کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6753739 1430814 2018 16 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A combined approach for weak fault signature extraction of rolling element bearing using Hilbert envelop and zero frequency resonator
ترجمه فارسی عنوان
یک روش ترکیبی برای استخراج علامت ضعف ضعیف عنصر نورد با استفاده از پوشش هیلبرت و رزوناتور فرکانس صفر
کلمات کلیدی
گسل گسل، تشخیص سیگنال ضعیف، رزوناتور فرکانس صفر، پوشش هیلبرت،
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی
Periodic impulses arise due to localised defects in rolling element bearing. At the early stage of defects, the weak impulses are immersed in strong machinery vibration. This paper proposes a combined approach based upon Hilbert envelop and zero frequency resonator for the detection of the weak periodic impulses. In the first step, the strength of impulses is increased by taking normalised Hilbert envelop of the signal. It also helps in better localization of these impulses on time axis. In the second step, Hilbert envelope of the signal is passed through the zero frequency resonator for the exact localization of the periodic impulses. Spectrum of the resonator output gives peak at the fault frequency. Simulated noisy signal with periodic impulses is used to explain the working of the algorithm. The proposed technique is verified with experimental data also. A comparison of the proposed method with Hilbert-Haung transform (HHT) based method is presented to establish the effectiveness of the proposed method.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Sound and Vibration - Volume 419, 14 April 2018, Pages 436-451
نویسندگان
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