Since the Hanshin-Awaji Earthquake Disaster, the number of isolated structures has been greatly increased. The natural period of the isolation system is designed around 3 seconds, because predominate period of observed seismic waves is usually 0.1 to 1 second. However, relatively long period seismic waves have been observed in various earthquakes, and the resonance of long-period structures, such as high-rise buildings, during earthquakes have been reported at the same time. Therefore the natural period needs to be extended. When extending the natural period of the isolated structure using rubber bearings, its stiffness needs to be reduced. It is more difficult to extend the natural period of the isolation system than the conventional system because of its buckling problem. Therefore we propose a super-long-period active seismic isolation system as a new method for extending the natural period of the isolated structure. This system consists of rubber bearings and actuators. In this study, we designed a control system by using the model-matching-method. This is one of the classical control system design methods. We investigated the isolation performance by numerical analysis. In addition, we selected the optimal variables of transfer function using genetic algorithm.
Skip Nav Destination
ASME/JSME 2004 Pressure Vessels and Piping Conference
July 25–29, 2004
San Diego, California, USA
Conference Sponsors:
- Pressure Vessels and Piping Division
ISBN:
0-7918-4668-7
PROCEEDINGS PAPER
Fundamental Study on the Super-Long-Period Active Isolation System Available to Purchase
Keisuke Minagawa,
Keisuke Minagawa
Tokyo Denki University, Chiyoda-ku, Tokyo, Japan
Search for other works by this author on:
Satoshi Fujita
Satoshi Fujita
Tokyo Denki University, Chiyoda-ku, Tokyo, Japan
Search for other works by this author on:
Keisuke Minagawa
Tokyo Denki University, Chiyoda-ku, Tokyo, Japan
Satoshi Fujita
Tokyo Denki University, Chiyoda-ku, Tokyo, Japan
Paper No:
PVP2004-2288, pp. 135-141; 7 pages
Published Online:
August 12, 2008
Citation
Minagawa, K, & Fujita, S. "Fundamental Study on the Super-Long-Period Active Isolation System." Proceedings of the ASME/JSME 2004 Pressure Vessels and Piping Conference. High Pressure Technology: Innovations and Advances in High Pressure Technology; 12th Annual ASME/PVPD 2004 Student Paper Competition. San Diego, California, USA. July 25–29, 2004. pp. 135-141. ASME. https://doi.org/10.1115/PVP2004-2288
Download citation file:
8
Views
Related Proceedings Papers
Related Articles
Fundamental Study on the Super-Long-Period Active Isolation System
J. Pressure Vessel Technol (November,2006)
Robust Feedback Control of a Baffled Plate via Open-Loop Optimization
J. Vib. Acoust (January,2002)
An Experimental Study on the Seismic Response of Base-Isolated Secondary Systems
J. Pressure Vessel Technol (February,2002)
Related Chapters
Smart Semi-Active Control of Floor-Isolated Structures
Intelligent Engineering Systems Through Artificial Neural Networks, Volume 17
Summary and Conclusions
Bearing Dynamic Coefficients in Rotordynamics: Computation Methods and Practical Applications
Accuracy of an Axis
Mechanics of Accuracy in Engineering Design of Machines and Robots Volume I: Nominal Functioning and Geometric Accuracy