摘要
在有源噪声控制领域,为取得较优良的降噪效果,通常使用多通道控制系统。然而随着通道数的增加,系统计算量亦大幅增加,导致算法收敛速度减慢,严重时,系统不能正常工作。针对此问题设计了基于PC和双DSP结构的分布式控制系统,通过适当地划分子系统减少了各控制器处理的通道数目,降低了运算载荷,同时各控制器采用了双DSP的结构进一步增强了计算能力,可以保证系统的实时响应能力。分布式控制系统在实验中取得了较理想的降噪效果,实验结果表明该系统结构可行和有效。
In the field of active noise control, multi-channel active noise control system is generally used to get better performance. But a controller with a large number of channels, which needs a mount of computing power, can lead to slower rate of convergence for algorithm, and in severe cases, the system can＇t work properly. An architecture of decentralized control system based on PC and dual-DSP is presented, in order to meet the computing power demand and realime response speed. The experimental results show that a decentralized system is effective to noise reduction, when the system is divided into several sub-systems feasibly and sub-systems are located reasonably.
出处
《测控技术》
CSCD
北大核心
2013年第1期76-79,共4页
Measurement & Control Technology
基金
重庆理工大学科研资助项目(046029)
关键词
分布控制
自适应滤波
声学
噪声控制
decentralized control
adaptive filtering
acoustics
noise control
