General Structure of Anti-Windup Control System Based on Left Coprime Factorization

GIMC structure based Anti-Windup control considering L2 performance

This paper deals with GIMC (Generalized Internal Model Control) structure based Anti-Windup (AW) control system design. First, we setup a L2 performance criterion based on GIMC structure for Anti-Windup control problems. The design problem is formulated as an optimization problem with a parameterQ. Then we calculate the optimization problem and find an optimal Q. Finally, the effectiveness of p...

Anti Windup and Override Control

Robust via left stabilisation of nonlinear plants coprime factorization *

In this paper we take steps towards the development of a robust stabilization theory for nonlinear plants. An approach using the left coprime factorization of the plant and controller under certain differential boundedness assumptions is used. We first foeus attention on a characterization of the class of all stabilizing nonlinear controllers K~ for a nonlinear plant G, parameterized in terms o...

On frequency-weighted coprime factorization based controller reduction

We consider the efficient solution of a class of coprime factorization based controller approximation problems by using frequency-weighted balancing related model reduction approaches. It is shown that for some special stability enforcing frequency-weights, the computation of the frequency-weighted controllability and observability grammians can be done by solving reduced order Lyapunov equatio...

Duality and the normalized left coprime factorization for a nonlinear system

This paper considers the nonlinear left coprime factorization (NLCF) of a nonlinear system. In order to study the balanced realization of such NLCF first a dual system notion is introduced. The important energy functions for the original NLCF and their relation with the dual NLCF are studied and relations between these functions are established. These developments can be used for studying a rel...