管道有源消声控制技术的发展与动向

Development of Active Noise Control Technology in Ducts

围绕声反馈、次通道、非线性、实时性等影响系统工作稳定性和整体消声效果的关键技术问题,分别对管道有源消声系统的控制结构、控制算法等方面进行了回顾、归纳和总结,并指出抗干扰能力强的复合控制结构、自适应鲁棒控制算法、神经模糊控制算法和基于智能材料的阻抗控制技术是其今后研究的主要发展方向。

The common issues that affect the working stability and performance of the system, such as the feedback from the canceling speaker to the input microphone, the secondary path effects, the nonlinearity of the physical elements, and the real-time computational ability, are taken as the clues to illustrate the development of the active noise control in ducts. Typical control system arrangements and algorithms are summarized and discussed in detail. At last, the authors point out that the hybrid control structure with strong antijamming ability, the adaptive-robust control algorithm, the neuro-fuzzy control algorithm, and the smart material based impedance control technology are the main trends of research and development.