【作者】 廖国宾； 韩晓林； 马新民；

【Author】 Liao Guobin Han Xiaolin (Department of Engineering Mechanics, Southeast University Nanjing, 210018)Ma Zinmin (Department of Mechanical Engineering, Xi’an University of Technology Xi’an, 710048)

【机构】 东南大学工程力学系； 西安理工大学机械系；

【摘要】 针对在工作状态下对设备进行模态分析这一工程界的难点,运用实际测量向量的协方差数据构造Hankel矩阵进行系统矩阵辨识,研究平衡实现法(BR)对时域信号进行分析的过程。通过算例将该法与理论计算结果进行比较,结果表明,本文讨论的方法具有较高的计算精度,对实测信号进行分析的结果可靠性较高,具有一定的实用价值。更多还原

【Abstract】 Aiming at the difficult point of modal parameter estimation from structures under operation conditions, system matrix determination are presented by using a block Hankel matriz of covariant and the procedure of the Balanced Realization for identification of modal parameters and vibration analysis is discussed in this paper. By aid of an industrial case, a comparison is made with the theory parameters and illustrate the effectiveness, the accurateness, the relizability and the value of this method.更多还原