Active structural acoustic control using the remote sensor method
Active structural acoustic control using the remote sensor method
复制标题
使用遥感器方法的主动结构声控制
DOI：
10.1088/1742-6596/744/1/012184
复制
发表时间：
2016
期刊：
影响因子：
--
通讯作者：
S. Daley
中科院分区：
文献类型：
--
作者：
J. Cheer;S. Daley
结构声辐射主动控制（ASAC）是降低结构振动声辐射的一种有效方法。为了实现仅使用结构致动器和传感器的ASAC系统，有必要采用来自结构的声辐射的模型。这种模型已经在文献中提出了简单的结构，如折流矩形板，并确定更复杂的实际结构的辐射模式，使用实验数据的方法也进行了探索。类似的问题出现在有源噪声控制的上下文中，其中在空间中不可能定位物理误差麦克风的位置处需要消除干扰。在这种情况下，消除点处的信号可以使用“远程麦克风方法”从远程定位的测量传感器的输出估计。这种远程麦克风的方法在这里扩展到ASAC的问题，其中的压力在一些麦克风的位置必须估计从测量的辐射系统的结构。控制和估计策略的描述和性能进行评估的一个典型的结构辐射问题。
Active structural acoustic control (ASAC) is an effective method of reducing the sound radiation from vibrating structures. In order to implement ASAC systems using only structural actuators and sensors, it is necessary to employ a model of the sound radiation from the structure. Such models have been presented in the literature for simple structures, such as baffled rectangular plates, and methods of determining the radiation modes of more complex practical structures using experimental data have also been explored. A similar problem arises in the context of active noise control, where cancellation of a disturbance is required at positions in space where it is not possible to locate a physical error microphone. In this case the signals at the cancellation points can be estimated from the outputs of remotely located measurement sensors using the “remote microphone method”. This remote microphone method is extended here to the ASAC problem, in which the pressures at a number of microphone locations must be estimated from measurements on the structure of the radiating system. The control and estimation strategies are described and the performance is assessed for a typical structural radiation problem.