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Adaptive, on line, statistical method and apparatus for motor bearing fault detection by passive motor current monitoring
Adaptive, on line, statistical method and apparatus for motor bearing fault detection by passive motor current monitoring
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机译:通过被动电动机电流监测来自适应,在线,统计的方法来检测电动机轴承故障
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摘要
A motor current signal is monitored during a learning stage and divided into a plurality of statistically homogeneous segments representative of good operating modes. A representative parameter and a respective boundary of each segment is estimated. The current signal is monitored during a test stage to obtain test data, and the test data is compared with the representative parameter and the respective boundary of each respective segment to detect the presence of a fault in a motor. Frequencies at which bearing faults are likely to occur in a motor can be estimated, and a weighting function can highlight such frequencies during estimation of the parameter.
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