| 引用本文: | 徐永成,陈循,温熙森,等.基于微机控制实现的自适应有源消声.[J].国防科技大学学报,1996,18(2):49-53.[点击复制] |
| Xu Yongcheng,Chen Xun,Wen Xisen,et al.Adaptive Active Noise Control Based on the Micro-computer Control[J].Journal of National University of Defense Technology,1996,18(2):49-53[点击复制] |
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| 基于微机控制实现的自适应有源消声 |
| 徐永成, 陈循, 温熙森, 唐丙阳, 陶利民 |
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(国防科技大学 机械电子工程与仪器系 湖南 长沙 410073)
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| 摘要: |
| 提出一个以微机为核心的自适应有源消声系统，该系统能为研究不同系统结构的有源消声提供一个灵活的实验平台。文中采用 LMS 算法为自适应滤波控制器，能自动补偿背景噪声、环境参数和电声参数变化对消声效果的影响，能在较宽频带内取得显著的消声量。实验结果表明：在双次级源的自由空间布放方式下，该系统对 50～400Hz 范围内的单频、窄带随机噪声取得的最大消声量在 40dB 以上。 |
| 关键词: 有源消声，自适应控制系统，噪声控制 |
| DOI： |
| 投稿日期：1995-09-11 |
| 基金项目: |
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| Adaptive Active Noise Control Based on the Micro-computer Control |
| Xu Yongcheng, Chen Xun, Wen Xisen, Tang Bingyang, Tao Limin |
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(Department of Mechantronics Engineering and Instrumentation，NUDT，Changsha，410073)
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| Abstract: |
| An adaptive active noise control system based on micro-computer is presented in this paper. This system can supply an agile experimental platform for the research of different system construction and control algorithm. This paper adopts LMS algorithm as an adaptive filter controller，which can automatically compensate for the effect on noise control caused by the changes of the background noise，environment factors and electrical or acoustical parameters. It can accomplish notable broad-band noise attention. The results of experiments show that under the condition of two secondary sound resources arranged within free space，the maximum attention level obtained by the system is more than 40dB to the single frequency and barrow-band random noise from 50 to 400Hz. |
| Keywords: active noise control,adaptive control system,noise control |
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