一种基于攻角机构与不动特征点的双目系统风洞坐标系标定法
The binocular system wind tunnel coordinate system calibration method using angle-of-attack mechanism and stationary feature points solves the problems of wind tunnel coordinate system calibration accuracy and cost, and realizes efficient and low-cost wind tunnel coordinate system calibration, which is suitable for large-size continuous wind tunnels.
CN120992153BActive Publication Date: 2026-07-17XI AN JIAOTONG UNIV +1
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- XI AN JIAOTONG UNIV
- Filing Date
- 2025-09-30
- Publication Date
- 2026-07-17
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Figure CN120992153B_ABST
Abstract
发明公开一种基于攻角机构与不动特征点的双目系统风洞坐标系标定法，属于空气动力学试验测量与视觉标定技术领域，包括在风洞内布置双目系统并通过十字标尺标定双目系统内外参数；在双目系统视野重叠的风洞壁表面及模型表面布置若干圆形特征标记点；利用攻角机构带动模型分别做单滚转运动和单俯仰运动，以此标定风洞坐标系轴、轴向量，并通过轴与轴叉乘得到风洞坐标系轴向量，相机测量坐标系与风洞坐标系配准实现双目系统风洞坐标系标定，双目系统重建不动点在风洞坐标系下的三维坐标；针对后续相机重新标定的情况，依据不动点三维坐标，采用后方交会实现风洞坐标系重新标定。本发明满足双目系统的测量坐标系与风洞坐标系高精度及高效对齐要求。
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