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Journal of Zhejiang University SCIENCE C 1998 Vol.-1 No.-1 P.

http://doi.org/10.1631/FITEE.2300796


An improved error-based observer on repetitive control strategy in electro-optical tracking system


Author(s):  Mai TANG, Wenqiang XIA, Jiuqiang DENG, Yao MAO

Affiliation(s):  National Key Laboratory of Optical Field Manipulation Science and Technology, Chinese Academy of Sciences, Chengdu 610209, China; more

Corresponding email(s):   tangmai22@mails.ucas.ac.cn, xiawenqiang20@mails.ucas.ac.cn, jqdeng@ioe.ac.cn, maoyao@ioe.ac.cn

Key Words:  Disturbance suppression, Error-based observer, Repetitive control, Special frequency point, Electro-optical tracking system


Mai TANG, Wenqiang XIA, Jiuqiang DENG, Yao MAO. An improved error-based observer on repetitive control strategy in electro-optical tracking system[J]. Frontiers of Information Technology & Electronic Engineering, 1998, -1(-1): .

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Abstract: 
electro-optical tracking systems have been widely utilized in the cutting-edge domains of free space environment detection and communication, owing to their exceptional performance. However, external disturbances often significantly impact the working accuracy of these systems. As their scope of application continues to broaden, increasingly complex operating conditions are seen introducing more intricate environments and disturbances. This paper introduces an enhanced error-based observer composite control structure, rooted in the repetitive control strategy, tailored for two types of complex disturbances: periodic harmonic disturbance and narrow-band peak periodic disturbance. This structure not only ensures the system’s stability but also suppresses periodic disturbances across multiple frequencies, addressing the challenge that current disturbance-suppression methods struggle face in mitigating complex periodic disturbances effectively. Moreover, it provides the necessary proofs and establishes an experimental platform for the electro-optical system to demonstrate the efficacy and reliability of the proposed control methods under various conditions.

光电跟踪系统中基于重复控制策略改进的误差观测器

唐迈1,2,3,4,夏文强1,2,3,4,邓久强1,2,3,4,毛耀1,2,3,4
1中国科学院光场调控科学技术全国重点实验室,中国成都市,610209
2中国科学院光学工程重点实验室,中国成都市,610209
3中国科学院光电技术研究所,中国成都市,610209
4中国科学院大学,中国北京市,101408
摘要:光电跟踪系统因其出色的工作性能,已被广泛应用于自由空间环境探测及通信等前沿领域。外界扰动往往会很大程度影响光电跟踪系统的工作精度,随着其应用领域不断拓宽,更复杂的工作条件也带来更复杂的工作环境和扰动情况。本文针对周期性谐波扰动和窄带尖峰周期性扰动两类复杂的扰动情况,提出一种基于重复控制策略改进的误差扰动观测器复合控制结构。这种结构在保证系统稳定性的同时,实现了多重频率处的周期性扰动抑制,弥补了现有扰动抑制方法难以对复杂周期性扰动进行抑制的问题。此外,给出相关证明,并搭建光电系统实验平台,验证了上述控制方法在不同情况下的有效性和可靠性。

关键词:扰动抑制;误差观测器;重复控制;光电跟踪系统;特殊频率点

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