基于LQR的磁流变阻尼器的离散半主动控制
|
摘要
目前的结构半主动控制多以位移和速度作为状态反馈参数,从而得到结构的最优控制力,这样造成了测量困难、数据传输困难和布线复杂等问题,严重影响了实际工程中的应用。提出了基于结构层间相对位移和相对速度的离散控制算法,此算法通过附加于磁流变阻尼器上的位移计测量得到相对位移,进而微分得到相对速度,并用此数据独立确定本楼层的最优控制力。数值算例表明本文提出的算法对结构有较好的减震效果,具有较高的工程应用价值。
A new discrete control algorithm was put forward based on inter-storey displacement and inter-storey velocity responses in order to overcome the difficulties in response measurement, data transmission and line layout and to improve the effect of semi-active magnetorheological damper control. The inter-storey displacement was measured precisely by use of displacement meter attached to magnetorheological damper, and the inter-storey velocity was obtained by differentiating inter-storey displacement. Then the control force of the damper in the storey can be determined independently. The numerical analysis results of an example illustrate that the proposed control strategy is of good effect on reduction of earthquake responses.
A new discrete control algorithm was put forward based on inter-storey displacement and inter-storey velocity responses in order to overcome the difficulties in response measurement, data transmission and line layout and to improve the effect of semi-active magnetorheological damper control. The inter-storey displacement was measured precisely by use of displacement meter attached to magnetorheological damper, and the inter-storey velocity was obtained by differentiating inter-storey displacement. Then the control force of the damper in the storey can be determined independently. The numerical analysis results of an example illustrate that the proposed control strategy is of good effect on reduction of earthquake responses.
引文
[1]Spencer B F,Dyke S J.Phenomenological model of a magne-torhological damper[J].Journal of Engineering Mechanic,1996,122(7):230-238.
[2]徐龙河,周云.半主动磁流变阻尼控制方法的比较与分析[J].世界地震工程,2000,16(3):95-100.
[3]Dyke S J,Spencer B F.Semi-active control strategies for theMR dampers:comparative study[J].Journal of EngineeringMechanics,2000,126(8):795-803.
[4]Jansen L M,Dyke S J.Semi-active control strategise for MRDampers;a comparatived study[J].Journal of EngineeringMechanics,2000,126(8):795-803.
[5]隋莉莉,王刚,欧进萍.基于加速度反馈的结构地震反应半主动MR阻尼控制试验[J].地震工程与工程振动,2002,22(6):3-5.
[6]沙凌峰.磁流变阻尼器性能试验及其对建筑结构的减震研究[D].南京:东南大学,2008.
[7]王正林,王胜开,陈国顺.Matlab/Simulink与控系统仿真[M].北京:电子工业出版社,2005.
[2]徐龙河,周云.半主动磁流变阻尼控制方法的比较与分析[J].世界地震工程,2000,16(3):95-100.
[3]Dyke S J,Spencer B F.Semi-active control strategies for theMR dampers:comparative study[J].Journal of EngineeringMechanics,2000,126(8):795-803.
[4]Jansen L M,Dyke S J.Semi-active control strategise for MRDampers;a comparatived study[J].Journal of EngineeringMechanics,2000,126(8):795-803.
[5]隋莉莉,王刚,欧进萍.基于加速度反馈的结构地震反应半主动MR阻尼控制试验[J].地震工程与工程振动,2002,22(6):3-5.
[6]沙凌峰.磁流变阻尼器性能试验及其对建筑结构的减震研究[D].南京:东南大学,2008.
[7]王正林,王胜开,陈国顺.Matlab/Simulink与控系统仿真[M].北京:电子工业出版社,2005.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心