基于三维视觉方法的柔板型面动态测量方法及系统
By arranging annular coding points on the outer wall of the flexible plate for self-calibration and coordinate transformation, the problem of measurement accuracy attenuation of the flexible wall nozzle under vibration environment is solved, realizing high-precision, full-range dynamic measurement of the flexible plate profile, which is suitable for the measurement of the flexible plate profile in wind tunnel tests.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHINA AERODYNAMIC RES & DEV CENT EQUIP DESIGN & TESTING TECH INST
- Filing Date
- 2026-03-24
- Publication Date
- 2026-07-17
AI Technical Summary
In the existing technology, the measurement of the outer wall deformation of flexible wall nozzles has problems such as sensor detachment, large error, high system complexity, and attenuation of calibration accuracy under vibration environment, making it difficult to achieve high-precision, full-domain, real-time dynamic measurement of the flexible plate profile.
By employing a 3D vision-based approach, circular coded points are arranged on the outer wall of the flexible plate. These points are then used for self-calibration and coordinate transformation. Combined with polar geometry constraints and bundle adjustment optimization, unambiguous matching and high-precision stitching of a multi-camera system are achieved, eliminating error accumulation and adapting to vibration environments.
It achieves high-precision, full-range surface measurement of the outer wall of flexible plate under vibration environment, reduces the difficulty of system maintenance, and improves the stability and accuracy of measurement. It is suitable for flexible plate structures on the meter scale.
Smart Images
Figure CN121898733B_ABST