数控直流电流源硬件设计论文

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1、信息与控制工程学院硬件课程设计说明书数控直流电流源设计学生学号：09580113学生姓名：专业班级：指导教师：职称：教授起止日期：2012.03.05～2011.03.25吉林化工学院JilinInstituteofChemicalTechnology信息与控制工程学院硬件课程设计说明书课程设计任务书一、设计题目：数控直流电流源设计二、设计目的1．掌握MSP430F169单片机的设计；2．掌握数控直流电流源电路及显示驱动电路设计；3．熟练掌握单片机的编程方法；4．掌握利用IAR进行程序编辑，程序调试及程序

2、下载的方法。三、设计任务及要求设计并实现数控直流电流源系统。数控直流电流源系统应具有以下基本功能;（1）15DC供电（可以使用成品稳压电源），输出电流范围：200mA～2000mA；（2）带负载能力：≥10Ω（在负载电阻10Ω时，效率≥70%）；（3）具有“+”、“-”步进调整按键，能够调整输出电流，设置范围200mA～2000mA，（4）能够数字显示输出电流给定值和实际输出电流值;（5）改变负载电阻大小（10Ω～15Ω之间），输出电流稳态误差值小于10mA。四、设计时间及进度安排设计时间共三周（2012

3、.3.5～2012.3.25）,具体安排如下表：周安排设计内容设计时间2012.3.5设计单片机最小系统和数字直流电流源电路的原理图，学第一周～习单片机开发工具IAR的使用。2012.3.112012.3.12按照原理图焊接电路板，并检查和调试硬件电路。学习单片第二周～机的编程驱动方法以及掌握利用IAR进行软件调试程序。2012.3.182012.3.19调试程序实现数字直流电流源的基本功能。完成并提交硬件第三周～设计作品及硬件课程设计说明书，课程设计答辩。2012.3.25五、指导教师评语及学生成绩指导

4、教师评语:年月日成绩指导教师(签字):年月日-I-数控直流电流源设计目录课程设计任务书······································································································I第一章数控直流电流源设计目的················································································1第二章数控直流电流源方案选择

5、················································································22.1总体方案选择·······························································································22.2器件的选择·····························································

6、····································32.2.1控制芯片选择·······················································································32.2.2显示器选择·························································································42.2.3键盘模块选择········

7、··············································································42.2.4开关管选择··························································································42.2.5PWM芯片选择·······························································

8、······················52.3检测方案选择······························································································5第三章数控直流电流源系统硬件设计········································································