一种物美价廉的基于LabVIEW的PID控制实验装置设计

摘要

为了使学生掌握用LabVIEW实现计算机控制，用STC12单片机设计了一块接口卡，该卡将电机的位置数据反馈给上位机的LabVIEW程序，并接收LabVIEW程序发来的命令以控制电机转动，学生可任意、随时改变PID参数和采样时间，观察对应的现象，从而深入理解计算机控制原理。%For the purpose of making students handle the technology of computer controlling with LabVIEW , an interface card is designed with STC12. The card can feed the motor’s position back to a computer which is running LabVIEW ,and the card can also receive the order from LabVIEW to control the motor. Students can change the parameters and observe the phenomena so as to understand the theory deeply .