摘要
本文讨论了脉冲调宽乘法器用于交流测量时交直流变换误差与时分割频率的关系，提出了一种新的准确计算方法，并对相移误差等因素作了分析，给出了减小误差的措施。最后介绍了基于上述分析而设计研制的标准功率、电压、电流测量仪，其测量功率、电压、电流的误差均小于００１％
The relationship between the AC/DC transfer errors and the time division frequency when PWMM is applied to AC measurement is discussed in this paper. A new method of accurate calculation of errors is proposed and the factors of phase error ect. are analysed. The ways of reducing errors are also proposed. the design of the standard power, voltage, current measuring instrument based on above principles is introduced. The errors of the AC power, voltage, current measuring instrument are less than 0.01%.
出处
《计量学报》
CSCD
北大核心
1997年第1期50-56,62,共8页
Acta Metrologica Sinica
关键词
脉冲调宽乘法器
标准功率电
电流测量仪
Pulse width modulation multiplier
AC/DC transfer errors
AC measurement
Standard power meter
