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Abstract
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Article Information:
Evaluation of Variation Coefficient of Slewing Bearing Starting Torque Using Bootstrap Maximum-Entropy Method
Xintao Xia, Yanyan Meng and Yuanyuan Qin
Corresponding Author: Xintao Xia
Submitted: December 10, 2012
Accepted: January 19, 2013
Published: July 30, 2013 |
Abstract:
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This study proposed the bootstrap maximum-entropy method to evaluate the uncertainty of the starting torque of a slewing bearing. Addressing the variation coefficient of the slewing bearing starting torque under load, the probability density function, estimated true value and variation domain are obtained through experimental investigation of the slewing bearing starting torque under various loads. The probability density function is found to be characterized by variational figure, scale and location. In addition, the estimated true value and the variation domain vary from large to small along with increasing load, indicating better evolution of the stability and reliability of the starting friction torque. Finally, a sensitive spot exists where the estimated true value and the variation domain rise abnormally, showing a fluctuation in the immunity and a degenerative disorder in the stability and reliability of the starting friction torque.
Key words: Small sample, slewing bearing, starting friction torque, uncertainty, variation coefficient, ,
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Cite this Reference:
Xintao Xia, Yanyan Meng and Yuanyuan Qin, . Evaluation of Variation Coefficient of Slewing Bearing Starting Torque Using Bootstrap Maximum-Entropy Method. Research Journal of Applied Sciences, Engineering and Technology, (12): 2213-2220.
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ISSN (Online): 2040-7467
ISSN (Print): 2040-7459 |
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