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- W2335528890 abstract "The equations of motion for a rnultibody tethered satellite system in three dimensional Keplerian orbit are derived. The model considers a multisatellite system connected in series by flexible tethers. Both tethers and subsatellites are free to undergo three dimensional attitude motion, together with longitudinal and transverse vibration for the tether. The elastic deformations of the tethers are descritized using the assumed mode method. In addition, the tether attachment points to the subsatellites are kept arbitrary and time varying, with deployment and retrieval degrees of freedom. The model is also capable of simulating the response of the entire system spinning about an arbitrary axis, as in the case of OEDIPUS-A/C which spins about the nominal tether length or the proposed BICEPS mission where the system cartwheels about the orbit normal. The governing equations of motion are derived using an Order(N) Lagrangian formulation which significantly reduces the computational cost associated with the inversion of the mass matrix, an important consideration for multi-satellite systems. Also, a symbolic integration and coding package is used to evaluate modal integrals thus avoiding their costly on-line numerical evaluation. Next, versatility of the formulation is illustrated through its application to two different configurations of contemporary interest. Finally, a thruster and momentum-wheel based attitude controller is developed using the Feedback Linearization Technique. The controller is successful in stabilizing the system over a range of mission profiles. * NSERC Graduate Fellow t Professor Emeritus; Fellow AAS, AIAA •f Post-Doctoral Fellow Professor; Senior Member AAS; Associate Fellow AIAA; Copyright©1996 by the authors. Published by the American Institute of Aeronautics and Astronautics, Inc. with permission. A. K. Misra§ Department of Mechanical Engineering McGill University Montreal, Quebec, Canada H3A 2K6" @default.
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- W2335528890 date "1996-07-29" @default.
- W2335528890 modified "2023-09-23" @default.
- W2335528890 title "On the dynamics and control of N-body tethered systems" @default.
- W2335528890 doi "https://doi.org/10.2514/6.1996-3571" @default.
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