325 citations · 841 across the 67 of their papers we have counts for
9 papers · 1 filter
Performance Enhancement of Parameter Estimators via Dynamic Regressor Extension and Mixing
Aranovskiy Stanislav, Bobtsov Alexey, Ortega Romeo +1
A new way to design parameter estimators with enhanced performance is proposed in the paper. The procedure consists of two stages, first, the generation of new regression forms via…
Immersion and Invariance Stabilization of Nonlinear Systems: A Horizontal Contraction Approach
Lei Wang, Fulvio Forni, Romeo Ortega +1
The main objective of this paper is to propose an alternative procedure to carry out one of the key steps of immersion and invariance stabilising controller design. Namely, the one…
A Parameter Estimation Approach to State Observation of Nonlinear Systems
Ortega Romeo, Bobtsov Alexey, Pyrkin Anton +1
A novel approach to the problem of partial state estimation of nonlinear systems is proposed. The main idea is to translate the state estimation problem into one of estimation of c…
Simultaneous Interconnection and Damping Assignment Passivity-based Control of Mechanical Systems Using Generalized Forces
Alejandro Donaire, Romeo Ortega, Jose Guadalupe Romero
To extend the realm of application of the well known controller design technique of interconnection and damping assignment passivity-based control (IDA-PBC) of mechanical systems t…
Extended Hybrid Model Reference Adaptive Control of Piecewise Affine Systems
Mario di Bernardo, Umberto Montanaro, Romeo Ortega +1
This note presents an extension to the adaptive control strategy presented in [1] able to counter eventual instability due to disturbances at the input of an otherwise $\mathcal{L}…
A survey on modeling of microgrids - from fundamental physics to phasors and voltage sources
Johannes Schiffer, Daniele Zonetti, Romeo Ortega +3
Microgrids have been identified as key components of modern electrical systems to facilitate the integration of renewable distributed generation units. Their analysis and controlle…
Global Tracking Passivity--based PI Control of Bilinear Systems and its Application to the Boost and Modular Multilevel Converters
R. Cisneros, M. Pirro, G. Bergna +3
This paper deals with the problem of trajectory tracking of a class of bilinear systems with time--varying measurable disturbance. A set of matrices {A,B_i} has been identified, vi…
Robust PI Passivity-based Control of Nonlinear Systems: Application to Port-Hamiltonian Systems and Temperature Regulation
Stanislav Aranovskiy, Romeo Ortega, Rafael Cisneros
This paper deals with the problem of control of partially known nonlinear systems, which have an open-loop stable equilibrium, but we would like to add a PI controller to regulate…
Two Globally Convergent Adaptive Speed Observers for Mechanical Systems
Jose Guadalupe Romero, Romeo Ortega
A globally exponentially stable speed observer for mechanical systems was recently reported in the literature, under the assumptions of known (or no) Coulomb friction and no distur…