| 轮形阵列波束形成的优化设计 |
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| 引用本文： | 张孟浩,左曙光,褚志刚,何吕昌.轮形阵列波束形成的优化设计[J].声学技术,2012,31(4):423-426. |
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| 作者姓名： | 张孟浩 左曙光 褚志刚 何吕昌 |
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| 作者单位： | 1. 同济大学新能源汽车工程中心,上海,201804
2. 重庆大学机械工程学院,重庆,400044 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 基于波束形成方法的噪声源识别中,阵列性能影响着声源识别的效果。针对轮形阵列,采用正交试验的方法,对阵列的几何参数进行优化设计。通过逐步缩小参数最优值的取值范围,使在传声器数目和阵列尺寸一定的情况下,阵列的声源识别效果得到改进。经优化,轮形阵列的最大旁瓣水平曲线在很宽的频率带上保持在16 dB以下,比普通轮形阵列的最大旁瓣水平降低了3 dB以上。验证了正交试验方法在阵列优化设计的可行性,为波束形成装置的开发提供了理论依据。
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| 关 键 词： | 波束形成 轮形阵列 正交试验 优化设计 |
| 收稿时间： | 2011/11/26 0:00:00 |
| 修稿时间： | 2012/1/29 0:00:00 |
Optimal design of wheel array beamforming |
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| ZHANG Meng-hao
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ZUO Shu-guang
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CHU Zhi-gang
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HE Lü-chang.Optimal design of wheel array beamforming[J].Technical Acoustics,2012,31(4):423-426. |
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| Authors: | ZHANG Meng-hao ZUO Shu-guang CHU Zhi-gang HE Lü-chang |
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| Affiliation: | ZHANG Meng-hao, ZUO Shu-guang, CHU Zhi-gang, HE Lu-chang (1. Tongji University, New Energy Vehicle Engineering Centre, Shanghai 201804, China; 2. Chongqing University, Mechanical Engineering College, Chongqing 400044, China) |
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| Abstract: | In the process of noise source identification based on beamforming, array performances will seriously influ- ence the noise source identification result. Based on the method of orthogonal experiment, the geometric parameters of wheel array can be designed optimally. When the number of microphones and the array size are fixed, the noise source identification result would be better by narrowing the scope of the optimal parameters gradually. Through optimizing, the maximum sidelobe level of the wheel array keeps below -16 dB in a wide frequency scope, which is 3 dB lower than the common wheel array. The feasibility of orthogonal experiment for array design is verified, which provides a theo- retical basis for developing beamforming devices. |
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| Keywords: | beamforming wheel array orthogonal experiment optimal design |
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