基于Benchmark模型主动控制系统鲁棒H_∞控制  

Robust H-infinity Control of the Active Control System Based on Benchmark Model

作　　者：李森萍 

机构地区：[1]广东碧桂园职业学院建筑专业群教研室,广东清远511510

出　　处：《宜春学院学报》2016年第6期49-53,共5页Journal of Yichun University

摘　　要：基于模态降阶处理后的第三阶段Benchmark中的三层钢结构模型,在MATLAB中编制鲁棒H_∞控制器程序以及建立Simulink模块,考虑结构层间位移、绝对加速度和控制力控制指标,与LQG控制方式对比,对鲁棒H_∞控制器在模型不确定性方面的鲁棒性进行仿真分析。结果表明:当结构模型参数的偏差较小(±15%)时,基于鲁棒H_∞控制和LQG控制方法设计的主动控制系统,都能取得较好的控制效果;当结构模型参数的偏差较大时(±30%)时,基于LQG控制方法设计的主动控制系统的控制效果明显变差,而基于鲁棒H_∞控制方法设计的主动控制系统的控制效果比较理想,鲁棒H_∞控制方法在模型不确定方面具备较好的鲁棒性。The robust H- infinity control program and Simulink module are established by MATLAB software in this paper on the basis of the three layers steel structure model after mode reduction from the third stage Benchmark problem. This paper,comparing with LQG control method,indudes a stimulated analysis on model uncertainty of H- infinity control method with control indices of structure inter- layer displacement,absolute acceleration and control force considered. The robustness on model uncertainty is simulated between LQG control method and H- infinity control method. The result shows that when the structural model parameters＇ deviation is small（ the deviation is in the range of ± 15%）,the active control system,based on LQG control method or H- infinity control method,can achieve good control effect. When the structural model parameters＇ deviation is large（ the deviation is in the range of ± 30%）,the control effect active control system,which is based on LQG control method,becomes obvious bad,while the control effect of active control system based on H- infinity control method is ideal. The result shows the active control system＇s robustness on model uncertainty based on H- infinity control method is good.

关 键 词：BENCHMARK模型 鲁棒H∞控制器 鲁棒性 控制指标 模型参数 

分 类 号：TU311.3[建筑科学—结构工程]