Modelling for robust feedback control of fluid flows

Feedback Control of Aerodynamic Flows

Every airplane has an associated external flow field that is extraordinarily rich in terms of its flow physics. It is intuitively obvious that the shape and configuration of the airplane influences the external flow physics, and the nature of the flow field influences the aerodynamic performance. An airplane is designed to perform optimally under certain operating conditions. Its aerodynamic pe...

Reduction Methods for Feedback Stabilization of Fluid Flows

This dissertation deals with reduction of two classes of dynamical systems in order to make them suitable for control design using linear systems theory. The first class consists of the large-dimensional systems governing fluid flows, for which we employ dimension reduction techniques for stabilization of unstable steady states. The second class consists of systems with a continuous symmetry, f...

A New Robust Control Design Based on Feedback Compensator for Sssc

In this paper, the modified linearized Phillips-Heffron model is utilized to theoretically analyze asingle-machine infinite-bus (SMIB) installed with SSSC. Then, the results of this analysis are used forassessing the potential of an SSSC supplementary controller to improve the dynamic stability of apower system. This is carried out by measuring the electromechanical controllability through sing...

Robust Predictive Feedback Control for Constrained Systems

A new method for the design of predictive controllers for SISO systems is presented. The proposed technique allows uncertainties and constraints to be concluded in the design of the control law. The goal is to design, at each sample instant, a predictive feedback control law that minimizes a performance measure and guarantees of constraints are satisfied for a set of models that describes the s...

Optimal Control of Navier-Stokes Fluid Flows