Detecting stationarity and nonlinearity in propeller singing signal |
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Authors: | Da-peng Yu De-you Zhao Yu Wang |
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Institution: | [1]Department of Naval Architecture, Dalian University of Technology, Dalian 116085, Liaoning, China [2]Naval Academy of Armament, Beijing 100161, China |
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Abstract: | The propeller singing is such a complex fluid-structure coupling phenomenon that needs to study intensively. In this paper,
the stationarity of propeller singing signal is tested by the recurrence plot technique. According to surrogate data, the
singing time series has nonlinearity character. And the nonlinearity of time series is not caused by the static nonlinear
measurement function but the intrinsic character itself based on further research. The results provide an objective basis
for analyzing the propeller singing signal with the nonlinear time series technique. |
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Keywords: | |
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