ABSTRACT

This chapter provides a case study that presents the design of an attitude control system (ACS) for a satellite with flexible solar panels. The control system has three simultaneous objectives for every plant within the model uncertainty: to regulate the angle of motion of the satellite, to reject unpredictable disturbances, and to minimize the solar panel vibrations. The chapter proposes a classical 2DOF control system that includes a feedback compensator and a prefilter. Then it models and analyzes the dynamics of the satellite, proposes a set of stability and performance specifications, designs the controllers, and validates them in both the frequency and time domains. The chapter explains how to design a robust QFT Attitude Control System for a satellite with flexible solar panels. The design considers the model uncertainty introduced by the fuel consumption and the imprecise knowledge of the damping coefficients.