机电一体化课程设计-光电编码器判别电路和12位计数电路设计

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1、学号：08406202常州大学课程设计（说明书）（08届）题目光电编码器判别电路和12位计数电路设计学生学院机械工程学院专业班级机制082校内指导教师专业技术职务教授二○一二年一月常州大学本科生课程设计（说明书）光电编码器判别电路和12位计数电路设计摘要：整流电路是AD-DC电能转换电路，将交流电压转变为单项脉冲电压。其中的整流元件（二极管或晶闸管）所以能整流，是因为它们具有单向导电的共同特性。在增量式光电编码器的使用中，其旋转方向的判别式首先要解决的。根据增量式光电编码器的A、B两相脉冲信号，可以使用

2、单片机采集I/O电平信号并依据其先后顺序使用软件判别旋转方向，也可以采用硬件电路通过两相信号顺序判别旋转方向。利用方向判别电路和4位二进制可逆计数器可以组成增量式光电编码器计数电路。光电编码器是高精度控制系统常用的位移检测传感器。当控制对象发生位置变化时，光电编码器便会发出A、B两路相位差90度的数字脉冲信号。正转时A超前B90度，反转时B超前A90度。脉冲的个数与位移量成比例关系，因此通过对脉冲计数就能计算出相应的位移。关键词：光电编码器；判别电路；计数电路；预置电路；整流电路20常州大学本科生课程设

3、计（说明书）目录摘要····························································································Ⅰ目录····························································································Ⅱ引言······················································

4、······································Ⅲ任务书························································································Ⅳ1总体设计方案········································································12控制电源电路设计··································

5、·······························22.1元件选择················································································22.2电路原理················································································43判别电路·········································

6、·······································53.1元件选择················································································53.2电路原理················································································10412位计数电路·····························

7、···········································114.1元件选择················································································114.2电路原理················································································145预置电路··························

8、······················································156电路原理图及PCB印刷电路··············································167小结体会················································································18参考文献·············