スマートセンサを用いた音響放射パワーのアクティブ・コントロール (適応フィードフォワード制御による音響放射パワーの抑制)

スマートセンサを用いた音響放射パワーのアクティブ・コントロール (適応フィードフォワード制御による音響放射パワーの抑制)
复制标题

使用智能传感器主动控制声辐射功率(通过自适应前馈控制抑制声辐射功率)

DOI:
10.1299/kikaic.60.1646
复制
发表时间:
1994
期刊:
Transactions of the Japan Society of Mechanical Engineers. C
影响因子:
--
通讯作者:
S. D. Scott
S. D. Scott
中科院分区:
--
文献类型:
--
作者:
信雄 田中;義弘 菊島;雅治 黒田;S. D. Scott

文献摘要

被引文献

相似文献

本文讨论的问题,传感结构振动提供一个误差信号的自适应前馈控制系统实现全局衰减结构和声学干扰。本文证明了一种新提出的智能传感器的有效性,由PVDF分布参数传感器设计,以测量从振动板辐射的总声功率的功率模式。首先,在整个平板上粘贴PVDF分布参数传感器,推导了j次幂模式的传感公式。然后,考虑到智能传感器的实用性,推导了条形智能传感器的功率模式检测的替代公式。还示出了用于测量功率模式的最佳形状的智能传感器的特性。此外,基于自适应前馈滤波-xLMS算法,进行了振动板辐射声功率最小化的实验。
This paper deals with the problem of sensing structural vibration to provide an error signal to adaptive feedforward control systems implemented to globally attenuate both structural and acoustic disturbances. This paper demonstrates the validity of a newly proposed smart sensor made of PVDF distributed parameter sensors designed to measure power modes of the total acoustic power radiating from a vibrating plate. Firstly, with a PVDF distributed parameter sensor attached over the whole plate, the formulas for sensing the j-th power mode are derived. Then, by considering the practicability of the smart sensors, alternate formulas for sensing the power mode are derived for a strip-type smart sensor. The characteristics of the smart sensors optimally shaped for measuring the power modes are also shown. Moreover, based upon an adaptive feedforward filtered-χLMS algorithm, an experiment was conducted demonstrating the minimization of the acoustic power radiated from a vibrating plate.