By France) IFAC Symposium (10th : 1985 : Toulouse, J. P. Chretien
Offers an authoritative assessment of the new advancements and technical advances within the purposes of automatic regulate to area know-how. subject matters lined comprise: geostationary satellites, clinical satellites, versatile structures, low earth orbit satellites, orbit and trajectory regulate, part know-how, systems, rendez-vous and docking (RVD) and manipulators. comprises 39 examine and overview papers.
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Additional info for Automatic Control in Space 1985. Proceedings of the Tenth IFAC Symposium, Toulouse, France, 24–28 June 1985
Normal Mode Analysis (briefly described here) a) Wgrking-pihases_and_[)erturbatigns Three working phases are to be considered : . the 2 antennae are in tracking mode (ka band) . one antenna in repointing mode (open loop, large amplitude motion), the other in tracking mode . one antenna in fine acquisition mode (S band), the other in tracking mode. In addition to long-term perturbations due to solar pressure, short-term perturbations are actino on each satellite substructure : 41 Evaluation of Control Concepts .
SCHWERTASSEK, J. WITTENBURG. G. 07, DFVLR, Oberpfaffenhofen, March 1984. 5. IMBERT, A. MAMODE. "Effective Mass Concept, Helpful to Characterize Structure Dynamics with Base Excitation", CNES, Mecanique Materiaux Electricite, Report 342/43/44, 1978. 6. P. GUIBERT and others. "Etude generale de l'influence des liquides contenus dans les sa tellites", ONERA, Final Report, ESA Contract CR 1166, 1978. 7. N. "The Dynamic Behaviour of Liquids in Moving Containers", NASA, Report SP106, Chapters 2, 6, 11, 1966.
Simulation results and performance evaluations of selected control systems are shown. The study synthesis leads to point out some recommendations for further studies. Keywords. Relay satellite; dynamics modelling; control system synthesis, optimal modal control. is selected taking into account three working phases corresponding to tracking, repointing and fine acquisition modes of antennae. Some simula tion results are presented here as an illustration of the proposed conclusions. These conclusions are summed up in the study synthesis which leads to some recommendations for further study.