Approximate Method of Spares Demand Prediction for Weibull Distribution Items Based on Piecewise Function

Authors

Songshi Shao, 1. College of Naval Architecture and Ocean Engineering, Naval University of Engineering, Wuhan 430033, China; ;
Zhihua Zhang, 1. College of Naval Architecture and Ocean Engineering, Naval University of Engineering, Wuhan 430033, China; ;
Xiaojie Mo, 2. System Design Institute of Hubei Aerospace Technology Academy, Wuhan 430074, China;

Abstract

Abstract: Demand prediction model for spare parts with Weibull distribution involves multiple infinite series, therefore, spares demand calculation is a difficult issue. The approximate calculation method generally used is often subject to large errors. According to the principle of renewal function, the approximated demand calculation method for spares of Weibull distribution using piecewise function to approximate the renewal function is proposed. It effectively avoids the issue of computational complexity for spares demand prediction. Theoretical analysis shows that the proposed approximated algorithm ensures the calculation result of spares demand is less than that of engineering approximation algorithm. According to the given example, the simulation verifies that the proposed approximation algorithm has a better approximation effect, meets the practical support demand as well as the engineering demand.

Recommended Citation

Shao, Songshi; Zhang, Zhihua; and Mo, Xiaojie (2021) "Approximate Method of Spares Demand Prediction for Weibull Distribution Items Based on Piecewise Function," Journal of System Simulation: Vol. 33: Iss. 6, Article 24.
DOI: 10.16182/j.issn1004731x.joss.20-0151
Available at: https://dc-china-simulation.researchcommons.org/journal/vol33/iss6/24

First Page

1444

Revised Date

2020-07-23

DOI Link

https://doi.org/10.16182/j.issn1004731x.joss.20-0151

Last Page

1450

CLC

TP391.9

Recommended Citation

Shao Songshi, Zhang Zhihua, Mo Xiaojie. Approximate Method of Spares Demand Prediction for Weibull Distribution Items Based on Piecewise Function[J]. Journal of System Simulation, 2021, 33(6): 1444-1450.

DOI

10.16182/j.issn1004731x.joss.20-0151