Attitude Control of Ultra-low-earth-orbit Spacecraft Based on the Rarefied Gas Parameter Identification
The aerodynamic torque is the main environmental torque on the ultra-low-earth-orbit, but it cannot be used for the controlling of spacecraft until exact transcendental data about the rarefied gas parameters are evaluated. The accommodation coefficient is one of the key gas parameters. An identification strategy based on recurrence least square is proposed in this paper to calculate the real-time accommodation coefficient, while the moment of inertia of the spacecraft is also identified using this method. To be followed, a simulated ultra-low-earth-orbit spacecraft configured with control panels, which generate aerodynamic torque to stabilize the attitude of the spacecraft, is presented. A controller stabilizing the attitude from any initial orientation is developed in this section. Finally, simulation results of a satellite with four control panels on a 200 km altitudes orbit validated the effectiveness of the identification method.
real-time identification ultra-low-earth-orbit attitude stabilization feedback linearization LSM
Dang Zhaohui Liu Hongwei Liu Qiaolin Liu Shuai
College of Aerospace and Material Engineering, National University of Defense Technology, Changsha 4 College of Aerospace and Material Engineering,National University of Defense Technology, Changsha 41 College of Aerospace and Material Engineering, National University of Defense Technology, Changsha 4
国际会议
2010 Asia-Pacific International Symposium on Aerospace Technology(2010 亚太航空航天技术研讨会 APISAT 2010)
西安
英文
564-568
2010-09-01（万方平台首次上网日期，不代表论文的发表时间）