基于LQR的磁流变阻尼器的离散半主动控制

冉成崧;徐赵东

振动与冲击 ›› 2009, Vol. 28 ›› Issue (8) : 103-105.

PDF(1982 KB)
PDF(1982 KB)
振动与冲击 ›› 2009, Vol. 28 ›› Issue (8) : 103-105.
论文

基于LQR的磁流变阻尼器的离散半主动控制

  • 冉成崧,徐赵东
作者信息 +

Discrete Semi-active Magetorheological Damper Control Based on LQR

  • Ran Chengsong,Xu Zhaodong
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文章历史 +

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。本文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。

Abstract

The usual semi-active control algorithms are determining the optimal control force based on structure feedbacks of displacement and velocity responses. But in actually, these strategies lead to negative affect to controlling effect, because of difficulties of measurement of displacement and velocity responses, data transmission and line layment. This paper puts forward a new discrete control algorithm based on inter-storey displacement and inter-storey velocity responses. The inter-storey displacement could be measured precisely by displacement meter attached to magnetorheological damper, while the inter-storey velocity could be obtained by differential inter-storey displacement, then the control force of the damper in this storey could be determined independently. The results of the numerical analysis illustrate that the proposed control algorithm have good damping effects in the earthquake.

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

Key words

magnetorheological damper / inter-storey displacement / inter-storey velocity / discrete semi-active control algorithm

引用本文

导出引用
冉成崧;徐赵东. 基于LQR的磁流变阻尼器的离散半主动控制[J]. 振动与冲击, 2009, 28(8): 103-105
Ran Chengsong;Xu Zhaodong. Discrete Semi-active Magetorheological Damper Control Based on LQR[J]. Journal of Vibration and Shock, 2009, 28(8): 103-105
中图分类号: TU352.1   

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