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中文摘要：
采用将电压切换时间作为可变参数的基于位移延时反馈的改进Bang—Bang控制算法，利用dSPACE、MATLAB／Simulink、MR阻尼器和电流放大器等工具，建立了拉索-MR阻尼器系统的半主动控制试验平台。利用该试验平台对拉索系统进行了半主动控制试验，研究了MR阻尼器的输入电压及切换时间等参数对拉索减振效果的影响。结果表明：对于拉索的前3阶模态振动，半主动控制时系统的等效模态阻尼比比相应的优化电压下的被动控制有不同程度的大幅提高；电压的切换时间显著地影响MR阻尼器对拉索的减振效果。
英文摘要：
A semi-active improved Bang-Bang control algorithm for closed-loop cable vibration control with magneto-rheological （ MR ） dampers was applied based on measurement displacement, and the switch time of input voltage was involved as variable parameters. An experimental platform of cable-MR damper system based on dSPACE, MATLAB/Simulink and MR dampers was established. The semi-active control experiment of cable-MR damper system by using the platform was done. Influences of input voltage, switch time, etc. of MR damper on effect of cable vibration control were studied. The results show that the equivalent modal damping ratios of system obtained from semi-active control are larger than those obtained from passive control for the first three modes. The switch time of input voltage significantly influences the effect of cable vibration control for MR dampers.
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