不同衰减函数的钢丝绳漏磁信号自适应降噪

doi:10.3969/j.issn.1000-1158.2024.10.16

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Abstract The effects of three different attenuation functions, namely, hyperbolic function, exponential function and linear function, on the noise reduction effect of wire rope magnetic flux leakage signal are discussed.Adaptive shift average denoising is applied to noisy signals with damage, and the denoising effect is compared and analyzed using signal-to-noise ratio and correlation number.The results show that for the two types of magnetic leakage signals used, the maximum SNR of the denoising signal using hyperbolic functions can reach 14.1041dB and 10.8349dB, which is greater than the corresponding SNR obtained from exponential and linear functions.The output curve obtained is smooth and has better denoising effect.Meanwhile, as the noise increases, the correlation number of denoised signals using hyperbolic functions approaches 1 faster, exhibiting better dynamic characteristics.

Key words： magnetic flux leakage testing steel wire rope strong noise adaptive denoising hyperbolic functions shift average method attenuation function

Received: 25 September 2023 Published: 30 September 2024

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TB972

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	Articles by authors
	WU Dong
	HUANG Shengping
	ZHOU Lifeng
	SUI Xianjun
	SONG Hongzhi
	YANG Jianhua

Cite this article:

WU Dong,HUANG Shengping,ZHOU Lifeng, et al. Adaptive Denoising of Magnetic Flux Leakage Signals of Steel Wire Ropes Based on Different Attenuation Functions[J]. Acta Metrologica Sinica, 2024, 45(10): 1549-1554.

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http://jlxb.china-csm.org:81/Jwk_jlxb/EN/10.3969/j.issn.1000-1158.2024.10.16 OR http://jlxb.china-csm.org:81/Jwk_jlxb/EN/Y2024/V45/I10/1549

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