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本文对微处理器技术支持的高准确度V/F转换系统进行了深入的理论研究:从实现高准确度DVM的角度,探讨了R.A.Pease方案的工程价值,对误差因素,误差控制方法和技术难点等基本问题给出系统的理论分析结果。根据本文研制的DVF-1型智能数字电压频率测量仪,基本误差和分辨率分别为8ppm和0.6ppm,达到了高档DVM的水平。
In this paper, the high accuracy V / F conversion system supported by microprocessor technology is deeply studied. From the perspective of high accuracy DVM, the engineering value of RAPease scheme is discussed. The error factors, error control methods and techniques Difficulty and other basic problems given system theoretical analysis. According to the developed DVF-1 intelligent digital voltage and frequency measuring instrument, the basic error and resolution are 8ppm and 0.6ppm, respectively, reaching the level of high-grade DVM.