总能量控制原理在地形跟随飞行控制中的应用

应用总能量控制原理设计了控制飞行高度的地形跟随飞行控制系统,并通过引入飞行高度和飞行速度的偏差控制,基本消除了总能量控制系统存在的稳态误差;引入俯仰角和俯仰角速率反馈回路以增加阻尼,消除俯仰角振荡,最后对该系统进行了解耦性能和地形跟随仿真。结果表明,用总能量原理设计的地形跟随飞行控制系统体现了飞机升降舵和油门杆一体化设计的思想,可实现飞行速度/航迹角的解耦控制,对给定地形可达到良好的跟随效果。

Application of Total Energy Control Principle to Terrain Following System

Total energy control principle is used to design a terrain following(TF) flight control system of controlling the flight altitude.An error control method was adopted to eliminate the stable error of airspeed and altitude when decoupling control through total energy control principle.Pitch loop and pitch rate feedback loop are designed for the system to damp the oscillatory response produced by the TF system.Simulation results of the system are given. Results show that the TF flight control system can decouple flight velocity and flight path angle,and exactly follow the planned flight path.