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研究生:謝明修
研究生(外文):Hsieh, Ming-Hsiu
論文名稱:設定保護性產能對排程穩健性之影響
論文名稱(外文):The Impact of Setting Protective Capacity to the Robustness of a Schedule
指導教授:鍾淑馨鍾淑馨引用關係
指導教授(外文):Chung Shu-Hsing
學位類別:碩士
校院名稱:國立交通大學
系所名稱:工業工程研究所
學門:工程學門
學類:工業工程學類
論文種類:學術論文
論文出版年:1996
畢業學年度:84
語文別:中文
論文頁數:108
中文關鍵詞:排程保護性產能寬裕時間
外文關鍵詞:scheduleprotective capacityfloat time
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保護性產能的定義為在非限制資源上,留具比限制資源多出一定數額的多
餘產能,用來保護統計性波動(停機、延遲收料、品質問題等。)。保護性
產能提供非限制資源趕上進度之能力,以確保生產速率與預定完成日期。
本文運用以寬裕為導向之排程法設定保護性產能,並提出保護性產能行動
準則,以辨識並決定:哪些非限制資源需要保護性產能、預留時機、相關
資源如何配合、保護性產能的大小如何決定,以及耗用時機。此方法除了
可以強化排程規劃之穩健性外,並且提供一產能管理方式,在系統不穩定
時,能真正發揮其功能。以寬裕為導向之排程法設定保護性產能,可從三
個層面來因應未預期之干擾事件:(1)第一層面:以排程寬裕時間理念
,構建具有穩健性之排程規劃。(2)第二層面:以作業多餘寬裕值為指
標,構建優先次序生產控制。(3)第三層面:以保護性產能提供趕工能
力。以寬裕為導向之排程法,提供工件在適時、適量、適地的情況下進行
同步生產,並透過保護性產能行動準則之實踐,在週期時間與在製品量的
控制上都有較優的績效。

According to APICS dictionary, the definition of protective
capacity is: "A given amount of extra capacity at non-
constraints above the system constraints capacity, used to
protect against statistical fluctuation ( breakdowns, late
receipts of materials, quality problems, etc.)." That is, the
protective capacity provides non-constraints with the ability to
"protect" throughput and due date performance.This thesis
applies float-time oriented scheduling method to set protective
capacity. It can cope with disruptions from three different
phases: (1)First phase: using float time to construct a robust
schedule; (2)Second phase: deriving the priority order for
control, according the float-time indexes; (3)Third phase: using
protective capacity to catch up the planned pace, when
disruptions occur. Thus, this method not only strengthens the
robustness of a schedule, but also offer a way of capacity
management that can be really functioned when the system is
suffered disruptions.The thesis also proposes the principles of
initiator's actions for using the protective capacity. The
principles include: How to identify non-constraints that need to
set protective capacity? When is needed? How to cooperate the
related resources? How to decide the level of protective
capacity? And when to exhaust the protective capacity?The
simulation results show that better performance is achieved on
both the cycle time and the work-in-process level when following
the principles of initiator's actions. This is done because that
the float-time oriented scheduling method ensures the production
of parts at right time, right quantity and right place.

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