Results 11 to 20 of about 1,580,266 (298)

Investigation of Angle Measurement Based on Direct Third Harmonic Generation in Centrosymmetric Crystals

open access: yesApplied Sciences, 2023
This paper proposed angle measurement methods based on direct third harmonic generation (THG) in centrosymmetric crystals. The principles of the intensity-dependent and the wavelength-dependent angle measurement methods were illustrated.
Kuangyi Li   +6 more
doaj   +1 more source

High Accuracy Acquisition of 3-D Flight Trajectory of Individual Insect Based on Phase Measurement

open access: yesSensors, 2016
Accurate acquisition of 3-D flight trajectory of individual insect could be of benefit to the research of insect migration behaviors and the development of migratory entomology.
Cheng Hu   +4 more
doaj   +1 more source

Integration of Error Compensation of Coordinate Measuring Machines into Feature Measurement: Part I—Model Development

open access: yesSensors, 2016
The development of an error compensation model for coordinate measuring machines (CMMs) and its integration into feature measurement is presented. CMMs are widespread and dependable instruments in industry and laboratories for dimensional measurement ...
Roque Calvo   +3 more
doaj   +1 more source

An Optical Frequency Domain Angle Measurement Method Based on Second Harmonic Generation

open access: yesSensors, 2021
This paper proposes a new optical angle measurement method in the optical frequency domain based on second harmonic generation with a mode-locked femtosecond laser source by making use of the unique characteristic of the high peak power and wide spectral
Wijayanti Dwi Astuti   +5 more
doaj   +1 more source

A New Payload Swing Angle Sensing Device and Its Accuracy

open access: yesSensors, 2021
Measuring the swing angle of a crane load is a relatively well-known but unsatisfactorily solved problem in technical practice. This measurement is necessary for the automatic stabilization of load swing without human intervention. This article describes
Patrik Grosinger   +4 more
doaj   +1 more source

A Distributed Method for Self-Calibration of Magnetoresistive Angular Position Sensor within a Servo System

open access: yesSensors, 2022
Magnetoresistive angle position sensors are, beside Hall effect sensors, especially suitable for usage within servo systems due to their reliability, longevity, and resilience to unfavorable environmental conditions.
Vladimir Čeperković   +2 more
doaj   +1 more source

The Machine Vision Dial Automatic Drawing System—Based on CAXA Secondary Development

open access: yesApplied Sciences, 2023
Whether the pointer recognition of an SF6 (sulfur hexafluoride) density controller is correct or not is directly related to enterprise security. Therefore, a pointer recognition system that is highly efficient, precise, and secure is required.
Ning Zhang, Fei Li, Enxu Zhang
doaj   +1 more source

An Innovative Dual-Axis Precision Level Based on Light Transmission and Refraction for Angle Measurement

open access: yesApplied Sciences, 2020
Currently, the widely used pendulum-type precision level cannot be miniaturized because reducing the size of the pendulum will reduce its displacement so as to decrease the measurement accuracy and resolution. Moreover, the commercial pendulum-type level
Yubin Huang   +4 more
doaj   +1 more source

Precision Measurement of the Weak Mixing Angle in Moller Scattering [PDF]

open access: yes, 2005
We report on a precision measurement of the parity-violating asymmetry in fixed target electron-electron (Moller) scattering: A_PV = -131 +/- 14 (stat.) +/- 10 (syst.) parts per billion, leading to the determination of the weak mixing angle \sin^2 ...
A. Czarnecki   +62 more
core   +2 more sources

A Two-Axis Goniometric Sensor for Tracking Finger Motion

open access: yesSensors, 2017
The study of finger kinematics has developed into an important research area. Various hand tracking systems are currently available; however, they all have limited functionality.
Lefan Wang   +2 more
doaj   +1 more source

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