Displacement measurement system for inverters using computer micro-vision

Wu, Heng; Zhang, Xianmin; Gan, Jinqiang; Li, Hai; Ge, P.

doi:10.1016/j.optlaseng.2015.12.018

Cited by 24 publications

(12 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For instance, the subpixel algorithms in the matching techniques involve a complex interpolation process, which can be time-consuming. There are still a large number of studies in recent years that remain off-line and post-processing due to the heavy computational cost [105], [160], [182]. Nevertheless, real-time and fast-speed motion measurement is always preferred.…”

Section: Efficiencymentioning

confidence: 99%

A Review of Computer Microvision-Based Precision Motion Measurement: Principles, Characteristics, and Applications

Sheng

Pang

et al. 2021

IEEE Trans. Instrum. Meas.

Self Cite

View full text Add to dashboard Cite

Micro/nano engineering is an emerging field which enables engineering and scientific discoveries in the microworld. As an effective and powerful tool for automation and manipulation at small scales, precision motion measurement by computer micro-vision is now broadly accepted and widely used in micro/nano engineering. Unlike other measurement methods, the vision-based techniques can intuitively visualize the measuring process with high interactivity, expansibility, and flexibility. This review paper aims to comprehensively present a survey of micro-vision-based motion measurement from the collective experience. Working principles of micro-vision systems are firstly introduced and described, where the hardware configuration, model calibration, and motion measurement algorithms are systematically summarized. The characteristics and performances of different micro-vision-based methods are then analyzed and discussed in terms of measurement resolution, range, degree of freedom, efficiency, and error sources. Recent advances of applications empowered by the developed computer micro-visionbased methods are also presented. The review can be helpful to researchers who engage in the development of micro-vision-based techniques, as well as provide the recent state and tendency for the research community of vision-based measurement, manipulation, and automation at micro/nano scales.

show abstract

Section: Efficiencymentioning

confidence: 99%

A Review of Computer Microvision-Based Precision Motion Measurement: Principles, Characteristics, and Applications

Sheng

Pang

et al. 2021

IEEE Trans. Instrum. Meas.

Self Cite

View full text Add to dashboard Cite

show abstract

“…It is widely used for measuring the shape, displacement, and full-field deformation of objects [ 12 , 13 ]. With the help of a stereo light microscope (SLM) vision system, digital image correlation methods can be applied to deformation measurement in small-scale areas [ 14 , 15 , 16 , 17 ].…”

Section: Introductionmentioning

confidence: 99%

Testing System for the Mechanical Properties of Small-Scale Specimens Based on 3D Microscopic Digital Image Correlation

Liu

2020

Sensors

View full text Add to dashboard Cite

The testing of the mechanical properties of materials on a small scale is difficult because of the small specimen size and the difficulty of measuring the full-field strain. To tackle this problem, a testing system for investigating the mechanical properties of small-scale specimens based on the three-dimensional (3D) microscopic digital image correlation (DIC) combined with a micro tensile machine is proposed. Firstly, the testing system is described in detail, including the design of the micro tensile machine and the 3D microscopic DIC method. Then, the effects of different shape functions on the matching accuracy obtained by the inverse compositional Gauss–Newton (IC-GN) algorithm are investigated and the numerical experiment results verify that the error due to under matched shape functions is far larger than that of overmatched shape functions. The reprojection error is shown to be smaller than before when employing the modified iteratively weighted radial alignment constraint method. Both displacement and uniaxial measurements were performed to demonstrate the 3D microscopic DIC method and the testing system built. The experimental results confirm that the testing system built can accurately measure the full-field strain and mechanical properties of small-scale specimens.

show abstract

“…[19][20][21][22] Since the measuring accuracy is restricted by the resolution of CCD camera, the above methods cannot achieve higher precision. However, these problems can be easily solved by using computer micro-vision technique 23 with the help of high-performance displacement algorithm. In addition, few literatures are devoted to the micro-vision-based methods for measuring the displacement of compliant precision micro-positioning stages with 2-DOF.…”

Section: Introductionmentioning

confidence: 99%

A high accuracy algorithm of displacement measurement for a micro-positioning stage

Zhang

et al. 2017

AIP Advances

Self Cite

View full text Add to dashboard Cite

A high accuracy displacement measurement algorithm for a two degrees of freedom compliant precision micro-positioning stage is proposed based on the computer micro-vision technique. The algorithm consists of an integer-pixel and a subpixel matching procedure. Series of simulations are conducted to verify the proposed method. The results show that the proposed algorithm possesses the advantages of high precision and stability, the resolution can attain to 0.01 pixel theoretically. In addition, the consuming time is reduced about 6.7 times compared with the classical normalized cross correlation algorithm. To validate the practical performance of the proposed algorithm, a laser interferometer measurement system (LIMS) is built up. The experimental results demonstrate that the algorithm has better adaptability than that of the LIMS.

show abstract

Displacement measurement system for inverters using computer micro-vision

Cited by 24 publications

References 13 publications

A Review of Computer Microvision-Based Precision Motion Measurement: Principles, Characteristics, and Applications

A Review of Computer Microvision-Based Precision Motion Measurement: Principles, Characteristics, and Applications

Testing System for the Mechanical Properties of Small-Scale Specimens Based on 3D Microscopic Digital Image Correlation

A high accuracy algorithm of displacement measurement for a micro-positioning stage

Contact Info

Product

Resources

About