Junwei Song, Xiaoping Tao, Minglin Xu, Xun Wang. Design of a High-Precision Repeatable Secondary Mirror Deployment Mechanism for Space Cameras[J]. Laser & Optoelectronics Progress, 2024, 61(5): 0522003
- Laser & Optoelectronics Progress
- Vol. 61, Issue 5, 0522003 (2024)
Fig. 1. Optical system optical path diagram
Fig. 2. The distribution of the components
Fig. 3. Geometric diagram
Fig. 4. Secondary mirror deployment mechanism model
Fig. 5. Calculation diagram of micro-displacement synthesis method
Fig. 6. The equivalent model diagrams of the deployed mechanism. (a) Folded state; (b) intermediate state; (c) unfolded state
Fig. 7. Finite element model of the secondary unfolded mechanism
Fig. 8. Deformation-frequency curve along each axis under X-oriented acceleration
Fig. 9. Deformation-frequency curve along each axis under Y-oriented acceleration
Fig. 10. Deformation-frequency curve along each axis under Z-oriented acceleration
Fig. 11. Mockup unfolded state
Fig. 12. Mockup collapsed state
Fig. 13. Locking device
Fig. 14. Repeat precision experiments
Fig. 15. Line plot of the experimental data
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Table 1. Optical system parameters
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Table 2. Secondary mirror tolerance allocation results
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Table 3. Material parameter
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Table 4. Theoretical error of secondary mirror deployment mechanism
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Table 5. Ultrasound motor parameters
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Table 6. The first six natural frequencies and mode shapes
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Table 7. Acceleration in each frequency band［17］
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Table 8. The amount of change in each degree of freedom
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