Filtering controller in sliding mode: From the estimation to control

The paper introduces the concept of a filtering controller (FC), which uses sliding mode control as its basis. The FC ‘seamlessly’ integrates a smoothed variable structure filter with a variable structure controller. The paper provides the conceptual derivations of variable structure filtering and its integration with a controller in the presence of uncertainties and non-linearities in control systems. Concepts supported with basic describing equations are used to demonstrate how the FC is developed.