一种航天器主镜型面高精度地面光学测试系统和方法
By working together with truss components, sensing components, exciters, demodulators, and computers, and using Ko displacement theory and inverse finite element algorithm, high-precision morphological reconstruction of the spacecraft primary mirror structure was achieved. This solved the problem of low accuracy in existing measurement systems and improved the accuracy of displacement field measurements.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
- Filing Date
- 2025-01-03
- Publication Date
- 2026-07-17
AI Technical Summary
Existing measurement systems and methods cannot accurately reconstruct the structural morphology of spacecraft primary mirrors, and the accuracy of displacement field measurements is low, failing to meet the precision requirements of ultra-large-scale complex flexible spacecraft under extreme temperature changes, microgravity, and microvibration environments in space.
A high-precision ground-based optical testing system for the spacecraft primary mirror profile, consisting of a truss assembly, sensing assembly, exciter, demodulator, and computer, is used. The exciter applies excitation force, the sensing assembly collects strain signals, the demodulator demodulates the signals, and the computer uses Ko displacement theory algorithm and inverse finite element algorithm to perform displacement field inversion and morphological reconstruction.
It improved the accuracy of displacement field measurement, realized precise morphological reconstruction of the spacecraft primary mirror structure, avoided complex mechanical parameter calculation processes and calculation errors, and improved measurement accuracy.
Smart Images
Figure CN119915491B_ABST