非等強度分負荷系統之動態負載配置研究

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题名:	非等強度分負荷系統之動態負載配置研究
作者:	徐理智;Li-Chih Hsu
贡献者:	機械工程研究所
日期:	2004-07-13
上传时间:	2009-09-21 11:44:59 (UTC+8)
出版者:	國立中央大學圖書館
摘要:	可靠度已在各行業成為一基本且重要的課題；從前段設計，中段生產，乃至於後段維修保養，工程師們無不想盡各種方法使其可靠度提高並增加其壽命，進一步提升企業競爭力。在後段使用階段，分負荷(k, n)系統亦為其一提高可靠度且相對穩定安全的方法；其係由一N分系統所組成，在定義之K分系統存活下 (k<n)，系統及屬於正常，稱之為分負荷系統(k, n)系統。本文由條件機率法先架構出非等強度分負荷系統之可靠度通式並且對其中分系統開始失效後，其動態負載分配之過程作不同策略之探討；本文整體可以分為兩段：前段先以一系統退化機制為基準，引用動態可浩偉靠度(e, c, n)模型配合蒙地卡羅流程來模擬系統在不同存活機率模式與動態可靠度行為；而後段探討分負荷系統的負載分配，包括傳統平均分配負載型、黃博士之令分系統失效率相等策略、以及能者多勞負載分配策略，並透過一例子來實際說明系統運作期間，可靠度的變化情形。 Today’s industry, reliability is an essential and inevitable issue during the earlier stage’s design process, medium term’s manufacturing, and the later part’s maintenance, repair, and load assignments. All engineers endeavor to raise product’s reliability and enhance its availability and extension of life in order to make profits and competitiveness to theirs companies. Unequal strength shared-load system which performs normal at least k of the total n units via the shared loads among the working period is a good stratagem to the later stage promoting reliability. The load assignments focused on mechanical fatigue mechanism during the whole working stage are investigated in this study. In the front of this thesis, the unequal strength shared-load system’s reliability is derived from the conditional probability method by using dynamic (e, c, n) model and Monte-Carlo simulation. Then, study extends to the discussion and presents examples of load assignment and adjustment: including three policies: (1) Average allotment policy, (2) Dr. Wang’s policy by requiring all units failed simultaneously (equivalent hazard rate policy), and (3) Able capability invites laboriousness policy.
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