سال انتشار: ۱۳۹۱
محل انتشار: بیستمین کنفرانس سالانه مهندسی مکانیک
تعداد صفحات: ۴
Behrooz Attaran – Graduate Student, Mechanical Engineering Department, University of Shahid Chamran
Afshin Ghanbarzadeh – Assistant Professor, Mechanical Engineering Department, University of Shahid Chamran
Reza Zaeri – 3Graduate Student, Mechanical Engineering Department, University of Shahid Chamran
Rolling element bearings are critical mechanical components in rotating machinery. Fault detection and diagnosis in the early stages of damage are necessary to prevent their malfunctioning and failure during operation. Vibration monitoring is the most widely used and cost-effective monitoring technique to detect, locate and distinguish faults in rolling element bearings. In this paper, an efficient method is proposed to extract optimizing features. The method employs capability features as well as the Bees Algorithm to obtain faults detection accurately and separably. This work presents an algorithm using optimum radial basis neural network by the use of the Bees Algorithm for automated diagnosis of localized faults in rolling element bearings. Optimum complementary capability values extracted from time-domain signals, and complex cepstral analysis, and real cepstrum, and minimum phase reconstruction, and chirp z-transform, and discrete cosine transform, and discrete Fourier transform, and envelope analysis signal and the Hilbert transform are used as input features for the neural network. Optimum radial basis trained neural network are able to classify different states of the bearing with 100% accuracy. The proposed procedure requires only a few input features. Effectiveness of the proposed method is illustrated using the bearing vibration data obtained experimentally.