Model-Predictive Control Design for Power System Oscillation Damping via Excitation–A Data-Driven Approach

W Han, AM Stanković - IEEE Transactions on Power Systems, 2022 - ieeexplore.ieee.org
This paper presents a novel power system oscillation damping controller design based on a
data-driven model-predictive control (MPC) approach. The system dynamics are extracted …

A state observer for sensorless control of magnetic levitation systems

AA Bobtsov, AA Pyrkin, RS Ortega, AA Vedyakov - Automatica, 2018 - Elsevier
In this paper we address the problem of state observation for sensorless control of magnetic
levitation systems, that is, the regulation of the position of a levitated object measuring only …

On state observers for nonlinear systems: A new design and a unifying framework

B Yi, R Ortega, W Zhang - IEEE Transactions on Automatic …, 2018 - ieeexplore.ieee.org
In this paper, we propose a new state observer design technique for nonlinear systems. It
combines the well-known Kazantzis–Kravaris–Luenberger observer and the recently …

Output feedback stabilization of non-uniformly observable systems

L Brivadis, JP Gauthier, L Sacchelli - Proceedings of the Steklov Institute of …, 2023 - Springer
Stabilizing the state of a system relying only on the knowledge of a measured output is a
classical control theory problem. Designing a stable closed loop based on an observer …

A switching technique for output feedback stabilization at an unobservable target

L Brivadis, L Sacchelli - … 60th IEEE Conference on Decision and …, 2021 - ieeexplore.ieee.org
We consider the problem of dynamic output feedback stabilization at an unobservable target
point. The challenge lies in according the antagonistic nature of the objective and the …

Adding virtual measurements by PWM-induced signal injection

D Surroop, P Combes, P Martin… - 2020 American Control …, 2020 - ieeexplore.ieee.org
We show that for PWM-operated devices, it is possible to benefit from signal injection without
an external probing signal, by suitably using the excitation provided by the PWM itself. As in …

Dynamic output stabilization of control systems: An unobservable kinematic drone model

A Ajami, JP Gauthier, L Sacchelli - Automatica, 2021 - Elsevier
The problem of dynamic output stabilization is a very general and important problem in
control theory. This problem is completely solved in the case where the system under …

Relaxing the conditions for parameter estimation-based observers of nonlinear systems via signal injection

B Yi, R Ortega, W Zhang - Systems & Control Letters, 2018 - Elsevier
Parameter estimation-based observers are a new kind of state reconstruction methods
where the state observation task is translated into an on-line parameter estimation problem …

An adaptive observer for sensorless control of the levitated ball using signal injection

B Yi, R Ortega, H Siguerdidjane… - 2018 IEEE Conference …, 2018 - ieeexplore.ieee.org
In this paper we address the problem of sensorless control of the I-DOF magnetic levitation
system. Assuming that only the current and the voltage are measurable, we design an …

On generation of virtual outputs via signal injection: Application to observer design for electromechanical systems

B Yi, R Ortega, H Siguerdidjane, JE Machado… - European Journal of …, 2020 - Elsevier
Probing signal injection is a well-established technique to extract additional information from
a weakly (or non) observable dynamical system. Using averaging theory, a framework to …