کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
755305 | 1462519 | 2013 | 10 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Composite control method for stabilizing spacecraft attitude in terms of Rodrigues parameters Composite control method for stabilizing spacecraft attitude in terms of Rodrigues parameters](/preview/png/755305.png)
In this paper, the attitude stabilization problem of a rigid spacecraft described by Rodrigues parameters is investigated via a composite control strategy, which combines a feedback control law designed by a finite time control technique with a feedforward compensator based on a linear disturbance observer (DOB) method. By choosing a suitable coordinate transformation, the spacecraft dynamics can be divided into three second-order subsystems. Each subsystem includes a certain part and an uncertain part. By using the finite time control technique, a continuous finite time controller is designed for the certain part. The uncertain part is considered to be a lumped disturbance, which is estimated by a DOB, and a corresponding feedforward design is then implemented to compensate the disturbance. Simulation results are employed to confirm the effectiveness of the proposed approach.
Journal: Chinese Journal of Aeronautics - Volume 26, Issue 3, June 2013, Pages 687–696