Zobrazeno 1 - 10
of 18
pro vyhledávání: '"J.A. Mellstrom"'
Publikováno v:
IEEE Antennas and Propagation Magazine. 47:55-59
Accurate information about the action of wind on antennas is required for the sizing of antenna motors and for reliable prediction of antenna pointing errors in windy weather. For these purposes, wind-tunnel data were obtained 40 years ago, using a s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::84c885b5a821f8dffcd8e2a34338dfe0
https://doi.org/10.1109/map.2005.1599166
https://doi.org/10.1109/map.2005.1599166
Publikováno v:
IEEE Transactions on Control Systems Technology. 3:417-421
The controller development and the tracking performance evaluation for NASA's deep space network antennas are presented. A command preprocessor, LQG controller, feedforward controller, and their combination are designed, built, analyzed, and tested.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::95bdfd32333532349239df00a3c5eed7
https://doi.org/10.1109/87.481966
https://doi.org/10.1109/87.481966
Publikováno v:
IFAC Proceedings Volumes. 27:393-398
The controller development and the tracking performance evaluation for NASA's Deep Space Network antenna are presented. A trajectory preprocessor, LQG (Linear Quadratic Gaussian) controller, feedforward controller, and their combination are designed,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c284c44b424dc8b7f1fbcf7312052ae0
https://doi.org/10.1016/s1474-6670(17)45831-9
https://doi.org/10.1016/s1474-6670(17)45831-9
Autor:
J.A. Mellstrom, J.E. McInroy
Publikováno v:
Proceedings of 1995 American Control Conference - ACC'95.
Many design algorithms have been derived to help ensure that a closed-loop system closely tracks desired trajectories. In contrast, few algorithms have concentrated on conditioning the desired trajectories so they can be easily tracked. This study us
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::47be7de92755cfe5191746a56f92fcc2
https://doi.org/10.1109/acc.1995.532091
https://doi.org/10.1109/acc.1995.532091
Autor:
C. Sepulveda, Leon Alkalai, B. Hancock, G. Domingo, J.A. Mellstrom, I. Ruiz, Bedabrata Pain, Carl Christian Liebe, Don Hunter
Publikováno v:
Proceedings, IEEE Aerospace Conference.
JPL has conducted a study on how to design future miniaturized star trackers. The study proposes an ultra-low power (70 mW), ultra-low mass (42 grams) and very fast (50 Hz) Micro, APS-based Star Tracker (MAST). The accuracy of the MAST will be /spl s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1d2b56818712ffb0fe8c046af67d80c6
https://doi.org/10.1109/aero.2002.1035396
https://doi.org/10.1109/aero.2002.1035396
Autor:
G.M. Swift, J.M. Ratliff, James W. Alexander, M. Wadsworth, Carl Christian Liebe, J.A. Mellstrom, B. Hancock, W.J. Walker, A.R. Eisenman
Publikováno v:
1999 IEEE Aerospace Conference. Proceedings (Cat. No.99TH8403).
Star trackers are an accurate device used by most spacecraft to autonomously determine their orientation. The future Europa Orbiter mission poses significant environmental challenges not typically encountered in other space missions. The Jovian syste
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::36aa84c436a9e35cf4104260f69b429c
https://doi.org/10.1109/aero.1999.793147
https://doi.org/10.1109/aero.1999.793147
A controller development and the tracking performance evaluation for NASA's Deep Space Network antenna are presented. A trajectory preprocessor, LQG controller, feedforward controller, and their combination are designed, built, analyzed, and tested.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ad9d4d05f74c030e8c6820c985b5f907
https://doi.org/10.1016/b978-0-08-042238-1.50065-3
https://doi.org/10.1016/b978-0-08-042238-1.50065-3
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