摘要
单纯依据全寿命周期成本最小或系统可靠性最高进行系统设计具有一定的局限性.在系统寿命服从Weibull分布的条件下,给出预防性维修策略,构建设计费用、制造费用和维护费用函数,从而建立可靠性约束下的系统全寿命周期成本的优化模型;接着完整地提出包括系统全寿命周期成本、可靠性设计水平和预防性维修次数在内的系统设计均衡区域的决策方法.最后,以某大型装置的光学系统为例,说明该方法在工程应用上的实效性,也为系统设计均衡区域的决策过程提供系统的思路和方法.
System design has some limitations if solely depending on lifecycle costs minimum or system relia- bility maximum. Under the condition that the life of a system follows Weibull distribution, preventive maintenance strategies, a design cost function, a manufacturing cost function and a repair cost function are presented, and then a lifecycle costs optimization model under reliability constraints is given. A decision method of equilibrium area for system design is put forward completely, which includes lifecycle costs, reliability design level and the times of preventive maintenance. An example analysis of optical systems of a large-scale facility is shown to demonstrate the applicability and effectiveness of our proposed model, and to provide solutions and methods for the decision process of system design of the equilibrium area.
出处
《系统工程学报》
CSCD
北大核心
2015年第4期442-450,共9页
Journal of Systems Engineering
基金
国家自然科学基金资助项目(71172095)
科技部创新方法工作专项资助项目(2011IM020100)
