Electro-Optic Technology Application, Volume. 40, Issue 3, 45(2025)

Effective Bandwidth Testing of Pointing Mechanism Control System Based on Correction Network-PID

JIN Dairan1, LYU Furui1,2, CHEN Baogang1, and LIU Yongkai1
Author Affiliations
  • 1Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, China
  • 2University of Chinese Academy of Sciences, Beijing, China
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    To improve the tracking performance and ensure the designed effective bandwidth of a two-dimensional pointing mechanism, a composite control system integrating correction network and proportional-integral-differential (PID) is developed based on classical three-loop control theory, with its effective tracking bandwidth experimentally validated. At first, the actuator configuration and driving control logic of the pointing mechanism are elaborated on, and then, the system mathematical model is established and the control principle is analyzed, obtaining key performance parameters through simulation. In the experimental section, the testing platform configuration and methodology are introduced. Testing results demonstrate that the correction network-optimized PID control achieves high-precision fixed-point control within 0.3″ and significantly enhances the image closed-loop control bandwidth beyond 2.5 Hz, meeting all design specifications.

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    JIN Dairan, LYU Furui, CHEN Baogang, LIU Yongkai. Effective Bandwidth Testing of Pointing Mechanism Control System Based on Correction Network-PID[J]. Electro-Optic Technology Application, 2025, 40(3): 45

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    Paper Information

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    Received: Apr. 7, 2025

    Accepted: Sep. 5, 2025

    Published Online: Sep. 5, 2025

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