这个是我机械工程课程的大作业。题目是钢板磁悬浮的控制设计。本文主要是利用PID对悬浮钢板进行平衡控制。-This is my major courses in mechanical engineering operations. Entitled to control the design of magnetic steel. This article is mainly on the use of PID control to balance the suspension plate.

1.分析直流电机的机械特性，并掌握直流电机调速原理； 2.学习单片机工作原理、接口方法及编程方法； 3.学习PWM调速基本原理及软、硬件实现方法； 4.独立设计一个基于单片机的PWM直流电机调速系统，并用Proteus、Matlab等软件进行绘图与仿真； 5.分析仿真结果，提出改进方案。 -This paper introduces a kind of method of DC —motor speed modification based on PWM theory by

光斑绘图（两个舵机构成二自由度机械臂，控制激光在墙面上绘制直线、正方形、圆形、椭圆等图形）-Spot drawing (two servos constitute the two degrees of freedom manipulator, control the laser to draw a straight line on the wall, square, round, oval and other graphics)