实用航空发动机LQR权阵选取方法  

Choosing Method for Aeroengine LQR Weighting

作　　者：杨刚[1] 姚华[1] 

机构地区：[1]中国航空工业第一集团公司动力控制系统研究所,无锡214063

出　　处：《南京航空航天大学学报》2006年第4期403-407,共5页Journal of Nanjing University of Aeronautics & Astronautics

基　　金：江苏省博士后科研基金资助项目

摘　　要：为了简化航空发动机LQR方法权阵的选取,基于优化理论提出了一种新的目标函数选取方法。该目标函数同时反映控制性能与控制能量的影响,因此,通过优化该目标函数得到的权阵设计出的LQR控制器不仅性能优良,还能保证控制能量在可接受的范围内。此外,该目标函数中包含且只包含了一个可调参数,可简化控制器参数调节过程,使设计者能轻松地在控制性能与控制能量间找到合理的折中。线性仿真、非线性仿真及半物理仿真试验均验证了按此方法设计的控制器的性能。To simplify the work of choosing aeroengine LQR weighting, an optimization Daseo the method is proposed. A new target function that can reflect both the control performance and the control effort is proposed. By optimizing this target function,a pair of optimal LQR weighting is found. The LQR controller corresponding to these weightings can＇t meet performance requirements of the control system, but can confine control efforts in an acceptable scale as well. Furthermore, the target function contains and only contains one tuning parameter. The property simplifies the parameter choosing procedure and help the designers to find a good compromise between the control performance and the control effort. Finally, linear, nonlinear and semi-physical simulations prove that the controller has good performance.

关 键 词：航空发动机 LQR方法 优化 目标函数 半物理仿真试验 

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]