| 细分D/A输出最小增量提高分辨率的设计 |
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| 引用本文： | 文川. 细分D/A输出最小增量提高分辨率的设计[J]. 电测与仪表, 2006, 43(1): 45-48 |
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| 作者姓名： | 文川 |
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| 作者单位： | 重庆工商大学,计算机与信息工程学院,重庆,400067 |
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| 基金项目： | 重庆市科委资助项目;重庆市教委资助项目 |
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| 摘 要： | 在精密成型与加工类产品的生产过程中，一般用D／A输出作为控制系统的输出控制信号，D／A输出的最小增量决定了控制系统的控制精度；细分D／A输出最小增量可以提高分辨率从而使控制系统的控制精度大大提高。给出了细分D／A输出最小增量的新思路，使用三个D／A转换器和精密放大器，通过细分连续两个D／A转换输入数据的增量，使D／A输出的分辨率得以提高。本文详细介绍了电路中精密放大器TLC2652的选择和使用，当精密放大器选用适当，细分DA输出增量可使10位和8位DA转换器的分辨率提高到18位，16位DA转换器的分辨率提高到32位。
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| 关 键 词： | D/A转换 分辨率 精密放大器 吹塑机 |
| 文章编号： | 1001-1390(2006)01-0045-04 |
| 收稿时间： | 2005-10-22 |
| 修稿时间： | 2005-10-22 |
The Design for Subdividing Minimum Increment of D/A Output and Increasing Resolution |
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| WEN Chuan. The Design for Subdividing Minimum Increment of D/A Output and Increasing Resolution[J]. Electrical Measurement & Instrumentation, 2006, 43(1): 45-48 |
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| Authors: | WEN Chuan |
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| Affiliation: | Computer and Information Engineering Department, Chongqing Technalogy and Bussiness University, Chongqing 400067, China |
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| Abstract: | In precisely taking shape and processing product, generally D/A output is regarded as the output control signal of the control system, the minimum increment of D/A output determines the control precision of the control system; Subdividing minimum increment of D/A output can increase resolution and increase the control precision of the control system greatly. The new way to Subdividing minimum increment of D/A output is given. Using three D/A converters, through subdividing the increase of two D/A continue input data, the Resolution of D/A output is increased. The choosing and using of the precision precision amplifier is right, amplifier TLC2652 are introduced in the paper. When the 10 bits and 8 bits resolution subdividing minimum increment of D/A output can change of D/A into 18 bits and 16 bits to 32 bits. |
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| Keywords: | D/A conversion resolution precision amplifier blowing molding machine |
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