电机定子电流信号一般用电流霍尔检测，然后通过滤波器进行滤波得到。

The stator current is measured by using current whale, and then filtered.

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利用图形缩放技术，对笼型异步电动机转子正常及断条情况下的定子电流信号希尔伯特模式做了研究，并概括出内在规律。

The Hilbert pattern of the induction motor stator current, which is a certain graph in nature, is investigated, using the graph zooming technique.

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通过对气隙转矩的计算处理，利用小波脊线提取气隙转矩中转子断条故障特征频率分量，克服了分析定子电流信号时的不足，实现了电机转子断条故障的在线监测。

The broken bars faulty can be on-line monitored by extracting feature component based on wavelet ridge. Calculation of air-gap torque overcomes the disadvantages which based on current signal.

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