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...

Magnetic twisting cytometry (MTC) (Wang N, Butler JP, and Ingber DE, Science 260: 1124-1127, 1993) is a useful technique for probing cell micromechanics. The technique is based on twisting ligand-coated magnetic microbeads bound to membrane receptors and measuring the resulting bead rotation with a magnetometer. Owing to the low signal-to-noise ratio, however, the magnetic signal must be modula...

In this paper, we present a high order sliding mode controller of a DC motor drive connected to a multi-cellular converter. More specifically, we design a second order (super twisting) control algorithm for the speed regulation of a DC motor. For this, a switching control for the multi-cellular converter is derived in order to supply the correct reference value for the speed regulation. A pract...

When a disk in 2D is stretched arbitrarily with possible self-overlaps, without twisting it, its boundary forms a complex curve knownas a self-overlapping curve. Themapping between thedisk and its deformed self, also called an immersion of the disk, is useful in many applications like shape morphing and curve interpretation. Given a self-overlapping curve, an algorithm for computing its immersi...

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...

A new sliding mode control approach is introduced in this work with the dedicated mathematical tools. A timedelay modification/approximation of sign function is proposed, and it is shown that by substituting this new “sign” realization in the conventional sliding mode algorithms the main advantages of the sliding mode tools are preserved (like rejection of matched disturbances and hyper-exponen...