Internal models are nowadays customarily used in different domains of science and
engineering to describe how living organisms or artificial computational units embed their …

Repetitive control (RC) has shown to achieve superior rejection of periodic disturbances.
Many nonlinear systems are subject to repeating disturbances. The aim of this article is to …

In this work, we address the problem of designing a control law for a system in feedforward
form to be globally incrementally exponentially stable. To do that, we develop an …

This paper considers the same class of zero-relative-degree nonlinear systems for which a
saturated Repetitive Learning Control (RLC) has been recently shown to ensure exponential …

In linear system theory, it is a well-known fact that a regulator given by the cascade of an
oscillatory dynamics, driven by some regulated variables, and of a stabiliser stabilising the …

This note deals with the problem of output regulation for nonlinear systems in presence of
periodic exogenous signals. We investigate the asymptotic properties of a controller given …

Sylvester equations, their duals, and their nonlinear generalizations arise in a wide variety of
systems and control problems. Here we provide an overview of classical and recent …

In linear regulation theory, it is well-known that embedding in the control loop a suitable
internal model of the exogenous disturbances and references permits to achieve perfect …

This paper addresses the problem of robust output regulation for uncertain nonlinear
minimum phase systems affected by an unknown external disturbance. We present a novel …

This paper investigates the problem of disturbance rejection for SISO uncertain nonlinear
minimum phase systems perturbed by an unmeasurable external disturbance under the …