Opto-Electronic Engineering, Volume. 52, Issue 3, 240305(2025)

Wide-band disturbance rejection technique of dual observer for an inertially stabilized platform

Qihui Bian1,2,3,4, Qingqing Miao1,2,3,4, Tao Tang1,2,3,4、*, and Haotong Ma1,2,3,4
Author Affiliations
  • 1National Key Laboratory of Optical Field Manipulation Science and Technology, Chinese Academy of Sciences, Chengdu, Sichuan 610209, China
  • 2Key Laboratory of Optical Engineering, Chinese Academy of Sciences, Chengdu, Sichuan 610209, China
  • 3Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu, Sichuan 610209, China
  • 4University of Chinese Academy of Sciences, Beijing 100049, China
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    Figures & Tables(12)
    The inertially stabilized platform schematic diagram
    Error observer block diagram
    ADOB in velocity feedback
    Saturated ADOB block diagram
    Bode plots of Q with different bandwidths and corresponding 1-Q
    Dual observer block diagram
    Disturbance rejection performance of different observers' Bode diagram
    Experimental platform
    Angular velocity error of different methods under single-frequency disturbance. (a) 1 Hz; (b) 3 Hz; (c) 7 Hz; (d) 15 Hz
    Angular velocity error of different methods under mixed-frequency disturbance
    Angular velocity error of dual observer with different parameters
    • Table 1. Closed-loop error peak for different single-frequency disturbance (Unit: (°)/s)

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      View in Article

      Table 1. Closed-loop error peak for different single-frequency disturbance (Unit: (°)/s)

      Disturbance frequency/HzVelEobEob+Sadob
      11.170.670.48
      31.580.980.77
      71.731.541.26
      151.661.921.52
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    Qihui Bian, Qingqing Miao, Tao Tang, Haotong Ma. Wide-band disturbance rejection technique of dual observer for an inertially stabilized platform[J]. Opto-Electronic Engineering, 2025, 52(3): 240305

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    Paper Information

    Category: Article

    Received: Dec. 23, 2024

    Accepted: Feb. 11, 2025

    Published Online: May. 22, 2025

    The Author Email: Tao Tang (唐涛)

    DOI:10.12086/oee.2025.240305

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