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建筑结构地震响应半主动控制的遗传-模糊算法

, PP. 127-133

Keywords: 建筑结构,地震响应,模糊逻辑,半主动控制,遗传算法

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Abstract:

本文针对建筑结构地震响应半主动控制问题,应用基于遗传算法优化模糊规则库的遗传―模糊控制方法,通过MR阻尼器实现减小建筑结构地震响应。将结构的位移和加速度响应峰值控制双重指标作为目标函数,运用遗传算法的基本操作得到一组优化的模糊推理规则。以结构位移、加速度、地震加速度信号作为输入量,以MR阻尼器所提供的控制力为输出量,分别构造单阻尼器和多阻尼器的模糊控制策略。以某3层和6层框架结构为例,分别对两种遗传―模糊控制算法进行数值仿真分析,并与LQR最优控制结果进行比较。数值分析结果表明,采用遗传―模糊算法能够有效地减小结构的地震响应。

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