基于磁流变阻尼器的多种控制组合振动台研究

Experimental Research of Shaking Table with Various Control Combinations Based on Magnetorheological Dampers

用带有DR—1005—3型磁流变阻尼器、调谐质量阻尼器及橡胶隔震垫的三层框架模型结构进行了减震控制实验。依据LQG控制算法得到最优控制。在Simulink环境下编制实时控制软件,对阻尼器进行出力控制。分别进行只带磁流变阻尼器、调谐质量阻尼器以及橡胶隔震垫子系统和各个子系统组合的七种振动台实验。试验结果表明:基于MR阻尼器的控制系统是有效的,可以显著降低模型结构的加速度响应。将磁流变阻尼器与调谐质量阻尼器和橡胶隔震垫进行组合使用可以得到更好的控制效果。

The damping control experiments of a three-layer framework structure, which contains DR-1005- 3 magnetorheological dampers, tuned mass dampers and rubber isolation pads, were studied. Optimal control was obtained by adopting the LQG control algorithm. The output control of dampers was studied based on the real-time control software Simulink seven kinds of shaking table tests, i.e. the shaking table with magnetorheological damp- ers, the shaking table with tuned mass dampers, the shaking table with rubber isolation pads and the shaking table with the combinations of each subsystem, were carried out. The experimental results show that the control system based on the MR dampers is effective. The system can significantly reduce the acceleration response of the struc- ture. And the combination of magnetorheological dampers, tuned mass dampers and rubber isolation pads has a bet- ter control effect and performance.