Autonomous Pointing Control of a Large Satellite Antenna Subject to Parametric Uncertainty
AbstractWith the development of satellite mobile communications, large antennas are now widely used. The precise pointing of the antenna’s optical axis is essential for many space missions. This paper addresses the challenging problem of high-precision autonomous pointing control of a large satellite antenna. The pointing dynamics are firstly proposed. The proportional–derivative feedback and structural filter to perform pointing maneuvers and suppress antenna vibrations are then presented. An adaptive controller to estimate actual system frequencies in the presence of modal parameters uncertainty is proposed. In order to reduce periodic errors, the modified controllers, which include the proposed adaptive controller and an active disturbance rejection filter, are then developed. The system stability and robustness are analyzed and discussed in the frequency domain. Numerical results are finally provided, and the results have demonstrated that the proposed controllers have good autonomy and robustness. View Full-Text
Scifeed alert for new publicationsNever miss any articles matching your research from any publisher
- Get alerts for new papers matching your research
- Find out the new papers from selected authors
- Updated daily for 49'000+ journals and 6000+ publishers
- Define your Scifeed now
Wu, S.; Liu, Y.; Radice, G.; Tan, S. Autonomous Pointing Control of a Large Satellite Antenna Subject to Parametric Uncertainty. Sensors 2017, 17, 560.
Wu S, Liu Y, Radice G, Tan S. Autonomous Pointing Control of a Large Satellite Antenna Subject to Parametric Uncertainty. Sensors. 2017; 17(3):560.Chicago/Turabian Style
Wu, Shunan; Liu, Yufei; Radice, Gianmarco; Tan, Shujun. 2017. "Autonomous Pointing Control of a Large Satellite Antenna Subject to Parametric Uncertainty." Sensors 17, no. 3: 560.
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.