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Nonlinear control of unmanned combat aircraft during take-off

Pradeep, S (2002) Nonlinear control of unmanned combat aircraft during take-off. In: 40th AIAA Aerospace Sciences Meeting and Exhibit, 14-01-2002, Reno, NV.

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Official URL: https://doi.org/10.2514/6.2002-250


Unmanned combat aircraft have been projected to provide significant improvements in performance over their manned counterparts, without endangering the crew, thus offering a cheaper and more viable option. A major challenge in this nascent area is the design of the flight control system. This paper deals with the design of a feedback linearized controller for automating take-off, which is an inherently nonlinear phase of flight. Pilot opinion was codified to serve as a standard for control design. Based on this, the aircraft was made to track a predetermined pitch rate, accounting for saturations in the the elevator and elevator rates. Simulations show that the performance of the controller is acceptable in the presence of plant uncertainty and sensor noise. Of the plant parameters, variations in the centre of gravity affect it most. Response in the presence of sensor noise is good. A Monte-Carlo simulation shows that the controller does not exhibit unstable tendencies and its performance is acceptable. With these promising results, feedback linearization is proposed as a good nonlinear control design tool for automating combat aircraft take-off. © 1998 by S. Pradeep.

Item Type: Conference Paper
Publication: 40th AIAA Aerospace Sciences Meeting and Exhibit
Publisher: American Institute of Aeronautics and Astronautics Inc.
Keywords: Aircraft control; Controllers; Elevators; Feedback linearization; Flight control systems; Intelligent systems; Monte Carlo methods; Takeoff, Centre of gravity; Combat aircraft; Non linear control; Nonlinear control design; Nonlinear phase; Plant parameters; Plant uncertainty; Unmanned combat aircrafts, Fighter aircraft
Department/Centre: Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering)
Division of Mechanical Sciences > Mechanical Engineering
Date Deposited: 22 Sep 2021 10:02
Last Modified: 22 Sep 2021 16:17
URI: http://eprints.iisc.ac.in/id/eprint/66073

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