Disturbance Identification and Adaptive Compensation Method in Optical Target Tracking System

External disturbance suppression is critical in high-precision optical target tracking systems. Although the traditional disturbance observation compensator (DOBC) method can improve anti-disturbance performance, its fixed structure limits its ability to handle variable disturbances. To improve the...

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Bibliographic Details
Published in:IEEE photonics journal 2024-02, Vol.16 (1), p.1-9
Main Authors: Xia, Wenqiang, Deng, Jiuqiang, Nie, Kang, Mao, Yao, Chen, Xinglong
Format: Article
Language:English
Subjects:
adaptive compensation
Adaptive optics
Closed loops
Compensation
Compensators
Design parameters
disturbance identification
Disturbances
Frequency-domain analysis
Narrowband
Notch filters
Optical feedback
Optical sensors
Optical target tracking system
Parameter identification
Peak frequency
Stability
Target tracking
time-varying disturbance
Time-varying systems
Tracking systems
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Summary:External disturbance suppression is critical in high-precision optical target tracking systems. Although the traditional disturbance observation compensator (DOBC) method can improve anti-disturbance performance, its fixed structure limits its ability to handle variable disturbances. To improve the suppression ability of time-varying narrowband disturbances, we propose a disturbance identification and adaptive compensation method based on DOBC (DIAC-DOBC). The peak frequency of the observed disturbance can be obtained with high precision using AR parameter model identification. To design the Q filter, an improved notch filter structure is proposed, with parameters that can be adjusted automatically and a stronger suppression ability. Furthermore, the conditions for closed-loop stability and robust stability are detailed. Finally, the method's effectiveness is demonstrated through simulation and actual experimentation on an optical target tracking system with disturbances.
ISSN:1943-0655
1943-0647
DOI:10.1109/JPHOT.2023.3337408