스마트 공장을 위한 유연 제조 시스템 : 다 품종 제품의 재생 도착 과정과 전용 대기공간을 고려한 베르누이 라인의 성능 척도 분석

Due to rapid market changes, customized demands, and the upcoming era of smart factories, flexible manufacturing systems are becoming more prevalent. Multiple types of customized products are being produced in the same production line, in which each machine should be flexible enough to serve those types. This paper studies a two-machine production line with Bernoulli reliability machines for multiple types of products. Each product type has dedicated buffers. Given that scheduling and control polices play a critical role in ensuring efficient production, three prevalent control policies are considered: priority-, cyclic-, and work-in-process (WIP)-based policies. The solutions are derived based on the Markov chain models. In addition, system properties, such as non-conservation of flow, monotonicity, and asymptotic behavior, are addressed theoretically and numerically.