Linear systems controlled by a nonlinear version of the PI algorithm are under study. The modified PI controller in question is known in the literature as the Super–Twisting (STW) algorithm (see Levant (1993)), and it belongs to the family of second order sliding mode controllers. The considered closed–loop system exhibits self–sustained stable oscillations (chattering) when the relative degree...

To improve the dynamic quality of PMSM servo system, a generalized super-twisting sliding mode control strategy based on sinusoidal saturation function is proposed in this paper. Firstly, mathematical model established. Then, variable structure speed controller designed algorithm. weaken chattering phenomenon, used instead sign function. Finally, effectiveness was verified by MATLAB/Simulink si...

Aiming at the control system of permanent magnet synchronous servo motor which is easily affected by external disturbance and parameter uncertainty, a single neuron sliding mode combining adaptive algorithm super-twisting (STSM) proposed. The STSM used to overcome chattering problem in traditional control, proportional are combined enhance robustness system. In order improve dynamic performance...

This article addresses the development and experimental validation of a trajectory-tracking control for miniature autonomous Quadrotor helicopter system (X4-prototype) using robust algorithm based on second-order sliding mode technique or also known as super-twisting in outdoor environments. nonlinear strategy guarantees convergence finite time to desired path r(t) presence external disturbance...

In the field of optimizing wind system control approaches and enhancing quality electricity generated on grid, this research makes a fresh addition. The Sliding Mode Control (SMC) technique produces some fairly intriguing outcomes, but it has severe flaw in oscillations (phenomenon reluctance: chattering) that diminish system’s efficiency. paper, an AST (adaptive super twisting) approach is pro...

In this letter, a novel scheme is proposed to identify in finite time the value of an unknown output parameter for class nonlinear dynamical systems. Inspired by Super-Twisting Sliding Mode Algorithm (STA), identification problem solved innovative way, consisting two steps. An STA observer firstly designed track system output. Exploiting behaviour during sliding motion, second scheme, still ins...

A novel kind of adaptive second order sliding mode control algorithm, based on super-twisting law (STW), is proposed and applied to a floating wind turbine (FWT). This new for which the controller gains are dynamically adjusted with respect uncertainties perturbations, has very reduced number tuning parameters versus previous versions STW, low-requirement computational requirement. particularly...