The dynamic characteristics of a flexible ~D O F structural model, namely the stiffness and damping ratios, are identified by using the extended Kalman filtering technique. Two types of strucrural 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 AMO 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.

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SUMMARY This paper deals with a design problem of an adaptive output feedback control for discrete‐time systems with a parallel feedforward compensator (PFC), which is designed for making the augmented controlled system “Almost Strictly Positive Real” (ASPR). A PFC design scheme by a fictitious reference iterative tuning (FRIT) approach with only using an input/output experimental data set will be proposed for discrete‐time systems in order to design an adaptive output feedback control system. Furthermore, the effectiveness of the proposed PFC design method will be confirmed through numerical simulations by designing an adaptive control system with adaptive NN (neural network) for an uncertain discrete‐time system. © 2014 Wiley Periodicals, Inc. Electr Eng Jpn, 187(1): 24–32, 2014; Published online in Wiley Online Library (http://wileyonlinelibrary.com). DOI 10.1002/eej.22456

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