概括
这项研究引入了一种新的两阶段自我校准光笔测量系统,通过解决标记错误来提高准确性. 该方法实现了探测器中心坐标和距离测量的高精度.
科学领域:
- 计量学 计量学 计量学
- 光学测量系统 光学测量系统
- 工程计量学 工程计量学
背景情况:
- 便携式轻笔测量技术在制造业和工业检查中至关重要.
- 现有系统由于标记点定位错误和探头中心位移而遭受准确性降低.
- 当前的校准方法往往需要专门的设备,如坐标测量机.
研究的目的:
- 为轻型笔系统提出一种新的两阶段自我校准方法.
- 通过减轻标记点定位错误和探头中心位移来提高测量准确度.
- 开发一种仅依靠基于图像的信息的校准技术.
主要方法:
- 一个双阶段的自我校准方法,结合了距离限制和几何优化.
- 阶段1:灵敏度分析和信任区域优化用于估计距离.
- 第二阶段:用几何约束来优化标记坐标的捆绑调整.
主要成果:
- 在X,Y和Z方向的探测器中心坐标上实现了50μm的重复性准确性.
- 对于标准部件,证明距离测量偏差小于70μm.
- 拟议的方法有效地利用基于图像的信息进行校准.
结论:
- 开发的两阶段自我校准方法显著提高了轻笔测量系统的准确性.
- 依赖基于图像的数据简化了校准过程,减少了对外部机械的需求.
- 该方法为提高工业和制造业计量学精度提供了实用解决方案.
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