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飞机进场着陆是飞机飞行的关键阶段,由于飞机和外界条件存在许多不确定因素,对飞机着陆精度和安全性有很大影响。QFT是在相频平面上的一种图形化的鲁棒控制系统设计方法。采用QFT理论设计了某型飞机的纵向着陆控制律,并应用了推力综合控制稳定飞机下滑时的速度。仿真结果显示,飞机着陆实现了对期望着陆轨迹的精确跟踪,满足了着陆控制的要求。
Plane approach landing is a critical phase of aircraft flight, due to the aircraft and the external conditions there are many uncertainties, the aircraft landing accuracy and safety have a great impact. QFT is a graphical robust control system design method in the phase-frequency plane. Longitudinal landing control law of a certain type of aircraft is designed by using QFT theory, and thrust comprehensive control is applied to stabilize the speed of the aircraft when it slips. The simulation results show that the landing of the aircraft can accurately track the expected landing trajectory and meet the requirements of landing control.