基于STC89C52单片机的点焊机控制系统的软件设计.doc

毕业设计题目 基于 STC89C52 单片机的点焊机控制系统的软件设计 一、 毕业论文（设计）的主要内容及要求： 1、主要内容： （1） 、收集和查阅点焊机的相关资料； （2） 、掌握现有点焊机系统的基本原理及进行优劣分析； （3） 、明确点焊机系统所要达到的要求和实现方法； （4） 、掌握 51 单片机的基本原理与 ADC0832 模数转换芯片使用； （5） 、画出点焊机系统的总体设计框图； （6） 、画出电流、电压、工件准备信号、等程序流程图； （7） 、编写点焊机系统各部分程序； （8） 、指标要求：设计终点监测点焊机系统，实现人工设定，自动完成工件点 焊； 2、要求： （1） 、认真分析设计课题，了解设计任务查阅相关资料，按要求完成开题报告。 （2） 、遵守院相关规定和纪律，服从指导老师和实验室工作人员安排做好毕业 实 习和具体实验。 （3） 、保质保量按时完成论文撰写工作应完成的成果。 （4） 、完善的点焊机状态监测系统软件设计。 （5） 、撰写高质量论文。 二、 毕业论文（设计）应收集的资料及主要参考文献： 1中国机械网.中国焊接行业的发展现状及未来展望OL.2005.10 2殷树言、邵青莲.coz 焊接技术及应用M.哈尔滨：哈尔滨工业大学出版社， II 1989.5 3姚河清、陈亚政、孟庆芹.现代焊接技术发展的现状及展望J.南京：河海大学 2004.9 124-134 4林三宝、黎明、吴林.计算机在焊接中的应用现状及发展前景J，焊接，2000.8 23-56 5杨光，焊接自动化技术的现状及展望J.现代制造，2004.11 124-145 6林奕鸿等，机床数字控制技术及其应用.北京：机械工业出版社,1994.8 7徐宏.计算机数字控制技术（CNC）最新发展动态M.机械制造.1996.9 8秦继荣，沈安俊.现代直流伺服控制技术及系统设计.北京：机械工业出版社, 1993.9 9陈维山，赵杰.机电系统计算机控制。哈尔滨：哈尔滨工业大学出版社，1999.2 10Granham T.Smith CNC Machining TechnologyM. Springerer-Verlag London Limtied.1993.6 11Anthony kushigian CNC dressers improve productivity,flexibility.M Tooling /定义档位 TMOD |=0x01; /定时器设置 0.01ms in 12M crystal TH0=(65536-10)/256; TL0=(65536-10)%256; /定时 0.01mS IE= 0x82; /打开中断 TR0=1; getdata=0; CYCLE = 256; / 时间可以调整 这个是 256 步调整 周期 2.56ms 8 位 PWM 就 是 256 步 PWM_ON=0； while(INPUT=0) PWM_ON=getdata； /将 ADC 转换后的值输入到占空比 getdata=Adc0832(0); if(getdata0x2d) /当电流较大或者较小时，及时的调整矫 正 PWM_ON=0； Break； 18 5.3.25.3.2 ADC0832ADC0832 转换程序转换程序 ADC0832 时序图如图 6 所示。 图图 6 6 ADC0832ADC0832 时序图时序图 unsigned int Adc0832(unsigned char channel) /AD 转换，返回结果 uchar i=0; uchar j; uint dat=0; uchar ndat=0; if(channel=0)channel=2; if(channel=1)channel=3; ADDI=1; _nop_(); _nop_(); ADCS=0;/拉低 CS 端 _nop_(); _nop_(); ADCLK=1;/拉高 CLK 端 _nop_(); _nop_(); ADCLK=0;/拉低 CLK 端,形成下降沿 1 19 _nop_(); _nop_(); ADCLK=1;/拉高 CLK 端 ADDI=channel _nop_(); _nop_(); ADCLK=0;/拉低 CLK 端,形成下降沿 2 _nop_(); _nop_(); ADCLK=1;/拉高 CLK 端 ADDI=(channel1) _nop_(); _nop_(); ADCLK=0;/拉低 CLK 端,形成下降沿 3 ADDI=1;/控制命令结束 _nop_(); _nop_(); dat=0; for(i=0;i=1; ADCS=1; /拉低 CS 端 ADCLK=0; /拉低 CLK 端 ADDO=1; /拉高数据端,回到初始状态 / dat /包含头文件，一般情况不需要改动，头文件包含特殊 功能寄存器的定义 #include “intrins.h“ #define uint unsigned int #define uchar unsigned char sbit INPUT=P21 sbit PWM= P15; /定义调速端口 unsigned char CYCLE; /定义周期 该数字 X 基准定时时间 如果是 256 则周期 是 256x 0.01ms unsigned char PWM_ON ;/定义高电平时间 /ADC0832 的引脚 sbit ADCS =P10; /ADC0832 芯片选择 sbit ADDI =P12; /ADC0832 k 输入 sbit ADDO =P12; /ADC0832 k 输出 sbit ADCLK =P11; /ADC0832 时钟信号 uint temp; uchar getdata; /获取 ADC 转换回来的值 /*/ /* 延时函数 */ /*/ void delay(unsigned int cnt) while(-cnt); 26 /* 读 ADC0832 函数 */ /采集并返回 unsigned int Adc0832(unsigned char channel) /AD 转换，返回结果 uchar i=0; uchar j; uint dat=0; uchar ndat=0; if(channel=0)channel=2; if(channel=1)channel=3; ADDI=1; _nop_(); _nop_(); ADCS=0;/拉低 CS 端 _nop_(); _nop_(); ADCLK=1;/拉高 CLK 端 _nop_(); _nop_(); ADCLK=0;/拉低 CLK 端,形成下降沿 1 _nop_(); _nop_(); ADCLK=1;/拉高 CLK 端 ADDI=channel _nop_(); _nop_(); 27 ADCLK=0;/拉低 CLK 端,形成下降沿 2 _nop_(); _nop_(); ADCLK=1;/拉高 CLK 端 ADDI=(channel1) _nop_(); _nop_(); ADCLK=0;/拉低 CLK 端,形成下降沿 3 ADDI=1;/控制命令结束 _nop_(); _nop_(); dat=0; for(i=0;i=1; ADCS=1; /拉低 CS 端 ADCLK=0; /拉低 CLK 端 ADDO=1; /拉高数据端,回到初始状态 /dat0x2d) PWM_ON=0； Break； /*/ /* 定时器中断函数 */ /*/ void tim(void) interrupt 1 using 1 static unsigned char count=0; / TH0=(65536-10)/256; TL0=(65536-10)%256;/定时 0.01mS if (count=PWM_ON) PWM= 0; count+; if(count = CYCLE) count=0; if(PWM_ON!=1) /如果左右时间是 0 保持原来状态 PWM = 1; 30 致谢致谢 历时将三个多月的时间终于将这篇论文写完，在论文的写作过程中遇到了 无数的困难和障碍，都在同学和老师的帮助下度过了。在校图书馆查找资料的 时候，图书馆的老师和同学也给我提供了很多方面的支持与帮助。在此向帮助 和指导过我的各位老师表示最衷心的感谢！ 特别感谢廖老师的对论文的格式提出的修改意见，苛刻而又一丝不苟的严 谨风格让学生受益匪浅，我也认识到自己学习中的不足。 感谢这篇论文所涉及到的各位学者。本文引用了十几位学者的研究文献， 如果没有各位学者的研究成果的帮助和启发，我将很难完成本篇论文的写作。 感谢我的各位同学和朋友，在我写论文的过程中给予我了很多你们的资料， 在与各位的讨论中对论文的进行了修改，还在论文的撰写和画图的过程中提供 热情的帮助,在此真诚表达我的谢意! 由于我的学术水平有限，所写论文难免有不足之处，恳请各位老师和学友 批评和指正！ 内部资料， 请勿外传！ 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