Abstract: Considering traditional reaching law of Sliding-Mode Control（SMC） method applied to the structure vibration control will produce high frequency chattering, and the control results of this method will depend on choice of the parameters. Using hyperbolic tangent function, the improved reaching law method is given. Improved method can eliminate high frequency chattering, reduce the complexity of parameter selection. Finally, By studying the Benchmark structure of a 3-story for numerical simulation analysis, the results show that this method has obvious inhibition effect on the seismic response of structure.

Key words: structural vibration, Benchmark model, earthquake response, sliding-mode control, reaching

摘要： 考虑传统滑模控制的趋近律方法应用于建筑结构振动控制中存在高频抖振，且控制效果过分依赖于参数的选取。利用双曲正切函数，设计了一种新的趋近律方法。新的方法能加快趋近速度，从理论上消除抖振，并有效减小趋近律设计过程中参数选取的复杂度。最后，以一个三层Benchmark结构模型为例进行了仿真数值分析，结果表明，该方法对结构的地震峰值响应抑制效果明显。

关键词: 结构振动, Benchmark模型, 地震反应, 滑模控制, 趋近律