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本文概述了结构动力特性的测试方法；列表综合了用图解分析法确定模态参数的 公式，总结了运用图解法识别复模态参数的实践体会，并提出了判断实测数据可靠性 与选择实测数据的依据；介绍了模态参数识别程序；列出了运用图解分析法和计算机 分析法对国产６０万■汽机基础模型进行振动模态参数识别的对比结果。文中还讨论 了关于利用实测数据建立数学模型问题，并结合动力基础实际给出了在单点扰力及多 点扰力下．复模态响应值的计算公式。
This article outlines the testing methods for dynamic characteristics of structures; lists the formulas for determining modal parameters using graphical analysis, summarizes the practical experience of identifying complex modal parameters using graphical methods, and proposes the reliability of the measured data and the selection of measured data. The basis for the modal parameter identification program was introduced, and the comparison results of the vibration modal parameter identification of the domestic 600,000 steam turbine basic model using the graphical analysis method and the computer analysis method were listed. The paper also discusses the use of measured data to establish the mathematical model problem, and combines the actual basis of the power to give a single point of interference and multi-point interference. Complex modal response value calculation formula.