325 citations · 841 across the 67 of their papers we have counts for
8 papers · 1 filter
State Observation of Affine-in-the-States Systems with Unknown Time-Varying Parameters and Output Delay
Alexey Bobtsov, Nikolay Nikolaev, Romeo Ortega +2
In this paper we address the problem of adaptive state observation of affine-inthe-states time-varying systems with delayed measurements and unknown parameters. The development of…
Parameter Estimation of Nonlinearly Parameterized Regressions without Overparameterization nor Persistent Excitation: Application to System Identification and Adaptive Control
Romeo Ortega, Vladislav Gromov, Emmanuel Nuño +2
In this paper we propose a solution to the problem of parameter estimation of nonlinearly parameterized regressions--continuous or discrete time--and apply it for system identifica…
An Adaptive Passivity-Based Controller of a Buck-Boost Converter With a Constant Power Load
Wei He, Romeo Ortega, Juan E. Machado +1
This paper addresses the problem of regulating the output voltage of a DC-DC buck-boost converter feeding a constant power load,which is a problem of current practical interest. De…
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}…
Adaptation is Unnecessary in L1-"Adaptive" Control
Romeo Ortega, Elena Panteley
We show in the paper that the, so--called, "new architecture of L_1-Adaptive Control" is, indeed, different from classical model reference adaptive control. Alas, it is not new, si…
When is a Parameterized Controller Suitable for Adaptive Control?
Romeo Ortega, Elena Panteley
In this paper we investigate when a parameterized controller, designed for a plant depending on unknown parameters, admits a realization which is independent of the parameters. It…
Decentralized adaptive synchronization in nonlinear dynamical networks with nonidentical nodes
Alexander L. Fradkov, Ibragim A. Junussov
For a network of interconnected nonlinear dynamical systems an adaptive leader-follower output feedback synchronization problem is considered. The proposed structure of decentraliz…