导航

ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2015, Vol. 36 ›› Issue (10): 3382-3392.doi: 10.7527/S1000-6893.2015.0093

• Electronics and Control • Previous Articles     Next Articles

Angular velocity depressing method of constrained and centroid biased on-orbit separation

JIANG Chao, WANG Zhaokui, ZHANG Yulin   

  1. School of Aerospace Engineering, Tsinghua University, Beijing 100084, China
  • Received:2014-10-27 Revised:2015-04-01 Online:2015-10-15 Published:2015-04-24
  • Supported by:

    National High-tech Research and Development Program of China (2012AA120603)

Abstract:

The constrained and centroid biased on-orbit separation is a special kind of on-orbit separation problems. The offset between separation force acting line and the centroid of the release platform brings separation moment and leads to angular velocity. Then both the pointing precision of small satellite and the attitude stabilization of the release platform will be disturbed by on-orbit separation. However, it is difficult to depress the disturbances in quite a short time by general fast attitude maneuver or stabilizing methods. So, a method of angular velocity depressing of the constrained and centroid biased on-orbit separation is researched. With the analysis of the separation dynamics, the feed-forward moment control method and the angular velocity offset method are presented. The calculation formulas of control parameters are derived and optimized. The influences caused by implementing factors are analyzed as well. Finally, the two angular velocity depressing methods are proved to be effective by numerical simulations, along with some suggestions in engineering application.

Key words: on-orbit separation, dynamics, pointing precision, feed-forward control, nonlinear, pulse-width pulse-frequency (PWPF) modulation

CLC Number: