AN INTELLIGENT ISOLATION SYSTEM BASEDON LONG SHORT-TERM MEMORY MODULE MODEL FOR GROUND MOTION CHARACTERISTICS PREDICTION

Tzu Kang Lin, Lyan Ywan Lu, Chi Ying Lin

研究成果: Conference article同行評審

摘要

An intelligent control system based on a semi-active variable stiffness isolation system and the Long Short-Term Memory (LSTM) is proposed in this study. In the field of semi-active control, the design of control laws relies on the measurement and feedback of the structural response when an earthquake occurs. The optimal control parameters should be determined in real time to achieve the performance-oriented control target by identifying the ground motion characteristics, which have a great influence on the control performance in the early stage. To deploy the optimal control parameters, a LSTM-based module for predicting ground motion characteristics is first proposed. In addition, a sensitivity analysis using the world-wide ground motion database is also conducted, and the representative cases are selected to optimize the fuzzy inference surface for the Leverage-type Stiffness Controllable Isolation System (LSCIS). Numerical simulation indicates, by using the proposed GA-LSTM control system, prominent effect of suppressing the isolation displacement and superstructure acceleration for near-fault and far-field ground motions can be achieved respectively. Series of shaking table tests was also conducted to verify the actual control performance of the proposed system. Both numerical and experimental results have demonstrated that the proposed intelligent control system has high efficiency and reliability to protect the structures from earthquakes of all types of ground motion characteristics.

原文English
頁(從 - 到)STR-83-1-STR-83-6
期刊Proceedings of International Structural Engineering and Construction
10
發行號1
DOIs
出版狀態Published - 2023
事件12th International Structural Engineering and Construction Conference, ISEC-12 2023 - Chicago, United States
持續時間: 2023 8月 142023 8月 18

All Science Journal Classification (ASJC) codes

  • 建築
  • 土木與結構工程
  • 建築與營造
  • 安全、風險、可靠性和品質

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