At last,the experiment was made to investigate the pedestal looseness by model test rig and the fault signals were analyzed by the 3D waterfall spectra,trajectory and wavelet scalogram.

• 最后利用转子模型实验台,对支座松动故障进行实验研究,采用三维瀑布图、轴心轨迹图和小波尺度图对故障信号进行了分析研究。