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李杰,$2.部分输入未知时求解动力复合反演问题的补偿算法[J].计算力学学报,2002,19(3):310~314
部分输入未知时求解动力复合反演问题的补偿算法
Compensation method for structural parameter identification with incomplete input information
  修订日期:2000-10-08
DOI:10.7511/jslx20023066
中文关键词:  系统识别,结构参数,未知输入,补偿算法
英文关键词:system identification,structural parameter,unknown input,compensation method
基金项目:国家杰出青年科学基金资助项目 ( 5 982 5 10 5 )
李杰  $2
同济大学建筑工程系 上海200092 (李杰)
,同济大学建筑工程系 上海200092(陈隽)
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中文摘要:
      将作者提出的全量补偿算法[8] 推广为一类适用于一般多自由度系统的时域补偿识别算法。该方法是基于最小二乘原则的一类迭代计算方法 ,对于结构上的部分作用力已知的情况 ,可用来同时识别结构的参数并反演输入。文中应用不同类型的结构分析实例说明了此方法适用于实际工程动力检测的可能性。
英文摘要:
      A new time domain identification method called Compensation Method is proposed in this paper for solving structural parameter identification with incomplete input information. The method is applied to the situation when the loads acting on some parts of the structure are known. An iterative procedure based on least square criterion is used for inversing load process and estimating structural parameters, simultaneously. The key link of the method is that, the known input information is employed in each iterative step to replace the estimated values. A fifteen story building and a truss bridge as the numerical examples are given for evaluating the validity of the method. The noise free measurements as well as noise included measurements are considered in the numerical analysis processes to verify the robustness of the proposed algorithm. The numerical studies show that the proposed method has favorable characteristics, such as high accuracy, insensitivity to initial parameter guess and adaptability.
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