Modeling and control of a stratospheric satellite

Trajectory tracking control of a stratospheric satellite is investigated in this paper. A simplified dynamical model for the stratospheric satellite is established based on the Lagrange equation to design its longitudinal trajectory tracking controller. From the model it is proved that the tracking problem cannot be solved by direct input-output feedback linearization control strategy, so the stratospheric satellite model is decomposed into two subsystems and a controller composed by two serial feedback sub-controllers for these subsystems is presented. Simulation results illustrate the performance of the closed-loop system controlled by the proposed controller.