Flexible spacecraft robust multi-objective attitude controller design

作者：Zhang Long^*; Duan Guang Ren

来源：Journal of Astronautics, 2011, 32(11): 2326-2332.

DOI：10.3873/j.issn.1000-1328.2011.11.004

• Actuator saturations
• Attitude controller
• External disturbances
• Feedback controller
• Free parameters
• Multi objective
• Multi-objective design
• Optimization parameter
• Parametric eigenstructure assignment
• Spacecraft attitude control
• Structural parameter
• Vibration modes
• Vibration suppression

Vibration of spacecraft flexible appendages negatively affectes the spacecraft attitude control accuracy, and is difficult to measure directly. A robust multi-objective attitude control system based on a vibration mode observer is proposed to solve the problem. By employing the parametric eigenstructure assignment method, the analytical forms of feedback controller and observer included a set of free parameters are constructed. By choosing the multi-objective optimization parameters, the designed control system is robustness to spacecraft structural parameters and external disturbances, and also avoids actuator saturation. A design example for a flexible spacecraft is used to illustrate the effectiveness of the proposed method.

• 出版日期2011