Measurement and compensation of deformations in coordinate measurement arm

The paper is dealing with Coordinate Measuring Arm (CMA) accuracy. Error sources contributing to the measurement uncertainty of CMAs are summarized. In sequence, the focus is on elastic deformations as one of the main error sources. A novel system is presented, developed specifically for measuring l...

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Bibliographic Details
Main Authors: Vrhovec, Miha, Kovač, Igor, Munih, Marko
Format: Conference Proceeding
Language:English
Subjects:
Acceleration
Force
Force measurement
Joints
Measurement by laser beam
Measurement uncertainty
Optical sensors
Citations: Items that cite this one
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Summary:The paper is dealing with Coordinate Measuring Arm (CMA) accuracy. Error sources contributing to the measurement uncertainty of CMAs are summarized. In sequence, the focus is on elastic deformations as one of the main error sources. A novel system is presented, developed specifically for measuring link deflections. A detailed evaluation of the system was performed. The results confirmed suitability of the system, which was subsequently mounted on a CMA segment for measurements of 1. external force influence on segment deflection, 2. dynamic measurements of link deflection and 3. compensation of CMA deformations. Vertical deformation in the segment was measured at 30 μm, the dynamic deformations were measured at 40 μm, while the improvement with compensation was found in order of 11% to 16%.
DOI:10.1109/ISOT.2010.5687319