Adaptive Robust Constraint-Following Control for Satellite Formation Flying with System Uncertainty

Researchers study the control for constraint following for satellite formation flying with system uncertainty. They consider that the mass of the follower satellite is the uncertain parameter, which is time-varying. They propose a nominal control for the satellite formation flying system when there is no uncertainty by applying Udwadia and Kalaba’s approach. This serves as the basis for the adaptive robust control design. They also propose a class of adaptive laws and robust control schemes to drive the system to follow pre-specified constraints by considering the system uncertainty and possible initial condition deviation from the constraints.