On modelling and load allocations of k-out-of-n load sharing systems
| Project/Area Number |
21500273
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Statistical science
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| Research Institution | The University of Electro-Communications |
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Principal Investigator |
YAMAMOTO Watalu 電気通信大学, 情報理工学(系)研究科, 講師 (30303027)
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| Project Period (FY) |
2009-04-01 – 2014-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2013: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2012: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2011: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2010: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2009: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Keywords | 線形劣化モデル / 累積損傷則 / 時間尺度 / 多変量寿命データ / 負荷分散 / 負荷配分 / 信頼性 / 信頼性工学 / 負荷分散システム / 冗長設計 / 最適負荷配分 / k-out-of-n |
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| Research Abstract |
This research project aimed to develop the optimal allocation for load-sharing systems, especially with k-out-of-n logics. To do so we also needed to develop modelling approaches for lifetimes based on the records of degradation measurements, usage patterns, cumulative work loads and other variables, continuously monitored on the target systems. For the work load allocations, we investigated the piecewise linear degradation models with slopes which vary depending on the transformation of the loads powered by k. For k>1 cases, we conclude that the optimal allocations are same as cases with k=1. For k<1 cases, the optimal allocations are strange in that, the total work load must be put on one single component until its failure. We also investigate the modelling and prediction of lifetimes based on the continuously monitored data and developed several methods to predict individual lifetimes.
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Report
(6 results)
Research Products
(19 results)
