基于LMI对角占优补偿的航空发动机QFT控制  

QFT control of aeroengine through LMI-based diagonal dominance pre-compensation

作　　者：李华聪[1] 韩小宝[1] 吴志琨[1] 

机构地区：[1]西北工业大学动力与能源学院,西安710072

出　　处：《航空动力学报》2007年第9期1583-1587,共5页Journal of Aerospace Power

摘　　要：针对航空发动机数学模型的不确定性,提出一种基于线性矩阵不等式(LMI)和定量反馈理论(QFT)的航空发动机鲁棒控制器的新的设计方法.该方法把频域对角占优预补偿器的设计问题与线性矩阵不等式的求解方法相结合,实现了对不确定控制对象的解耦,引入定量反馈理论进行鲁棒控制器设计.仿真验证表明该方法控制效果良好,并具有较强的工程应用价值.Based on linear matrix inequalities （LMI） and quantitative feedback theory （QFT）, a new design method of aeroengine robust controller was developed for uncertain mathematical model of aeroengine. The method has combined the design problem of frequen- cy domain diagonal dominance pre-compensator and the solving process of LMI, thus achieving the decoupling of uncertain control objects. Moreover,a robust controller was designed with induction of QFT. The simulation results show that this method has good control efficiency and engineering applicability.

关 键 词：航空、航天推进系统 线性矩阵不等式(LMI) 解耦 定量反馈理论(QFT) 

分 类 号：V233.7[航空宇航科学与技术—航空宇航推进理论与工程]