• Infrared and Laser Engineering
  • Vol. 52, Issue 12, 20230336 (2023)
Xiaoming Li1,2, Minghang Guo1,2, Yingze Liu1,2, Jialong Yao2..., Libiao Wang2, Yunchong Dong1,2 and Xilai Chen1,2|Show fewer author(s)
Author Affiliations
  • 1College of mechanical and Electronic Engineering, Changchun University of Science and Technology, Changchun 130022, China
  • 2National and Local Joint Engineering Research Center of Space and Optoelectronics Technology, Changchun University of Science and Technology, Changchun 130022, China
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    DOI: 10.3788/IRLA20230336 Cite this Article
    Xiaoming Li, Minghang Guo, Yingze Liu, Jialong Yao, Libiao Wang, Yunchong Dong, Xilai Chen. Laser communication flat back servo pendulum mirror support structure optimization design[J]. Infrared and Laser Engineering, 2023, 52(12): 20230336 Copy Citation Text show less
    General layout of single pendulum mirror servo turntable
    Fig. 1. General layout of single pendulum mirror servo turntable
    Plane shape of pendulum mirror
    Fig. 2. Plane shape of pendulum mirror
    Pendulum mirror-shaped cloud map of standard Earth gravity
    Fig. 3. Pendulum mirror-shaped cloud map of standard Earth gravity
    Schematic diagram of flexible hinge structure. (a) Schematic diagram of hinge 1; (b) Schematic diagram of hinge 2
    Fig. 4. Schematic diagram of flexible hinge structure. (a) Schematic diagram of hinge 1; (b) Schematic diagram of hinge 2
    Schematic diagram of the main parameters of the flexible hinge structure
    Fig. 5. Schematic diagram of the main parameters of the flexible hinge structure
    First-order modal cloud of the pendulum mirror assembly
    Fig. 6. First-order modal cloud of the pendulum mirror assembly
    Pendulum mirror 5 ℃ temperature rise (fall) and standard earth gravity effect of the mirror surface surface shape cloud map
    Fig. 7. Pendulum mirror 5 ℃ temperature rise (fall) and standard earth gravity effect of the mirror surface surface shape cloud map
    Physical drawing of the pendulum mirror assembly and the whole machine assembly diagram
    Fig. 8. Physical drawing of the pendulum mirror assembly and the whole machine assembly diagram
    System for pendulum mirror assembly inspection
    Fig. 9. System for pendulum mirror assembly inspection
    Results of pendulum mirror assembly surface shape testing at different temperatures
    Fig. 10. Results of pendulum mirror assembly surface shape testing at different temperatures
    Sweep sine response curve under Z vibration
    Fig. 11. Sweep sine response curve under Z vibration
    PartMaterialE/GPa ρ/g·cm−3α/℃ k/W∙(M∙K)−3ν
    MirrorZerodur912.530.051.640.24
    SupportTC41094.448.97.80.31
    Table 1. Material properties of reflector components
    LevelFactors
    α/(°) L1/mm L2/mm
    11062014
    21072115
    31082216
    41092317
    Table 2. Parameter level table of the position of the bonding point of the pendulum mirror
    No.α/(°) L1/mm L2/mm V/nm
    110620140.861
    210621150.804
    310622160.877
    410623171.067
    510720150.851
    610721140.660
    710722171.070
    810723160.863
    910820160.895
    1010821170.905
    1110822141.059
    1210823151.053
    1310920171.117
    1410921161.033
    1510922141.198
    1610923151.289
    Table 3. Orthogonal test scheme of the position of the bonding point of the pendulum mirror
    FactorsABC
    α/(°) L1/mm L2/mm
    N1 0.9020.9310.945
    N2 0.8610.8510.999
    N3 0.9781.0510.917
    N4 1.1591.0681.039
    R0.2980.2170.122
    Table 4. Range analysis of factors of the position of the bonding point of the pendulum mirror
    LevelFactors
    a/mm h/mm b/mm r/mm s/mm t/mm
    1122.416.522.48
    2132.8172.52.89
    3143.217.533.210
    4153.6183.53.611
    516418.54412
    Table 5. Parameter level of flexible support structure
    No.a/mm h/mm b/mm r/mm s/mm t/mm P/nm
    1122.416.522.4824.03
    2122.8172.52.8933.04
    3123.217.533.21044.58
    4123.6183.53.61159.03
    512418.5441270.99
    6132.41733.61241.27
    7132.817.53.54838.35
    8133.21842.4922.70
    9133.618.522.81033.63
    1013416.52.53.21147.07
    11142.417.542.81120.58
    12142.81823.21230.08
    13143.218.52.53.6825.17
    14143.616.534944.48
    15144173.52.41024.02
    16152.4182.541029.49
    17152.818.532.41116.25
    18153.216.53.52.81222.05
    19153.61743.2816.60
    2015417.523.6930.25
    21162.418.543.2912.01
    22162.816.523.61020.19
    23163.2172.541132.46
    24163.617.532.41214.84
    25164183.52.8810.09
    Table 6. Orthogonal test scheme of flexible support structure
    FactorsABCDEF
    a/mm h/mm b/mm r/mm s/mm t/mm
    N1 46.3325.4831.6427.7020.3722.85
    N2 36.6027.5829.4833.4523.8828.57
    N3 28.8729.2729.7232.2830.0730.38
    N4 22.9333.7230.2830.7135.1835.08
    N5 17.9236.4831.6128.5843.1535.85
    R28.41112.165.7522.7813
    Table 7. Range analysis of factors of flexible support structure
    OrderFz/Hz Mode of vibration
    1446.66Pendulum mirror translates along the x-axis
    21137.7Pendulum mirror translates along the y-axis
    31248.2Pendulum mirror translates along the z-axis
    41282.7Pendulum mirror rotates around x-axis
    51361.1Pendulum mirror rotates around z-axis
    62134.1Pendulum mirror rotates around y-axis
    Table 8. Results of modal analysis of pendulum mirror assembly
    Load case directionTemperature riseTemperature reduction
    PVRMSPVRMS
    Xλ/16.34 λ/92.13 λ/16.75 λ/95.13
    Yλ/17.23 λ/94.97 λ/17.47 λ/95.43
    Zλ/16.55 λ/83.28 λ/19.88 λ/101
    Table 9. Analysis results of 5 ℃ temperature rise (fall) and standard earth gravity under the pendulum mirror surface shape accuracy (Unit: nm)
    Temperature/°CPVRMS
    15λ/5.41 λ/45.34
    20λ/5.49 λ/45.71
    25λ/5.10 λ/43.28
    Table 10. Results of pendulum mirror assembly face shape test (Unit: nm)
    Xiaoming Li, Minghang Guo, Yingze Liu, Jialong Yao, Libiao Wang, Yunchong Dong, Xilai Chen. Laser communication flat back servo pendulum mirror support structure optimization design[J]. Infrared and Laser Engineering, 2023, 52(12): 20230336
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