Order analysis plays an important role in non-stationaryvibration signal processing in rotating machinery.
旋转机械非稳定信号阶比分析技术，是旋转机械特征分析的重要内容。
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In order to process the non-stationaryvibration signals such as speed up or speed down signals effectively, the order bispectrum technique was presented.
Through ARIMA model and standardization, the non stationaryvibration series acquired in the field were transformed to stationary time series normally distributed.