Results 31 to 40 of about 3,631,896 (245)
Flatness measurement of large flat with two-station laser trackers
International Journal of Optomechatronics, 2018 We present a novel method to accurately measure the flatness of a large flat. The method can be seen as a task-specific error correction of the laser tracker. Laser trackers are positioned at two specific measuring stations and measure the coordinates of
Jie Li, Jie Yang, Shibin Wu, Xuedong Cao
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A distance-constrained adjustment method for dynamic measurement using a laser tracker network and its accuracy evaluation [PDF]
AIP AdvancesThe laser tracker plays an important role in large-scale, high-accuracy measurement fields due to its exceptional accuracy and strong dynamic performance.
Yixin Ma +8 more
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Sensors, 2018 An engineering validation of a large optical telescope consists of executing major performing tests at the subsystem level to verify the overall engineering performance of the observatory.
Unai Mutilba +3 more
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Laser-Guided CT Intervention using Flexible Laser Bow
Current Directions in Biomedical Engineering, 2021 Laser bow systems are used for intervention guidance by steering laser rays. Such systems have shown applications in biopsy, nasal surgeries, drainage, pain therapy. In this paper, we introduce an image-based laser guided CT intervention.
Jain Hardik +5 more
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Head-Mounted Miniature Motorized Camera and Laser Pointer Driven by Eye Movements
Sensors, 2023 Recording a video scene as seen by an observer, materializing where is focused his visual attention and allowing an external person to point at a given object in this scene, could be beneficial for various applications such as medical education or remote
Vincent Nourrit +4 more
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Multi-Source Data Fusion Method for the Truss Structure Stability Measurement of Space Telescope
Applied Sciences, 2022 It is necessary for large aperture space telescopes to achieve high measurement accuracy for mechanical reference mounting surfaces, complex deformation conditions, and difficulty in describing spatial geometric properties. In this manuscript, we propose
Tianxiao Xu +8 more
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A Novel Camera-to-Robot Calibration Method for Vision-Based Floor Measurements [PDF]
ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information SciencesA novel hand–eye calibration method for ground-observing mobile robots is proposed. While cameras on mobile robots are common, they are rarely used for ground-observing measurement tasks. Laser trackers are increasingly used in robotics for precise
J. A. Rudolph, D. Haitz, M. Ulrich
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An Analysis of Joint Assembly Geometric Errors Affecting End-Effector for Six-Axis Robots
Robotics, 2020 This paper presents an analysis of the geometric errors of joint assembly that affect the end-effector for a six-axis industrial robot. The errors were composed of 30 parameters that come from the Geometric Dimensioning and Tolerancing (GD&T) design ...
Chana Raksiri +2 more
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, 2020 Six-degree-of-freedom (6D) sensors enhance the measurement capability of traditional three-degree-of-freedom (3D) laser trackers. However, the classical 6D measurement techniques still have shortcomings in actual use, such as the problem of line of sight
Linghui Yang +6 more
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Advances in Mechanical Engineering, 2019 This article proposes a modified sequential multilateration method for measuring three-dimensional coordinates. The measuring system consists of a single laser tracker and four relay targets whose relative positions have been pre-calibrated by the ...
Zhenjiu Zhang +6 more
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