【摘要】 利用滑动模态控制方法对建筑结构进行振动控制 ,给出了基于指数趋近形式的控制律方法 .当最大控制力受限时 ,给出了饱和滑模的控制方法和切换函数的确定方法 .对以下 2种情况进行了研究 :一种是 ,结构每一层都安装有传感器的全状态输出反馈滑模控制 ;另一种则是 ,只在结构重要位置上安装有传感器 ,并只利用此有限数量的传感器输出进行控制的有限状态输出滑模控制 .算例结果表明 ,所提出的滑模控制方法能有效减小结构地震峰值响应 ,效果优于经典的LQR方法 ,而且具有对结构参数变化的鲁棒性 ,在土木工程结构振动控制中具有广阔的应用前景 .更多还原

【Abstract】 An exponential approach for sliding mode control is presented. A saturated controller is used limiting the maximum control forces. Methods for determining switching functions are also presented. The full state and static output feedbacd conditions are investigated. Numerical simulation is made to test the performance and robustness of the sliding mode control method, where application is made to the static output controller. Control effectiveness of actuator saturation is demonstrated by numerical simulatoin. Peak response is shown to be reduced under the same constraints as those on the classical LQR case. The proposed control strategies can be applied to seismically excited building structures.更多还原