The problem of the robust continuous-time asymptotic tracking and disturbance rejection for a multivariable sampled-data system is studied, for the case when the available description of the continuous-time plant has a known dependence on some “physical” parameters and possibly only some of the scalar outputs must track corresponding reference signals. The necessary and sufficient conditions for the existence of a hybrid control system for which exponential stability with a prescribed rate of convergence and a continuous-time convergence to zero of the tracking error are guaranteed at least in a neighbourhood of the nominal parameters, and, possibly, the convergence is dead-beat at the nominal ones, are reported, together with the necessity of a wholly continuous-time internal model of the exogenous signals.

Robust ripple-free output regulation and tracking under structured and unstructured parameter uncertainties

VALIGI, Paolo
1999

Abstract

The problem of the robust continuous-time asymptotic tracking and disturbance rejection for a multivariable sampled-data system is studied, for the case when the available description of the continuous-time plant has a known dependence on some “physical” parameters and possibly only some of the scalar outputs must track corresponding reference signals. The necessary and sufficient conditions for the existence of a hybrid control system for which exponential stability with a prescribed rate of convergence and a continuous-time convergence to zero of the tracking error are guaranteed at least in a neighbourhood of the nominal parameters, and, possibly, the convergence is dead-beat at the nominal ones, are reported, together with the necessity of a wholly continuous-time internal model of the exogenous signals.
1999
9781852331795
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11391/12537
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