Abstract
It is difficult to reduce the transmitted noise through the internal panel of the railway vehicle by any existing active control methods, which are necessary to identify the vibration-modes of target structure, because the vibration characteristics of the interior panel changes while running. We propose a new noise control system that the noise insulation panel with piezoelectric material arrange, and enable the transmitted noise through a target plate to reduce by suppressing the vibration of the noise insulation panels with a simple analog control circuit. In this paper, after the equivalent mechanical models for a number of the piezoelectric material are shown, we demonstrate the analytical and experimental results about the control effects of the noise insulation panel and the transmitted noise through a target plate by the control system without identification to the vibration or transmitted noise characteristics of the target plate.
