DESIGN AND SIMULATION OF SEMI-ACTIVE LANDING GEARS FOR TRANSPORT AIRCRAFT*

Abstract

ABSTRACT This paper describes an integrated design process for control laws for semi-active aircraft landing gears, addresses interfaces required for the implementation of different computer aided engineering (CAE) tools used in the process, and presents a multibody aircraft simulation model. Three control laws, a skyhook-type controller, a fuzzy-logic controller, and a state feedback controller, are designed, and the control parameters of all three controllers optimized using a multi-objective parameter optimization. Finally, simulation results for passive, fully active, and semi-active systems are compared.