| 数字合成正弦波失真度分析 |
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| 引用本文： | 吴笃贵,王广柱.数字合成正弦波失真度分析[J].数据采集与处理,1998,13(4):324-329. |
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| 作者姓名： | 吴笃贵 王广柱 |
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| 作者单位： | 浙江大学电机系，山东工业大学电力学院 |
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| 摘 要： | 采用数字合成技术产生的正弦波存在波形失真，其失真度大小既与正弦函数一个周期内的转换点数Ｎ有关，也与Ｄ／Ａ转换器的字长Ｄ有关。利用傅立叶级数，本文分析了数字合成正弦波失真度与转换点数Ｎ，Ｄ／Ａ转换器字长Ｄ的数学关系，并对改进型方案的有关结论给予了补充说明。
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| 关 键 词： | 数字技术 量化失真 数字合成 失真度 转换点 |
Analysis of Total Harmonic Distortion of Sinusoidal Wave Generated by Digital Synthesis Technique |
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| Wu Dugui,Xu Zheng.Analysis of Total Harmonic Distortion of Sinusoidal Wave Generated by Digital Synthesis Technique[J].Journal of Data Acquisition & Processing,1998,13(4):324-329. |
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| Authors: | Wu Dugui Xu Zheng |
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| Affiliation: | Wu Dugui Xu Zheng Department of Electrical Engineering,Zhejiang University Hangzhou,310027 Wang Guangzhu College of Electric Power,ShandongUniversity of Technology Jinan,250061 |
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| Abstract: | Harmonic distortion exists in sinusoidal wave generated by digital synthesis technique with its value is related to not only the number of converting points in a period but also the word length of the D/A converter. By means of Fourier series, the relations among the value of total harmonic distortion (THD), the number of converting points and the word length of the D/A converter are analyzed in the paper. Moreover, some conclusions of advanced scheme are also illustrated. |
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| Keywords: | digital techniques quantizing distortion digital synthesis total harmonic distortion converting point |
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