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Nonlinear and linear autopilot performance comparison of tactical flight vehicle

Padhi, Radhakant and Sarkar, AK and Kar, PK and Srinivasan, T and Sirisha, CHV (2012) Nonlinear and linear autopilot performance comparison of tactical flight vehicle. In: AIAA Guidance, Navigation, and Control Conference, 13-16 August 2012, Minneapolis, Minnesota.

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Official URL: http://dx.doi.org/10.2514/6.2012-4683


n this paper, three-axis autopilot of a tactical flight vehicle has been designed for surface to air application. Both nonlinear and linear design synthesis and analysis have been carried out pertaining to present flight vehicle. Lateral autopilot performance has been compared by tracking lateral acceleration components along yaw and pitch plane at higher angles of attack in presence of side force and aerodynamic nonlinearity. The nonlinear lateral autopilot design is based on dynamic inversion and time scale separation principle. The linear lateral autopilot design is based on three-loop topology. Roll autopilot robustness performance has been enhanced against unmodeled roll disturbances by backstepping technique. Complete performance comparison results of both nonlinear and linear controller based on six degrees of freedom simulation along with stability and robustness studies with respect to plant parameter variation have been discussed in the paper.

Item Type: Conference Paper
Publisher: American Institute of Aeronautics and Astronautics
Additional Information: Copyright of this article belongs to American Institute of Aeronautics and Astronautics.
Department/Centre: Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering)
Date Deposited: 06 Mar 2014 06:47
Last Modified: 06 Mar 2014 06:47
URI: http://eprints.iisc.ac.in/id/eprint/48531

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