Multi-Sensor 3-D Coordinate Measuring System

触觉探测三维坐标测量系统（CMS）可实现几何测量任务的通用性和灵活性以及所获得测量值的相对精度和可追溯性的无与伦比的结合，包括对特定任务测量不确定度的自动评估。对于特定任务的测量不确定度的自动评估，应用软件选项“虚拟坐标测量机”（VCMM）。在其第一个版本中，VCMM仅限于单点探测进行的测量。因此，测量点的数量受到限制，以获得可接受的测量时间。然而，特别是对于具有显著形状偏差的物体的测量，必须有大量的测量点才能正确分离形状、位置和尺寸偏差。如果需要对测量对象进行整体数字化，那么大量的测量点也是强制性的，例如在测量自由曲面时经常会出现这种情况。有两种方法旨在增加测量点的可能数量：一方面，VCMM的第二版（VCMM（v2）），现在是商业上可用的，也允许评估在扫描模式下进行的测量的特定任务的测量不确定性。在这种模式下，与单点探测相比，在一定时间内获取的测量点数量大大增加。另一方面，现代CMS通常是一种多传感器测量系统，也允许集成光学传感器。由于探测的非接触性质，光学传感器的应用显著减少了测量时间，或者说增加了在一定时间内获取的测量点的数量。然而，光学传感器测量点的任务特定不确定度的评估仍然是一个需要进一步研究的课题，尽管它在实践中是迫切需要的。这种现代化的多传感器CMS，包括软件选项VCMM（v2），是本提案的主题，应作为尺寸计量领域内进一步研究活动的基础进行采购。采购的CMS将主要用于必要的校准和参考测量，包括扫描测量点提取。它提供了一个高度准确的参考，以揭示评估测量方法，程序和策略的系统测量误差。此外，它还用于确定要研究的测量对象和系统的形状。此外，还计划将研发项目中创建的传感器系统和演示器（如触觉探测测量头和光学共焦距离传感器）集成在一起，以研究其性能。

A tactile probing 3-D-coordinate measuring system (CMS) allows for an till these days unequalled combination of universality and flexibility regarding the geometrical measuring tasks as well as the relative accuracy and traceability of the obtained measuring values, including an automatic evaluation of the task-specific measurement uncertainty. For the automatic evaluation of the task-specific measurement uncertainty, the software option “Virtual Coordinate Measuring Machine” (VCMM) is applied. In its first version, VCMM was limited to measurements conducted with single point probing. Therefore, the number of measuring points has been limited in order to attain an acceptable measuring time. However, especially for the measurement of objects with significant form deviations, a high number of measuring points is mandatory to enable the correct separation of form, position and dimensional deviations. A high number of measuring points is also mandatory if a holistic digitalization of the measuring object is needed, as is frequently the case when measuring free form surfaces, for instance. There have been two approaches aiming to increase the possible number of measuring points: On the one hand, the second version of VCMM (VCMM (v2)), which is now available commercially, also allows for the evaluation of the task-specific measurement uncertainties of measurements conducted in scanning-mode. In this mode, the number of measuring points taken within a certain period is greatly enhanced compared to single point probing. On the other hand, generally a modern CMS is a multi-sensor measuring system that also allows for the integration of optical sensors. Due to the non-contact nature of probing, the application of optical sensors significantly reduces the measurement time or rather enhances the number of measuring points taken within a certain period. Nevertheless, the evaluation of task-specific uncertainties of measurement points taken with optical sensors is still a topic that needs further research, although it is urgently needed in practice. Such a modern multi-sensor CMS, including the software option VCMM (v2) is the subject matter of this proposal and shall be procured as a basis for further research activities within the field of dimensional metrology.The CMS to be procured will be used in research primarily for the necessary calibrations and reference measurements, including scanning measurement point extraction. It offers a highly accurate reference to reveal systematic measurement errors of evaluated measurement methods, procedures and strategies. Furthermore, it serves to determine the shape of measuring objects and systems to be investigated. In addition, the integration of sensor systems and demonstrators created in the research and development projects, such as a tactile probing measuring head as well as an optical confocal distance sensor, is planned to investigate their performance.