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上海电力大学学报:2017,33(1):77-80
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宽频带交流有效值转换器的误差校正
(上海电力学院 电子与信息工程学院)
Error Correction of Broadband AC RMS Converter
(School of Electronics and Information Engineering, Shanghai University of Electric Power, Shanghai 200090, China)
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本文已被:浏览 1028次   下载 654
投稿时间:2016-03-16    
中文摘要: 在对数-反对数运算式的基础上,提出了一种在宽频带范围内对非线性误差进行校正的新方法.该方法利用最小二乘法拟合出以输入电压x和频率f为自变量的多项式以减小测量误差.通过Matlab软件对实验测量结果进行校正.实验表明,在50~3.0×104 Hz的频率范围内,校正准确度可达0.075%.
Abstract:Based on the log and antilog transport equation,a new nonlinear error compensation method within the scope of the wide band is proposed.In order to reduce the measurement error,least-square fitting method is applied.MATLAB simulation result shows that the proposed method is effective and reliable,and the accuracy can reach 0.075% in the frequency range of 50~30 000 Hz.
文章编号:20171017     中图分类号:    文献标志码:
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引用文本:
朱武,刘冰瑶.宽频带交流有效值转换器的误差校正[J].上海电力大学学报,2017,33(1):77-80.
ZHU Wu,LIU Bingyao.Error Correction of Broadband AC RMS Converter[J].Journal of Shanghai University of Electric Power,2017,33(1):77-80.