直流电机调速控制系统的C语言程序(共9页).doc
精选优质文档-倾情为你奉上/MCU:AT89S51/晶振：12M#include "regX52.H"#include "math.h"#include "intrins.h"#define LCDIO P0 /定义P0口与LCD1602的数据口相接#define ON 1#define OFF 0 sbit LCD_RS=P26; sbit LCD_RW=P25; sbit LCD_EN=P24; sbit LCD_BUSY=LCDIO7; sbit SW4=P20; / 速度设置加 sbit SW3=P21; / 速度设置减 sbit SW2=P22; /停 sbit SW1=P23; / 反转 sbit IN2=P34; /红色的线 sbit PWM=P35; /黄色的线 sbit IN1=P36; /紫色的线 int display; int flag; int time; int a; int s=25; unsigned long int p; unsigned long int xiao; unsigned long int h; unsigned long int v; unsigned char dispbuff4; /存放各位数据/*1ms延时子程序*/void delay_nms(unsigned int n) unsigned int i; unsigned char j; for(i=0;i<n;i+) for(j=0;j<120;j+) ; /空操作/*1ms延时子程序*/*0.1ms延时子程序*/void control_speed(unsigned int n) unsigned char j; for(j=0;j<n;j+) ; /空操作/*0.1ms延时子程序*/#define uchar unsigned char#define uint unsigned int/LCD驱动void LCD_check_busy(void) /检测LCD状态,看它是不是还在忙呢do LCD_EN=0; LCD_RS=0; LCD_RW=1; LCDIO=0xff; LCD_EN=1; while(LCD_BUSY=1); LCD_EN=0;/*LCD1602写命令*/void LCD_send_command(uchar command,busy1)if(busy1) LCD_check_busy();LCD_RS=0;LCD_RW=0;LCD_EN=1;LCDIO=command;LCD_EN=0;/*LCD1602写数据*/void LCD_send_data(uchar dat)LCD_check_busy();LCD_RS=1;LCD_RW=0;LCD_EN=1;LCDIO=dat;LCD_EN=0;void LCD_write_char(uchar x,uchar y,uchar dat) unsigned char address; if (x=0) address=0x80+y; else address=0xc0+y; LCD_send_command(address,0); LCD_send_data(dat);/*LCD1602显示字符串*/void LCD_disp_string(uchar x,uchar y,uchar *Data)if(x=0) if(y<16) LCD_send_command(0x80+y,0); for(;y<16&&*Data!='0'y+) LCD_send_data(*(Data); Data+; if(*Data!='0') y=0; x=1; if(x=1) LCD_send_command(0xc0+y,0); for(;y<16&&*Data!='0'y+) LCD_send_data(*(Data);Data+; void LCD_init(void)delay_nms(15);LCD_send_command(0x38,0);delay_nms(5);LCD_send_command(0x38,0);delay_nms(5);LCD_send_command(0x38,0);delay_nms(5);LCD_send_command(0x38,1);/设置lcd1602为每个字符5×7显示LCD_send_command(0x0f,1); /开显示，光标显示并闪烁LCD_send_command(0x06,1);/光标移动设置，每写一个数，光标自动加一LCD_send_command(0x01,1); /清屏/*LCD1602的初始化完毕*/ /*初始化函数*/void init()IT1=1;/脉冲触发方式EA=1;/中断总允许EX1=1;/允许外部中断1TMOD=0x91;TH0=0x3c;TL0=0xb0;/给定时器赋初值ET0=1;/允许定时中断TR0=1;/启动定时器/*定时器，外部中断初始化*/void main() int mode; int vs=50; /速度设置参数 int Y= 2;int k=0;init();LCD_init();LCD_disp_string(0,0x00,"set speed:");LCD_disp_string(1,0x00,"V=");LCD_disp_string(1,0x05,"Hz");while(1) /*按键模式一些控制*/if(SW4=0)/设定速度加xiao+;if(xiao>100) xiao=0;vs+;if(vs>100)vs=100; if(SW3=0)/设定速度减 xiao+;if(xiao>100) xiao=0;vs-;if(vs<8)vs=8; if(SW2=0)/开关键 delay_nms(100); if(SW2=0)if(mode!=0) mode=0;elsemode=1; delay_nms(150); if(SW1=0)/正反转 delay_nms(100); if(SW1=0)if(mode=2) mode=1;elsemode=2; delay_nms(150); /*按键模式一些控制*/*电机运行模式选择*/switch(mode) case 0x00: /关闭电机 PWM = OFF; break; case 0x01: /正转 IN1 = 0; /p36 紫线IN2 = 1; /p34 红线PWM = 1; /p35 黄线 （控制速度）control_speed(s);PWM = 0; /p35 黄线control_speed(100-s); break; case 0x02: /反转 IN1 = 1; /p36 紫线IN2 = 0; /p34 红线PWM = 1; /p35 黄线control_speed(s);PWM = 0; /p35 黄线control_speed(100-s);break; default:break; /*电机运行模式选择*/*速度计算显示*/if(display=1)display=0;/一秒钟显示一次dispbuff3=(v/100); dispbuff2=(v/10%10); / dispbuff1=(v%10); / LCD_write_char(1,0x02,(dispbuff3)+48); /LCD_write_char(1,0x03,(dispbuff2)+48);LCD_write_char(1,0x04,(dispbuff1)+48);LCD_write_char(0,0x0a,(vs/100)+48);LCD_write_char(0,0x0b,(vs/10)%10+48);LCD_write_char(0,0x0c,(vs%10)+48);switch(mode) case 0x00: /关闭电机 LCD_disp_string(1,0x07,"-stop"); break; case 0x01: /正转 LCD_disp_string(1,0x07,"->work"); break; case 0x02: /反转 LCD_disp_string(1,0x07,"<-work");break; default:break; /*速度计算显示*/*速度自动调节（每一秒调节一次）*/ if(v>(vs+Y*2) /速度过大，快速调节 s=s-3; if(s<8)s=8; if(v-Y)>=vs>=(v-Y*2) /速度过大， 慢速调节。 s=s-1; /delay_nms(1);if(s<8)s=8; if(vs>(v+Y*2) /速度过大，快速调节 s=s+3; if(s>95)s=95; if(vs-Y)>=v>=(vs-Y*2) /速度过大， 慢速调节。 s=s+1; /delay_nms(1);if(s>95)s=95; else s=s;/*速度自动调节（每一秒调节一次）*/ /*频率进入端口*/void inter1() interrupt 2p+; void timer0() interrupt 1/定时中断入口TH0=0x3c;TL0=0xb0; / 50ms /定时器赋值time+;if(time>=20) /一秒time=0;v=p/2;p=0;xiao=0;display=1;专心-专注-专业
