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.
出处
《振动与冲击》
EI
CSCD
北大核心
2009年第8期103-105,共3页
Journal of Vibration and Shock
基金
国家高科技研究发展计划(863计划)资助项目(2009AA03z106)
教育部新世纪优秀人才支持计划(NCET-06-0472)
江苏省333人才支持计划
关键词
磁流变阻尼器
层间位移
层间速度
离散半主动控制算法
magnetorheological damper
inter-storey displacement
inter-storey velocity
discrete semi-active control algorithm
