基于多级模糊控制的半主动隔震结构减震研究

赵大海1,李永兴1,李宏男2,钱辉3

振动与冲击 ›› 2016, Vol. 35 ›› Issue (13) : 78-84.

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振动与冲击 ›› 2016, Vol. 35 ›› Issue (13) : 78-84.
论文

基于多级模糊控制的半主动隔震结构减震研究

  • 赵大海1,李永兴1,李宏男2,钱辉3
作者信息 +

Seismic reductions investigation of semi-active base-isolated structure based on multi-level fuzzy control

  • ZHAO Da-hai 1, LI Yong-xing 1, LI Hong-nan 2, QIAN Hui 3
Author information +
文章历史 +

摘要

提出了一种基于压电摩擦阻尼器的新型模糊控制器,对其在半主动隔震结构中的减震效果进行研究。该控制器引入多级式模糊控制策略,其中次级模糊控制器以隔震层的速度和位移为输入,以阻尼器的电压为输出;高级模糊控制器以地震动加速度为输入,实时调整次级模糊控制的量化因子及比例因子。为检验多级模糊控制方法的有效性,对一隔震结构进行数值模拟,并与被动控制和普通模糊控制的减震效果进行对比。数值结果表明:该方法能有效地降低隔震结构的基底位移和上部结构的加速度响应,并且对不同强度的地震动具有良好的适应性。

Abstract

A new type of fuzzy control controller, which is designed for seismic protection of a base-isolated building with piezoelectric friction damper, is presented in this study. The controller adopts a multi-level fuzzy control algorithm. The sub-level fuzzy controller is designed to determine the command voltage of the piezoelectric friction damper by the input of the acceleration and displacement of base floor. According to the current level of the seismic acceleration, the high-level fuzzy controller governs a sub-level fuzzy controller by altering its input quantization factors and scaling factor in real-time. The efficiency of the proposed multi-level fuzzy controller is also investigated through numerical simulations of a base-isolated structure. For comparison purpose, the traditional fuzzy controller and passive controller are conducted with the proposed multi-level fuzzy control method. Numerical results show that the developed fuzzy logic controller not only can successfully mitigate the displacement of base floor and the superstructure acceleration response, but also has favorably adaptability subjected to different intensity ground motions.

 

关键词

模糊控制 / 隔震结构 / 半主动控制 / 减震

Key words

fuzzy control / base-isolated structure / semi-active control / seismic reductions

引用本文

导出引用
赵大海1,李永兴1,李宏男2,钱辉3. 基于多级模糊控制的半主动隔震结构减震研究[J]. 振动与冲击, 2016, 35(13): 78-84
ZHAO Da-hai 1, LI Yong-xing 1, LI Hong-nan 2, QIAN Hui 3. Seismic reductions investigation of semi-active base-isolated structure based on multi-level fuzzy control[J]. Journal of Vibration and Shock, 2016, 35(13): 78-84

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