23rd Congress of International Council of the Aeronautical Sciences, 8-13 September, 2002, Toronto, Canada
Paper ICAS 2002-5.4.2

ROBUSTIFICATION OF AN H2 AUTOPILOT FOR FLEXIBLE AIRCRAFT BY SELF-SCHEDULING BASED ON MULTI-MODEL EIGENSTRUCTURE ASSIGNMENT

G. Constant, S. Chable, C. Chiappa, C. Döll
SUPAERO/ONERA, France

Keywords: flexible structures, aeroservoelasticity, modal multi–model control, parametric robustness, self–scheduling

This paper describes the synthesis of a self-scheduled controller robust with respect to parametric uncertainties. The method is based on worst-case analysis and multi-model eigenstructure assignment. It permits the designer to synthesize a robust low order controller. The method is then applied to robustify an initial H2 autopilot for flexible aircraft w.r.t. mass and airspeed variations.

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