Comparison of Autonomous Aerial Refueling Controllers Using Reduced Order Models

The addition of aerial refueling to unmanned aerial vehicles (UAVs) would increase the flight capabilities of UAVs. This paper describes the use of a reduced order model with three control techniques to design an autonomous aerial refueling control system. A robust servomechanism design is used because of its tracking and disturbance rejection characteristics. Next, a model following controller is shown because of its properties to mimic a desired closed loop system. Finally, a mixed sensitivity H∞ controller is picked because it satisfies loop shaping specifications. Simulation results are presented of a linearized model for a tanker (a Boeing 747) and linearized model for a receiver (an F/A-18). Position tracking is achieve, even in the presences of turbulence.

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