International Symposium on Precision Engineering Measurement and Instrumentation最新文献_第4页

Kinematics identification and measurement accuracy verification of articulated arm coordinate measuring machines 关节臂三坐标测量机的运动学辨识与测量精度验证

International Symposium on Precision Engineering Measurement and Instrumentation Pub Date : 2019-03-07 DOI: 10.1117/12.2511790

Sen Wang, Guanbin Gao, Jun Zhao, J. Na, Wen Wang

引用次数: 0

Self-calibration method of precision shafting angle measurement error based on multiple reading heads 基于多读头的精密轴系角度测量误差自校正方法

International Symposium on Precision Engineering Measurement and Instrumentation Pub Date : 2019-03-07 DOI: 10.1117/12.2511826

Run Zhang, Wenhui Bao, Huining Zhao, Hua-Kun Jia, Liandong Yu

{"title":"Self-calibration method of precision shafting angle measurement error based on multiple reading heads","authors":"Run Zhang, Wenhui Bao, Huining Zhao, Hua-Kun Jia, Liandong Yu","doi":"10.1117/12.2511826","DOIUrl":"https://doi.org/10.1117/12.2511826","url":null,"abstract":"With the continuous improvement of equipment measurement accuracy and production efficiency requirements, calibration method with external reference standard can no longer meet the quality and efficiency requirements. In order to solve the online calibration problem and effectively improve the calibration efficiency of the Articulated Arm Coordinate Measuring Machines (AACMMs) in practical application, a self-calibration system of circular grating angle sensor which is applied to joints of the AACMMs was established. Based on the harmonic analysis of the angle measurement error, this paper deduces and analyzes the error suppression principle of the layout of the scanning heads on the calibration result, and establishes a non-uniform layout of the scanning heads to eliminate more and higher order harmonic errors. The simulation and test results show that the self-calibration method using this layout form of multiple reading heads can effectively reduce the measurement angle error without increasing the number of scanning heads, and improve the calibration efficiency and measurement accuracy of AACMMs.","PeriodicalId":115119,"journal":{"name":"International Symposium on Precision Engineering Measurement and Instrumentation","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115528693","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Adaptive segmentation method of pressed character image based on Wellner algorithm 基于Wellner算法的按压字符图像自适应分割方法

International Symposium on Precision Engineering Measurement and Instrumentation Pub Date : 2019-03-07 DOI: 10.1117/12.2512141

Xili Duan, Jing Le, Yuyang Ming, Shaowei Chen, Mingxing Tang

{"title":"Adaptive segmentation method of pressed character image based on Wellner algorithm","authors":"Xili Duan, Jing Le, Yuyang Ming, Shaowei Chen, Mingxing Tang","doi":"10.1117/12.2512141","DOIUrl":"https://doi.org/10.1117/12.2512141","url":null,"abstract":"The image of pressed characters on the surface of metal workpieces in industry has obvious unimodal characteristics, for this feature, this paper proposes an adaptive segmentation method based on Wellner algorithm, this method is used to segment the pressed character image whose character gray value is similar to background gray value. Firstly, we use uniform illumination to capture grayscale images. Next, the Retinex algorithm is used to enhance the details of the character edge, the grayscale distribution range is expanded to improve the image contrast. Then, the bilateral filtering algorithm is used to filter the image noise. In this paper, the pixel gray value of a certain point is selected as the center, the row and column mean value of the pixel is calculated, at the same time, the mean value of the pixel gray value in the 8-connected region that it belongs to the pixel selected to be the center is calculated. The algorithm applies the “center-around” idea, the Wellner algorithm is improved with the mean value and the image pixel points are traversed to achieve image binarization. Finally, the final segmentation result is obtained by combining morphological operations. The verification experimental results show that the proposed method has good self-adaptiveness and accuracy for the gray-scale histogram image with unimodal characteristics.","PeriodicalId":115119,"journal":{"name":"International Symposium on Precision Engineering Measurement and Instrumentation","volume":"279 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115762922","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Construction of a compact laser wavemeter with compensation of laser beam drift 具有激光束漂移补偿的紧凑型激光波长计的构造

International Symposium on Precision Engineering Measurement and Instrumentation Pub Date : 2019-03-07 DOI: 10.1117/12.2509514

Yindi Cai, B. Feng, K. Fan

{"title":"Construction of a compact laser wavemeter with compensation of laser beam drift","authors":"Yindi Cai, B. Feng, K. Fan","doi":"10.1117/12.2509514","DOIUrl":"https://doi.org/10.1117/12.2509514","url":null,"abstract":"A compact diffracting grating based laser wavemeter is constructed in this paper. Wavelength is the length unit of laser interferometers, it must be very accurate and stable during the length measurement. An air sensor, which is employed to correct the air refractive index through an empirical equation, is essential in laser interferometers. However, the empirical equation is suffered from indirect measurement, the correction accuracy is depended on the measurement accuracy of the air sensor. Slow response is other disadvantages of the empirical equation. Additional, the empirical equation is not applicable to correct the laser diode wavelength. Therefore, a direct measurement method of laser diode wavelength, based on the diffraction principle, is proposed and a compact, low-cost and simple wavemeter is constructed in this paper. Laser beam drift is recognized as one of critical error source in laser measurement. Therefore, a novel laser beam drift active compensation method is thus proposed in this study that integrates the functions of automatic type angle turning and PID controlled fine angle motion. After introducing the principles of wavelength measurement and laser beam drift compensation, the effectiveness of the wavemeter in real-time wavelength measurement is well verified by the experimental results.","PeriodicalId":115119,"journal":{"name":"International Symposium on Precision Engineering Measurement and Instrumentation","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115654095","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Method for high-precision distance estimation and dispersion mismatch compensation in frequency scanning interferometry 频率扫描干涉测量中高精度距离估计和色散失配补偿方法

International Symposium on Precision Engineering Measurement and Instrumentation Pub Date : 2019-03-07 DOI: 10.1117/12.2511747

Hao Pan, Xinghua Qu, Fumin Zhang

引用次数: 0

Development of optic-electronic autocollimators for monitoring the angular displacements of large objects 用于监测大物体角位移的光电自准直仪的研制

International Symposium on Precision Engineering Measurement and Instrumentation Pub Date : 2019-03-07 DOI: 10.1117/12.2512110

I. Konyakhin

引用次数: 0

An enhanced homodyne laser vibrometer based on an auto-gain module 一种基于自动增益模块的增强型静差激光测振仪

International Symposium on Precision Engineering Measurement and Instrumentation Pub Date : 2019-03-07 DOI: 10.1117/12.2512441

Ke Wang, Haijin Fu, Di Chang, P. Hu, Hongxing Yang, Ruitao Yang, Jiubin Tan

引用次数: 0

Research of the polarization-optical parameters of a solid-state matrix photomultiplier 固态矩阵光电倍增管偏振光学参数的研究

International Symposium on Precision Engineering Measurement and Instrumentation Pub Date : 2019-03-07 DOI: 10.1117/12.2511058

Anastasiya Y. Lobanova, V. Ryzhova, I. Konyakhin

{"title":"Research of the polarization-optical parameters of a solid-state matrix photomultiplier","authors":"Anastasiya Y. Lobanova, V. Ryzhova, I. Konyakhin","doi":"10.1117/12.2511058","DOIUrl":"https://doi.org/10.1117/12.2511058","url":null,"abstract":"The work is devoted to the research of the polarization-optical parameters of a solid-state matrix photomultiplier. The main parameters of the performance of the SiPM form from the sensitivity of the photodetector. As an object of study, a silicon photomultiplier ARRAY-C 60035-4P was chosen, which consists of 4 photosensitive sites. The pixels of the SiPM are avalanche photodiodes that are separated from each other by elements that do not participate in the formation of the useful signal and serve to suppress the secondary optical signal due to the optical coupling between. In this paper, experimental studies of the state of polarization reflected from the surface of each of the active regions of the matrix of a silicon photomultiplier are performed using a laser photoelectric ellipsometer LEF-3F-1. The action of the ellipsometer is based on the zero method of determining the polarization angles. In the course of the experiment the contractions of ellipsometric angles were determined. The experiment was carried out at four angles of incidence on the surface of the receiver, which corresponds to a set of reflective characteristics of a silicon photoelectric multiplier. With the help of these data, the estimation of the distribution of the reflection and transmission coefficients becomes possible, as well as the sensitivity distribution over the different sites of the SiPM.","PeriodicalId":115119,"journal":{"name":"International Symposium on Precision Engineering Measurement and Instrumentation","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125404514","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Real-time 3D shape measurement by fringe projection and GPU parallel computing 基于条纹投影和GPU并行计算的实时三维形状测量

International Symposium on Precision Engineering Measurement and Instrumentation Pub Date : 2019-03-07 DOI: 10.1117/12.2512171

Huijie Zhao, Yang Xu, Hongzhi Jiang, Xiaochun Diao, Chenghao Liu, Mingyi Xing

引用次数: 0

Study on resonant high-acceleration calibration system 谐振式高加速度标定系统的研究

International Symposium on Precision Engineering Measurement and Instrumentation Pub Date : 2019-03-07 DOI: 10.1117/12.2517313

Qi Lv, C. Cai, Guodong Zhai, Zhihua Liu, Jiachun Cheng

引用次数: 0