关键词: 装配可靠性, 功能分解, 故障树分析, 二元决策图

Abstract: To guarantee the reliability in assembly process, the functional decomposition approach “function—motion—action” was used to analyze the products assembly process structurally based on the definition requirement analysis of assembly reliability, and the modularized fault tree model of meta-action was established. For improving the efficiency and accuracy of analysis, the modularized fault tree was translated into Binary Decision Diagrams (BDD) for optimization by using basic event ordering and if-then-else (ite) approach. According to multi-dimensional mapping between meta-action and assembly products, the multi-tuple was introduced. The Boolean structure function and mapping matrix were used to analyze the assembly reliability. The table exchanger of some machining center was taken as an example to verify the effectiveness of proposed model and analysis method.

Key words: assembly reliability, functional decomposition, fault tree analysis, binary decision diagrams, multi-dimensional mapping