Application of EEMD Modal Decomposition Algorithm in Noise Suppression of Vibration Data
The response of bridge structure is easily disturbed by environmental noise,which leads to the failure to extract the modal components of vibration response signal accurately.In response to the limitations of existing noise reduction methods,this paper in-troduces the EEMD empirical mode decomposition algorithm to denoise bridge vibration signals.Mathematical simulation experi-ments were conducted to analyze the effectiveness of EEMD in noise reduction.The results indicate that this method effectively fil-ters out Gaussian white noise superimposed on known curves and significantly enhances the signal-to-noise ratio.In actual measured vibration curves,EEMD denoising successfully removes random errors and abnormal fluctuations present in the data,resulting in a smoother vibration curve.Additionally,the FFT spectrum of the denoised data provides a clearer and more continuous representation of the signal.
bridge structureEEMD noise reduction methodvibration data
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