摘要
Lyapunov稳定性理论广泛应用于现代控制系统的分析与设计中.本文针对具有非线性特性和输入饱和约束的大型客机着陆模型,引入了组合非线性反馈控制算法.首先介绍了基于该算法的控制律设计原理与工程实用性;然后基于Lyapunov稳定性理论给出了该算法在吸引域内的稳定性条件;接着详细设计了Boeing747飞机自动着陆纵向控制律,设计中秉承"线性系统设计,非线性系统验证"的工程实践常用思路;最后,通过Matlab数值仿真以及Flight Gear视景仿真,验证了控制系统具有很好的鲁棒稳定性和精确跟踪能力.
Lyapunov stability theory is widely used in modern control system. We present in this paper a newly developed nonlinear control technique, i.e., the composite nonlinear feed-back （CNF） control, this algorithm’s stability has been proven through the Lyapunov stability theory. Both nonlinear and linear landing models of the Boeing747 huge airplane are proposed and a flight control law is designed using the method of CNF, during the designing process, the “linear system designing and nonlinear system validating” engineering practice has been adopted. Numerical simulations through Matlab and visual simulation through Flight Gear both show the design is successful.
出处
《工程数学学报》
CSCD
北大核心
2014年第6期816-828,共13页
Chinese Journal of Engineering Mathematics
基金
复杂环境下的无人机自主感知与控制技术研究(20115818017)~~
关键词
LYAPUNOV稳定性
饱和约束
大型客机
组合非线性反馈
Flight Gear
Lyapunov stability
saturation constraint
huge airplane
composite nonlinear feedback
Flight Gear
