Infrared and Laser Engineering, Volume. 50, Issue 4, 20200296(2021)

Periodic disturbance suppression method in position domain for rotating telescope

Jing Li... Ai Zhang and Zhe Lin |Show fewer author(s)
Author Affiliations
  • Beijing Institute of Space Mechanics & Electricity, Beijing 100094, China
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    Figures & Tables(11)
    Three-dimensional diagram of the telescope scanning system
    Model of the telescope speed loop
    Output waveform of speed and the analysis of FFT
    Disturbance torque acquisition system
    Analysis of FFT and fitting curve of current of quadrature axis
    [in Chinese]
    Structure diagram of the system after compensation
    Experimental platform of rotating telescope scanning system
    Experimental results before and after compensation
    • Table 1. [in Chinese]

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      Table 1. [in Chinese]

      Command velocity/(°)·s−1Temporal frequency/HzSpatial frequency/(°)
      251.7090.06836
      503.2960.06592
      755.0050.06674
      1006.7140.06714
      1258.3010.06641
      15010.010.06674
    • Table 2. [in Chinese]

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      Table 2. [in Chinese]

      Speed command/(°)·s−1Speed fluctuationSpeed variance
      Before compensation/(°)·s−1After compensation/(°)·s−1DecreaseBefore compensation/(°)·s−1After compensation/(°)·s−1Decrease
      25−0.290-0.294−0.177-0.15639%-47%0.01520.003577%
      50−0.275-0.253−0.165-0.15937%-40%0.0120.003372%
      75−0.183-0.203−0.123-0.16021%-32%0.00530.001866%
      100−0.293-0.203−0.217-0.16917%-27%0.00670.003942%
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    Jing Li, Ai Zhang, Zhe Lin. Periodic disturbance suppression method in position domain for rotating telescope[J]. Infrared and Laser Engineering, 2021, 50(4): 20200296

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    Paper Information

    Category: Optical design

    Received: Aug. 5, 2020

    Accepted: --

    Published Online: Jul. 30, 2021

    The Author Email:

    DOI:10.3788/IRLA20200296

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