| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2013: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
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| Outline of Final Research Achievements |
To counteract the resonant response of super high-rise buildings or base-isolated buildings to long-period ground motions, a new active tuned mass damper (ATMD) and an active base-isolation system (ABS) with optimal feedback and feed-forward control (FBFFC) are studied.
It is made clear that a proposed ATMD effectively reduces the resonant response; performance is far better than an ordinary TMD. Feed-forward control forces are calculated using predictions of ground motions over a limited-duration. Two approaches of the feed-forward control are studied for an ABS. The one is FBFFC derived as the optimal control problem formulated using absolute coordinate system. The other is ‘input cancellation control’ (ICC) that cancels the absolute displacement of a base-isolated building at every moment. It was found that the ICC is obtained as the limit of the FBFFC. Based on these findings, a new control algorithm that combines the Feedback control and the ICC are presented.
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