用解析法分析立辊轧机冲击振动信号

Analysis on the Shock Response Signals of the Vertical Millers with the Analytical Method

为降低复杂信号模型识别困难,采用把线性参数和非线性参数分开识别的方法.该法可用于对立辊轧机冲击振动加速度信号的识别.通过识别到的加速度信号解析式,可得到振动速度及振动位移.该解析法具有较高的消噪能力,并可识别出高精度的轧机系统振动模态参数.

For lowering the difficulty of identifying the complicated signals, the linear and nonlin.ear param- eters in the simulation models have been separated and recognized with two different methods. This means has been successfully used to identify the acceleration model of a shock response signal for the vertical mill- ers. Through the analytical expressions of the acceleration signals, the vibration velocity and vibration dis- placement signals can be easily reached. The method presented in this paper has higher de-noising ability, and the accurate modal parameters can also be identified.