福建工程学院学士学位论文毕业论文（设计）题目：直流电机多级调速控制系统实现学生：黄哲专业：机械设计制造及其自动化班级：1002班学号：3108601211指导老师：赵卫1福建工程学院学士学位论文目录摘要...............................................................................................................................................IABSTRACT.................................................................................................................................II1.绪论...........................................................................................................................................11.1研究背景.............................................................................................................................11.1.1开发背景......................................................................................................................11.1.2选题的目的和意义......................................................................................................11.2直流电机调速原理简介.....................................................................................................21.3PID算法简介.....................................................................................................................31.2.1模拟PID.......................................................................................................................31.2.2数字PID.......................................................................................................................51.2.3数字PID参数整定方法..............................................................................................62.系统硬件设计与实现...............................................................................................................72.1系统设计方案.....................................................................................................................72.2单片机模块.........................................................................................................................82.2.1单片机设计方案..........................................................................................................82.2.2AT89S52引脚功能......................................................................................................92.3电机驱动模块...................................................................................................................112.3.1电机驱动设计方案....................................................................................................112.3.2L298N芯片简介........................................................................................................132.3.3电机驱动电路............................................................................................................142.4测速模块...........................................................................................................................152.4.1测速设计方案............................................................................................................152.4.2光电对管原理............................................................................................................162.4.3LM339N芯片简介....................................................................................................172.4.4测速模块电...
