MR阻尼器对建筑结构地震反应的半主动H_∞控制
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摘要
研究应用MR阻尼器对建筑结构地震反应进行半主动控制的算法和原理。介绍了MR阻尼器的恢复力模型,并对其参数进行了设计,提出了基于全状态反馈与基于观测器的半主动H∞ 控制律。通过对装有两个MR阻尼器的六层框架结构的地震反应分析表明,基于这两种半主动控制律的控制方法能有效地减小结构的地震反应,并且具有好的鲁棒性能。
The algorithms of semi-active control for application of MR damper to seismically excited building structures are studied in the paper. The restoring model of MR damper is introduced and the parameters of the damper are designed. Semi-active H∞ control laws based on full-state feedback and observers are proposed. A numerical simulation is made on the seismic responses of a six-story building frame structure with two MR dampers. The results show that the semi-active H∞ control using MR damper can reduce the structural seismic response efficiently and have good robustness.
The algorithms of semi-active control for application of MR damper to seismically excited building structures are studied in the paper. The restoring model of MR damper is introduced and the parameters of the damper are designed. Semi-active H∞ control laws based on full-state feedback and observers are proposed. A numerical simulation is made on the seismic responses of a six-story building frame structure with two MR dampers. The results show that the semi-active H∞ control using MR damper can reduce the structural seismic response efficiently and have good robustness.
引文
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[2]周云,徐龙河,李忠献.磁流变阻尼器半主动控制结构的地震反应分析[J].土木工程学报,2001,34(5):10-14.ZhouYun,XuLonghe,LiZhongxian.Seismic responses of semi-active control using magnetro-rheological fluid dampers[J].ChinaCivilEngineeringJournal,2001,34(5):10-14.
[3]BillieF,Spencer,GuangqingYang,J DavidCalson andMichaelK Sain.Smart damper for seismic protection of structures: a full-scale study[A].Proceeding of the2ndInternationalConference on structural control(2WCSC),1998.417-426.
[4]解学书,钟宜生,编著.H控制理论[M].北京:清华大学出版社,1994.JieXueshu,ZhongYisheng.Theory ofH control[M].Beijing:TsinghuaUniversityPress,1994.(inChinese)
[5]XieL,FuM and deSouzaC E.H control and quadratic stabilization systems with parameter uncertainty via output feedback[J].IEEE.Trans. onAutomatControl,1992,37:1253-1256.
[6]W E Schmitendorf,Jabbari andJ N Yang.Robust control technique for building under earthquake excitation[J].Earthquake engineering and structural dynamics,1994,23:539-552.
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