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采用离散系统建模技术和变结构控制系统设计的离散趋近律方法 ,对地震作用下建筑结构的振动控制问题进行了研究 ,给出了系统切换函数的确定方法 ,推导了系统控制律的表示式。算例分析结果表明 ,该控制方法能有效地减小结构的地震响应 ,对于结构抗震控制易于接受的特定采样时间间隔 ,控制效果优于相应基于连续时间系统的变结构控制方法
The discrete system modeling technique and the discrete approach law of variable structure control system are used to study the vibration control of building structures under earthquake. The method to determine the switching function of the system is given and the system control law is derived formula. The results of numerical examples show that the proposed control method can effectively reduce the seismic response of the structure. The control effect is better than the corresponding variable structure control method based on the continuous-time system for the specific sampling time interval that the structure’s seismic control is easy to accept