| 飞机AMU自动测试系统测试信号失真度检测研究 |
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| 引用本文： | 孙毅刚,黄静静,周德新. 飞机AMU自动测试系统测试信号失真度检测研究[J]. 中国民航学院学报, 2006, 24(6): 6-8,13 |
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| 作者姓名： | 孙毅刚 黄静静 周德新 |
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| 作者单位： | [1]中国民航大学研究生部,天津300300 [2]中国民航大学机电工程学院,天津300300 |
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| 基金项目： | 中国民用航空总局科研项目 |
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| 摘 要： | 针对飞机AMU自动测试系统中对音频信号失真度测量的要求，运用PC机和数据采集卡，采用加窗FFT、把整个主瓣的宽度作为基波值来计算基波分量有效值的算法实现了在计算机中对音频信号失真度的直接测量。实验验证，该方法可对组件维护手册（CMM）中所有频率的测试信号进行精确的失真度计算，具有频率范围广、精度高、简便易行等特点。
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| 关 键 词： | 谐波失真度 傅里叶变换 飞机AMU 信号处理 |
| 文章编号： | 1001-5000（2006）06-0006-03 |
| 收稿时间： | 2006-08-29 |
| 修稿时间： | 2006-08-292006-11-02 |
Research on Distortion Measurement Method in Automatic Test System of Audio Management Unit |
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| SUN Yi-gang,HUANG Jing-jing,ZHOU De-xin. Research on Distortion Measurement Method in Automatic Test System of Audio Management Unit[J]. Journal of Civil Aviation University of China, 2006, 24(6): 6-8,13 |
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| Authors: | SUN Yi-gang HUANG Jing-jing ZHOU De-xin |
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| Abstract: | The instrument of distortion measuring is studied by using the PC and PCI data acquisition card to the automatic test Equipment of AMU. The principle of the device is the conversion of the FFT of signal. It is proved that this method can measure the harmonic distortion of all the signals which are mentioned in the CMM,thus having the advantages of wide frequency, high precision and convenience. |
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| Keywords: | harmonic distortion FFT AMU signal processing |
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