2013 Fiscal Year Final Research Report
Practical vibration control to switch a control law based on frequency
| Project/Area Number |
23560542
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Control engineering
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| Research Institution | Meiji University |
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Principal Investigator |
ABE Naoto 明治大学, 理工学部, 教授 (10202673)
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| Co-Investigator(Kenkyū-buntansha) |
ICHIHARA Hiroyuki 明治大学, 理工学部, 准教授 (70312072)
MATSUOKA Taichi 明治大学, 理工学部, 講師 (80360189)
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| Project Period (FY) |
2011 – 2013
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| Keywords | 振動制御 / セミアクティブ制御 / 可変剛性 / 動吸振器 / 切換制御 |
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| Research Abstract |
As a method to shift the resonance frequency, the dynamic absorber using additional mass is well known; However, its performance is restrictive. The resonance curve with the dynamic absorber will be changed by stiffness. Therefore, by the dynamic absorber which realized variable stiffness, we proposed that a semi-active control to switch the stiffness of the dynamic absorber depending on the vibration frequency of the structure. We proposed that a technique which is detected the vibration frequency of the structure by some Butterworth filter, and the frequency to change stiffness is determined from a resonance curve. We applied the dynamic absorber which changed pre-compression displacement with one pair of cone type spring to one-degree-of-freedom structure, and also the dynamic absorber with an air damper which changed air flow to change the stiffness by an air spring to two-degree-of-freedom structure. The effects were checked by some experiments.
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