Verification of a laser tracker with an indexed metrology platform

Acero, R.; Santolaria, Jorge; Pueo, M.; Brau, A.

doi:10.1007/s00170-015-7648-3

Cited by 7 publications

(4 citation statements)

References 20 publications

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“…Furthermore, it must be noted that the error obtained from the IMP calibration procedure is negligible for the purpose of use in the verification procedures of PCMMs, as are the results obtained in the estimation of the IMP distance measuring uncertainty. To support this conclusion, the results of a volumetric verification of an AACMM and a LT using the IMP and its optimal geometric features found in this work were used in [24] and [36]. The results confirmed the correct operation of the platform and of the mathematical geometric model and algorithms used in this calibration procedure.…”

Section: Discussionsupporting

confidence: 59%

“…To verify the appropriateness of the optimal geometric features found in the IMP calibration procedure for the purpose of verification procedures, a volumetric verification of an AACMM and a LT using the IMP based on the ASME B89.4.22 and ASME B89.4.19 norm was performed in [24,[35][36][37]. The volumetric verification test was selected because it was considered more demanding and representative of the real working conditions of the AACMM.…”

Section: Imp Calibration Resultsmentioning

confidence: 99%

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Mathematical calibration procedure of a capacitive sensor-based indexed metrology platform

Avila

Santolaria

Acero

et al. 2017

Meas. Sci. Technol.

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The demand for faster and more reliable measuring tasks for the control and quality assurance of modern production systems has created new challenges for the field of coordinate metrology. Thus, the search for new solutions in coordinate metrology systems and the need for the development of existing ones still persists. One example of such a system is the portable coordinate measuring machine (PCMM), the use of which in industry has considerably increased in recent years, mostly due to its flexibility for accomplishing in-line measuring tasks as well as its reduced cost and operational advantages compared to traditional coordinate measuring machines. Nevertheless, PCMMs have a significant drawback derived from the techniques applied in the verification and optimization procedures of their kinematic parameters. These techniques are based on the capture of data with the measuring instrument from a calibrated gauge object, fixed successively in various positions so that most of the instrument measuring volume is covered, which results in time-consuming, tedious and expensive verification and optimization procedures. In this work the mathematical calibration procedure of a capacitive sensor-based indexed metrology platform (IMP) is presented. This calibration procedure is based on the readings and geometric features of six capacitive sensors and their targets with nanometer resolution. The final goal of the IMP calibration procedure is to optimize the geometric features of the capacitive sensors and their targets in order to use the optimized data in the verification procedures of PCMMs.

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Section: Discussionsupporting

confidence: 59%

Section: Imp Calibration Resultsmentioning

confidence: 99%

Mathematical calibration procedure of a capacitive sensor-based indexed metrology platform

Avila

Santolaria

Acero

et al. 2017

Meas. Sci. Technol.

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“…Zhao et al integrated the laser tracker with a photogrammetric system to significantly improve tracking accuracy by establishing geometric constraints on common points and employing the graphic rectification method [13]. Acero et al introduced a platform that utilized capacitive sensors to validate laser trackers [14]. Feng et al proposed a scheme for laser trackers based on Abbe's principle to improve calibration accuracy in the short range [15].…”

Section: Introductionmentioning

confidence: 99%

Full-Range Static Method of Calibration for Laser Tracker

Hu,

Lv,

Xue

et al. 2023

Electronics

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This paper focuses on the challenge of the inability to accurately calibrate the static measurement of a laser tracker across the full scale. To address this issue, this paper proposes to add a hollow corner cube prism on a 50 m high-precision composite guide rail to achieve a double-range measurement of the laser tracker. Data analysis indicated that, in the 77 m identical-directional double-range measurement experiment, the maximum indication error of a single-beam laser interferometer was −29.5 μm, and that of a triple-beam laser interferometer was 14.6 μm, and the measurement indication error was obviously small when the Abbe error was eliminated. The single-point repeatability of the tracker was 0.9 μm. In the 50 m identical-directional verification experiment, the results of the direct measurement outperformed those of the double-range measurement, and the indication errors under standard conditions were −4.0 μm and −8.9 μm, respectively. Overall, the method used in the experiment satisfies the requirements of the laser tracker. In terms of the identical-directional measurement, the measurement uncertainty of the tracker indication error is U ≈ 1.0 μm + 0.2L (k = 2) L = (0~77 m). The proposed method also provides insights for length measurements using other high-precision measuring instruments.

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“…LLISI is widely used in the measuring field, particularly for the calibration of laser tracking three-dimensional (3D) coordinate measurement systems [3], ground-based laser scanners [4], laser interferometers [5], range finders, and ballbar-based measurement [6]. It can also be used for the calibration of linear displacement sensors, liquid level meters [7,8], invar baseline wires and other non-standard length devices.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Large-Length Indoor Standard Installation Based on Single Point Scanning

Sun

et al. 2021

Applied Sciences

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The large length indoor standard installation (LLISI) serves as a standard traceability system for large-scale measuring devices, and hence evaluating the accuracy of its measurements during motion is of great importance. A laser tracker, as a single-point scanning method with strong anti-interference ability and high accuracy for 3D measurement, can meet the measurement requirements of LLISI. In this study, a laser tracker was used to evaluate the accuracy of LLISI during motion based on the single-point scanning method. Fifteen measurement combinations including five measurement intervals and three measurement speeds were selected in the experiment and the results were compared with the measurement data of a laser interferometer. By analyzing the local movement speed of the ISS platform, the uncertainty in local measurement speed of the platform was evaluated. The results showed that the laser tracker has high measurement accuracy and good repeatability for the measurement of LLISI, which can provide strong support for data resource protection of LLISI.

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Verification of a laser tracker with an indexed metrology platform

Cited by 7 publications

References 20 publications

Mathematical calibration procedure of a capacitive sensor-based indexed metrology platform

Mathematical calibration procedure of a capacitive sensor-based indexed metrology platform

Full-Range Static Method of Calibration for Laser Tracker

Evaluation of the Large-Length Indoor Standard Installation Based on Single Point Scanning

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