利用遗传算法的磁流变阻尼器结构含时滞半主动控制  

Structural Semi-Active Control Based on Genetic Algorithm Using Magnetorheological Damper with Time Delay

作　　者：薛晓敏[1] 孙清[2] 张陵[1] 伍晓红[1] 

机构地区：[1]西安交通大学航天航空学院,西安710049 [2]西安交通大学土木工程系,西安710049

出　　处：《西安交通大学学报》2010年第9期122-127,共6页Journal of Xi'an Jiaotong University

基　　金：国家自然科学基金资助项目(10772141)

摘　　要：为解决磁流变阻尼器控制系统中普遍存在的时滞问题,提出一种基于遗传算法的磁流变阻尼器结构含时滞半主动控制策略.该策略以含时滞微分动力学方程为依据,采用先进的并行算法对结构控制力进行优化,然后将结果代入磁流变阻尼器的电流与阻尼力关系式中优化出相应的电流,最终将该电流施加给振动系统从而获得理想的控制效果.为了验证该策略的有效性,选用一个在底部安有磁流变阻尼器的3层平面框架为控制对象,通过该策略的优化过程得出了一系列仿真结果,证明该半主动控制策略控制效果明显.Referring to the time delay in magnetorheological（MR）damper control systems,an efficient structural semi-active control strategy based on genetic algorithm（GA）is proposed for controlling a time-delay system and regulating its behavior under different objectives.A mechanical model for the MR damper is constructed to deduce the relationship between damper force and applied current,and a novel control algorithm with GA is also proposed for mitigating the response of dynamical systems efficiently.A numerical example of a three-floor frame with damper is given to verify the feasibility and efficiency of the proposed strategy.

关 键 词：结构振动控制 磁流变阻尼器 时滞 遗传算法 多目标控制 

分 类 号：P315.966[天文地球—地震学]