Automatica, Vol.50, No.12, 3190-3196, 2014
On stability and stabilization of periodic discrete-time systems with an application to satellite attitude control
An alternative stability analysis theorem for nonlinear periodic discrete-time systems is presented. The developed theorem offers a trade-off between conservatism and complexity of the corresponding stability test. In addition, it yields a tractable stabilizing controller synthesis method for linear periodic discretetime systems subject to polytopic state and input constraints. It is proven that in this setting, the proposed synthesis method is strictly less conservative than available tractable synthesis methods. The application of the derived method to the satellite attitude control problem results in a large region of attraction. (C) 2014 Elsevier Ltd. All rights reserved.
Keywords:Periodic systems;Periodic control;Lyapunov functions;Constrained control;Satellite attitude control