Abstract: To a class of structured perturbation plants about which state and output matrixes are uncertain,a sufficient and necessary condition is presented to the quadratic stability via H ∞ dynamic output feedback controller.To make the system be of the quadratic stability and satisfy quadratic performance,a controller is designed later.The simulation shows that the control system designed is of good stable robustness and dynamic performance.

Key words: Aircraft engine;System stability;Closed loop control;H_∞ control +;Structure parameter;Perturbation

摘要： 对于一类输出矩阵存在结构参数摄动的对象， 提出了闭环系统满足二次稳定性的Ｈ∞输出动态反馈控制器的理论设计方法。随后进行了同时满足二次稳定及干扰抑制性能指标的Ｈ∞控制器设计， 最后的仿真结果表明所设计的控制系统具有较好的稳定鲁棒性及动态性能

关键词: 航空发动机;系统稳定性;闭环控制;H_∞控制;结构参数;摄动