周期矩形脉冲信号傅立叶级数分析，体现脉冲宽度不变，周期变化时的频域特点-periodic rectangle pulse signal FS analysis, presents its frequency domain characteristics when pulse width does not change, while the circle changes.

矩形周期脉冲信号FS分析，体现周期不变脉冲宽度改变时的频域特点-periodic rectangle pulse FS analysys. this time the circle does not change, while the pulse width changes.

用于高校学生 转子振动台轴跳动轨迹分析仿真实验。采用正交的具有相位差的两列正弦波来模拟传感器测到的X方向和Y方向的轴跳动。包括信号的时频分析，滤波处理，叠加还原和边界检验。参数可自定-For college students beat the rotor shaft vibration table trajectory analysis simulation. With orthogonal phase difference of two sine waves to simulate the s