One of the most dangerous parts of the flight is the landing phase, as most accidents occur at this stage. In order to reduce the effect of the low-level wind shear on the longitudinal motion of the aircraft in the glide path landing mode (task) a robust H- control is proposed. Dynamic models of the plane and wind shear are built. H 2 and H ∞ synthesis methods are investigated for the task of aircraft flight control in a vertical plane during landing under conditions of undefined disturbances. Both control methods allow to reduce height deviation significantly. However, suboptimal control H ∞ provides better quality of transition processes both in height and speed than optimal control H 2. The results of simulation of the synthesized system confirm the effectiveness of H ∞ - control for increasing robust stability to uncertainties caused by wind disturbances.
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L. N. Gumilyov Eurasian National University
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