卫星姿态控制系统故障重构观测器设计

发布时间：2018-04-17 03:24

本文选题：卫星姿态控制系统 + 故障重构　；参考：《宇航学报》2016年04期

【摘要】：对于卫星姿态控制系统,提出一种基于PD型学习观测器(Learning observer,LO)的系统故障重构方法。在P型LO的学习算法基础上引入测量输出估计误差的微分项,设计了一种PD型LO,估计卫星姿态角速度和姿态角的同时,快速精确重构卫星执行机构故障。给出了所提观测器的稳定性条件,并基于线性矩阵不等式技术提出一种系统化PD型LO设计方法。进一步,将所提PD型LO设计扩展用于卫星姿态敏感器故障的快速重构。最后,将所提方法应用于微小卫星推力器故障重构和陀螺故障重构,仿真结果校验了所提方法的有效性。
[Abstract]:For satellite attitude control system, a system fault reconstruction method based on PD learning observer is proposed.Based on the learning algorithm of P-type Lo, a PD type LOA is designed to estimate the satellite attitude angular velocity and attitude angle, and to reconstruct the fault of satellite actuator quickly and accurately.The stability conditions of the proposed observer are given, and a systematic PD type Lo design method based on linear matrix inequality (LMI) technique is proposed.Furthermore, the PD type Lo design is extended to quickly reconstruct the satellite attitude sensor fault.Finally, the proposed method is applied to micro satellite thruster fault reconstruction and gyroscope fault reconstruction. The simulation results verify the effectiveness of the proposed method.
【作者单位】：哈尔滨工业大学卫星技术研究所;深圳航天东方红海特卫星有限公司;小卫星技术国家地方联合工程研究中心;
【基金】：国家自然科学基金(61304237)
【分类号】：V448.22

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