在数控系统中实现高速高精加工的nurbs插补，这个代码是在matlab对其进行的仿真-In the NC system to achieve high-speed and high precision of nurbs interpolation, this code is carried out in the matlab simulation

用m文件编写实现四象限的圆弧插补程序，可用2010以上版本的matlab打开运行 用m文件编写实现数字PID，可用2010以上版本的matlab打开运行-M file written with four quadrant circular interpolation procedures used to open more than 2010 ver