This paper proposes a new mathematical model called SIRDQ considering control laws for the government actions in order to reduce quarantine periods. The proposed guarantee regulation of effective number reproduction desired value, which is directly related propagation epidemic model. We consider two strategies based on first-order sliding mode and super-twisting algorithm due its robustness wit...

Due to the nonminimum phase characteristics and nonlinearity of boost converters, control design is always a challenging issue. A novel model predictive strategy proposed for converter in this work. First, Super-Twisting algorithm applied current control, input–output plant voltage derived based on linearization technique. All uncertainties are defined as lumped disturbances, generalized propor...

A robust hierarchical observer is designed for linear time invariant systems with unknown bounded inputs under conditions of strong observability, providing exact state estimation. The main condition for designing the state estimator is the, so-called, strong observability condition. The supertwisting (secondorder sliding mode) algorithm is used in each step of the hierarchy; the continuity of ...

The articulated intervention autonomous underwater vehicle (AIAUV) is an swimming manipulator with capabilities. Station-keeping and trajectory tracking are essential for the AIAUV to be able move in confined spaces perform tasks. In this article, we propose using a generalized super-twisting algorithm (GSTA), which extension of regular algorithm, position orientation base six degrees freedom (...

This paper deals with the design of nonlinear PI control techniques for regulating a class of fractional-order dynamics governed by a commensurate-order model, possibly nonlinear, perturbed by an external disturbance. The suggested control algorithm is the combination between a fractional-order PI controller and a nonlinear robust version of it, namely a secondorder sliding mode control algorit...

This paper presents a brief study on the design and performance comparison of conventional first-order and super-twisting second-order sliding mode observers for some nonlinear control systems. Estimation accuracy, fast response, chattering effect, peaking phenomenon and robustness are considered for nonlinear systems under observer-based output feedback control and state feedback control.