【摘要】 现代控制理论在工程结构振动领域中的应用性不强,主要是因为其考虑的实际约束条件太少,就该问题进行了研究。首先根据建筑结构力学原理,建立了包含控制输入滞后、执行器故障、参数不确定等的结构系统状态模型。然后基于状态反馈和线性矩阵不等式处理方法给出了一个可满足多约束条件的时滞依赖型鲁棒H∞容错主动控制算法。通过对一个四自由度建筑结构模型在EI Centro地震波作用下振动的主动控制仿真,验证了该方法的可行性,可用于工程结构的振动控制。更多还原

【Abstract】 Application of modern control theory in field of engineering structure vibration is not strong mainly because few considerations of actual constraints are taken.According to structural dynamics theory,a state-space model containing input time-varying delay,actuator failure,parameter uncertain,etc.was established.The model parameters were appropriately dealt with to lower the conservation.A robust H∞ reliable active control algorithm for multi-constraint was also proposed based on both state feedback and LMI approaches.Finally,a building model with four degrees of freedom subjected to EI Centro earthquake wave was simulated and studied utilizing the algorithm,and the results showed that the proposed method is feasible and thus can be used to control vibration of engineering structures.更多还原