基于T-S型模糊逻辑的半主动摩擦阻尼器对非线性结构的振动控制  

VIBRATION CONTROL OF NONLINEAR STRUCTURE BY SEMI-ACTIVE FRICTION DAMPER BASED ON T-S 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：《工程力学》2007年第12期65-71,共7页Engineering Mechanics

基　　金：国家杰出青年科学基金项目(50025823);教育部创新团队资助项目(IRT0518)

摘　　要：采用T-S(Takagi-Sugeno)型模糊逻辑调节半主动摩擦阻尼器正压力的方法对非线性结构的振动控制问题进行了研究。首先,建立了采用连续Bouc-Wen滞回模型的非线性结构控制系统运动方程,运用时程分析法确定了小震下摩擦阻尼器的初始滑动力,然后在建立半主动控制策略的基础上,采用T-S型模糊逻辑调节作用在半主动摩擦阻尼器上的正压力,实现对非线性结构的振动控制。数值分析结果表明,该方法能有效地减小非线性结构在地震激励下的峰值响应。The fuzzy logic control method based on Takagi-Sugeno model is proposed for controlling structural vibration by semi-active friction damper installed on a nonlinear building structure subjected to earthquakes. The equation of motion for nonlinear building structure with continuous Bouc-Wen hysteretic model is firstly introduced. Next, the initial sliding force with friction damper is determined by time history analysis under minor earthquakes. And then, the Takagi-Sugeno fuzzy logic model is employed to adjust the normal force acted on the friction damper according to the semi-active control strategy. Numerical simulation results demonstrate that the proposed method is very efficient in reducing the peak acceleration and inter-story drift of the nonlinear building structure under earthquake excitations.

关 键 词：结构控制 摩擦阻尼器 非线性结构 模糊逻辑 半主动控制 

分 类 号：O321[理学—一般力学与力学基础] TU311.3[理学—力学]