Parameter identification on active control of a structural model

The dynamic characteristics of a flexible 3DOF structural model, namely the stiffness and damping ratios, are identified by using the extended Kalman filtering technique. Two types of structural response datum are used for the identification. These are the structural response under base excitation generated by a shaking table and the forced vibration response due to an active mass damper (AMD) installed at the top of the model. Using the identified structural parameters, experimental results of the earthquake response of the model with the AMD control are compared with those of analytical simulation. Fairly good agreement between the experiment and the numerical simulation suggests the accuracy of the identification and the effectiveness of the vibration control by the AMD.