Active noise control for a moving evaluation point using transfer function interpolation
Active noise control for a moving evaluation point using transfer function interpolation
复制标题
使用传递函数插值对移动评估点进行主动噪声控制
DOI：
10.1299/jsmec.49.865
复制
发表时间：
2006
期刊：
影响因子：
--
通讯作者：
J. Park
中科院分区：
文献类型：
--
作者：
T. Okuyama;H. Matsuhisa;H. Utsuno;J. Park
在主动噪声控制（ANC）中，当评估点移动时，误差路径的传递函数（TFEP）会发生变化，从而导致噪声控制性能变差。在这项研究中，提出了一种在任意点识别 TFEP 的新方法。该方法基于平面波理论，并且使用在两点测量的脉冲响应来分析导出 TFEP 的脉冲响应作为位置的函数。应用该方法对试管中变化的TFEP的补偿滤波器进行更新，实验验证了可以在不发散的情况下显着抑制噪声。
In active noise control (ANC), the transfer function of the error path (TFEP) changes when the evaluation point moves, and it causes a bad performance of noise control. In this study, a new method to identify TFEP at an arbitrary point is proposed. This method is based on the plane wave theory, and the impulse response of TFEP is derived analytically as a function of the position, using measured impulse responses at two points. Applying this method to update the compensation filter of the varying TFEP in a test tube, it is verified by the experiment that the noise can be suppressed significantly without divergence.