| A／D转换中的系统误差及其对策 |
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| 引用本文： | 姜昌金,宋文忠,胡克定.A／D转换中的系统误差及其对策[J].南京航空航天大学学报,1994(Z1). |
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| 作者姓名： | 姜昌金 宋文忠 胡克定 |
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| 作者单位： | 东南大学自动化研究所 |
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| 摘 要： | 根据几个工业现场遇到的实例，讨论了计算机实时检测与控制中，Ａ／Ｄ转换环节中引入系统误差的一些可能途径，包括由偶然噪声转换过来的系统误差，传感器本身具有系统误差及多路信号问的窜扰引起的系统误差。分析了这三种情况产生的原因及各自的特性，并根据它们的不同特性，分别给出了消除或减小这几类系统误差，保证Ａ／Ｄ转换的精度的措施。
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| 关 键 词： | 系统误差，实时控制，A／D转换，实时检测 |
System Errors in A/D Conversion and Its Countermeasure |
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| Jiang Changjin, Song Wenzhong, Hu Keding.System Errors in A/D Conversion and Its Countermeasure[J].Journal of Nanjing University of Aeronautics & Astronautics,1994(Z1). |
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| Authors: | Jiang Changjin Song Wenzhong Hu Keding |
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| Abstract: | Some examples coming from industrial control spot are given to illustrate how the syStem errors are led to A/D conversion in computerized real time detection and real time control.Specific properties of some kinds of system errors,such as that transferred from casual error,that transformed from transducers and that led by interference among multi-line signals, and the reasons causing them are analysed. The measures to remove or reduce these kinds of system errors and to assure the precision of A/D conversion are proposed in the paper. |
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| Keywords: | system error real time control A/D conversion real time detection |
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