摘要
运输机超低空空投过程中货物出舱会使飞机纵向姿态发生较大变化,严重影响飞机的安全性及空投的成功性。针对飞机为多状态系统的特点,采用LQR方法设计了状态反馈控制律,控制升降舵产生力与力矩,消除由于货物出舱引起的扰动,从而保证飞机纵向姿态的稳定性,提高空投过程飞机的安全性。仿真结果表明,该控制律能够有效地保证空投过程中飞机姿态保持在空投之前的平衡状态,具有良好的控制效果。
The longitudinal attitude of transport aircraft would be changed by cargo extraction during airdrop at super-low-altitude,which will affect the aircraft safety and success of airdrop. According to the feature of multi-state system of the aircraft,the state-feedback control law has been designed by LQR method to control the elevator to produce force and moment,thus eliminating the disturbance of cargo extraction so as to ensure the aircraft＇s longitudinal stability and improve the safety of airdrop. The simulation result shows that the designed control law is effective to keep the aircraft pre-airdrop attitude during airdrop.
出处
《飞行力学》
CSCD
北大核心
2013年第6期504-507,共4页
Flight Dynamics
基金
航空科学基金资助(2010ZC03007)
关键词
空投
LQR
仿真
airdrop
LQR
simulation
