Sliding Mode Variable Structure Control for Electromechanical Actuator with Nonlinear Friction

For the nonlinear friction problem of electromechanical actuator and the high-frequency chattering phenomenon in traditional sliding mode controllers,a sliding mode variable structure controller based on a new reaching law is designed.Simulation results show that the presented controller can eliminate"creeping"and"flat-top"phenomena,decrease chattering phenomenon effectively,and improve the dynamic quality.