High-precision single-input control of relative motion in spacecraft formation |
| |
| Authors: | Anna Guerman Michael Ovchinnikov Georgi Smirnov Sergey Trofimov |
| |
| Institution: | 1. Centre for Aerospace Science and Technologies, UBI, Department of Electromechanical Engineering, University of Beira Interior, Calçada Fonte do Lameiro, 6201-001 Covilhã, Portugal;2. Keldysh Institute of Applied Mathematics, Orientation and Motion Control Department, Miusskaya pl. 4, 125047 Moscow, Russia;3. Centre of Physics, Department of Mathematics and Applications, School of Sciences, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal;4. Department of Control and Applied Mathematics, Moscow Institute of Physics and Technology, Institutskij per. 9, 141700 Dolgoprudny, Moscow Region, Russia |
| |
| Abstract: | A Newton-type method is proposed to improve the accuracy of control for relative motion of two satellites in close formation. We assume that the deputy satellite is equipped with a passive attitude control system that provides one-axis stabilization, and one or two orbit control thrusters are installed along the stabilized axis. Previous studies show that it is possible to construct periodic relative trajectories both in case of passive magnetic and spin stabilization. However, the accuracy of the numerically obtained control is quite low due to modeling errors caused by linearization of the equations of relative motion. Therefore, a correction procedure is required to compensate for nonlinear effects. To this end we suggest a recently developed algorithm based on the Newton method for solving nonlinear systems with geometric constraints. Being implemented, this algorithm allows decreasing the modeling error by up to ten times. The previously found control and trajectory of the linearized system are used as initial approximations. |
| |
| Keywords: | Formation flying Nonlinear control systems Numerical methods |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
