The discontinuous phase method combined with eddy current sensor is introduced to acquire blade dynamic signal 。 the author designed the program of computing blade vibration parameters and have made computer simulation , so we can get blade amplitude and frequency 提出采用间断相位法和电涡流传感器结合来获得叶片的振动信号,编制了测量叶片振动参数的计算程序,并进行了计算机模拟仿真,得到了叶片振动振幅和频率。