In this paper, a wind power system based on a doubly-fed induction generator (DFIG) is modeled and simulated. To guarantee high-performance control of the powers injected into the grid by the wind turbine, five intelligent super-twisting sliding mode controllers (STSMC) are used to eliminate the active power and current ripples of the DFIG. The STSMC controller is a high-order sliding mode cont...

For the present paper, we developed an output feedback chattering position regulator for n-degreesof-freedom (DOF) robot manipulators with elastic and frictional joints. A stability analysis of the closed-loop dynamic system in question was developed within the framework of Lyapunov functions. Performance issues related to the chattering regulator are illustrated in numerical simulations and ex...

<p class="Default">The use of the classical (SMC) applied to control stator’s powers DFIG, gives problem chattering, therefore avoid this phenomenon a robust algorithm (STSMC) is applied. This paper presents comparison conventional SMC with proposed strategy STSMC algorithm. The results are obtained using MATLAB and demonstrate stability robustness algorithm.</p>

Routing mechanisms for stochastic networks are often designed to produce state space collapse (SSC) in a heavy-traffic limit, i.e., to confine the limiting process to a lower-dimensional subset of its full state space. In a fluid limit, a control producing asymptotic SSC corresponds to an ideal sliding mode control that forces the fluid trajectories to a lower-dimensional sliding manifold. With...

Routing mechanisms for stochastic networks are often designed to produce state space collapse (SSC) in a heavy-traffic limit, i.e., to confine the limiting process to a lower-dimensional subset of its full state space. In a fluid limit, a control producing asymptotic SSC corresponds to an ideal sliding mode control that forces the fluid trajectories to a lower-dimensional sliding manifold. With...

In this paper, a RBF network with Gaussians is adapted through a combination of switching and integral laws. The idea is to take the best features of each method. The hyperbolic tangent is used instead of signal function what reduces the chattering phenomenon. A hyperbolic secant is used to intercalate the methodologies, yielding a dual mode that results on zero error in steady state and a smoo...

Routing mechanisms for stochastic networks are often designed to produce state space collapse (SSC) in a heavy-traffic limit, i.e., to confine the limiting process to a lower-dimensional subset of its full state space. In a fluid limit, a control producing asymptotic SSC corresponds to an ideal sliding mode control that forces the fluid trajectories to a lower-dimensional sliding manifold. With...

Introduction. Recently, wind power generation has grown at an alarming rate in the past decade and will continue to do so as electronic technology continues advance. Purpose. Super-twisting sliding mode control for brushless doubly-fed reluctance generator based on energy conversion system. Methods. This paper deals with robust of a grid-connected driven by variable speed turbine using structur...

Introduction. With the advancements in variable speed direct drive design and control of wind energy systems, efficiency capture these systems is also increasing. As such, numerous linear controllers have been developed, literature, for MPPT which use characteristics turbine system. The major limitation all those that they linearized model cannot deal with nonlinear dynamics a However, real exh...

Mobile computer users often have a false sense of anonymity when they connect to the Internet at cafes, hotels, airports or other public places. In this paper, we analyze information leaked by mobile computers to the local access link when they are outside their home domain. While most application data can be encrypted, there is no similar protection for signaling messages in the lower layers o...