کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1715446 | 1519971 | 2012 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Hybrid thrusters and reaction wheels strategy for large angle rapid reorientation with high precision Hybrid thrusters and reaction wheels strategy for large angle rapid reorientation with high precision](/preview/png/1715446.png)
The quaternion-based, high precision, large angle rapid reorientation of rigid spacecraft is the main problem investigated in this study. The operation is accomplished via a hybrid thrusters and reaction wheels strategy where thrusters are engaged in providing a primary maneuver torque in open loop, while reaction wheels provide fine control torque to achieve high precision in closed-loop control. The inaccuracy of thrusters is handled by a variable structure control (VSC). In addition, a signum function is mixed in the switching surface in VSC to produce a maneuver to the reference attitude trajectory in a shortest distance. Detailed proofs and numerical simulation examples are presented to illustrate all the technical aspects of this work.
► We introduce the hybrid thrusters and reaction wheels strategy.
► The inaccuracy of thrusters is addressed by a variable structure control law.
► A new switching surface is used to achieve a shortest distance attitude maneuver.
Journal: Acta Astronautica - Volume 77, August–September 2012, Pages 149–155