太原理工大学学报2011，Vol.42Issue(4)：412-414,3.
工作模态参数识别方法的研究
Study of Operating Modal Parameter Identification
摘要
Abstract
It is difficult for the traditional methods to identify modal parametes of structures with overlap modal frequencies and high modal damping. With incentive-based environmental random subspace method and Polymax algorithm, this paper studied the changes of modal parameters (modal frequencies, modal damping ratios and mode shapes) in different conditions. Random subspace method is a time-domain modal identification method, and in identification of adjacent modes, it is better than some traditional modal identification methods. On the other hand,Polymax, which is also called polyreference least - squares complex frequency domain method,has a clear advantage in damping ratio identification. The comparative experiment study of an cantilever proved their effectiveness and reliability under different excitation conditions.关键词
随机子空间法/Polymax/环境激励/模态参数识别Key words
random subspace method/polymaxj environmental incentives/modal identification分类
机械制造引用本文复制引用
杨炯明,王锋,赵常举..工作模态参数识别方法的研究[J].太原理工大学学报,2011,42(4):412-414,3.基金项目
山西省攻关项目(2010032204) （2010032204）
