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Active mass driver system as the first application of active structural control
Author(s) -
Ikeda Yoshiki,
Sasaki Katsuyasu,
Sakamoto Mitsuo,
Kobori Takuji
Publication year - 2001
Publication title -
earthquake engineering and structural dynamics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.218
H-Index - 127
eISSN - 1096-9845
pISSN - 0098-8847
DOI - 10.1002/eqe.82
Subject(s) - engineering , linear quadratic regulator , controller (irrigation) , control (management) , control system , vibration control , building model , structural system , system identification , control theory (sociology) , vibration , control engineering , structural engineering , computer science , simulation , data modeling , artificial intelligence , physics , electrical engineering , software engineering , quantum mechanics , agronomy , biology
An active mass driver (AMD) system has been installed in a ten‐storey office building in Tokyo to suppress vibration in both one‐translational and the torsional directions under earthquake and wind loadings. This installation is the first application of active structural control in the civil engineering field. This paper describes the objective building and its dynamic properties, the composition and specification of the AMD system, the control strategy, the control purpose, and the system's effectiveness based on observation records. The control strategy has basically been introduced as an output feedback control law that is simplified from a state feedback control law in the linear quadratic regulator problem. The responses of both the structure and the AMD system have been recorded since 1989. A structure–controller interaction model is identified to simulate the earthquake observation records and to compare them with the analysed uncontrolled responses. An ARX model is fitted to each set of these observation records to evaluate the control effectiveness as equivalent damping ratios in the vibration modes. Both the simulation and the system identification confirm that the AMD system achieves the control purpose under earthquake excitations. The wind observation records also show high control effectiveness. Copyright © 2001 John Wiley & Sons, Ltd.