• Infrared and Laser Engineering
  • Vol. 50, Issue 4, 20200296 (2021)
Jing Li, Ai Zhang, and Zhe Lin
Author Affiliations
  • Beijing Institute of Space Mechanics & Electricity, Beijing 100094, China
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    DOI: 10.3788/IRLA20200296 Cite this Article
    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 Copy Citation Text show less
    Three-dimensional diagram of the telescope scanning system
    Fig. 1. Three-dimensional diagram of the telescope scanning system
    Model of the telescope speed loop
    Fig. 2. Model of the telescope speed loop
    Output waveform of speed and the analysis of FFT
    Fig. 3. Output waveform of speed and the analysis of FFT
    Disturbance torque acquisition system
    Fig. 4. Disturbance torque acquisition system
    Analysis of FFT and fitting curve of current of quadrature axis
    Fig. 5. Analysis of FFT and fitting curve of current of quadrature axis
    [in Chinese]
    Fig. 5. [in Chinese]
    Structure diagram of the system after compensation
    Fig. 6. Structure diagram of the system after compensation
    Experimental platform of rotating telescope scanning system
    Fig. 7. Experimental platform of rotating telescope scanning system
    Experimental results before and after compensation
    Fig. 8. Experimental results before and after compensation
    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 1. [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%
    Table 2. [in Chinese]
    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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