J0504-3-4 圧力波を用いた非接触制振デバイスによるウェブフラッタの多点アクティブ制振([J0504-3])流体関連の騒音と振動(3))

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This paper deals with an active control to suppress a flow-induced web flutter by multi-point and non-contact control devices using pressure wave. A flexible web, as a controlled object, is supported at one end and subjected to fluid flow in the passage. The flutter occurs to the web due to the fluid flow with a self-excited feedback mechanism resulting from fluid-structure interaction. The web flutter is suppressed by the active control using the pressure wave from loudspeakers. The loudspeakers are driven with changing a controller gain and phase-shift between the displacement of the web and the pressure. As a result, it is shown that the web flutter is effectively suppressed by the proposed method of multi-point non-contact control.
2010-09-04