论文部分内容阅读
近十几年来由于微处理机技术的日益发展与快速A/D转换器准确度的不断提高,采样原理的仪表得到越来越多的应用。对该原理许多专家、学者都在理论上不断研究,已经成功地解决了截断误差的数学估计,同步误差消除等问题。最近A/D——D/A混合乘法器技术的应用,使采样原理仪表准确度从原来0.5～0.3%提高到0.05%以上。由于获得0.05%的准确度仅需12BitA/D与D/A,即:仪表的准确度已达到或小于A/D和D/A线性误差和量化误差的数量级,因而研究A/D转换器误差函数特性,找出量化误差的概率分布特征,对采样原理仪表的误差分析与准确度提高都有重要意义。
Over the past decade as the microprocessor technology continues to grow and the accuracy of fast A / D converter continues to improve, more and more applications of the sampling principle instrumentation. On the principle of many experts and scholars in theory continue to study, has successfully solved the truncation error mathematical estimation, synchronization error elimination and other issues. The recent A / D - D / A hybrid multiplier technology, the accuracy of the sampling principle of the instrument from the original 0.5 to 0.3% to 0.05% or more. Since the accuracy of obtaining 0.05% is only 12BitA / D and D / A, that is, the accuracy of the meter has reached or fallen below the linearity error of A / D and D / A and the quantization error, the A / D converter error Function characteristics, to find the probability distribution of quantization error characteristics of the sampling principle of error analysis and accuracy are of great significance.