摘要
本文从粘性阻尼系统的状态方程出发,应用复模态理论,提出了一种在时域和频域中识别振动系统的物理参数的方法.文中采用了双最小二乘逼近识别系统的模态参数.在识别物理参数时,可采用不同测点的数据进行计算,以求达到更好的精度.
This paper starts at the state equations of vibration system with viscous damping,applies the complex modal theory to present a method for physical parameter identification of a vibration system in time and frequency domains.The double least squares approach is used to identify the modal parameters.In physical parameter identification,the data of different measured points are used to calculate more accurate results.
出处
《振动工程学报》
EI
CSCD
1990年第3期60-64,共5页
Journal of Vibration Engineering
关键词
物理参数
状态空间
粘性阻尼
振动
physical parameter identification
viscous damping
complex modes
