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- 一般回复教师会与你的论文一起问你,这是你的论文,但你没有别的什么或不同的防守。然后,如果老师没有仔细看你的论文,它只会问一些概念问题。例如,超声波传输,距离,波长等。微控制器的熟悉教师会问您一些算法,例如如何改变信号,是有任何干扰,如何解决,显示,学费数据等。一祝你回复。
- 2021-06-23 05:21:32
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- 2021-06-23 05:20:39
- 追梦
- 基于PLC单闭环液位控制系统设计(毕业论文)PLC采用西门子S7,单片机控制单闭环直流电动机的调速控制系统论文编号:JD197字数:18860,页数:62摘 要直流电动机在冶金、矿山、化工、交通、机械、纺织、航空等领域中已经得到广泛的应用。随着科学的不断进步,直流电动机的应用更加广泛,尤其是在智能机器人中的应用。本设计就是针对直流电动机的起动和调速性能好,过载能力强等特点设计由单片机控制单闭环直流电动机的调速控制系统。本设计利用AT89C51单片机设计了单片机最小系统构成直流电动机反馈控制系统的上位机,该上位机具有对外部脉冲信号计数和定时功能,能够将脉冲计数用软件转换成转速,同时在单片机最小系统中设计了4位键盘接口和液晶显示接口。利用AT89C2051设计了由单片机实现的直流电机控制电路,即直流电动机反馈控制系统的下位机,该下位机具有直流电机的反馈控制功能。上位机与下位机之间采用并行总线的方式进行连接,使控制变得十分方便。本系统能够实现直流电动机的自动起动、自动停止、速度自动控制、方向自动控制等功能。设计中利用液晶显示将指定转数、实际转数、旋转方向、运行时间等参数显示出来。本系统操作简单、造价低、安全可靠性高、控制灵活方便,具有较高的实用性和再开发性。关键词:直流电动机;单片机;反馈控制;液晶显示器AbstractThe direct current motor has already got the extensive application in realms, such as metallurgy, mineral mountain, chemical engineering, transportation, machine, spinning and aviation etc. Because science progresses unremittingly, the application of the direct current motor, in the intelligence robot particularly, is more extensive. A speed-adjusted system of DC conctrolled by MCU according the adventage of DC motor such as starting easily, good performance, and strong carrying over.This design makes use of the place of honor machine that the AT89C51 a machine designed a system with minimum machine to constitute the direct current motive feedback control system, the place of honor's machine tool has outward a pulse signal to count and in fixed time function, can count pulse with the software conversion to become to turn soon, designs 4 keyboarders to connect and the LCD manifestation to connect in a system with minimum machine at the same time. Making use of the AT89C2051 designed from the direct current electrical engineering control electric circuit of a machine realization, namely the direct current motive feedback controls the system of next machine, that next machine tool contain the feedback control function of the direct current electrical engineering. Of the place of honor machine and next machine adopts abreast always the linear way to carry on the conjunction, making control to become very convenient.This system can carry out the direct current motive of automatic start, auto stop, the speed controls automatically, the direction controls automatically etc. function. The designing to win to make use of the LCD manifestation will specify to turn the number, turn the number physically, revolve the direction, and circulate time etc. the parameter shows to come out.This system operation is simple and builds the price low, the safe and dependable is high, controlling vivid convenience, have the higher function with again development.Key words:DC motor;single chip micro-computer;feedback control;lcd目 录第1章 绪 论11.1单片机控制调速系统发展现状11.2课题来源11.3本文主要内容2第2章 系统方案论证32.1单片机的选择32.2直流电动机驱动电路的选择42.3传感器的选择52.4键盘的选择52.5液晶显示器的选择62.6系统的总体方案6第3章 系统硬件的具体设计与实现73.1主控模块73.2电机驱动模块93.2.1基本电路单元93.2.2硬件具体实现93.3电机控制模块103.3.1基本电路单元103.3.2硬件具体实现113.4显示模块123.4.1液晶显示模块结构与特点123.4.2液晶显示模块与单片机的连接143.5键盘模块153.6速度检测模块163.7电源模块183.8定时模块193.8.1DS12887特点和功能193.8.2DS12887引脚排列和功能193.8.3控制和状态寄存器203.8.4DS12887与单片机的接口21第4章 系统软件设计224.1系统软件设计的总体思想224.2系统上位机软件设计224.2.1转速的测量224.2.2键盘的处理224.2.3通信的处理234.2.4显示的处理234.3系统下位机软件设计23第5章 系统软件流程图245.1主机主程序流程图245.2主机转速测量中断服务子程序流程图255.3主机键盘处理中断服务子程序流程图265.4下位机主程序流程图275.5下位机检测中断服务子程序流程图28第六章 结 论29参考文献30致 谢31附 录Ⅰ外文翻译 32附 录Ⅱ原理图 41附 录Ⅲ程序清单 45以上回答来自:
- 2021-06-23 05:20:39