NDLI: Drag-free controller design of the ultra-low-orbital flight

Content Provider	IEEE Xplore Digital Library
Author	Yan Wei Ming Xu Shanshan Du
Copyright Year	2014
Description	Author affiliation: Beihang Univ., Beijing, China (Yan Wei; Ming Xu) \|\| DFH Satellite Co., Ltd., Beijing, China (Shanshan Du)
Abstract	The ultra-low orbit satellites generally orbit at an altitude about 200 km, and have better performance of observing the Earth and receiving information while using the same observation instrument, thus have good economic benefits and broad application prospects. However, the aerodynamic forces and moments interference to the ultra-low-orbit satellites are dozens of orders of magnitude higher than to the traditional ones, resulting in a serious disturbance on the satellites' states, like orbits decay and strong attitude and orbit coupling phenomena. The drag-free controller must meet certain requirements of the power spectral density (referred to as PSD), and the attitude and orbit control power consumption must be economized as low as possible. This paper focus on the accurate atmospheric modeling at 200 km, studies the atmospheric disturbance on the orbit and attitude performance of the low- orbit satellite; compensates the atmospheric perturbation on the orbit and attitude by using the drag-free technology; achieves precise control of low-orbit satellite orbit and attitude by means of three control loop: the test mass loop, the satellite body loop and satellite-test mass loop; besides, in order to improve the control precision, there used the Embedded control strategy considering the measurement noise, the estimated impact of noise, the interference noise and other unknown perturbations. Finally, the paper design appropriate orbital parameters observer and estimator so as to match the attitude and orbit control loop's input. Aerodynamic drag can be used to control the satellite attitude to save energy through rational design, this work try to verify the feasibility of the use of aerodynamic drag for auxiliary attitude control.
Starting Page	4415
Ending Page	4420
File Size	1654731
Page Count	6
File Format	PDF
ISBN	9781479937073
e-ISBN	9781479937080
DOI	10.1109/CCDC.2014.6852958
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-05-31
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Satellites Attitude control Atmospheric modeling Noise Ultra-low-orbit Satellites Attitude and Orbit Strong Coupling Drag-Free Control Aerodynamics Orbits Electronic mail Power Spectral Density
Content Type	Text
Resource Type	Article

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