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| Compensation method for structural parameter identification with incomplete input information |
| Revised:October 08, 2000 |
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| DOI：10.7511/jslx20023066 |
| KeyWord:system identification,structural parameter,unknown input,compensation method |
| Li Jie Chen Jun |
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| Abstract: |
| 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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