以单片机控制步进电机的运行速度、方向、行走距离的长短-Single-chip stepper motor to control speed, direction, running the length of the distance

简单的一个java文本阅读器，可以自动阅读控制阅读速度设置字体大小颜色-Simple java text reader, you can automatically read to control the reading speed to set the font size and color

用PId控制算法，实现永磁直线电机的速度与位置的跟踪-With PId control algorithm to achieve the permanent magnet linear motor speed and position tracking