摘要
音圈电机驱动快反镜是高精度光电跟踪系统中的重要组成部分。在运动平台光电跟踪系统中,快反镜系统所受各种内外干扰将更加复杂剧烈,传统的被动干扰抑制方法以及把干扰当作集总干扰处理的主动干扰抑制方法将不足以保证高精度的视轴稳定。因此本文提出一种谐波干扰观测与扩张状态观测结合的滑模复合分层干扰观测补偿控制策略。首先利用谐波干扰观测器对具备先验频率信息的谐波干扰进行观测,然后采用扩张状态观测器对其他未知干扰进行观测,最后基于观测的多源干扰,采用具有抗干扰能力的滑模非线性方法设计复合控制器,最大程度地对系统所受多源干扰进行抑制。实验表明,本文提出的滑模复合分层干扰观测补偿方法与传统的单一干扰观测补偿方法相比,能显著提升快反镜的视轴稳定精度。
The voice coil motor-driven fast steering mirror is an important part of a high-precision photoelectric tracking system.In the photoelectric tracking system of the moving platform,the fast steering mirror system will suffer more complex and intense internal and external interference.The traditional passive interference suppression methods and the active interference suppression methods that treat the interference as lumped interference will not be enough to ensure the high-precision stability of boresight.Therefore,this paper proposes a sliding mode composite layered interference observation and compensation control strategy which combines harmonic interference observation and extended state observation.Firstly,the harmonic disturbance observer is used to observe the harmonic disturbance with a priori frequency information.Then the extended state observer is used to observe other unknown disturbances.Finally,based on the observed multi-source interference,the sliding mode nonlinear method with anti-interference ability is used to design a composite controller to maximize the suppression of multi-source disturbances suffered by the system.The experiment shows that the sliding mode composite layered interference observation compensation method proposed in this paper can significantly improve the LOS stability accuracy of the fast steering mirror compared with the traditional single interference observation compensation method.
作者
罗勇
刘凯凯
杨帆
闻心怡
黄永梅
郭珊珊
任戈
李涛
Luo Yong;Liu Kaikai;Yang Fan;Wen Xinyi;Huang Yongmei;Guo Shanshan;Ren Ge;Li Tao(School of Automation,Nanjing University of Information Science and Technology,Nanjing,Jiangsu 210044,China;Institute of Optics and Electronics,Chinese Academy of Sciences,Chengdu,Sichuan 610209,China;3719 Research Institute of China Shipbuilding Industry Corporation,Wuhan,Hubei 430064,China;College of Information Science and Engineering,Northeastern University,Shenyang,Liaoning 110167,China)
出处
《光电工程》
CAS
CSCD
北大核心
2023年第4期95-103,共9页
Opto-Electronic Engineering
基金
四川省自然科学基金资助项目(2023NSFSC1438)。
关键词
快反镜
视轴稳定
复合分层
谐波干扰观测器
扩张状态观测器
滑模
fast steering mirror
LOS stability
composite layered
harmonic disturbance observer
extended state observer
sliding mode
