有源声学结构:概念、实现及应用

Adaptive Acoustic Structures: Concept,Realization and Applications

有源声学结构是近10年来在有源控制和功能结构基础上,发展起来的一项用于噪声控制的新型声学结 构,具有低频响应好、通用性强、工程应用前景好的特点。本文就有源声学结构的基本概念、组成结构、实现方法及 工程应用等方面的问题给予了深入研究。

Based on active control of noise and vibration and functional structure, adaptive acoustic structures have been developed in recent decade to effectively reduce low-frequency noise, which can be suitable for complicated acoustic environments. In this paper basic concept and main features are introduced firstly, and then several key approaches for constructing the active acoustic structure are examined, including error sensing strategy, selection of secondary sources and error sensors. Finally an example for engineering application is provided.