کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6956175 1451866 2015 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A technique for the vibration signal analysis in vehicle diagnostics
ترجمه فارسی عنوان
یک تکنیک برای تجزیه و تحلیل سیگنال ارتعاش در تشخیص وسایل نقلیه
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر پردازش سیگنال
چکیده انگلیسی
The suggested technique is based on mathematical methods of the lower triangular-orthogonal (LQ) factorisation and the singular value decomposition (SVD) of observation subspaces computed on a vibration time series after their angular resampling without any transformations in the frequency domain. The applied algorithm of data processing filters excessive information and allows the selection of diagnostic features (essential from the maintenance point of view) and generates the empirical model and matrix residuals assessed in the no-fault state as being 'zero'. Then, statistical feature vectors, for which the averaged successive singular values of the residuals of the observation subspaces of the vibration signals were assumed as components, were analysed. As a result of this procedure the vectors of lower dimensions reduced to components, allowing the classification of observations within all defined classes, were obtained. On the basis of these vectors a scalar measure - sensitive to the kind of defect - was proposed and verified.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Mechanical Systems and Signal Processing - Volumes 56–57, May 2015, Pages 173-180
نویسندگان
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