摘要
设计一款基于51系列单片机的精准数控直流稳压电源,对系统作了硬件和软件设计,系统以AT89C51单片机为核心控制器,通过单片机控制数模转换,来改变稳压模块的输出,用键盘（按键）实现步进预置输出设置,进而实现数控输出。输出电路中,用负反馈闭环控制及电流放大处理,使电源输出电压稳定、带负载能力较强。经测试,系统输出电压范围为0~10V,分辨率为0.1V,输出电压相对偏差小于0.05%,输出最大电流为3A液晶屏实时显示输出电压值。系统小巧、轻便、直观且操作简单,适用于各种电子线路实验与小功率的电子设备中,有较好的应用前景。
Design a precise numerical control DC regulated power supply based on 51 MCU.It designs hardware and software of the system,the system uses AT89C51 MCU as the core controller;DAC to change the output of the voltage regulator module controlled by MCU,With the keyboard（keys） to realize step preset output Settings,and implement numerical control output,with negative feedback closed loop control and current amplification processing in the output circuit,these make the power supply output voltage stability and load ability stronger.The system output voltage range of 0-10V,a resolution of 0.1V,the system output voltage relative deviation is less than 0.05%,the maximum output current for 3A,LCD real-time display output voltage value.System is small,lightweight,intuitive and simple operation,it suitable for all kinds of electronic circuit experiment with low power electronic devices,has good application prospect.
出处
《电子质量》
2015年第9期22-25,共4页
Electronics Quality
基金
基于应用型人才教育的电子线路课程教学创新实验区(2015年嘉应学院质量工程项目(编号:415B0252))
通信电子线路的总项目分环节设计的实验教学改革与实践(2015年嘉应学院教改重点项目(编号:415B0361))
关键词
数控
单片机
数模转换
步进
直流稳压电源
Numerical Control
MCU
DAC
Step by Step
DC Regulated Power Supply
