Load Spectrum Compilation Based on Nonparametric Statistical Extrapolation

Zhi Qiang Xu; Hong Jian Wang; Ming Yao Yao

doi:10.4028/www.scientific.net/AMR.694-697.271

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 694-697Load Spectrum Compilation Based on Nonparametric...

Load Spectrum Compilation Based on Nonparametric Statistical Extrapolation

Abstract:

Considering the special load characteristics of the wheel loader, thispaper focus on compiling the load spectrum of the transmission of the wheelloader using the nonparametric statistical extrapolation method (NSEM). In thisprocess, the determination of the kernel function shape is the critical issue,which has been discussed in detail. Before extrapolating the sample loadspectrum, the signal denoising of the field-tested time-history load signals isperformed. After that, the sample load cycles are obtained using the rainflowcounting method and the corresponding kernel function shape is determined. Thenthe NSEM of rainflow matrix is proposed, by which the whole-life load spectrumis estimated. The proposed extrapolation method can well realize the estimationof the load cycles that do not appear in sample load cycles but may exist inthe whole-life load history.

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Periodical:

Advanced Materials Research (Volumes 694-697)

Pages:

271-277

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.694-697.271

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Online since:

May 2013

Authors:

Zhi Qiang Xu, Hong Jian Wang, Ming Yao Yao

Keywords:

Kernel Function, Load Spectrum, Nonparametric Extrapolation, Rainflow

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