地震激励下线性结构的滑动模态控制

Sliding Mode Control for Seismically Excited Linear Structures

滑动模态控制（ＳＭＣ）方法是最近提出的一种新的结构控制方法，该方法具有控制效果明显，鲁棒性好等优点。滑动模态控制方法中滑移面和控制律的确定是最为关键的两步，详细介绍应用ＬＱＲ方法确定滑移面的原理和步骤，并基于Ｌｙａｐｕｎｏｖ直接法提出了一种控制律。应用滑动模态控制（ＳＭＣ）方法和所提出的控制律，对一地震激励下的八层线性结构主动控制的算例进行了分析。分析表明，滑动模态控制方法是一种很有应用前景的结构振动控制策略。

Sliding mode control(SMC) method is used for application to seismically excited linear structures. Two key steps of SMC method are the design of sliding surface and the design of controller In the paper, the details of designing the sliding surface with LQR method are provided, and a new controller is proposed based on Lyapunov direct method. A comparison of the efficiency of the control between classical optimal control and the present method is made.Simulation results demonstrate that the SMC methods are viable and attractive control strategies for applications to seismically excited linear structures.