Guaranteed robustness bounds for matched-disturbance nonlinear systems

Autor:	E. Gruenbacher, Luigi del Re, Patrizio Colaneri
Rok vydání:	2008
Předmět:	Nonlinear system Test bench Control and Systems Engineering Robustness (computer science) Control theory A priori and a posteriori Affine transformation Electrical and Electronic Engineering Robust control Series and parallel circuits Upper and lower bounds Mathematics
Zdroj:	Automatica. 44:2230-2240
ISSN:	0005-1098
DOI:	10.1016/j.automatica.2007.12.018
Popis:	This paper considers input affine nonlinear systems with matched disturbances and shows how to compute an a priori upper bound of the H"~ attenuation level achieved by the optimal L"2 controller and the suboptimal H"~ central controller. The case where the disturbance contains a constant term is also discussed. These bounds are shown to depend only on the function mapping the control input to the performance variable. This result is used to derive a robust control design for a special, but practically important, class of non-input affine nonlinear systems consisting of the series connection of a nonlinear state and input dependent map and of a nonlinear input affine dynamical system. Approximate inversion of the nonlinear static map leads to a robust control problem which fits into the framework. The effectiveness of the theoretical results is shown by its use for the robust control design of a diesel engine test bench.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d327f37bfa0e3560d2f9748fddcb3d1e https://doi.org/10.1016/j.automatica.2007.12.018 Zobrazit plný text záznamu Full Text from ScienceDirect