851 citations · 939 across the 8 of their papers we have counts for
8 papers
Generation of new exciting regressors for consistent on-line estimation of unknown constant parameters
Alexey Bobtsov, Bowen Yi, Romeo Ortega +1
The problem of parameter estimation from a standard vector linear regression equation in the absence of sufficient excitation in the regressor is addressed. The first step to solve…
A Frequency-Domain Stability Method for Reset Systems
Ali Ahmadi Dastjerdi, Alessandro Astolfi, S. Hassan HosseinNia
Nowadays, the demand for an alternative to linear PID controllers has increased because of the rising expectations of the high-precision industry. The potential of reset controller…
New Results on Parameter Estimation via Dynamic Regressor Extension and Mixing: Continuous and Discrete-time Cases
Romeo Ortega, Stanislav Aranovskiy, Anton A. Pyrkin +2
We present some new results on the dynamic regressor extension and mixing parameter estimators for linear regression models recently proposed in the literature. This technique has…
Orbital Stabilization of Nonlinear Systems via the Immersion and Invariance Technique
Romeo Ortega, Bowen Yi, Jose Guadalupe Romero +1
Immersion and Invariance is a technique for the design of stabilizing and adaptive controllers and state observers for nonlinear systems. In all these applications the problem cons…
A Convex Optimization Approach for Backstepping PDE Design: Volterra and Fredholm Operators
Pedro Ascencio, Alessandro Astolfi, Thomas Parisini
Backstepping design for boundary linear PDE is formulated as a convex optimization problem. Some classes of parabolic PDEs and a first-order hyperbolic PDE are studied, with partic…
Families of moment matching based, structure preserving approximations for linear port Hamiltonian systems
Tudor C. Ionescu, Alessandro Astolfi
In this paper we propose a solution to the problem of moment matching with preservation of the port Hamiltonian structure, in the framework of time-domain moment matching. We chara…
Homogeneous Approximation, Recursive Observer Design, and Output Feedback
Vincent Andrieu, Laurent Praly, Alessandro Astolfi
We introduce two new tools that can be useful in nonlinear observer and output feedback design. The first one is a simple extension of the notion of homogeneous approximation to ma…
A note on a piecewise-linear Duffing-type system
G. Tigan, A. Astolfi
In a recent work it was suggested that the number of limit cycles in a piecewise-linear system could be closely related to the number of zones, that is the number of parts of the p…