| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2015: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2013: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Outline of Final Research Achievements |
The objective of this study is to present a light and efficient sound transmission control system by introducing active control technologies to a multiple smart films structure. First, in consideration of the fact that thin films are strongly affected by sound fields, hybrid control that simultaneously utilizes active vibration control and active noise control was proposed. Furthermore, the precise modelling method for a vibro-acoustic coupling system using a transfer matrix method, which had specified for a coupling system containing one flexible structure, was expanded to the case of a drum-like coupling structure. As a result, it was clarified that hyperbolic modes that are governed by cosh and sinh functions appear under certain conditions.
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