Abstract: According to the shortage of H ∞ controllers in time-domain performance, mixed H 2/H ∞ control problem was investigated For a species of systems with structured perturbations, the sufficient and necessary condition that there were mixed H 2/H ∞ controllers and the method to design a controller were presented The simulation results for a certain double spool turbojet aero-engine reveals that the robust control with no static error for both rotational velocity of low-pressure rotor and temperature at low-pressure turbine outlet in the same time can be realized And the dynamic performance character of closed loop system is also improved evidently

Key words: Aircraft engine;Control system;Feedback control;Matrix algorihm

摘要： 针对H∞ 控制器在时域性能方面的不足 ,研究了混合H2 /H∞ 控制问题 ,给出了一类结构摄动系统混合H2 /H∞ 控制器存在的充要条件和控制器的设计方法。对某双转子涡喷发动机的仿真结果表明 ,可以对低压转子转速和低压涡轮后温度同时实现无静差鲁棒控制 ,并使闭环系统的动态性能品质获得明显改善

关键词: 航空发动机;控制系统;反馈控制;矩阵算法