The invention discloses a flexible agile spacecraft asymmetric attitude constraint control method based on event driving, and the method comprises the steps: building a flexible agile spacecraft attitude dynamic model considering multiple interferences according to the dynamic characteristics in a spacecraft attitude control task; comprising flexible vibration, unknown external disturbance torque and inertia parameter uncertainty; then designing a modal observer and a disturbance observer, wherein the designed modal observer and disturbance observer respectively obtain a vibration modal online observation value and an online observation value of composite disturbance composed of unknown external disturbance torque and inertia uncertainty; the method comprises the following steps: constructing an asymmetric TVIBLF for processing attitude angle constraint and a constant IBLF for processing angular velocity constraint; and finally, designing a flexible agile spacecraft attitude controller under the asymmetric full-state constraint when the condition is triggered, and proposing an event driving condition. The invention can effectively reduce the updating frequency and reduce the consumption of communication resources.
本发明公开了一种基于事件驱动的挠性敏捷航天器非对称姿态约束控制方法,首先根据航天器姿态控制任务中的动力学特性,建立考虑多重干扰的挠性敏捷航天器的姿态动力学模型,包括挠性振动、未知外界干扰力矩以及惯性参数不确定性;然后设计模态观测器及干扰观测器,所设计的模态观测器和干扰观测器分别获得振动模态在线观测值及未知外界干扰力矩和惯性不确定性组成的复合干扰的在线观测值;接下了构造处理姿态角约束的非对称TVIBLF和处理角速度约束的恒定IBLF;最终设计条件触发时的非对称全状态约束下的挠性敏捷航天器姿态控制器,并提出事件驱动条件。本发明能够有效降低更新频率,减少通信资源消耗。
Flexible agile spacecraft asymmetric attitude constraint control method based on event driving
基于事件驱动的挠性敏捷航天器非对称姿态约束控制方法
2025-05-23
Patent
Electronic Resource
Chinese
IPC: | B64G Raumfahrt , COSMONAUTICS |