کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5006564 1461487 2017 25 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Enhancement of fault diagnosis of rolling element bearing using maximum kurtosis fast nonlocal means denoising
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی کنترل و سیستم های مهندسی
پیش نمایش صفحه اول مقاله
Enhancement of fault diagnosis of rolling element bearing using maximum kurtosis fast nonlocal means denoising
چکیده انگلیسی
In this paper, a modified nonlocal means denoising (NL-means) algorithm is proposed for rolling element bearing fault diagnosis. Although, nonlocal means denoising is widely used in image processing, this algorithm is rarely used in 1-D signal processing. The present work deals with application of 1-D nonlocal means denoising method for enhancement of fault signature in rolling element bearings. The parameters for the NL-means method are obtained by maximizing kurtosis value of bearing vibration signal. The proposed method is compared with minimum entropy deconvolution (MED) technique and the results indicate that the proposed method performs better for bearing fault diagnosis. The method is shown to be robust against various noise levels. Further, envelope spectrum of bearing vibration signal is also used to obtain characteristic bearing defect frequencies.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Measurement - Volume 100, March 2017, Pages 157-163
نویسندگان
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