China Safety Science Journal ›› 2018, Vol. 28 ›› Issue (10): 31-37.doi: 10.16265/j.cnki.issn1003-3033.2018.10.006

• Safety Systematology • Previous Articles     Next Articles

Method for predicting truck's failure rate in open-pit mine based on Mallat algorithm and ARMA model

BAI Runcai1, CHAI Senlin2, LIU Guangwei2, LI Haoran2, ZHANG Jing2   

  1. 1 Liaoning Academy of Mineral Resources Development and Utilization Technology and Equipment Research Institute,Liaoning Technical University, Fuxin Liaoning 123000, China
    2 School of Mining, Liaoning Technical University, Fuxin Liaoning 123000, China
  • Received:2018-07-11 Revised:2018-08-29 Online:2018-10-28 Published:2020-11-20

Abstract: In order to improve the predictive accuracy of open-pit mine transport trucks failure rate, reduce accuracy loss caused by the non-stationary time series data and solve difficulty in the model parameter estimation, this paper puts forward a new method for predicting the failure rate of trucks based on wavelet analysis and ARMA. First of all, according to the characteristics of the non-stationary time series data, this paper first uses Mallat algorithm to process the original data, at the same time, the original time series is decomposed into a set of approximation coefficients and sets of detail coefficients. Then, the wavelet coefficients after single branch reconstruction are fitted and predicted by ARMA model. To effectively solve the ARMA model identification and parameter estimation problem, this paper introduces the relevant variables of the original model, and parameter estimation problem can be converted to the parameter estimation problem of multi-dimensional Gauss distribution with the related variables. Finally, ordering and parameter estimation of ARMA model are realized by calculating the typical correlation variables in the model. Simulation results show that the mean value of absolute error is 0.322, and the mean value of relative error is 5.49%, that compared with other algorithm models, this combination model has higher fitting precision, and that the model is feasible and effective in predicting the failure rate of trucks.

Key words: open-pit mine truck, failure rate, prediction method, wavelet analysis, auto-regressive and moving average model (ARMA)

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