余度设计中的系统可靠性最优分配模型  

System Reliability Distribution Optimization Model For Redundancy Design

作　　者：熊峻江[1] 王甲峰[1] 袁立[2] 邱华勇[1] 李慧涌[1] 

机构地区：[1]北京航空航天大学飞机设计研究所,北京100083 [2]沈阳飞机设计研究所,辽宁沈阳110035

出　　处：《航空学报》2004年第1期45-48,共4页Acta Aeronautica et Astronautica Sinica

基　　金：国家自然科学基金;航空科学基金(50005003和01A51011)资助项目

摘　　要：将任务可靠度、基本可靠度均作为系统可靠性优化设计的边界约束,并将系统研制费用视为目标函数,建立了一新的系统可靠性最优分配模型,利用该模型设计出的系统在研制费用最少的情况下,任务可靠度与基本可靠度均达到设计要求。此外,还分别建立了串—并联和并—串联两种余度设计系统的最少研制费用模型。最后通过多个实例验证了上述模型,发现系统可靠性最优分配模型考虑了更多的因素,更有实用价值。The task reliability level and the basic reliability level are regarded as the constraint conditions, and the development cost of the system is seemed as the object function, a system reliability distribution optimization model for redundant design is presented. By means of this model, the system designed can meet the challenge of the task reliability and the basic reliability at a least development cost. The least development cost models for the series-parallel and the parallel-series redundancy design are established. All the three models above are verified by several examples and show that the design results given by the system reliability distribution optimization model are more valuable for engineering design.

关 键 词：系统可靠性 余度设计 优化 基本可靠性 任务可靠性 

分 类 号：V215.7[航空宇航科学与技术—航空宇航推进理论与工程]