Sliding mode control of a Rotary Inverted Pendulum using higher order differential observer

The Inverted Pendulum is the benchmark system for control methods. Most linear controllers are not efficient under the situations of disturbances and other uncertainties. As high precision and robustness are required, a sliding mode controller is used in this work. Due to uncertainties, a model free based observer is used to estimate some states. The simulation and real experiment results demonstrate the robustness of the controller and the efficiency of a model free observer.