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Record Details

Record 10 of 13813
Optimal periodic control for spacecraft pointing and attitude determination
Author and Affiliation:
Pittelkau, Mark E.(Swales and Associates, Inc., Beltsville, MD, United States)
Abstract: A new approach to autonomous magnetic roll/yaw control of polar-orbiting, nadir-pointing momentum bias spacecraft is considered as the baseline attitude control system for the next Tiros series. It is shown that the roll/yaw dynamics with magnetic control are periodically time varying. An optimal periodic control law is then developed. The control design features a state estimator that estimates attitude, attitude rate, and environmental torque disturbances from Earth sensor and sun sensor measurements; no gyros are needed. The state estimator doubles as a dynamic attitude determination and prediction function. In addition to improved performance, the optimal controller allows a much smaller momentum bias than would otherwise be necessary. Simulation results are given.
Publication Date: Dec 01, 1993
Document ID:
19940034157
(Acquired Dec 28, 1995)
Accession Number: 94A10812
Subject Category: SPACECRAFT DESIGN, TESTING AND PERFORMANCE
Document Type: Journal Article
Publication Information: Journal of Guidance, Control, and Dynamics (ISSN 0731-5090); 16; 6; p. 1078-1084.
Publisher Information: United States
Contract/Grant/Task Num: NAS5-30375
Financial Sponsor: NASA; United States
Organization Source: NASA Goddard Space Flight Center; Greenbelt, MD, United States
Description: 7p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: ATTITUDE CONTROL; MAGNETIC CONTROL; PARAMETER IDENTIFICATION; SPACECRAFT CONTROL; TIME OPTIMAL CONTROL; TIROS SATELLITES; BIAS; CONTROL SYSTEMS DESIGN; GUIDANCE SENSORS; PERFORMANCE PREDICTION; SPACECRAFT PERFORMANCE; TORQUE
Imprint And Other Notes: Journal of Guidance, Control, and Dynamics vol. 16, no. 6 p. 1078-1084. Nov.-Dec. 1993
Availability Source: Other Sources
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