【摘要】 对一带有SG-MRD40磁流变阻尼器的3层钢框架模型结构进行了结构减震控制模拟试验,基于Matlab/Simulink及WinCon编制实时控制软件,将依据LQG控制算法的最优控制,通过Q8系列HIL控制卡输出通道驱动继电器开关,将所需电压施加到阻尼器上,在振动台上进行了0~40 Hz正弦扫频及前3阶自振频率的正弦波下LQG半主动控制系统的试验.试验结果表明,通过Matlab/Simulink调用WinCon实时控制软件进行半主动控制是有效的,半主动控制系统能够使模型结构的地震响应得到显著的降低,其中顶层位移响应和绝对加速度响应的峰值减小了近40%左右,而所需电源功率只有10 W左右.更多还原

【Abstract】 Vibration control model tests on a three-story steel frame structure with an SG-MRD40 magneto-rheological(MR) damper were carried out.The real-time control software was compiled based on Matlab/Simulink and WinCon.The optimal control forces were determined based on the LQG algorithm,and the required voltages were applied to the MR damper using the output channel driving relay switches with Q8 series HIL control cards.Model tests on LQG semi-active control systems under the action of sine waves with frequencies from zero to 40 Hz and with first to third order intrinsic frequencies were performed on the vibration table.The test results indicate that the semi-active control is effective using Matlab/Simulink to call the WinCon real-time control software,and the seismic responses can be significantly reduced by the semi-active control system.The peak values of the displacement and acceleration responses at the top floor of the frame structure are reduced by about 40%,while the required electric power is only about 10 W.更多还原