0000000000240464

AUTHOR

Ryszard Rojek

showing 2 related works from this author

Linear parameter estimation and predictive constrained control of wiener/hammerstein systems

2003

Abstract A new, analytical, orthonormal basis functions (OBF)-based design methodology for adaptive predictive constrained control of open-loop stable, possibly nonminimum phase, time-varying Wiener and Hammerstein systems is presented. A linear adaptive least-squares parameter estimation algorithm is applied both to a nonlinear static part and a linear dynamic, OBF-modeled factor of the Wiener/Hammerstein system. A notion of inverse systems is crucial for linear estimation of both Wiener and Hammerstein systems, with in verses of the nonlinear or linear parts respectively involved. The adaptive estimator is coupled with a simple but robust, predictive control strategy called Extended Horiz…

Nonlinear systemModel predictive controlAdaptive controlEstimation theoryControl theoryAdaptive systemAdaptive estimatorInverseNonlinear controlMathematicsIFAC Proceedings Volumes
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Adaptive estimation of Laguerre models with time-varying delay

2000

Abstract An Orthonormal Basis Functions (OBF) approach is effectively used in adaptive parameter estimation of linear(ized) open-loop stable, possibly nonminimum phase plants with time-varying delay. In particular, discrete Laguerre models are considered in detail. A special attention is paid to the numerical conditioning issue in case of ’poor’ excitation of a plant under control, where OBF models are of particular value. Closed-loop predictive control simulations confirm the usefulness of adaptive OBF modelling, especially for systems with time-varying delays.

Model predictive controlAdaptive controlEstimation theoryControl theoryAdaptive systemLaguerre polynomialsPhase (waves)System identificationOrthonormal basis functionsMathematicsIFAC Proceedings Volumes
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