摘要
本文对一个带有磁流变阻尼器的二自由度弹簧阻尼系统的基础激励响应进行了主动控制数值仿真。使用改进的P-模型模拟磁流变阻尼器的力学性能,应用H2/LQG方法设计了状态反馈增益矩阵,选用Clipped-Op-timal控制律完成磁流变阻尼器控制电流的确定。仿真结果表明受控系统的响应水平显著小于无控系统,改进的P-模型运作良好,可以在数值仿真过程中代替真实磁流变阻尼器的工作。
A study on active control of structure using magnetorheological （MR） damper was presented. A numerical simulation was carried out for a two freedom degree system and the real damper was replaced by an improved phenomenological model of MR dampers. To achieve the control objective the controller was developed by H2/LQG method and limited by clipped-optimal control. The time history of the controlled current, the damping force of MR damper and the relative displacement were presented in the paper which indicated that the vibration of the structure was suppressed in controlled system and the improved phenomenological model can take the place of real MR damper in numerical simulation.
出处
《力学季刊》
CSCD
北大核心
2008年第2期194-198,共5页
Chinese Quarterly of Mechanics
基金
航空科学基金(04A52005)
关键词
磁流变阻尼器
改进模型
主动控制
magnetorheological damper
improved model
active control
