自适应桁架结构局部积分力反馈振动阻尼控制研究

本文主要研究自适应桁架结构的振动控制理论和方法，将结构中主动构件的局部弹性内力经过积分和比例反馈控制器运算后，得到主动构件的输出控制力，以实现结构的振动阻尼控制。文中还引入模态应变能因子的概念，建立了主动构件配置的多目标优化函数，以研究其优化配置问题。通过一平面自适应桁架结构的优化配置计算和数值仿真，说明了文中所述控制方法的有效性。

Active Damping Control of Adaptive Truss Structures by Local Integrate Force Feedback

The objective of this paper is to study the method and effectiveness of using active members to realize active damping control of adaptive truss structures. The axial elastic internal force of active member elements is measured by the load cell in series with the active members, then, the active members are controlled in a decentralized manner with a integrate and proportional force feedback,to realize a change in modal frequencies and modal damping of the structure. The determination of active member locations is very important to effectively realize structural vibration control. In order to find the optimal placement of the active member in adaptive truss structure, a optimization criterion based on modal strain energy factor is also developed in this paper. A planar adaptive truss structure is employed as an example to demonstrate the effect of the presented approach in structural active vibration control.