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首页> 外文期刊>Journal of Research of the National Institute of Standards and Technology >ASME B89.4.19 Performance Evaluation Tests and Geometric Misalignments in Laser Trackers
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ASME B89.4.19 Performance Evaluation Tests and Geometric Misalignments in Laser Trackers

机译：ASME B89.4.19激光跟踪仪中的性能评估测试和几何未对准

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摘要

Small and unintended offsets, tilts, and eccentricity of the mechanical and optical components in laser trackers introduce systematic errors in the measured spherical coordinates (angles and range readings) and possibly in the calculated lengths of reference artifacts. It is desirable that the tests described in the ASME B89.4.19 Standard [1] be sensitive to these geometric misalignments so that any resulting systematic errors are identified during performance evaluation. In this paper, we present some analysis, using error models and numerical simulation, of the sensitivity of the length measurement system tests and two-face system tests in the B89.4.19 Standard to misalignments in laser trackers. We highlight key attributes of the testing strategy adopted in the Standard and propose new length measurement system tests that demonstrate improved sensitivity to some misalignments. Experimental results with a tracker that is not properly error corrected for the effects of the misalignments validate claims regarding the proposed new length tests.
机译：激光跟踪仪中机械和光学组件的微小和意想不到的偏移，倾斜以及偏心率会在测得的球坐标（角度和范围读数）以及计算出的参考伪影长度中引入系统误差。希望ASME B89.4.19标准[1]中描述的测试对这些几何不对准敏感，以便在性能评估过程中识别出任何由此引起的系统误差。在本文中，我们使用误差模型和数值模拟对B89.4.19标准中长度测量系统测试和双面系统测试对激光跟踪仪未对准的敏感性进行了分析。我们重点介绍了标准中采用的测试策略的关键属性，并提出了新的长度测量系统测试，以证明对某些未对准的灵敏度有所提高。跟踪器的实验结果未针对错位的影响进行正确的错误校正，从而验证了有关建议的新长度测试的要求。

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