Robust controllers for a flexible satellite model

Minimax Design of Robust Controllers for Flexible Systems

The design of robust time-delay and saturating controllers based on the range of expected variation of uncertain parameters from their nominal values is investigated. A minimax optimization problem is formulated with the objective of minimizing the maximum value of the cost function over the range of the uncertain parameter. By the adoption of the residual energy as the cost function, the optim...

Lyapunov-Based Robust Power Controllers for a Doubly Fed Induction Generator

In this work, a robust nonlinear control technique of a doubly fed induction generator (DFIG) intended for wind energy systems has been proposed. The principal idea in this article is to decouple the active and reactive power of the DFIG with high robustness using the backstepping strategy. The principle of this control method is based on the Lyapunov function, in order to guarantee the global ...

Design of Robust Finite-Time Nonlinear Controllers for a 6-DOF Autonomous Underwater Vehicle for Path Tracking Objective

In this paper, kinematic and dynamic equations of a 6-DOF (Degrees Of Freedom) autonomous underwater vehicle (6-DOF AUV) are introduced and described completely. By developing the nonsingular terminal sliding mode control method, three separate groups of control inputs are proposed for the autonomous underwater vehicle subjected to uncertainties including parametric uncertainties, unmodeled dyn...

A Flexible Model and Implementation of Component Controllers

The GCM (Grid Component Model) is a component model that is being defined by the CoreGRID institute on Programming Models; it is based on the Fractal component model. It is intended at overcoming the insufficiencies of the existing component systems when it comes to Grid computing. Its main characteristics are: hierarchical composition, structured communications with support for asynchrony, sup...

Comparison of Conventional and Model، Based Controllers for Controlling a Batch Polymerization Reactor