摘要
将传统的TMD与磁流变阻尼器相结合 ,设计了用于高层建筑抗风的新型智能TMD。采用修正的Bingham模型来描述磁流变阻尼器的力学性能。根据滑模控制 (SMC)算法 ,研究了如何用智能TMD半主动控制系统对高层建筑的风响应进行抑制以及当控制系统的输出反馈状态受限时的控制方法。本文算例表明 ,当半主动控制策略一样时 ,最优控制和滑模控制两种控制算法的控制效果相差不大 ;当结构参数出现不确定和反馈状态受限时 。
A new kind of damper resisting wind vibration of high-rise building the smart TMD that is composed of MR damper and traditional TMD is designed.Mechanical characteristic of MR damper is expressed as modified Bingham model to simulate its force-velocity relationship.Based on method of sliding mode control,semi-active control of wind vibration for high-rise building with Smart TMD is studied using approach rule method of sliding mode state and control method utilizing limited state output feedback is presented.Results of numerical example show that comparing with optimal control the effectiveness of sliding mode control is similar when the same semi-active control strategy is taken.While considering uncertainty of structural parameters and limited state output feedback,the controller with smart TMD designed in the paper still has good control effectiveness.And chattering phenomenon is not found yet.
出处
《振动与冲击》
EI
CSCD
北大核心
2003年第4期58-61,65,共5页
Journal of Vibration and Shock
