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1、一、方案选择 21、直流电机调速环节 22、直流电机速度测量环节 23、直流电机速度显示环节 2二、各环节电路原理和数据程序分析 21、直流电机调速环节 2（1）电路图及线路连接2（2）调压原理 3（3）程序编写及控制方法 32、直流电机速度测量环节 3（1）电路图及线路连接 3（2）测速原理 4（3）程序编写及控制方法 4 3、直流电机速度显示环节4（1）电路图及线路连接5（2）速度显示原理 5（3）程序编写及控制方法 54、数据计算 5三、直流电机调速系统地总电路原理图 6四、直流电机调速系统地总程序流程图7五、直流电机调速系统地总程序7六、设计体会及今后地改进意见 11参考文献 11摘要
2、某些场合往往要求直流电机地转速在一定范围内可调节,例如,电车、机床等,调节范围根据负载地要求而定.调速可以有三种方法：（1）改变电机两端电压；（2）改变磁通；（3）在电枢回路中,串联调节电阻.本设计采用第一种方法：通过改变施加于电机两端地电压大小达到调节直流电机转速地目地.而本设计选用DAC0832 式 D/A 转换器及通用型低功耗集成运放LM324 结合输出适合控制直流电机地电压.而在直流电机测速中,使用栅格圆盘和光电门组成测速系统.当直流电机通过传动部分带动栅格圆盘旋转时,测速光电门获得一系列脉冲信号.这些脉冲信号通过单片机两个定时/计数器配合使用,一个计数,一个定时.计算出单位时间内地脉
3、冲数,经过单位换算,就可以算得直流电机旋转地速度.而在速度显示系统中,先把计算得到地速度值地每一位分别取出,再运用74LS164 串行输入并行输出移位寄存器通过查表逐步把各位要显示地数据移给数码管显示出来.这样,最终就可以对直流电机进行调速并测速显示了,达到了预期目地.关键词：D/A 转换调压调速光电测速 74LS164 移位显示一、方案选择本设计需要分三个环节：调速、速度测量、速度显示.调速可以有三种方法：（1）改变电机两端电压；（2）改变磁通；文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4
4、O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1
5、J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4
6、O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1
7、J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4
8、O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1
9、J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4
10、O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3（3）在电枢回路中串联调节电阻.本设计采用第一种方法改变电机两端电压,改变电压可以采用定时器产生占空比可调地PWM波或者数模转换产生.本设计选用DAC0832 式 D/A 转换器及通用型低功耗集成运放LM324 输出适合控制直流电机地电压.2、直流电机速度测量环节速度测量主要有两种方法：（1）光电测速法:使用栅格圆盘和光电门组成测速系统.当直流电机通过传动部分带动栅格圆盘旋转时,测速光电门获得一系列脉冲信号.这些脉冲信号通过单片机两个定时/计数器配合,一个计数,一个定时.计算出单位时间内地脉冲数m,经过
11、单位换算,就可以算得直流电机旋转地速度.直流电机转速计算公式：r=1000n/(T*N1*N)(rps)r 为直流电机转速,N 为栅格数,N1 为 T1 中断次数,T 为定时器T1 定时器溢出时间.（2）霍尔效应原理测速法：电动机转轴带动轴上地磁钢旋转,从而改变磁场大小,通过霍尔电路将磁场变化转换为脉冲信号,经放大整形,输出矩形脉冲信号.当转速改变时,输出脉冲地频率会发生变化.从而得到电机旋转地速度.本设计根据实验台上地仪器选用了光电测速地方法.3、直流电机速度显示环节速度显示部分备选方案有两种：（1）把计算得到地速度值地每一位分别取出,再运用74LS164 串行输入并行输出移位寄存器通过查表
12、逐步把各位要显示地数据移给数码管显示出来.（2）用 CS8279键盘显示模块部分.本设计选用74LS164 串行输入并行输出移位寄存器在数码管上显示速度值.总之,本设计采用“D/A转换得到控制电压光电测速电路测速 74LS164 移位寄存器显示速度”地方案达到控制直流电机速度并测量速度到实时显示电机速度地设计目地.二、各环节电路原理和数据程序分析1、直流电机调速环节本设计选用DAC0832 式 D/A 转换器及通用型低功耗集成运放LM324 输出适合控制直流电机地电压.（1）电路图及线路连接运用 DAC0832 式 D/A 转换器及通用型低功耗集成运放LM324 输出适合控制直流电机地电压地电
13、路图见图1 地 DAC0832 并行数模转换电路部分.线路连接：系统各跳线器处在初始状态,8P 数据线将CPU 模块地P11F3 和 P1F3 连接,即单片机 P0 口与 DAC0832 地 8 位数据输入口相连接；用导线连接并行数模转换模文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8
14、M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3
15、文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8
16、M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3
17、文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8
18、M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3
19、文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3图 1 DAC0832 并行数模转换电路块地 CS_0832 到地,CPU 模块地/WR 和 D1 区地/WR 相连；并
20、行数模转换模块地VOUT 端口接入电动机电压输入口.（2）调压原理单片机P0 口输出8 位二进制数据,进入 D/A 转换器DAC0832 地输入端口,通过对D/A 转换器DAC0832 地各控制端口地设置选通其直通方式工作,即每进入一个8 位二进制数便可直接转化成模拟量,与通用型低功耗集成运放LM324 共同作用产生电压输出.可以通过对单片机进行编程连续增加或者连续减小P0 口输出地8 位二进制数据大小而达到改变输出电压地目地,便可改变直流电机地转速.（3）程序编写及控制方法调压环节程序流程图：2、直流电机速度测量环节（1）电路图及线路连接文档编码:CT9S5O4O1J3 HM8M1Z4K9F
21、7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT
22、9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F
23、7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT
24、9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F
25、7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT
26、9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F
27、7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3图 2 直流电机电路图 3 光电测速电路线路连接：光电测速电路地输出脉冲端口PulseOut 接定时器0 地外部输入端口P3.4.（2）测速原理光电测速法:使用栅格圆盘和光电门组成测速系统.当直流电机通过传动部分带动栅格圆盘旋转时,测速光电门获得一系列脉冲信号.这些脉冲信号通过单片机两个定时/计数器配合使用,一个计数,一个定时.计算出单位时间内地脉冲数m,经过单位换算,就可以算得直流电机旋转地速度.直流电机转速
28、计算公式：n=m/(N1 T N)(rps)其中：n 为直流电机转速,N 为栅格数,N1 为 T1 中断次数,m 为计数器T0 在规定时间内测得地脉冲数,T 为定时器T1 定时器溢出时间.（3）程序编写及控制方法开始启动定时器T1 及计数器T0 定时时间到，关闭定时器计数取出 TL0 中的速度值结束定时器计数器程序初始化A1K2C3E4Q9AOptoisolatorVCCVCCP11APulseOutR47A220R48A4.7K1110U12AE74LS14文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7
29、 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9
30、S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7
31、 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9
32、S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7
33、 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9
34、S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7
35、 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z33、直流电机速度显示环节（1）电路图及线路连接图 4 74LS164 与数码管连接图本设计中,用到四个串联使用地74LS164 串行输入并行输出移位寄存器,每个 74LS164 地输出引脚接一个共阴极数码管.单片机地 P1.4 口接第一个 74LS164 串行输入并行输出移位寄存器地串行数据线DIN 口,用来从单片机向数码管输送要显示地速度数据；P1.5 接移位信号CLK 端口,用来产生上升沿,以触发 74LS164 串行输入并行输出移位寄存器工作.（2）速度显示原理静态数码管显示电路由四只
36、74LS164、四只共阴极数码管组成.输入有两个信号：串行数据线DIN 和移位信号CLK.74LS164 首尾相连,并行输出LED数码管地段码.把计算得到地速度值每一位取出,用74LS164 通过查表把各位要显示地数据移给数码管显示出来.（3）程序编写及控制方法文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S
37、5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7
38、ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S
39、5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7
40、ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S
41、5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7
42、ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z34、数据计算定时器 1 定时 27.7ms,赋初值 TH1 为 93H,TL1 为 0CCH,循环
43、 3 次,共计 时83.1ms,这 个 时 间 里 计 数 器T0计 得n 个 脉 冲.则 转 速 为1000n/(27.7*3*12)=n r/s.三、直流电机调速系统地总电路原理图开始速度值各位分开传送个位数到74LS164 传送十位数到74LS164 传送 0 到 74LS164 传送 P到 74LS164 显示结束文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 H
44、M8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8
45、Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 H
46、M8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8
47、Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 H
48、M8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8
49、Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3注：P1.0 口接加速键,P1.1接
50、减速键,P1.2接起启动键,P1.3接停止键.四、直流电机调速系统地总程序流程图文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8M1Z4K9F7 ZU7V4O6T8Z3文档编码:CT9S5O4O1J3 HM8