任意寿命分布单元表决系统备件需求量的解析算法

系统工程与电子技术

任意寿命分布单元表决系统备件需求量的解析算法

刘任洋, 李庆民, 王慎, 李华

(海军工程大学兵器工程系, 湖北武汉 430033)

出版日期:2016-02-24 发布日期:2010-01-03

#br# Analytical algorithm of spare demand for voting system of any life distribution units

LIU Renyang, LI Qingmin, WANG Shen, LI Hua

(Department of Weaponry Engineering, Naval University of Engineering, Wuhan 430033, China)

Online:2016-02-24 Published:2010-01-03

摘要/Abstract

摘要：

表决结构广泛存在于装备的可靠性设计中。针对表决系统备件需求计算困难、不准确的问题,提出了一种基于寿命分布等效的表决系统备件需求量计算方法。首先通过R等效方法将系统中的非指数单元转化为指数单元;而后将多指数单元表决系统等效为伽马系统并给出等效伽马系统参数的经验计算公式;在此基础上以可用度为保障约束指标,利用伽马分布的可加性得到备件计算结果;最后在实际算例中,通过与仿真结果的比较表明,此解析算法对于指数单元具有较高精度,对于非指数单元,在可用度较高的情况下亦能满足精度要求。

Abstract:

The voting structure is widely used in reliability design of equipment. For the computation of spare demand for the voting system is difficult and inaccurate, a method to calculate spare demand for the voting system is proposed based on life distribution equivalence. First, non exponential units are converted to exponential units by Requivalence. Then the voting system of exponential units is converted to 〖JP2〗Gamma system and the parameter calculation formulas for the equivalent system are presented. With constrains of availability index, the spare demand results are obtained based on the additive property of Gamma distribution. Finally, in the actual example compared with simulation results, the analytical algorithm put forward in this paper owns high precision for exponential units and can also meet precision demands under high availability for non exponential ones.

刘任洋, 李庆民, 王慎, 李华. 任意寿命分布单元表决系统备件需求量的解析算法[J]. 系统工程与电子技术.

LIU Renyang, LI Qingmin, WANG Shen, LI Hua. #br# Analytical algorithm of spare demand for voting system of any life distribution units[J]. Systems Engineering and Electronics.