Sliding Regimes on Slow Manifolds of Systems with Fast Actuators

In this article the slow manifold of a system with actuator parasitics is used as a sliding surface on which a Variable Structure Controller recovers the qualitative properties of the reduced order, closed loop system obtained from an ideal actuator-based feedback controller design. Illustrative examples are presented, where 1) the simplicity of reduced order singular perturbation design methods; and 2) the robustness of Variable Structure sliding modes, are advantageously combined.