【摘要】 研究目的:接触网是电力牵引供电设备的重要组成部分,只有对它进行可靠性优化设计,才能保证机车安全运行。研究方法:本文通过分析可靠性分配的影响因素,提出了一种基于模糊数学原理的模糊综合评判法对接触网系统可靠性分配进行最优决策,即确定影响接触网各部件可靠性水平的因素集以及因素的权重集,再根据接触网每一类部件对各个因素的隶属度作出模糊综合决策,把接触网规定的可靠性指标合理地分配给组成该系统的每个子系统,既使整个系统的可靠性得到保证又能取得很好的经济效益,并把它的算法编成了程序。研究结果:结果接触悬挂分配的可靠度最高,其次分别为支持装置、定位装置、支柱与基础。研究结论:为铁路部门对接触网系统进行可靠性优化设计提供了一种实用可行的方法,有待在设计实践中进一步完善。更多还原

【Abstract】 Research purposes: Catenary is an important part of power supply equipment. Safety is ensured only by reliability optimized design. Research methods:By analyzing the influential factors of reliability allocation, the method of fuzzy synthesis evaluation based on fuzzy mathematical theory was presented to carry through optimum allocation of catenary system in this paper. Namely, appointed reliability index is distributed rationally to subsystem of catenary system by establishing factor collection of reliability level and the weight of factor and further synthesis decision-making based on attachment degree of every factor. Both reliability of whole system and economic benefit are ensured ,its arithmetic was programmed simultaneously . Research results:It proves that reliability of catenary suspension is the biggest, secondly holding setting, orientation setting and support setting respectively. Research conclusions:It provides a feasible method for railway department’s reliability optimum design of catenary system, and need to be further perfect in the design practice.更多还原