基于磁流变阻尼器的多种控制组合振动台研究
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摘要
用带有DR—1005—3型磁流变阻尼器、调谐质量阻尼器及橡胶隔震垫的三层框架模型结构进行了减震控制实验。依据LQG控制算法得到最优控制。在Simulink环境下编制实时控制软件,对阻尼器进行出力控制。分别进行只带磁流变阻尼器、调谐质量阻尼器以及橡胶隔震垫子系统和各个子系统组合的七种振动台实验。试验结果表明:基于MR阻尼器的控制系统是有效的,可以显著降低模型结构的加速度响应。将磁流变阻尼器与调谐质量阻尼器和橡胶隔震垫进行组合使用可以得到更好的控制效果。
The damping control experiments of a three-layer framework structure,which contains DR—1005— 3 magnetorheological dampers,tuned mass dampers and rubber isolation pads,were studied.Optimal control was obtained by adopting the LQG control algorithm.The output control of dampers was studied based on the real-time control software Simulink seven kinds of shaking table tests,i.e.the shaking table with magnetorheological dampers,the shaking table with tuned mass dampers,the shaking table with rubber isolation pads and the shaking table with the combinations of each subsystem,were carried out.The experimental results show that the control system based on the MR dampers is effective.The system can significantly reduce the acceleration response of the structure.And the combination of magnetorheological dampers,tuned mass dampers and rubber isolation pads has a better control effect and performance.
The damping control experiments of a three-layer framework structure,which contains DR—1005— 3 magnetorheological dampers,tuned mass dampers and rubber isolation pads,were studied.Optimal control was obtained by adopting the LQG control algorithm.The output control of dampers was studied based on the real-time control software Simulink seven kinds of shaking table tests,i.e.the shaking table with magnetorheological dampers,the shaking table with tuned mass dampers,the shaking table with rubber isolation pads and the shaking table with the combinations of each subsystem,were carried out.The experimental results show that the control system based on the MR dampers is effective.The system can significantly reduce the acceleration response of the structure.And the combination of magnetorheological dampers,tuned mass dampers and rubber isolation pads has a better control effect and performance.
引文
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2 Sandu C,Southward S.Richards R.Comparison of linear,nonlinear,hysteretic,and probabilistic models for magnetorheological fluid damp-ers.Journal of Dyanmic Systems,Measurement,and Control(ASME),2010;132(6):1—9
3吕杨,徐龙河,李忠献,等.磁流变阻尼器优化设计及结构地震损伤控制.工程力学,2012;29(8):94—100
4 Yang G,Spencer B F JR,Carlson J D,et al.Large-scale MR fluiddampers:modeling anddynamic performance considerations.Engineer-ing structures,2002;24(3):309—323
5欧进萍.结构振动控制-主动、半主动和智能控制.北京:科学出版社,2003
6周云,徐龙河,李忠献.半主动磁流变阻尼器控制结构的地震反应分析.地震工程与工程振动,2000;20(2):107—111
7周云,吴志远,梁兴文.磁流变阻尼器对高层建筑风振反应的半主动控制.地震工程与工程振动,2001;21(4):159—162
8胡家亮,周丽.基于磁流变阻尼器的结构模糊半主动控制实验研究.震动与冲击,2009;(3):42—43
9刘强,苏泽斌.基于ANFS的MR智能基础隔震地震反应分析.贵州大学学报(自然科学版),2009;26(6):111—114
10于国军.基于磁流变阻尼器技术的结构振动混合控制理论与试验研究.南京:河海大学,2007
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