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JOURNAL OF STRUCTURAL MECHANICS AND EARTHQUAKE ENGINEERING
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Identification of restoring force characteristics of nonlinear systems during earthquakesD
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A method was developed to identify parameters on a hysteretic restoring system of non-degrading type by appling the Extended Kalman filter incorporated with a weighted global iteration. The method is based on a simplified versatile hysteretic model by Boucand Wen. By this method a nonlinear model of non-degrading type equivalent to any hysteretic system may be identified in terms of the model's parameters at the stage of their stable convergency to optimal ones. Numerically simulated data were used for the verification of the method.
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