Melnik K. µ-Synthesis Technology in Flight Control Problems

This thesis is devoted to the design of the robust control systems for linear as well for non-linear aircraft models (using models of "Beaver" aircraft and small UAV), which are subjected to the prior uncertainties influence and incomplete measurements. During the control law design, the exogenous disturbances (which may occur throughout the flight path) had been taken to account. The obtained robust controller, which was designed by means of µ-synthesis, gives the possibility to save the robust stability and robust performance in the conditions of dramatical plant's parameters change. These results are not achievable by means of the Hinf-synthesis procedure only. Simulation results with fully non-linear model usage highlights the system's proper functioning for structural and non-structural parametric disturbances.