Jiali PENG, Ping RUAN, Youjin XIE, Zhiguo LI, Jiahao WANG, Jingyu HAN. Dynamic Characteristics Analysis of Space Electro-optical Tracking and Pointing Turntable[J]. Acta Photonica Sinica, 2023, 52(7): 0712002
- Acta Photonica Sinica
- Vol. 52, Issue 7, 0712002 (2023)
Fig. 1. Overall structure of space electro-optical tracking and pointing turntable
Fig. 2. Mechanical model of the Bushing element
Fig. 3. Shafting structure design section
Fig. 4. Relative displacement of inner-outer rings under the combined action of radial，axial and moment loads
Fig. 5. Mechanical model of the locking devices
Fig. 6. Bushing element of shafting
Fig. 7. Bushing element of locking devices
Fig. 8. Finite element model of space electro-optical tracking and pointing turntable
Fig. 9. Modal test of space electro-optical tracking and pointing turntable
Fig. 10. The first six mode shapes of modal test
Fig. 11. The first six mode shapes by modal test
Fig. 12. Measurement points in swept-sine vibration test
Fig. 13. 0.2 g swept-sine vibration test curve
Fig. 14. The response curves comparison of test with simulation
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Table 1. Bearing stiffness calculation results
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Table 2. The first six natural frequencies of modal test
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Table 3. Modal test setting
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Table 4. Stiffness identification of pitching shafting
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Table 5. Stiffness identification of azimuthal shafting
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Table 6. Stiffness identification of pitching locking devices
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Table 7. Stiffness identification of azimuth locking devices
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Table 8. The stiffness coefficient of each Bushing elements
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Table 9. Comparison of nature frequency between simulation and modal test
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Table 10. Test condition of 0.2 g swept-sine vibration test
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Table 11. 0.2 g swept-sine vibration test results and simulation errors
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Table 12. Modal damping coefficient identification
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