Results 11 to 20 of about 18,522 (252)
Frontiers in Materials, 2022 Aiming at the difficulty of accurately calibrating the sample position in the terahertz (THz) imaging process, especially in the defect imaging detection and the precise characterization of the edge profile, a flexible and highly sensitive 3D terahertz ...
Tianhua Meng +7 more
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An Absolute Displacement Measurement Method and Its Application in Ship Motion Measurement
Journal of Marine Science and Engineering, 2023 Due to the fact that there is no static reference point in ocean space, relative measurement sensors such as laser sensors cannot be applied to the measurement of ship motion.
Chongyang Han, Xiong Hu
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International Journal of Optics, 2021 Frequency-modulated continuous-wave (FMCW) interference, as a new technology of laser interferometry, has the advantages of length traceability, large range, high accuracy, simple structure, and optical fiber transmission.
Bin Sun +3 more
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An Offset Laser Measurement Method for the Deviation Analysis of Cylindrical Gears
Machines, 2021 Generally, in the laser measurement of gears, the laser beam passes through the center of the gear, and the laser displacement sensor reads the spatial distance from the gear involute tooth surface to the laser displacement sensor.
Ning Mei +3 more
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Measurement of Auto-Focus Driving Distance for Mobile Phone Camera Lens Using a Confocal Displacement Sensor [PDF]
한국정밀공학회지, 2018 In mobile phone cameras, usually a voice coil motor (VCM) is used as a micro-positioning device for the image autofocus (AF) because of its low cost, simplicity, and reliability.
Suk Woo Son, Hagyong Kihm
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A Novel Method for Pose and Position Calibration of Laser Displacement Sensors
Sensors, 2023 Laser displacement sensors are widely used in the aviation industry for the purpose of surface normal measurements. The measurement of a surface normal depends on prior knowledge of the poses and positions of the sensors, which are obtained through calibration.
Liya Han, Long Yu, Xusheng Zhu
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Laser Displacement Sensors for Wind Tunnel Model Position Measurements [PDF]
Sensors, 2018 Wind tunnel measurements of two-dimensional wing sections, or airfoils, are the building block of aerodynamic predictions for many aerodynamic applications. In these experiments, the forces and pitching moment on the airfoil are measured as a function of the orientation of the airfoil relative to the incoming airflow.
Matthew Kuester +2 more
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Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2014 An on-machine measurement system to measure the workpiece's geometry or dimension plays an important role in manufacturing processes. A laser displacement sensor recently attracts more attention which enables on-machine high-speed continuous ...
Yuu NAGAI +2 more
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MATEC Web of Conferences, 2018 The linear displacement sensor is widely used in industrial measurement. The linear displacement sensor with measuring range less than 200mm is usually measured on a universal length measuring instrument.
Jiang Zhihua, Zeng Yanhua, Cai Zhenglong
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Flash CCD laser displacement sensor
Electronics Letters, 2006 An optical displacement sensor, utilising the triangular method, linear CCD and a real-time processing circuit with no microprocessors involved, is presented. Theoretical analysis and experiments were carried out. Results show that the sensor has a measurement range of 0.2 rad, high linearity of 0.1% FSO, and high sampling rate of 50 kHz.
Q.-P. Li, F. Ding, P. Fang
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