Experimental study of a piezoelectric sliding isolation system for seismic protection of equipment

Lyan-Ywan Lu, Ging Long Lin, Jiun Hung Hung, Yung Tien Liu

研究成果: Conference contribution

摘要

The magnitude and content of an earthquake is usually hard to be predicted precisely. To make seismic isolation systems more adaptive to earthquake motions that may have diverse characteristics, a semi-active isolation system called the "Piezoelectric Sliding Isolation System (PSIS)" is introduced in this study for the seismic protection of precision equipment. The PSIS system is composed of a sliding isolation platform and a piezoelectric friction damper (PFD). Depending on the feedback signal of the PSIS response, the friction force of the PFD can be regulated on-line by an embedded piezoelectric actuator. As a result, the seismic response of the PSIS can be effectively controlled and mitigated. The feasibility of the PSIS is verified dynamically via a shaking table test in this study, and the comparison between the experimental and theoretical results has shown the good consistency. The experimental results also demonstrate that, the PSIS is able to substantially suppress both the displacement and acceleration responses in an earthquake with either near-fault or far-field characteristics. The study also shows that, even though the semi-active PSIS system can only provide a passive control force, it is able to achieve the same level of control performance as an actively controlled isolation system, which shares the same optimal feedback gain as that of the PSIS.

原文English
主出版物標題Proceedings of the 8th International Conference on Structural Dynamics, EURODYN 2011
編輯G. Lombaert, G. Muller, G. De Roeck, G. Degrande
發行者University of Southampton, Institute of Sound Vibration and Research
頁面1962-1967
頁數6
ISBN(電子)9789076019314
出版狀態Published - 2011 一月 1
事件8th International Conference on Structural Dynamics, EURODYN 2011 - Leuven, Belgium
持續時間: 2011 七月 42011 七月 6

出版系列

名字Proceedings of the 8th International Conference on Structural Dynamics, EURODYN 2011

Other

Other8th International Conference on Structural Dynamics, EURODYN 2011
國家Belgium
城市Leuven
期間11-07-0411-07-06

All Science Journal Classification (ASJC) codes

  • Hardware and Architecture
  • Computer Networks and Communications
  • Control and Systems Engineering
  • Electrical and Electronic Engineering

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