论文部分内容阅读
针对常规动态逆控制对系统不确定性较为敏感的缺点,提出一种扩展L_1自适应控制方法,用于战斗机大迎角非线性控制.采用时标分离原理将控制系统分为内外两个回路,分别设计动态逆控制器作为基本控制器,用于角速率和角度的跟踪控制.设计L_1自适应控制器作为扩展控制器,用于抵消系统中的不确定性.分别在标称和加入参数摄动的情况下进行仿真验证与对比,仿真结果表明所提出的控制方法能够有效抵消系统中的不确定性,提高控制效果.
Aiming at the shortcomings that the conventional dynamic inverse control is more sensitive to system uncertainty, an extended L_1 adaptive control method is proposed for non-linear control of fighter aircraft at high angles of attack. The control system is divided into two loops, inner and outer loop, The dynamic inverse controller is designed as the basic controller for the tracking control of angular velocity and angle.The L_1 adaptive controller is designed as an extended controller to counteract the uncertainty in the system.At the same time, Simulation results show that the proposed control method can effectively offset the uncertainty in the system and improve the control effect.