采用模糊逻辑的半主动摩擦阻尼器对偏心结构的振动控制  

Vibration control of irregular structure using semi-active friction dampers based on fuzzy logic

作　　者：赵大海[1] 李宏男[1] 

机构地区：[1]大连理工大学海岸与近海工程国家重点实验室,辽宁大连116024

出　　处：《振动工程学报》2007年第2期112-117,共6页Journal of Vibration Engineering

基　　金：国家杰出青年科学基金(50025823);教育部创新团队资助项目(IRT0518);辽宁省自然科学基金重大项目(2001101006)资助

摘　　要：采用在结构水平双向设置半主动摩擦阻尼器的方法,对偏心结构在多维地震动作用下的振动控制问题进行了研究。首先运用时程分析法,确定小震作用下摩擦阻尼器较优的初始起滑力。然后在建立起半主动控制策略的基础上,利用Takagi-Sugeno型模糊逻辑调节作用在半主动摩擦阻尼器上的正压力,实现对偏心结构的振动控制。数值结果表明,采用这种方法对减小结构的平动反应和扭转反应都能起到较好的控制效果。For an asymmetric-plan building, that is subjected to multi-dimensional seismic inputs, by using semi-active friction dampers that are installed along two orthogonal directions, a vibration control approach is proposed. The optimum sliding force with friction damper is firstly determined by time history analysis under normal earthquakes. And then, based on the semi-active control strategy, the Takagi-Sugeno fuzzy logic model is employed to adjust the clamping force acted on the friction damper. Via numerical simulation results, it is demonstrated that the proposed method is very effective in reducing both the translational response and rotational response of irregular buildings.

关 键 词：模糊控制 结构控制 偏心结构 摩擦阻尼器 

分 类 号：TU352.1[建筑科学—结构工程]