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该文提出一种基于外扰状态观测器的航天器姿态控制方法。该方法基于航天器姿态控制模型的线性形式,利用双通道控制原理,分别设计镇定补偿器和伺服补偿器解决恒值调节和随动跟踪问题,通过状态反馈实现极点配置,使系统满足给定的动态和静态指标,同时用外扰状态观测器获取干扰量估计并通过补偿通道对干扰进行抑制和消除。仿真结果表明:该系统具有良好的静态和动态特性,同时具有较强的抗干扰能力和一定的工程应用价值。
In this paper, a method of spacecraft attitude control based on external disturbance observer is proposed. Based on the linear form of spacecraft attitude control model, the method is based on the dual-channel control principle. Stabilization compensators and servo compensators are designed respectively to solve the problem of constant-value regulation and follow-up tracking. The state feedback is used to realize the pole placement and make the system meet the given Dynamic and static indexes. At the same time, the disturbance quantity is estimated by the disturbance observer and the interference is suppressed and eliminated through the compensation channel. The simulation results show that the system has good static and dynamic characteristics, strong anti-interference ability and certain engineering application value.