Research on proxy-based sliding mode controller of super-twisting algorithm

In order to solve the problem that the proxy-based sliding mode controller can only converge exponentially, resulting in errors. In this paper, we propose a study of a proxy-based sliding mode controller that will use the super-twisting algorithm to improve the original sliding mode controller so that when the input value is constant, the output can converge to the input in the optimal time, thus eliminating the steady state error. And a sliding mode filter is used to avoid the overshooting problem. And the proxy-based sliding mode controller based on super-twisting algorithm is simulated and verified to prove its superiority under closed-loop conditions.