Study on Method for Determining Load Sample Length of the Loader Working Device
[1]Wan Yipin,Song Xuding,Chen Lele.Study on Method for Determining Load Sample Length of the Loader Working Device[J].Journal of Zhengzhou University (Engineering Science),2018,39(03):67-71.[doi:10.13705/j.issn.1671-6833.2017.06.019]
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
39
Number of periods:
2018 03
Page number:
67-71
Column:
Public date:
2018-05-10
- Title:
- Study on Method for Determining Load Sample Length of the Loader Working Device
- CLC:
- -
- Abstract:
- The load measuring system of the loader working device was constructed and the pin-shaft pretreatment load was used as the sample data. The sample length determination method based on central limit theorem was proposed, and the influence of sample length variation on the parameters of load mean amplitude distribution model was discussed. The results show that the proposed method could avoid the data saturation of the spectral density method and the dependence of the trend line fitting method on the model. When the confidence level was 0.95 and the statistical error was 0.05, the critical sample number was 48. The estimated parameters of the distribution model have obvious fluctuation when the number of samples was lower than the critical value. It tends to be stable when the sample number was higher than the critical value. This method had the advantages of high reliability, low test cost and small workload, which could provide an important reference for load measuring of the loader working device.
- References:
- -
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Last Update:
2018-05-03
