具有地震抑制功能的结构主动控制算法与仿真分析

Algorithm and simulation for structural active control with function of attenuating earthquake

提出了一种具有地震抑制功能的结构抗震主动控制算法。其特点是设计一组状态反馈控制律,使得闭环结构系统在具有希望极点的同时,还能够减小结构地震输入的影响。首先,在特征结构配置参数化方法的基础上,将该控制问题转化为一个含有约束条件的优化问题;其次,给出了求解该问题的算法及实施步骤,该方法直接基于结构系统原始矩阵,不涉及系统的增广或变换,便于工程应用;最后,对地震作用下三层剪切型Benchmark结构模型进行了仿真分析,结果表明本文所提具有地震干扰抑制功能算法的有效性。

A structural active control method with attenuating earthquake is proposed. Its aim is to design a state feedback controller, such that the closed-loop structural system has desired eigenvalues and the disturbance vectors decouple from the output vectors, which can minimize the influence of earthquake inputs. Firstly, based on a result of parametric eigenstructure assignment, the considered problem is changed into an optimization problem with some constraints. Secondly, the corresponding algorithm and the detail steps to solve this problem are developed. This method utilizes directly the original matrices in structure systems, and thus it is convenient for applications. Final- ly, a shear type of three-story benchmark structure under earthquake excitation is analyzed by using the proposed algorithm ,and the simulation results show the effect of the proposed algorithm.