无人作战飞机自主攻击非线性控制器设计  

Design of a Nonlinear Flight Controller for UCAV's Autonomous Attacking

作　　者：刘鹤鸣[1] 徐国强[1] 黄长强[2] 丁达理[2] 孙振东[3] 

机构地区：[1]空军第一航空学院 [2]空军工程大学航空航天工程学院 [3]中国人民解放军94565部队机务大队

出　　处：《电光与控制》2014年第6期81-85,共5页Electronics Optics & Control

基　　金：航空科学基金(20105196016);研究生科技创新计划(DX20100108)

摘　　要：针对无人作战飞机自主攻击过程高精度、大迎角以及飞行状态快速变化等飞行控制需求,采用反步控制设计非线性控制器。依据飞行器六自由度方程建立非线性控制模型,利用奇异摄动原理将速度控制器和姿态控制器设计分离开,分别利用反步控制原理设计控制器,采用一阶指令滤波器克服传统反步法带来的"微分爆炸"问题,最后依据Lyapunov稳定原理证明了控制系统跟踪误差渐近趋近于零。仿真结果表明,非线性控制器在输入参考信号发生剧烈变化时仍能够实现高精度跟踪控制。Considering that the flight control of unmanned combat aerial vehicle （ UCAV ） is required to have high accuracy,high attacking angle and rapid change of flight state during UCAV＇s autonomous attacking,we designed a nonlinear backstepping flight controller .Firstly,we established a nonlinear flight model based on six degree-of-freedom aircraft equation .Then,we separated the speed controller design from the attitude controller design based on singular perturbation theory and backstepping control .The problem of‘differential explosion ’ in traditional backstepping was overcome by using simple first order command filter . The tracking error of the controller was proved to converge exponentially to zero according to Lyapunov stability theory .The simulation result proves that the nonlinear controller can track the input reference signal with high accuracy even when it changes dramatically .

关 键 词：无人作战飞机 轨迹跟踪控制 反步飞行控制 自主攻击 

分 类 号：V249.1[航空宇航科学与技术—飞行器设计] V279