عنوان مقاله [English]
نویسندگان [English]چکیده [English]
In this study, a Dynamic gain scheduling controller is designed to control landing phase of an airship while in existence of wind shear. Wind shear is vertical column sink of air which has a great local effect on airplane operation. This phenomena requires more attention in landing phase. Wind shear has non-linear attitude, hence to confront this phenomena, applying nonlinear controller is proposed. Dynamic gain schedule controller is one of the pioneer methods in nonlinear controllers and many desired results for nonlinear systems is reported for this method. In this study, at first the six degree of freedom equations for the airship is implemented. Then, Vicory model for simulation of microburst phenomena attached to airship equations. In the following, simulation has been done with the presence of microburst. The simulation results present a significant change without control system in parameters including altitude, lateral movement and roll angle during flight. Applying dynamic gain schedule formulation, a controller is designed for improving the performance of airship during the landing and taking off phases with presence of microburst phenomena. The study results represent the ability of dynamic gain schedule controller to control the significant changes in altitude, lateral movement and roll angle. Although some parameters as sliding slip angle and horizontal angle can’t be controlled as well as the other parameters.