电机测速与控制论文.docxVIP

电机测速与控制论文 电机测速与控制论文 毕业设计（论文） 姓目:业:级:号:名:电机测速与控制09221贺宗建 指导老师:成都电子机械高等专科学校 二〇一二年五月 转速是指作圆周运动的物体在工业生产中,常会遇到各种需要测量转速的场合， 在单位时间内所转过的圈数, 其大小及变化往往意味着机器设备运转的正常与否, 因此, 转速测量一直是工业领域的一个重要问题。例如在发动机、电动机、机床主轴等旋转设备的运转和控制中，常需要实时监控其转速以便随时调整生产方案。在使用模拟技术制作测速表时，常用测速发电机的方法，即利用传感器测得电机转动脉冲，利用脉冲计算每分钟点击转速。 这次设计内容包含知识全面，在测量系统中能学到关于测量转速的传感 器采样问题，单片机部分的内容，显示部分等各个模块的通信和联调。全面了解单片机和信号放大的具体内容。进一步锻炼我们在信号采集，处理，显示方面的实际工作能力。 关键词：电动机单片机传感器 1、采用单片机作为控制器实现电机的测速、加速、减速控制； 2、测速结果在液晶屏或者LED 上显示； 3、液晶屏上同时能显示实时时钟； 概述···························································3单片机AT89C51简介·············································4复位电路······················································7晶振电路·······················································10按键控制模块·················································11显示部分设计····················································13管脚接线························································13指令功能························································13时钟实时显示功能················································14电机驱动·······················································15四相步进电机工作原理············································16传感器选择·····················································17霍尔传感器·····················································17光电传感器·····················································18转速测量方法····················································19转速测量原理····················································19系统软件设计··················································20主程序初始化····················································20程序框图························································22调试步骤·······················································26全电路仿真······················································29总结····························································30致谢····························································30参考文献························································31 ·················