关键词: 混联生产线, 缓冲区配置, 可用度评价, 通用发生函数, 遗传算法

Abstract: In order to quickly and efficiently allocate buffer capacity and improve the availability and throughput of the hybrid production lines, a buffer allocation method was proposed based on availability evaluation. Considering the characteristics of the hybrid production lines and analyzing the transition rules between the machine states and the buffer states, the availability of the equivalent machine was obtained through the equivalent processing of the buffer. The mathematical model of the relationship between the availability and buffer capacity of the hybrid production lines was established by using UGF method. Aiming at the maximum availability of the whole line, the optimal buffer allocation strategy was obtained by using GA. Buffer optimization allocation results of multiple production lines indicate that the buffer allocation method based on availability evaluation may significantly reduce the average numbers of work-in-process in the production lines while effectively solving the buffer allocation problem.

Key words: hybrid production line, buffer allocation, availability evaluation, universal generating function(UGF), genetic algorithm(GA)