工程实践与科技创新[3A]-第81组设计报告(任务一)

技术文件完成时间：2013.12.10工程实践与科技创新[3A]设计报告2013年项目名称：DC-DC开关电源模块及其控制系统设计小组编号：设计小组名单：季忆(组长)、马萍、葛芮君上海交通大学电子信息与电气工程学院上海交通大学电子信息与电气工程学院地址：东川路800号邮编：200240姓名班级学号具体负责的工作联系方式季忆F11030135110309415单片机控制电路的焊接调试，开环、闭环调试，报告撰写18817553316马萍F11030135110309415DC-DC开关电源电路设计、焊接、调试，报告撰写葛芮君F11030135110309539DC-DC开关电源电路设计、焊接、调试，报告撰写上海交通大学电子信息与电气工程学院地址：东川路800号邮编：200240摘要：本文档是关于DC-DC开关电源以及单片机控制的监控系统的设计报告。整个系统由DC-DC开关电源，单片机小系统，电压控制及电压检测四个子系统组成，实现对输出电压的开环和闭环控制,提高了电压输出的精度。本设计报告介绍了DC-DC开关电源及其控制系统的主要功能、系统框图，系统硬件以及软件的设计和实现方法，系统的技术指标，调试分析方法，针对硬件的工作原理和软件的编程思想，系统测试结果，用户操作的详细说明，对系统中某几个部分的深入扩展研究，心得体会等等，包括了实验过程中遇到的各种问题以及对它们的思考关键词：DC-DC开关电源，开环控制，闭环控制，模数转换ABSTRACTThisdocumentisaboutthedesignreportofaDC-DCswitchingpowersupplyaswellasthecorrespondingmonitoringsystemcontrolledbymicrocontroller.Thewholesystem,whichconsistsofaDC-DCswitchingpowersupplysubsystem,amicrocontrollersubsystem,avoltagecontrolsubsystemandavoltagesamplingsystem,accomplishesopenloopandcloseloopcontroloftheoutputvoltageandimprovetheaccurityoftheoutputvoltage.ThisreportincludesdetailedexplanationsofinnerworkingsoftheDC-DCswitchingpowersupply;whichincludesthedesigningandimplementationsofitscontrolsystems,majorfunctions,requiredhardwareandsoftware，alongwiththeresultofthetestofthesystem,user’sinstructions,etc.Thedesignspecifications,plusthedebuggingprocessandtesting,aswellasuserinstructionsmanualarealsoattachedinthereport.KEYWORDSDC-DCSwitchPowerSupply,Open-loopControl,Closed-loopControl,Analog-DigitalConversion第1页上海交通大学电子信息与电气工程学院目录1.概述..............................................................................................................................11.1编写说明...............................................................................................................11.2名词定义...............................................................................................................11.3硬件开发环境.......................................................................................................21.4软件开发环境.......................................................................................................21.5缩略语...................................................................................................................32.系统总述......................................................................................................................42.1系统组成...............................................................................................................42.2系统的主要功能...................................................................................................52.2.1DC-DC开关电源子系统模块......................................................................52.2.2电压控制模块.............................................................................................52.2.3电压检测模块.............................................................................................62.2.4单片机小系统模块.....................................................................................62.2.5Labview显示模块.......................................................................................73.DC-DC开关稳压电源模块的设计............................................................................83.1功能与指标..........................................................................................................83.1.1系统功能.....................................................................................................83.1.2系统指标.....................................................................................................83.2基本设计原理......................................................................................................93.3主要电路和参数设计........................................................................................103.3.1核心芯片...................................................................................................103.3.2外围电路设计...........................................................................................113.3.3元件参数列表...........................................................................................123.3.4TL494外围硬件电路参数选取................................................................133.4纹波的控制与效率的提高.................................................................................153.4.1纹波的成分分析........................................................................................163.4.2纹波的控制要求及观测方法....................................................................17第2页上海交通大学电子信息与电气工程学院3.4.3纹波的抑制................................................................................................173.4.4效率的提高................................................................................................183.4.5实际设计中遇到的其余问题....................................................................183.5电路实物图.........................................................................................................194.用单片机控制DC-DC开关电源输出电压.............................................................214.1单片机控制系统整体方案..............................................................................