| 采用小波变换的有效值和频率测量方法 |
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| 引用本文： | 郑势,王秋光,石雨涛.采用小波变换的有效值和频率测量方法[J].电气应用,2007,26(2):101-104. |
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| 作者姓名： | 郑势 王秋光 石雨涛 |
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| 作者单位： | 哈尔滨理工大学电气与电子工程学院,150040;哈尔滨电机厂有限责任公司,150040 |
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| 基金项目： | 黑龙江省教育厅科技一般项目计划 |
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| 摘 要： | 讨论了对含谐波的正弦电压(电流)采样值直接进行小波变换计算基波、谐波电压(电流)的有效值及频率的方法.频率测量中,应用数字测频法对极值点法进行改进.利用小波变换算法对短时间信号进行分析,得到了很好的测量结果.仿真结果表明,在理想采样的情况下(采样过程不存在同步误差),利用小波变换的方法可以对有效值和频率进行准确的测量.
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| 关 键 词： | 小波变换 有效值 频率测量 |
| 修稿时间： | 2006年9月27日 |
A Method of RMS and Frequency Measurement Using the Wavelet Transform |
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| Zheng Shi.A Method of RMS and Frequency Measurement Using the Wavelet Transform[J].Electrotechnical Application,2007,26(2):101-104. |
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| Authors: | Zheng Shi |
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| Affiliation: | Harbin University of Science and Technology |
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| Abstract: | It's discussed that the method of RMS and frequen- cy measurements directly from the wavelet transform data asso- ciated with each sampling sine voltage(current)element pair containing harmonic.Digital frequency measurement algorithm is applied to improve maximum value points in frequency mea- surement.A good result by analyzing a short-time signal using wavelet transform algorithm have got.Computer simulation re- sult proves that RMS and frequency measurements using the wavelet transform can get the accurate result by the ideal sam- pling situation,i,e.the synchronous error is zero. |
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| Keywords: | wavelet transform BMS frequency measurement |
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