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重物空投过程中,飞行器各飞行参数随着货物舱内移动发生连续的变化,当货物投放瞬间则发生突变。随着空投货物重量的增加,这一过程将严重恶化飞行器飞行品质和操控特性。本文在简化的空投飞行方程基础上,研究反演和切换控制方法以解决这一过程中的飞行状态保持和扰动抑制(包括大范围飞行状态,飞行员操纵误差和系统量测延迟等)问题,所得控制策略也可用于驾驶员空投操纵的指令参考。利用反演理论,推导了自适应控制器以稳定运输机飞行状态,并提出了协调的切换控制方法解决飞机在货物离机过程中出现的状态跳变问题。仿真结果表明所提控制方法在不仅能有效保持系统状态,并能在较大飞行范围内具有较好的鲁棒性。
During the heavy object airdrop, the flight parameters of the aircraft change continuously with the movement of the cargo compartment, and when the goods are put into operation, a sudden change occurs. As the weight of airdrop cargo increases, this process will seriously degrade the aircraft’s flight quality and handling characteristics. In this paper, based on a simplified airborne flight equation, the inversion and handoff control methods are studied to solve the problem of flight state maintenance and disturbance rejection (including large-scale flight conditions, pilot error and system measurement delay) Control strategies can also be used as a reference for driver pilot override commands. Using the inversion theory, the adaptive controller is deduced to stabilize the flight status of the transport aircraft. A coordinated handover control method is proposed to solve the problem of state transition during the departure of cargoes. The simulation results show that the proposed control method not only can effectively maintain the system state, but also has good robustness in the large flight range.