| 一种高稳定数控恒流源的设计 |
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| 引用本文： | 常铁原,朱桂峰,胡重九.一种高稳定数控恒流源的设计[J].电测与仪表,2010,47(3). |
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| 作者姓名： | 常铁原 朱桂峰 胡重九 |
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| 作者单位： | 河北大学,电子信息工程学院,河北保定,071002;河北大学,电子信息工程学院,河北保定,071002;河北大学,电子信息工程学院,河北保定,071002 |
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| 摘 要： | 设计了一种高稳定的数控直流恒流源。以单片机为控制核心,采用模拟比较器反馈控制和A/D、D/A转换器的数字反馈控制,提高了输出电流的稳定性和精度。经实际测试,该恒流源纹波电流小、步进调整功能可靠。恒流值给定和测试精度、变负载恒流稳定性均基本达到0.1%水平。
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| 关 键 词： | 单片机 恒流源 A/D转换器 D/A转换器 |
The Design of a High Stable Digitally Controlled Constant-Current Source |
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| CHANGTie-yuan,ZHUGui-feng,HUChong-jiu.The Design of a High Stable Digitally Controlled Constant-Current Source[J].Electrical Measurement & Instrumentation,2010,47(3). |
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| Authors: | CHANGTie-yuan ZHUGui-feng HUChong-jiu |
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| Affiliation: | CHANGTie-yuan,ZHUGui-feng,HUChong-jiu (College ofElectronic , Information Engineering,Hebei University,Baoding071002,Hebei,China) |
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| Abstract: | A digital controlled constant-current source is designed. Single-Chip Microcomputer is the control core, and analog comparator feedback control and digital feedback control of A/D and D/A are adopted. The stability and accuracy are improved. The system has a small ripple, reliable step-adjust function. The setting and the output are precise. And the output ofthe constant-current source is stable when load is changed .The errors can both reach the level of0.1%. |
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| Keywords: | SCM constant-current source A/D D/A |
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