Numerical study of the optimal preventive maintenance policy of M/M/1 tandem queue = M/M/1 탠덤 큐에서의 최적 예방정비 정책에 대한 수치적 연구

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This paper presents an optimization model for finding preventive maintenance policy of two-stage tandem queue by utilizing Markov decision process (MDP). Non-preemptive preventive maintenance action is assumed in this model. Compare to the classic model of the single-server queue, a machine and corresponding buffer are added to the model and investigated. An optimal policy is derived based on the number of WIP at each buffer and health status of each machine. The structural behavior of optimal policy shows there exist control limit policy and the tendency of optimal thresholds can be observed through numerical studies. Finally, it is shown that proposed model outperformed single-server policy at all performance matrix we investigated: cycle time, operating cost, availability.
Advisors
Morrison, James Robertresearcher모리슨 제임스researcher
Description
한국과학기술원 :산업및시스템공학과,
Publisher
한국과학기술원
Issue Date
2019
Identifier
325007
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 산업및시스템공학과, 2019.2,[iv, 44 p. :]

Keywords

Tandem queue▼amarkov decision process▼apreventive maintenance▼acontrol limit; Dynamic programming; 탠덤 큐▼a마르코브 결정과정▼a예방 정비▼a통제 한계 정책

URI
http://hdl.handle.net/10203/266272
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=843189&flag=dissertation
Appears in Collection
IE-Theses_Master(석사논문)
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