飞机突防飞行非线性解耦控制系统的混合仿真研究

飞机低空突防作地形跟踪／回避飞行时，会出现纵向和横向运动的非线性交叉耦合，利用非疆性逆系统理论和现代最优控制理论可以设计一个飞行控制规律来解开这些耦合，主要讨论了这种线性解耦控制系统的混合仿真，给了用于仿真的数学模型以及仿真方法，对系统有无大气紊流扰动的解耦控制、系统对指令输入的跟踪、飞行品质等方面进行了探讨。结果表明，该控制规律在有无大气紊流影响时都能实现解耦，准确地跟踪期望的三维突防航迹，并具

A HYBRID SIMULATION STUDY OF NONLINEAR DECOUPLING CONTROL SYSTEM FOR AIRCRAFT PENETRATION

While an aircraft penetrates at low level by using TF/TA technologies.there appears tohave some nonlinear cross couple between longtudinal and lateral movement.A flight controllaw by combining the nonlinear inverse dynamics theory and the modern optimal control theory can be founded to decouple the coupling motion. This paper mainly deals with the hybridsimulation of this nonlinear decoupling control system. A mathematical model for simulationand the simulation mathod are provided. Some researching results in system's decouplingcontrol of the aircraft flying in atmosphere with and without turbulent disturbance: insystem's capturing the command input and in aircraft flying qualities are presented. The simulation results illustrate that the system can accurately capture the desired three demensionalpenetration trajectary by decoupling control laws and it offers better dynamic characteristicsand flying qualities of the aircraft even encountering the atmosphere disturbance.