AVS结构控制体系的振动全过程分析
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摘要
在主动变刚度(AVS)控制器开启和闭合瞬时,通过分析其体系的能量分布或动量分布变化,探讨在AVS结构控制体系变结构瞬时,体系运动状态迁移的条件及运动方程,以实现体系振动的全过程分析.分析体系运动的稳定性及体系的减振机理,探讨在AVS控制器开启导致的体系内激励同AVS控制器开启和闭合策略之间的共同作用,以避免AVS控制器开启后体系短时间内陷于状态切换面作延伸运动,提高体系运动的鲁棒性和AVS控制子系统的减振效率.
By analyzing the change of energy distribution or momentum distribution in the moment of closing or opening the active variable stiffness(AVS) controller,the transferring conditions of movement state and the motion equations of structural control system is studied,so as to achieve the analysis of the whole vibration process of the system,to discuss the stability of the movement and the mechanism of vibration reduction of the system.The interaction between the inner excitation due to the opening of AVS controller and the rule of opening-closing of AVS controller is investigated,which can avoid the stretching movement in switching surface of the system in the short time after the opening of AVS controller,to enhance robustness of the structural control system,and to increase the efficiency of vibration reduction of AVS control subsystem.
By analyzing the change of energy distribution or momentum distribution in the moment of closing or opening the active variable stiffness(AVS) controller,the transferring conditions of movement state and the motion equations of structural control system is studied,so as to achieve the analysis of the whole vibration process of the system,to discuss the stability of the movement and the mechanism of vibration reduction of the system.The interaction between the inner excitation due to the opening of AVS controller and the rule of opening-closing of AVS controller is investigated,which can avoid the stretching movement in switching surface of the system in the short time after the opening of AVS controller,to enhance robustness of the structural control system,and to increase the efficiency of vibration reduction of AVS control subsystem.
引文
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[2]HOUSER G W,BERGMAN L A,CAUGHEY T K,et al.Structural control:Past present and future[J].Journal ofEngineering Mechanics,1997,123(9):897-971
[3]白荣林,杨润林,杜建霞,等.结构变刚度/变阻尼控制若干问题的研究[J].建筑科学,2009,25(7):46-51.
[4]阎维明,谭平.多自由度主动变刚度控制体系的振型控制[J].地震工程与工程振动,1999,19(1):120-126.
[5]李静斌,赵林,张猛.主动变刚度阻尼多阵型半主动控制研究[J].世界地震工程,2006,22(3):105-110.
[6]何玉敖,冯德平.主动变刚度结构体系(AVS)多模态优化控制研究[J].建筑结构学报,2000,21(3):53-59.
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