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本文介绍了在检测大机组轴振动的电涡流传感器输出信号中所包含的机组状态信息成分及其意义，并提出了各种状态信息的提取和分析处理方法．通过在几套研制的在线状态监测系统中的实际应用，证明所提出的方法是具有工程实用意义和切实可行的。
This paper introduces the components and their significance of the unit state information contained in the eddy current sensor output signal for detecting the shaft vibration of a large unit, and presents various methods for extracting and analyzing state information. The practical application of several online condition monitoring systems developed in this paper proves that the proposed method is of practical and practical engineering.