Analysis of the Periodically Non-stationary Structure for Modulated Vibration Signal

Ihor Javorskyj,Roman Yuzefovych,Oleh Lychak,Pavlo Semenov,Mykola Varyvoda

2023 IEEE 13th International Conference on Electronics and Information Technologies (ELIT)（2023）

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摘要

The vibration time series are analyzed using methods for periodically non-stationary random processes (PNRP). Band-pass filtering and Hilbert transform are used to extract quadrature components. The cross-covariance structure of quadratures is considered. It was shown that cross-covariances of different order quadratures result in periodical non-stationarity of the vibration signal.

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关键词

periodically non-stationary random signals,vibrations,Hilbert transform,quadratures,modulation

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