NEW RESULTS IN CONTROL SYNTHESIS FOR ELECTROHYDRAULIC SERVOS

Authors

  • Ioan Ursu “Elie Carafoli” National Institute for Aerospace Research, Bd. Iuliu Maniu 220, sector 6, Bucharest 06 1099, Romania
  • Felicia Ursu “Elie Carafoli” National Institute for Aerospace Research, Bd. Iuliu Maniu 220, sector 6, Bucharest 06 1099, Romania

Keywords:

electrohydraulic servo, robust linear control, control saturation, antiwindup compensation, fuzzy supervised neurocontrol, backstepping control, numerical simulation

Abstract

This survey presents some recent results of the authors in the field of the control synthesis for electrohydraulic servos. Three are the methodologies of control theory herein considered. Firstly, an integrated methodology of robust control synthesis with antiwindup feedback compensation for linear model of electrohydraulic servo is developed. Secondly, in a strongly nonlinear framework, an integrated fuzzy supervised neurocontrol is proposed. This represents a control strategy which is in fact independent of mathematical model of the systems, thus achieving certain robustness and reducing complexity. At last, the backstepping is used for obtaining of control laws for asymptotic tracking of position or force references in the case of a certain model of an electrohydraulic servo. Conclusive numerical simulations are provided to verify the behaviour of the controlled systems by the proposed control laws.

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Author Biographies

Ioan Ursu, “Elie Carafoli” National Institute for Aerospace Research, Bd. Iuliu Maniu 220, sector 6, Bucharest 06 1099, Romania

Ioan Ursu Graduated in mathematics (fluid mechanics) from University of Bucharest (1969). Ph.D. degree in applied mathematics from “Simion Stoilow” Institute of Mathematics of Romanian Academy (2000). Senior researcher, head of System Analysis Department in “Elie Carafoli” National Institute for Aerospace Research in Bucharest. His activity is involved with all the Romanian aircraft, helicopter and flight simulator projects, from 1969. Member of ROMAI (Romania), GAMM, (Germany), Literati (UK). Aircraft Engineering and Aerospace Technology Award for Excellence (1998).

Felicia Ursu, “Elie Carafoli” National Institute for Aerospace Research, Bd. Iuliu Maniu 220, sector 6, Bucharest 06 1099, Romania

Felicia Ursu Graduated in mathematics (fluid mechanics) from University of Bucharest (1969). Senior researcher in System Analysis Department in “Elie Carafoli” National Institute for Aerospace Research in Bucharest. Her activity is involved with all the Romanian aircraft, helicopter and flight simulator projects, from 1969. Member of ROMAI (Romania) and Literati (UK). Aircraft Engineering and Aerospace Technology Award for Excellence (1998).

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Published

2004-11-01

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