&ccedil;Ž‹&aring;œ‹&eacute;›„952221E005076

# &ccedil;Ž‹&aring;œ‹&eacute;›„952221E00...

This preview shows pages 1–2. Sign up to view the full content.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 1 行政院國家科學委員會專題研究計畫期末進度 報告 具有暖備備用零件及不完全復元的系統之成本與機率分析(2/2) 計畫編號：NSC 95-2221-E-005-076 執行期限：95 年 8 月 1 日至 96 年 7 月 31 日 主持人：王國雄 教授 中興大學應用數學系 共同主持人：柯志斌 副教授 中興大學應用數學系 一、 中文摘要 在第二年的計劃，我們研究含有暖備 備用零件及不完全復元的三個不同序列系 統結構之效益特性。主要零件及暖備備用 零件之故障時間假設是指數分配。壞掉零 件之修理時間假設是一般分配。我們假設 主要零件故障及暖備備用零件故障之復元 因素 (coverage factor) 皆相同。針對三個結 構，我們提出遞迴方法，使用輔助變數技 巧，並把輔助變數視為剩餘修理時間，去 推導其穩態效益。對於每一個結構，其三 個不同修理時間分配如指數分配， k 階段 Erlang 分配，及固定分配之穩態效益，其 效益 ( Av ) 都能明顯表示出來。依據系統參 數之指定值及零件之成本，我們來執行比 較所有三個結構。最後，依據效益及成本 / 利益之比值來排序三個結構，其中利益代 表是效益。 關鍵詞：效益、不完全復元、遞迴方法、 輔助變數、成本 / 利益 英文摘要 In the second-year project ， we study the availability characteristics of three various series system configurations with warm standby components and imperfect coverage 。 Failure times of the primary and warm standby components are assumed to be exponentially distributed 。 Repair times of the failed components are assumed to be generally distributed 。 We assume that the coverage factor is the same for a primary component failure as that for a warm standby component failure 。 We present a recursive method ， using the supplementary variable technique and treating the supplementary variable as the remaining repair time ， to develop the steady-state availability ， (or Av ) ， for three configurations 。 For each configuration ， the explicit expressions for the Av for three different repair time distributions ， such as exponential ， k-stage Erlang ， and deterministic are derived 。 For all three configurations ， comparisons are performed for specific values of the system parameters ， and of the cost of the components 。 Finally ， the configurations are ranked based on : Av and cost/benefit where benefit is Av 。 Keywords : availability; imperfect coverage; recursive method; supplementary variable; cost/benefit 二、 前言 Availability has longtime been an important...
View Full Document

{[ snackBarMessage ]}

### Page1 / 3

&ccedil;Ž‹&aring;œ‹&eacute;›„952221E00...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online