As part of a hierarchical production control system, a policy is proposed for the admittance for new parts to a flexible manufacturing system (FMS) together with two different heuristics for dynamic routing of parts. The heuristics that consider the process plan's flexibility with respect to machines and operations are based upon operating time and machine reliability. To quantify flexibility, it is developed a priority type of the measurement considering machine's reliability that incorporates all the job and machine characteristics that contribute to routing flexibility. HUR which considers machine reliability is applied to drive some simulated systems and compared with the HUS using SPT rule. It is found that HUR outperforms HUS using SPT in terms of makespan and machine utilization.

Abstract
 1. 서 론
 2. 부품할당정책
  2.1 부품할당정책을 위한 제반사항
  2.2 HUS(Heuristic Using SPT)
  2.3 HUR(Heuristic Using machine Reliability)
 3. 수리 모형
  3.1 수치 예
  3.2 HUR 휴리스틱
 4. 수행도 평가
 5. 결 론
 참고문헌

• 이용희(동아대학교 산업시스템공학과)
• 이상도(동아대학교 산업시스템공학과)