基于模型预测的轨道自主快速大机动控制

Automatic Fast Orbit Transfer Control Based on Model Prediction

为改善太阳同步轨道(SSO)卫星轨道大机动经典控制方法的性能,提出了一种基于卫星动力学模型预测的轨道自主机动控制算法,用大推力轨控发动机开环控制加小推力器闭环修正进行控制。给出了制导策略和算法流程。理论分析和仿真结果表明,该控制算法适于卫星轨道自主快速机动控制,其轨控精度较高,收敛时间可满足快速性要求。

To improve the performances of classic control for large orbit transfer for sun-synchronous orbit （SSO） satellite, an automatic orbit transfer control algorithm based on model prediction was put forward in this paper. The control was implemented through open-loop control of large thruster orbit control motor and closed-loop modification of small thruster. The guidance strategy and algorithm flowchart were presented, The theoretically analysis and simulation results showed that this control law was suitable for automatic orbit transfer control of SSO satellite, which control precision was high and convergence time met the requirement for quick-acting.