Adaptive Fuzzy PD plus Control for Attitude Maneuver of Rigid Spacecraft
Adaptive Fuzzy PD plus Control for Attitude Maneuver of Rigid Spacecraft
复制标题
刚性航天器姿态机动的自适应模糊PD加控制
DOI：
10.1002/asjc.1116
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发表时间：
2016
影响因子：
2.4
通讯作者：
Cong Binglong
中科院分区：
文献类型：
--
作者：
Chen Zhen;Zhong Li;Liu Xiangdong;Cong Binglong
针对刚性航天器的姿态机动问题，提出了一种自适应模糊PD+控制器。该控制器根据机动过程中的姿态误差和角速度误差在线调整PD+姿态控制器的增益。因此，可以同时实现快速响应和避免执行器饱和。此外，基于李亚普诺夫理论设计了自适应机制，以保证闭环系统的稳定性。为了使闭环系统在执行器饱和的约束下获得良好的性能，基于遗传算法对控制器参数进行了优化。仿真结果表明，自适应模糊PD+控制器的暂态性能和对参数不确定性和环境扰动的鲁棒性优于固定PD+控制器。
In this paper, an adaptive fuzzy PD+ controller is proposed for the attitude maneuver of rigid spacecraft. The novel controller adjusts the gains of the PD+ attitude controller online according to attitude errors and angular velocity errors during the maneuver procedure. Therefore, quick response and avoidance of actuator saturation can be achieved simultaneously. Furthermore, the adaptation mechanism is designed, based on Lyapunov theory, to guarantee the stability of the closed‐loop system. To achieve good performance of the closed‐loop system under the constraint of actuator saturation, controller parameter optimization is developed on the basis of a genetic algorithm. Simulation results show that the transient performance and robustness against parametric uncertainty and environmental disturbance of the adaptive fuzzy PD+ controller are better than those of a constant PD+ controller.