Abstract
To deal with the strong nonlinear attitude-orbit coupling control problem of a flexible lander，a multi-thruster game-based control method is proposed. This method achieves integrated control of attitude and trajectory motion by coordinating the control inputs of multiple thrusters. Firstly，the control strategies interaction of multi-thrusters is realized based on the differential game framework. This framework introduces dynamic prediction information of the system in cooperative control law design，thereby avoiding conflicts and redundancies in multi-thruster control. Therefore，both the overall attitude-orbit performance of the flexible lander and the control energy of each thruster are improved. Secondly，based on sequential approximation and quasi-linearization techniques，a successive approximation-based parameter search algorithm is designed. This algorithm yields closed-form game-based feedback control laws in the presence of strong coupling nonlinearity. As a result，control commands can be autonomously computed onboard. Finally，using a landing scenario on asteroid 433 Eros，the effectiveness of game-based control is validated through numerical simulation.
| Translated title of the contribution | Game-based Control of Strongly Coupled System for Flexible Landing on Small Celestial Body |
|---|---|
| Original language | Chinese (Traditional) |
| Pages (from-to) | 1775-1788 |
| Number of pages | 14 |
| Journal | Yuhang Xuebao/Journal of Astronautics |
| Volume | 45 |
| Issue number | 11 |
| DOIs | |
| Publication status | Published - Nov 2024 |