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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。
In the course of transporting the cargo in the process of transporting the aircraft in a low-altitude airdrop, a large change in the longitudinal attitude of the aircraft will occur, seriously affecting the safety of the aircraft and the success of the airdrop. Aiming at the characteristics of multi-state aircraft system, LQR method is used to design the state feedback control law to control the elevator force and torque, to eliminate the disturbance caused by the cargo out of cabin, so as to ensure the stability of aircraft longitudinal attitude and enhance the safety of the aircraft during the airdrop Sex. The simulation results show that the control law can effectively ensure that the attitude of the aircraft remains in the balance state prior to the airdrop during the airdrop and has a good control effect.