Research on Bandwidth Improvement of Fine Tracking Control System in Space Laser Communication

doi:10.3390/photonics10111179

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	Research on Bandwidth Improvement of Fine Tracking Control System in Space Laser Communication
	F. R. Lv, Y. K. Liu, S. J. Gao, H. Wu and F. Guo
	2023
发表期刊	Photonics
卷号	10 期号:11 页码:16
摘要	Piezoelectric fast steering mirror (PZT FSM) is the core component of the fine tracking system for space laser communication, and its actuator is a piezoelectric ceramic. Consequently, there is a hysteretic nonlinear disturbance throughout the entire range of the FSM's steering. To enhance the fine tracking system's performance, this paper innovatively analyzes and verifies the effect of the PZT FSM hysteresis characteristics on the error suppression bandwidth of the fine tracking system. Firstly, the rate-dependent hysteresis model is established by serially connecting the Prandtl-Ishlinskii (P-I) model with the dynamic linear mode. The inverse model is designed as a feedforward controller, followed by the conduction of open-loop feedforward compensation experiments. Subsequently, we propose a compound control method based on the rate-dependent hysteresis mode and conduct a simulation analysis. Finally, the experimental platform for the fine tracking system is set up, and the optimization effect of compensating for hysteresis nonlinearity on the fine tracking system is verified. The experimental results show that the nonlinearity of the PZT FSM is improved by 30% in the middle- and high-frequency ranges, and the error suppression bandwidth of the fine tracking system is improved by 41.7%. This effectively enhances the fine tracking system's error suppression capability.
DOI	10.3390/photonics10111179
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收录类别	sci
语种	英语
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文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/67751
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	F. R. Lv, Y. K. Liu, S. J. Gao, H. Wu and F. Guo. Research on Bandwidth Improvement of Fine Tracking Control System in Space Laser Communication[J]. Photonics,2023,10(11):16.
APA	F. R. Lv, Y. K. Liu, S. J. Gao, H. Wu and F. Guo.(2023).Research on Bandwidth Improvement of Fine Tracking Control System in Space Laser Communication.Photonics,10(11),16.
MLA	F. R. Lv, Y. K. Liu, S. J. Gao, H. Wu and F. Guo."Research on Bandwidth Improvement of Fine Tracking Control System in Space Laser Communication".Photonics 10.11(2023):16.

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