数控恒流源的设计与制作最终版VIP免费

编号毕业设计（2013届本科）题目：数控恒流源的设计与制作学院：物理与机电工程学院专业：电子信息科学与技术作者姓名：指导教师：职称：完成日期：2013年月日二〇一三年六月目录河西学院本科生毕业论文（设计）诚信声明.......................................................................................1河西学院本科生毕业论文（设计）开题报告.......................................................................................2摘要.................................................................................................................................................5Abstract............................................................................................................................................51绪论.............................................................................................................................................61.1恒流源的意义及研究价值..................................................................................................................61.2恒流源的发展历程..............................................................................................................................61.2.1电真空器件恒流源的诞生....................................................................................................61.2.2晶体管恒流源的产生和分类................................................................................................61.2.3集成电路恒流源的出现和种类............................................................................................61.3数控恒流源的研究现状和发展趋势..................................................................................................72系统设计........................................................................................................................................82.1设计要求.............................................................................................................................82.1.1题目要求.................................................................................................................82.2总体设计方案.....................................................................................................................82.2.1设计思路.................................................................................................................82.2.2方案论证与比较......................................................................................................82.2.3系统组成...............................................................................................................113单元电路设计...............................................................................................................................113.1单片机控制电路................................................................................................................113.2A/D接口电路....................................................................................................................123.3D/A接口电路....................................................................................................................133.4恒流源电路.......................................................................................................................133.5LCD显示电路......................................................................