronautics,2009,41(3). |
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| Authors: | Cui Donghui Xu Longxiang |
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| Institution: | College of Mechanical and Electrical Engineering;Nanjing University of Aeronautics & Astronautics;Nanjing;210016;China |
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| Abstract: | Aimed at the relationship between the output signal of controller and the disturb force applied to the rotor,the disturb signal applied to sensors is analyzed according to the active magnetic bearing equipped with different displacement sensors.An adaptive filtering method is also introduced.Based on the principle,a fault diagnosis method for the displacement sensors based on adaptive filtering method is presented.The method can obtain the correlation coefficients between the output signal of the controller... |
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| Keywords: | eddy current displacement sensor fault diagnosis active magnetic bearing adaptive filtering |
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