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Article type: Research Article
Authors: Parman, Setyamartana; | Koguchi, Hideo
Affiliations: Department of Mechanical Engineering, Nagaoka University of Technology, Kamitomioka‐machi 1603‐1, Nagaoka‐shi, Niigata 940‐2188, Japan
Note: [] Corresponding author. Tel.: +81 258 471611, ext. 7475; Fax: +81 258 479770; E‐mail: alamanda@stn.nagaokaut.ac.jp.
Abstract: A three‐dimensional rest‐to‐rest attitude maneuver of flexible spacecraft equipped by on‐off reaction jets is studied. Equations of motion of the spacecraft is developed by employing a hybrid system of coordinates and Lagrangian formulation. The finite element method is used to examine discrete elastic deformations of a particular model of satellite carrying flexible solar panels by modelling the panels as flat plate structures in bending. Results indicate that, under an unshaped input, the maneuvers induce undesirable attitude angle motions of the satellite as well as vibration of the solar panels. An input shaper is then applied to reduce the residual oscillation of its motion at several natural frequencies in order to get an expected pointing precision of the satellite. Once the shaped input is given to the satellite, the performance improves significantly.
Keywords: Euler angles, finite element, residual vibration, rest‐to‐rest, shaped input
Journal: Shock and Vibration, vol. 6, no. 1, pp. 11-27, 1999
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