基于DSP的直升机舱室内的有源噪声控制系统

Active Noise Control System in the Cabin of Helicopter Based on DSP

为消减直升机舱室噪声,对有源消声技术进行了研究。以自适应有源噪声控制系统为研究核心,选用DSP21160作为控制器,给出了系统的硬件解决方案,并利用汇编语言在硬件系统上实现了基于FxLMS算法的有源噪声实时控制。实验结果表明。

To reduce helicopter cabin noise, an active noise control methodology is investigated. The adaptive active noise control （AANC） system is presented. Firstly, the hardware of the system is brought forward by selecting ADSP21160 DSP as the controller. Then, using the assembly language to develop the application soft- ware, the active noise control system based on the FxLMS algorithm is realized. It＇ s proved that a good noise cancellation is achieved by the experiment.