零动量轮卫星姿态控制系统研究

针对零动量轮卫星控制系统解耦和进动抑制问题,提出了一种新的进动抑制方案。分析了仅靠飞轮控制的零动量轮卫星系统的稳定性。将偏置动量轮卫星的进动和章动抑制原理引入零动量控制系统,并针对零动量轮卫星自身特性,对磁控制规律进行改进,解决了不解耦情况下零动量轮卫星的进动抑制问题。仿真结果验证了所提方案的可行性和有效性。

Research on Satellite Attitude Control Problems of Zero-momentum Reaction Wheel System

To study the problems of decoupling and eliminating precession for zero-momentum reaction wheel system,a new method to eliminate precession was put forward.The stability of zero-momentum wheel satellite,only using wheel as the executive component,was analysed.The principle which was used by the bias momentum system to eliminate precession and nutation was utilized to zero-momentum wheel system.According to the characteristic of zero-momentum reaction wheel,the magnetic control laws were improved.The proposed scheme was applied to zero-momentum wheel system to cope with its attitude control problems while non-decoupling. Numerical simulations were conducted,and the results demonstrate the feasibility and validity of the proposed method.