Robust Aircraft Flight Control in Conditions of Disturbances

Abstract

. The landing phase during the flight is probably the most dangerous part, since most accidents occur at this stage. To reduce the influence of low-altitude wind shear on the longitudinal movement of the aircraft in the glide path landing mode (task), robust H – control is proposed. Dynamic models of the aircraft and wind shear are constructed. H2 and H∞ synthesis methods are investigated for the problem of controlling the flight of an aircraft in a vertical plane during landing under conditions of indeterminate disturbances. Both controls allow you to significantly reduce the height deviation. However, H∞ – suboptimal control provides better quality of transients both in height and speed than H2 optimal control. The simulation results of the synthesized system confirm the effectiveness of H∞ – control to increase robust resistance to uncertainties caused by wind disturbances