摘要
针对商用小卫星平台的高性能、高可靠、低成本的需求,开展了卫星姿控反作用飞轮控制系统设计。针对飞轮控制性能受轴承摩擦、模型不确定度以及霍尔传感器测速精度差等因素影响的问题,采用了线性扩张状态观测器(LESO)对飞轮转子速度、扰动力矩进行实时估计、实时补偿,使飞轮控制性能得到改善。开展了反作用飞轮控制系统高可靠性设计技术研究,提出了商用卫星飞轮产品高可靠、低成本设计方法。实验结果显示,采用LESO补偿算法后,速度稳态精度(3σ)约0.0286 r/min,输出力矩从1.67变为3 mN·m,RMS误差从1.3377降为0.0786 mN·m,且不受转速变化影响。所设计的反作用飞轮控制系统具有良好的控制性能和可靠性,对商用卫星姿控反作用飞轮的低成本设计具有积极意义。
According to the high performance,high reliability and low cost requirements of commercial small satellite platforms,the design of satellite attitude control reaction flywheel control system was carried out.Firstly,aiming at that the flywheel control performance is affected by factors such as bearing friction,model uncertainty and poor accuracy of Hall sensor,the linear extended state observer(LESO)is used to estimate the flywheel rotor speed and disturbance torque in real time and compensate in real time for improving flywheel control performance.Secondly,the research on high reliability design technology of reaction flywheel control system is carried out,and a high reliability and low cost design method for commercial satellite flywheel products is proposed.The experimental results show that:with the use of the LESO compensation algorithm,the steady state accuracy is about 0.0286 r/min(3σ).The output torque is changed from 1.67 to 3 mN·m,and the RMS error is reduced from 1.3377 to 0.0786 mN·m.And the RMS error is not affected by the change of the rotational speed.In summary,the designed flywheel control system has good control performance and reliability,and has positive significance for the low-cost design of commercial satellite attitude control reaction flywheel.
作者
孔令波
陈茂胜
曲云昭
胡冰
于跃
邹吉炜
Kong Lingbo;Chen Maosheng;Qu Yunzhao;Hu Bing;Yu Yue;Zou Jiwei(Chang Guang Satellite Technology Co.,Ltd,Changchun 130000,China;University of Chinese Academy of Sciences Changchun Institute of Optics,Fine Mechanics and Physics,Changchun 130033,China;University of Chinese Academy of Sciences,Beijing 100049,China)
出处
《电子测量与仪器学报》
CSCD
北大核心
2019年第12期167-172,共6页
Journal of Electronic Measurement and Instrumentation
基金
青年人才托举工程(2017QNRC001)资助项目。
