基于连续小波变换的汽轮发电机组轴系扭振及其主动控制模拟试验的研究

STUDY ON ACTIVE CONTROL AND SIMULATION TEST FOR VIBRATION IN TURBOGENERATOR SHAFT SYSTEM BASED ON CONTINUOUS WAVELET TRANSFORM

根据连续小波变换具有较二进离散小波变换和小波包变换更精细的尺度分辨率的特点,提出了适用于工程界的小波变换结果的表述方法,研究了小波分析方法在汽轮发电机组轴系振动及其主动控制模拟试验中的适用性问题。通过对汽轮发电机组轴系振动及其主动控制模拟试验数据的小波分析,得到了较为满意的结论。

Continuous wavelet transform (CWT) has a finer scale resolution than dyadic discrete wavelet transform and wavelet packet transform. The describing used in engineering is proposed. The method of wavelet is applied to the active control experiments for torisional, flexural and coupling of flexural and torsional vibration. The signals are analysised by CWT. The result is satisfied by using the method and computer program proposed.