摘要
介绍了机械设备中常见的串联系统、并联系统和串并联系统等的模糊可靠度与模糊平均寿命的计算，以及机械系统可靠度模糊优化分配的一般模型；讨论了机械系统设计参数模糊多目标优化（含模糊可靠性）及工作参数的模糊可靠性优化问题；指出将模糊可靠性理论引入故障树分析有两个优点：（1）可较好地克服以往概率难于精确赋值的缺点，能反映概率本身的模糊性，允许概率在一定程度上的误差；（2）可将现场得到的少量数据与实际经验相结合，以弥补试验数据少所带来的不足。将模糊可靠性理论用于机械产品的可靠性鉴定与评价，更接近实际，更具科学性。
The methods for calculating the fuzzy reliability and fuzzy mean life of series mechanism, parallel mechanism and series-parallel mechanism of mechanical system are presented, the general model for fuzzy optimum distribution of mechanical system reliability is given. Problems with fuzzy multi-objective optimization of design parameters of mechanical system and fuzzy reliability optimization of working parameters are discussed, and the two advantages of applying fuzzy reliability criterion on fault tree analysis are pointed out. It is concluded that, by using fuzzy reliability theory in appraisal of the reliability of mechanical equipment, precise results can be obtained.
出处
《石油机械》
EI
北大核心
1998年第3期10-13,17,共5页
China Petroleum Machinery
关键词
机械系统
模糊可靠性
优化设计
mechanical system fuzzy reliability optimum design fault analysis
