【摘要】 以改进以往控制算法中对加速度的控制为目的,克服某些算法控制下结构加速度反应增大的弊端,提出了转换开关控制算法,结合一座在底层安装一磁流变阻尼器的4层框架结构的算例,对在4种不同的地震波(El Centro波,Taft波,Kobe波,Cape波)作用下未加控制、Passive On、Passive Off、LQR、转换开关(On Off)控制状态下的结构反应进行了计算,并就结构顶点位移反应、加速度反应进行了减振率的对比分析,可看出该算法在位移控制方面与其他控制算法控制效果相近,但在加速度控制方面却优于其他算法.说明了转换开关控制算法的可行性及有效性.更多还原

【Abstract】 A semi-active control algorithm was presented in this paper to improve the control effect of acceleration.The control algorithm-LQR,PASSIVE-ON and PASSIVE-OFF were not effective in acceleration control.Sometimes the control algorithm will increase the response of acceleration.To prove the effect of this algorithm,the response of a four-story frame structure instructed with one MR damper at the bottom floor with the four control states under the four different earthquake acceleration excitations was analyzed.The four control states were free vibration,LQR control state,PASSIVE-ON control state,PASSIVE-OFF control state.The result showed that this algorithm was effective in structural acceleration control.更多还原