【作者】 姜南； 李忠献；

【Author】 Jiang Nan,Li Zhongxian (1.Institute of Aeronautics and Astronautics,Tianjin University,Tianjin 300072,China; 2.School of Civil Engineering,Tianjin University,Tianjin 300072,China)

【机构】 天津大学航空航天研究院； 天津大学建筑工程学院；

【摘要】 本文采用两种被动和三种半主动控制方法对底部三层通过MR阻尼器相连的1/3比例的三层和五层相邻结构钢框架模型进行了不同地震激励作用下的振动试验研究。试验结果表明,MR阻尼器是一种有效的半主动控制装置,配以控制算法形成的控制系统可以对相邻结构实施有效的控制;基于加速度反馈的控制方法可以适用于多种具有反馈增益矩阵的闭环控制算法,该方法可以大大减少试验中加速度传感器的数量,降低控制系统的硬件成本,增加半主动控制系统在中的可能性和可行性。更多还原

【Abstract】 The shaking table tests of one-third scale three-storey and five-storey steel frame model adjacent structures installed magnetorheological(MR) dampers under different earthquake excitations were carried out.In the tests two passive controls and three semi-active controls were performed.The results show that the MR damper is an effective semi-active device and the control system with MR dampers and control strategies has good control effect on adjacent structures.The results also show that the acceleration feedback method is applicable to those control strategies with closed-loop gain matrix.Using this way can reduce the number of acceleration sensor and the hardware cost.So it can increase the possibility and feasibility of using the semi-acitve control system in practical engineering applications.更多还原