| 多参考通道自适应有源结构声辐射控制系统参考信息的拾取研究 |
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| 引用本文： | 岳国森,邱小军,沙家正.多参考通道自适应有源结构声辐射控制系统参考信息的拾取研究[J].南京大学学报(自然科学版),1999(4). |
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| 作者姓名： | 岳国森 邱小军 沙家正 |
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| 作者单位： | 南京大学声学研究所!210093，南京，南京大学声学研究所!210093，南京，南京大学声学研究所!210093，南京 |
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| 摘 要： | 理论研究了多参考通道自适应有源结构声辐射控制系统参考信息的拾取问题，利用二维空间采样定理，对简支条件下矩形板的受激振动信号的采样点的个数和布放作了研究，给出了恢复矩形板的振动信号的解析形式，并作了数值计算和误差分析，得到的结果具有普遍性，对结构振动的近场声辐射的预测及进行有源噪声抵消的研究和应用具有重要的意义
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| 关 键 词： | 有源噪声控制 自适应 空间采样定理 |
A STUDY ON THE PICKUP OF REFERENCE SIGNAL IN A MULTI CHANNEL, ADAPTIVELY ACTIVE STRUCTURAL ACOUSTIC RADIATION CONTROL SYSTEM |
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| Yue Guosen,Qiu Xiaojun,Sha Jiazheng.A STUDY ON THE PICKUP OF REFERENCE SIGNAL IN A MULTI CHANNEL, ADAPTIVELY ACTIVE STRUCTURAL ACOUSTIC RADIATION CONTROL SYSTEM[J].Journal of Nanjing University: Nat Sci Ed,1999(4). |
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| Authors: | Yue Guosen Qiu Xiaojun Sha Jiazheng |
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| Abstract: | The problem about the pickup of reference signal in a multi channel, adaptively active structural acoustic radiation control system is investigated based on the two dimensional sampling theorem. For a simply supported rectangular panel, the number and position of sampling points of the excited vibration signal are studied. The analytical expression for the recovered vibration signal of the panel is shown, and the errors are analyzed. The results are general, and have great values in the prediction of near field, acoustic radiation of structural vibration, and the research and application of active noise control. |
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| Keywords: | Active noise control Adaptive system Space sampling theorem |
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