| 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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| 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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