本程序是关于三次样条差值算法的仿真，内容非常详细，希望能需要他的人有所帮助。-This program is on the cubic spline difference algorithm simulation, the content is very detailed, hope to those who need his help.

matlab实现的阶次分析算法，用于变转速机械故障特征提取，可运行，包含寻找脉冲时刻，等角度时刻，数字跟踪滤波，样条差值等步骤(The order analysis algorithm realized by Matlab is used to extract the fault features of variable speed machinery. It can be operated, including the steps of finding impulse moment, equa