摘要
在进行汽轮发电机组轴系扭转振动的在线监测时，一般所采用的轴系模型是在常温下用有限元方法建立的，由于计算方法和实际运行时温度变化等原因，模型存在着一定的误差，需要根据实际运行情况实时加以修正。文中讨论了利用参数辨识的方法，根据实测部分扭角和激振力数据，反推出模型参数，对模型参数进行适当的校核和修正。
When the torsional vibration of a turbo generator shafts is monitored ,the shafts model usually is formed by using the limited element method in the normal temperature Because of the influence of the calculation method accuracy and the operation temperature change, the model exists some errors However, the errors should be corrected in real time The paper presents a parameters identification method for correcting the parameters errors based on the torsional angle and the exciting vibration force measured, the parameters are calculated
出处
《现代电力》
1999年第1期1-4,共4页
Modern Electric Power
关键词
汽轮发电机组
轴系
扭转振动
参数辨识
在线监测
steam turbo generator set,shafts,torsional vibration , model , parameter identification
