Wave-Based Attitude Control of Spacecraft with Fuel Sloshing Dynamics

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Title: Wave-Based Attitude Control of Spacecraft with Fuel Sloshing Dynamics
Authors: Thompson, Joseph W.
O'Connor, William
Permanent link: http://hdl.handle.net/10197/8005
Date: 2-Jul-2015
Abstract: Wave-Based Control has been previously applied successfully to simple underactuated flexible mechanical systems. Spacecraft and rockets with structural flexibility and sloshing are examples of such systems but have added difficulties due to non-uniform structure, external disturbing forces and non-ideal actuators and sensors. The aim of this paper is to extend the application of WBC to spacecraft systems, to compare the performance of WBC to other popular controllers and to carry out experimental validation of the designed control laws. A mathematical model is developed for an upper stage accelerating rocket moving in a single plane. Fuel sloshing is represented by an equivalent mechanical pendulum model. A wave-based controller is designed for the upper stage AVUM of the European launcher Vega. In numerical simulations the controller successfully suppresses the sloshing motion. A major advantage of the strategy is that no measurement of the pendulum states (sloshing motion) is required.
Type of material: Conference Publication
Publisher: International Center for Numerical Methods in Engineering
Keywords: Sloshing;Spacecraft dynamics;Attitude control;Flexible systems;Mechanical waves
Language: en
Status of Item: Not peer reviewed
Is part of: Font-Llagunes, J.M. (eds.) Proceedings of the 2015 ECCOMAS Thematic Conference on Multibody Dynamics 2015 Barcelona, June 29 – July 2, 2015
Conference Details: 2015 ECCOMAS Thematic Conference on Multibody Dynamics, Barcelona, Spain, 29 June - 2 July 2015
Appears in Collections:Mechanical & Materials Engineering Research Collection

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