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International Journal of Automotive Engineering، جلد ۶، شماره ۱، صفحات ۲۰۷۵-۲۰۸۱
عنوان فارسی
چکیده فارسی مقاله
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عنوان انگلیسی Studying Influence of Preheating Conditions on Design Parameters of Continuous Paint Cure Ovens
چکیده انگلیسی مقاله This paper concentrates on a new procedure which experimentally recognises gears and bearings faults of a typical gearbox system using a least square support vector machine (LSSVM). Two wavelet selection criteria Maximum Energy to Shannon Entropy ratio and Maximum Relative Wavelet Energy are used and compared to select an appropriate wavelet for feature extraction. The fault diagnosis method consists of three steps, firstly the six different base wavelets are considered. Out of these six wavelets, the base wavelet is selected based on wavelet selection criterion to extract statistical features from wavelet coefficients of raw vibration signals. Based on wavelet selection criterion, Daubechies wavelet and Meyer are selected as the best base wavelet among the other wavelets considered from the Maximum Relative Energy and Maximum Energy to Shannon Entropy criteria respectively. Finally, the gearbox faults are classified using these statistical features as input to LSSVM technique. The optimal decomposition level of wavelet is selected based on the Maximum Energy to Shannon Entropy ratio criteria. In addition to this, Energy and Shannon Entropy of the wavelet coefficients are used as two new features along with other statistical parameters as input of the classifier. Some kernel functions and multi kernel function as a new method are used with three strategies for multi classification of gearboxes. The results of fault classification demonstrate that the LSSVM identified the fault categories of gearbox more accurately with multi kernel and OAOT strategy.
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نویسندگان مقاله z بنی عامریان | z. baniamerian


نشانی اینترنتی http://www.iust.ac.ir/ijae/browse.php?a_code=A-10-63-114&slc_lang=fa&sid=en
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