| 交流电失真度测量方法研究与实现 |
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| 引用本文： | 赵耀松,霍凯,陈志鸿.交流电失真度测量方法研究与实现[J].电测与仪表,2014,51(19). |
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| 作者姓名： | 赵耀松 霍凯 陈志鸿 |
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| 作者单位： | 北京交通大学 机械与电子控制工程学院,北京,100044 |
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| 摘 要： | 曲线拟合法从原理上能够实现正弦信号失真度计算,但正弦曲线拟合是一个四参数优化问题,传统算法在求取全局最优解时对初值敏感并容易陷入局部极值,这限制了曲线拟合法在失真度测量中的应用。针对正弦曲线拟合困难的问题,提出了一种三参数曲线拟合算法,设计并实现了一款基于ARM的交流电失真度测量仪,并对其硬件和软件设计中的关键技术进行了说明。测试表明,该方法能够完成交流电失真度的测量,设备运行稳定,满足应用要求。
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| 关 键 词： | 交流电 失真度 三参数曲线拟合 嵌入式系统 ARM |
| 收稿时间： | 2014/1/13 0:00:00 |
| 修稿时间： | 2014/1/13 0:00:00 |
Research and Implementation of a Method for AC Distortion Measurement |
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| ZHAO Yao-song,HUO Kai and CHEN Zhi-hong.Research and Implementation of a Method for AC Distortion Measurement[J].Electrical Measurement & Instrumentation,2014,51(19). |
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| Authors: | ZHAO Yao-song HUO Kai and CHEN Zhi-hong |
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| Affiliation: | School of Mechanical,Electronic and Control Engineering,Beijing Jiaotong University,School of Mechanical,Electronic and Control Engineering,Beijing Jiaotong University,School of Mechanical,Electronic and Control Engineering,Beijing Jiaotong University |
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| Abstract: | The distortion of sine wave can be calculated with the curve-fit method in theory, but sine wave curve-fitting is a four-parameter optimization problem, traditional algorithm in calculating the global optimal solution easily falls into local minima, and thus limits the application of curve-fitting in distortion calculation. For this problem, a three-parameter curve-fit method is introduced and is used in AC distortion measurement. Experimental results show that the method can complete the AC distortion degree measurement and meets the application requirements. |
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| Keywords: | AC distortion factor three - parameter curve - fit embedded system ARM |
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