New Robust Control Schemes Based on Both Linear and Sliding Mode Approaches: Design and Application to an Electropneumatic Actuator

New control schemes based on sliding mode control and linear state feedback are proposed to ensure high tracking accuracy with relatively low energy consumption. A time-varying exponent parameter law (linked to homogeneity degree) is introduced to combine the advantages of sliding mode control (high accuracy and robustness) and the linear state feedback (low energy consumption). To show the effectiveness of the proposed approaches, experimental tests are conducted on an electropneumatic setup.