23rd Congress of International Council of the Aeronautical Sciences, 8-13 September, 2002, Toronto, Canada
Paper ICAS 2002-R77

PROPOSALS AND COMPARATIVE EVALUATION OF SYNTHETIC NONLINEAR MODELS IN FLIGHT CONTROLS SIMULATION

G. Villero, L. Borello
Turin Polytechnic University, Italy

Keywords: flight controls, mathematical modelling

The paper proposes two simplified second order mathematical models concerning generic position servomechanisms and discusses their behaviour compared to a high order model considered as a sufficiently accurate reference for an electrohydraulic servo-system; the comparison is furtherly extended to the first order models usually employed in the dynamic simulation of the aeroplane – autopilot – servocontrol system. The results point out that only the proposed non linear second order model is a satisfying answer to the demand of simple, but acceptably accurate, simulation model of the flight controls.

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