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本文给出随机振动数据处理中的两个通用优化程序,可用于识别结构的模态参数。文中并给出相应的误差分析。对于振型耦合较弱的线性系统,采用本文介绍的优化识别方法更为简便。文中给出石油钻井架和三层砖楼房模型的模态参数优化结果,并与其它方法做了比较,结果是令人满意的。
This paper presents two general optimization procedures for the processing of random vibration data that can be used to identify the modal parameters of the structure. The article gives the corresponding error analysis. For a linear system with weak coupling of mode shapes, the optimization identification method described in this paper is more convenient. The modal parameter optimization results for oil drilling rigs and three-storey brick building models are presented and compared with other methods. The results are satisfactory.