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Precision Mechanical Measurements最新文献

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Digital optimeter based on linear CCD 基于线阵CCD的数字测光计
Precision Mechanical Measurements Pub Date : 2013-10-10 DOI: 10.1117/12.2035786
Qing Hu, Yuanling Xu
{"title":"Digital optimeter based on linear CCD","authors":"Qing Hu, Yuanling Xu","doi":"10.1117/12.2035786","DOIUrl":"https://doi.org/10.1117/12.2035786","url":null,"abstract":"In this paper, the development of a new type of digital optimeter based on linear CCD is introduced and discussed. It is based on traditional autocollimation optical system and optical lever motion, with linear CCD as measuring element. A light band generated by slit is captured by linear CCD after passing through an autocollimation optical system. A piece of mirror placed in the optical path of this system is controlled by displacement of a measuring slide in order to adjust the light band imaging position. The displacement of light band is detected by CCD and is then displayed in digital format. Such a design successfully eliminates the existing issues of signal quality and signal overspeed in digital optimeters using grating as the measuring element. The final product based on this technique has been released, offering a resolution of 0.1μm and 0.02μm.","PeriodicalId":166465,"journal":{"name":"Precision Mechanical Measurements","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114865274","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
Arbitrary and absolute length measurement based on time-of-flight method using femtosecond optical frequency comb 基于飞行时间法的飞秒光频梳任意和绝对长度测量
Precision Mechanical Measurements Pub Date : 2013-10-10 DOI: 10.1117/12.2035729
S. Xing, Fumin Zhang, S. Cao, Xinghua Qu
{"title":"Arbitrary and absolute length measurement based on time-of-flight method using femtosecond optical frequency comb","authors":"S. Xing, Fumin Zhang, S. Cao, Xinghua Qu","doi":"10.1117/12.2035729","DOIUrl":"https://doi.org/10.1117/12.2035729","url":null,"abstract":"In this paper, the application of femtosecond optical frequency comb for length measurement is analyzed and developed. Based on the modified Michelson interferometer by combining with multiple pulse train interference and time-of-flight method, an arbitrary and absolute length measurement system is set up. The timing difference is calculated by the firstorder and second-order optical cross-correlation signals separately; therefore the absolute distance is obtained. An experiment of measuring a 60cm length is conducted and the results are compared with that from a high precision laser displacement sensor. Results show a good measuring linearity with the measurement precision of ±0.5μm.","PeriodicalId":166465,"journal":{"name":"Precision Mechanical Measurements","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126308741","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
Analysis and experimental study of the spherical joint clearance 球面关节间隙的分析与实验研究
Precision Mechanical Measurements Pub Date : 2013-10-10 DOI: 10.1117/12.2035728
Pengju Zhao, P. Hu, Xinxin Bao, Shuaipeng Li
{"title":"Analysis and experimental study of the spherical joint clearance","authors":"Pengju Zhao, P. Hu, Xinxin Bao, Shuaipeng Li","doi":"10.1117/12.2035728","DOIUrl":"https://doi.org/10.1117/12.2035728","url":null,"abstract":"The spherical joint clearance is a key error factor, which influenced and restricted the application of parallel mechanism in high precision field. This paper discusses the regularity of the spherical joint clearance in the parallel mechanism and its influence on the accuracy of the parallel mechanism in both theoretical and experimental aspects. A spherical joint clearance measuring instrument is introduced and used to measure the joint clearance. And the relationship between the clearance and its work pose is revealed. Based on the theoretical and experimental analysis, it is concluded that the clearance of the spherical joint is near-linear proportional to the applied load as well as the clearances in different poses obey the Rayleigh distribution approximately under the same load.","PeriodicalId":166465,"journal":{"name":"Precision Mechanical Measurements","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115929153","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
Placement of the material temperature sensor during measuring the accuracy of CNC machine tools 测量数控机床精度时放置材料温度传感器
Precision Mechanical Measurements Pub Date : 2013-10-10 DOI: 10.1117/12.2035876
Dongsheng Zhao, Minqiang Jia, Jian Zhang, Lei Sun, Wei-jun Li
{"title":"Placement of the material temperature sensor during measuring the accuracy of CNC machine tools","authors":"Dongsheng Zhao, Minqiang Jia, Jian Zhang, Lei Sun, Wei-jun Li","doi":"10.1117/12.2035876","DOIUrl":"https://doi.org/10.1117/12.2035876","url":null,"abstract":"In view of the dispute on the placement of material sensor when measuring the positional accuracy of a linear axis of a CNC machine tool, this paper presents the method and principle of deciding where to put the material temperature sensor. The positional accuracy of the linear axis of the machine tool is one of the most important performance parameters, and it must be measured when setup and check. The placement of the material temperature sensor has great influence on the measurement accuracy. At present, there are two main views on this issue: one is to place the sensor on the table of the machine tool, the other is to place it on the feedback system. This conflict between these two debates often makes the measurers feel confused and as a result influences the measure quality, sometimes. This thesis attempts to classify the CNC machine tools positional accuracy measurement according to its different purposes, then further presents the best placement. The thesis also elaborates other relevant questions of the placement of the material temperature sensor.","PeriodicalId":166465,"journal":{"name":"Precision Mechanical Measurements","volume":"56 21","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131609405","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
A novel design of parallel piezoelectric six-degree-of-freedom accelerometer 一种新型并联压电六自由度加速度计的设计
Precision Mechanical Measurements Pub Date : 2013-10-10 DOI: 10.1117/12.2035847
Huayi Lv, Lan Qin, Jun Liu
{"title":"A novel design of parallel piezoelectric six-degree-of-freedom accelerometer","authors":"Huayi Lv, Lan Qin, Jun Liu","doi":"10.1117/12.2035847","DOIUrl":"https://doi.org/10.1117/12.2035847","url":null,"abstract":"According to the drawback of elastic style six-degree-of-freedom (6-DOF) accelerometer, a novel parallel piezoelectric six-degree-of-freedom accelerometer is proposed. First, the operating principle and structure of the accelerometer is presented, then the finite element model of accelerometer is established by ANSYS analysis tools, and getting some parameters, such as output charge sensitivity, resonance frequency etc. Finally, on the basis of analysis of simulation results, a conclusion can be given that cross-axis sensitivity is less than 1%. The resonance frequency is more than 5900Hz, the accelerometer has simple and rational structure and all parameters meet requirement.","PeriodicalId":166465,"journal":{"name":"Precision Mechanical Measurements","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127396803","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
Nanometrology interferometric coordinates measurement system for local probe microscopy 局部探针显微纳米干涉坐标测量系统
Precision Mechanical Measurements Pub Date : 2013-10-10 DOI: 10.1117/12.2035477
J. Hrabina, J. Lazar, P. Klapetek, O. Cíp, M. Čížek, M. Sery
{"title":"Nanometrology interferometric coordinates measurement system for local probe microscopy","authors":"J. Hrabina, J. Lazar, P. Klapetek, O. Cíp, M. Čížek, M. Sery","doi":"10.1117/12.2035477","DOIUrl":"https://doi.org/10.1117/12.2035477","url":null,"abstract":"We present an overview of approaches to the design of nanometrology measuring setups with a focus on methodology of nanometrology interferometric techniques and associated problems. The design and development of a positioning system with interferometric multiaxis monitoring and control involved for scanning probe microscopy techniques (primarily atomic force microscopy, AFM) for detection of the sample profile is presented. Coordinate position sensing allows upgrading the imaging microscope techniques up to quantified measuring. Especially imaging techniques in the microand nanoworld overcoming the barrier of resolution given by the wavelength of visible light are a suitable basis for design of measuring systems with the best resolution possible. The system is being developed in cooperation with the Czech metrology institute and it is intended to operate as a national nanometrology standard combining local probe microscopy techniques and sample position control with traceability to the primary standard of length.","PeriodicalId":166465,"journal":{"name":"Precision Mechanical Measurements","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124297974","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
Research and analysis of AC sampling standard value converting circuits 交流采样标准值转换电路的研究与分析
Precision Mechanical Measurements Pub Date : 2013-10-10 DOI: 10.1117/12.2035802
Lili Mu, Zhijing Li, Zekuan Chen
{"title":"Research and analysis of AC sampling standard value converting circuits","authors":"Lili Mu, Zhijing Li, Zekuan Chen","doi":"10.1117/12.2035802","DOIUrl":"https://doi.org/10.1117/12.2035802","url":null,"abstract":"Several typical circuits of AC voltage and current conditioning and filter circuit were summarized according to the different situations of electric energy measurement. The circuits of signal rising standard values were given in the paper, these circuits were compared, analyzed and evaluated. An AC voltage and current signal conversion circuit was designed which could detect the 50 times harmonic component of 50Hz AC power.","PeriodicalId":166465,"journal":{"name":"Precision Mechanical Measurements","volume":"438 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114582352","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
Design of energy-saving control system for LED street lamps LED路灯节能控制系统设计
Precision Mechanical Measurements Pub Date : 2013-10-10 DOI: 10.1117/12.2035722
Xiao Ding, Wenguang Jin
{"title":"Design of energy-saving control system for LED street lamps","authors":"Xiao Ding, Wenguang Jin","doi":"10.1117/12.2035722","DOIUrl":"https://doi.org/10.1117/12.2035722","url":null,"abstract":"Based on the energy-saving and safe-driving requirements of road lighting, a kind of energy-saving system is proposed for street lamps in this paper, which is handled by two controllers. At daybreak and dusk, the lamps are turned on or off according to local sunrise and sunset. And at night, it is controlled by a fuzzy controller. Traffic flow and its variation rate, the highest road speed limit are taken as the inputs of the controller, at the same time, the lighting comfort and the experience of driver are defined as the fuzzy sets and control rules. LED lamps are used in the system as illuminant. The numerical simulation in MATLAB and analysis on the practical measured data show that the system is effective in energy-saving for road lighting.","PeriodicalId":166465,"journal":{"name":"Precision Mechanical Measurements","volume":"140 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116456562","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
Multimodal image registration based on SURF and KD tree 基于SURF和KD树的多模态图像配准
Precision Mechanical Measurements Pub Date : 2013-10-10 DOI: 10.1117/12.2035875
Zongyun Gu, Yunxia Yin, Chunming Du
{"title":"Multimodal image registration based on SURF and KD tree","authors":"Zongyun Gu, Yunxia Yin, Chunming Du","doi":"10.1117/12.2035875","DOIUrl":"https://doi.org/10.1117/12.2035875","url":null,"abstract":"Aiming at the requirements of multimodal medical image registration for good robustness, high-accuracy and speed, this paper proposes a registration algorithm of multimodal brain medical image based on Speeded-Up Robust Features (SURF) and K-dimension (KD) tree. This algorithm first of all extracts SURF feature points from images and creates feature vector, then build KD tree to complete the image matching, and finally the image registration process is accomplished by estimating space geometric varied parameters according to the matching point pair. The algorithm combines robustness of SURF and high efficiency of improved KD tree. Experimental results show that under the conditions of images with noise, non-uniform intensity and large range of the initial misalignment, the proposed algorithm achieves better robustness, higher speed as well as good registration accuracy.","PeriodicalId":166465,"journal":{"name":"Precision Mechanical Measurements","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123930229","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
Study on the three-station typical network deployments of workspace Measurement and Positioning System 工作空间测量定位系统三站典型组网部署研究
Precision Mechanical Measurements Pub Date : 2013-10-10 DOI: 10.1117/12.2035624
Z. Xiong, J. G. Zhu, B. Xue, S. Ye, Y. Xiong
{"title":"Study on the three-station typical network deployments of workspace Measurement and Positioning System","authors":"Z. Xiong, J. G. Zhu, B. Xue, S. Ye, Y. Xiong","doi":"10.1117/12.2035624","DOIUrl":"https://doi.org/10.1117/12.2035624","url":null,"abstract":"As a novel network coordinate measurement system based on multi-directional positioning, workspace Measurement and Positioning System (wMPS) has outstanding advantages of good parallelism, wide measurement range and high measurement accuracy, which makes it to be the research hotspots and important development direction in the field of large-scale measurement. Since station deployment has a significant impact on the measurement range and accuracy, and also restricts the use-cost, the optimization method of station deployment was researched in this paper. Firstly, positioning error model was established. Then focusing on the small network consisted of three stations, the typical deployments and error distribution characteristics were studied. Finally, through measuring the simulated fuselage using typical deployments at the industrial spot and comparing the results with Laser Tracker, some conclusions are obtained. The comparison results show that under existing prototype conditions, I_3 typical deployment of which three stations are distributed in a straight line has an average error of 0.30 mm and the maximum error is 0.50 mm in the range of 12 m. Meanwhile, C_3 typical deployment of which three stations are uniformly distributed in the half-circumference of an circle has an average error of 0.17 mm and the maximum error is 0.28 mm. Obviously, C_3 typical deployment has a higher control effect on precision than I_3 type. The research work provides effective theoretical support for global measurement network optimization in the future work.","PeriodicalId":166465,"journal":{"name":"Precision Mechanical Measurements","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124691656","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: 2
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