کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
289331 509675 2008 17 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
An improved method for restraining the end effect in empirical mode decomposition and its applications to the fault diagnosis of large rotating machinery
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
پیش نمایش صفحه اول مقاله
An improved method for restraining the end effect in empirical mode decomposition and its applications to the fault diagnosis of large rotating machinery
چکیده انگلیسی

The purpose of this paper is to introduce an improved slope-based method (ISBM) to restrain the end effect in empirical mode decomposition (EMD). With this method, non-stationary, nonlinear time series can be decomposed efficiently and accurately into a set of intrinsic mode functions (IMFs) and a residual trend. Furthermore, due to its robust end effect restraint ability, the ISBM provides an attractive alternative to the traditional end condition methods. For the purpose of mechanical fault diagnosis, the IMFs derived from the improved EMD are then used to extract the features of faults and remove the interference from environmental noise and some irrelevant components. Industrial case studies on large rotating machinery show that IMF derived from improved EMD is relatively easy to understand and especially useful for analysis of non-stationary, nonlinear time series.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Sound and Vibration - Volume 314, Issues 3–5, 22 July 2008, Pages 586–602
نویسندگان
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