2019 IEEE International Instrumentation and Measurement Technology Conference (I2MTC)最新文献_第8页

Reducing the Time Consumption of Vibration Correction Methods for Absolute Gravimeters 减少绝对重力仪振动校正方法的时间消耗

2019 IEEE International Instrumentation and Measurement Technology Conference (I2MTC) Pub Date : 2019-05-01 DOI: 10.1109/I2MTC.2019.8826870

Meiying Guo, K. Wu, Jiamin Yao, Yi Wen, Zhenxing Li, Lijun Wang

{"title":"Reducing the Time Consumption of Vibration Correction Methods for Absolute Gravimeters","authors":"Meiying Guo, K. Wu, Jiamin Yao, Yi Wen, Zhenxing Li, Lijun Wang","doi":"10.1109/I2MTC.2019.8826870","DOIUrl":"https://doi.org/10.1109/I2MTC.2019.8826870","url":null,"abstract":"Free-fall absolute gravimeters are widely employed to measure the gravitational acceleration, commonly known as g. It applies an interferometer to measure the trajectory of a free-falling object. The measurement precision of the absolute gravimeters is limited by the ground vibration. A vibration correction method is often applied in a noisy environment including a moving platform, sometimes it is required to get the g value quickly. It takes much time about 6 min to calculate the g value for one set measurement (no less than 25 drops). In order to quickly and accurately obtain the g value in hostile environments, there are two modifying methods including applying a lower sampling rate than original sampling rate of the vibration signal, and applying a division on trajectory data method. An equally spaced in distance division method is used. The results show, when applying the sampling rate of the vibration signal 1 MHz and the division factor 14, the total consumption time is reduced to one quarter of the time, from about 6 min to 1.5 min. Meanwhile, the error between the corrected results with and without the modifying methods is below 10 μGal, and the standard deviation of the g value has no significant change. In the future, promisingly it will be used to quick and precise dynamic absolute gravity measurement in hostile environments.","PeriodicalId":132588,"journal":{"name":"2019 IEEE International Instrumentation and Measurement Technology Conference (I2MTC)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123915949","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

Optical Analysis and Correction for Circumferential Liquid Film Measurement Based on Planar Laser-induced Fluorescence Method 基于平面激光诱导荧光法的周向液膜测量光学分析与校正

2019 IEEE International Instrumentation and Measurement Technology Conference (I2MTC) Pub Date : 2019-05-01 DOI: 10.1109/I2MTC.2019.8827124

T. Xue, Chenyang Li, Qian Wang

引用次数: 2

Defect Feature Extraction in Eddy Current Testing Based on Convolutional Sparse Coding 基于卷积稀疏编码的涡流检测缺陷特征提取

2019 IEEE International Instrumentation and Measurement Technology Conference (I2MTC) Pub Date : 2019-05-01 DOI: 10.1109/I2MTC.2019.8826935

Yang Tao, Hanyang Xu, J. S. Avila, C. Ktistis, W. Yin, A. Peyton

引用次数: 2

Excitation Characteristics of Ultrasonic Probe 超声探头的激励特性

2019 IEEE International Instrumentation and Measurement Technology Conference (I2MTC) Pub Date : 2019-05-01 DOI: 10.1109/I2MTC.2019.8826943

Lide Fang, Xiaofei Yu, Qiaoqiao Zeng, Ning Zhao, Xiaoting Li

{"title":"Excitation Characteristics of Ultrasonic Probe","authors":"Lide Fang, Xiaofei Yu, Qiaoqiao Zeng, Ning Zhao, Xiaoting Li","doi":"10.1109/I2MTC.2019.8826943","DOIUrl":"https://doi.org/10.1109/I2MTC.2019.8826943","url":null,"abstract":"the quality of ultrasonic transducer has a direct impact on the performance of ultrasonic flowmeter, the ultrasonic transducer function is converting the electrical signal to mechanical signal and mechanical signal to electrical signal, this process realizes the generation and reception of ultrasonic waves. The electrical signals of the excitation transducer are different, causing the effect of the transmitting transducer to be different. Based on different excitation signals, the transmitting transducer is urged to study the difference of receiving a signal under various excitations. At the same time, a COMSOL simulation method was proposed to simulate different excitation methods for single-channel ultrasound probes, and the difference in sound field distribution during transmission. Experiments verify the rationality of simulation results. The excitation signal is selected as a square wave, sine wave, with different burst number and burst time interval as the signal entry. Discuss the parameters such as the propagation trajectory, propagation time and sound pressure distribution of ultrasonic waves with the variation of excitation mode, and analyze its influence on the received signal.","PeriodicalId":132588,"journal":{"name":"2019 IEEE International Instrumentation and Measurement Technology Conference (I2MTC)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123721641","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

Accuracy Analysis of an Enhanced Frequency-Domain Linear Least-Squares Algorithm 一种改进型频域线性最小二乘算法精度分析

2019 IEEE International Instrumentation and Measurement Technology Conference (I2MTC) Pub Date : 2019-05-01 DOI: 10.1109/I2MTC.2019.8827090

D. Belega, D. Petri

引用次数: 1

DAQ Golden Rules in the Anti-Aliasing Bessel Filter vs. Potentially Lost Events in the Surface Detectors in Cosmic Rays Experiments 抗混叠贝塞尔滤波器中的DAQ黄金法则与宇宙射线实验中表面探测器中的潜在丢失事件

2019 IEEE International Instrumentation and Measurement Technology Conference (I2MTC) Pub Date : 2019-05-01 DOI: 10.1109/I2MTC.2019.8826989

Z. Szadkowski, A. Szadkowska

引用次数: 0

Wideband Circular Microwave Imaging Array Embedded into Metallic Cylinder 嵌入金属圆柱体的宽带圆形微波成像阵列

2019 IEEE International Instrumentation and Measurement Technology Conference (I2MTC) Pub Date : 2019-05-01 DOI: 10.1109/I2MTC.2019.8827133

M. Abou-Khousa

引用次数: 0

An Automatic Emulation System for Environmental Thermal Energy Harvesting 环境热能收集自动仿真系统

2019 IEEE International Instrumentation and Measurement Technology Conference (I2MTC) Pub Date : 2019-05-01 DOI: 10.1109/I2MTC.2019.8827004

M. Camboim, O. Baiocchi, A. W. R. Villarim, S. Catunda, C. P. Souza, C. Moreira

引用次数: 7

A clustering low-rank approach for aero-enging bearing fault detection 航空工程轴承故障检测的聚类低秩方法

2019 IEEE International Instrumentation and Measurement Technology Conference (I2MTC) Pub Date : 2019-05-01 DOI: 10.1109/I2MTC.2019.8826891

Han Zhang, Xuefeng Chen, Xiaoli Zhang

{"title":"A clustering low-rank approach for aero-enging bearing fault detection","authors":"Han Zhang, Xuefeng Chen, Xiaoli Zhang","doi":"10.1109/I2MTC.2019.8826891","DOIUrl":"https://doi.org/10.1109/I2MTC.2019.8826891","url":null,"abstract":"The highly overlapping distortion characteristic of high speed aero-engine bearing faults violates the fundamental assumption of popular bearing fault diagnostic techniques which assume that every impulse has a distinct exponential-decaying pattern. Therefore, a tailored clustering low rank framework (coined as CluLR) is proposed for the feature detection of aero-engine bearings. This work firstly explores the underlying prior information that fault features demonstrate multiple similarity structures in a transformed data matrix obtained through employing an elaborately designed partition operator. Then, incorporating the clustering procedure into low-rank regularization model, the proposed CluLR guarantees that different similarity information is reliably concentrated onto their matched low-rank domains, which effectively eliminates the singular value overlapping coherent pathology. Consequently, weak features as well as strong features could be detected simultaneously. Moreover, an alternative minimization algorithm adopted from block coordinate descent framework is developed to solve the two-stage nonsmooth and nonconvex problem. Lastly, compared with the state-of-the-art bearing diagnosis techniques, the proposed CluLR’s superiority is sufficiently verified through its application to the experimental data from an aero-engine bearing under 25000 rev/min for overlapping distorted feature detection tasks.","PeriodicalId":132588,"journal":{"name":"2019 IEEE International Instrumentation and Measurement Technology Conference (I2MTC)","volume":"79 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127187655","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: 4

Operation Status Tracking for Legacy Manufacturing Systems via Vibration Analysis 基于振动分析的传统制造系统运行状态跟踪

2019 IEEE International Instrumentation and Measurement Technology Conference (I2MTC) Pub Date : 2019-05-01 DOI: 10.1109/I2MTC.2019.8826819

B. Ooi, W. Beh, W. Lee, S. Shirmohammadi

{"title":"Operation Status Tracking for Legacy Manufacturing Systems via Vibration Analysis","authors":"B. Ooi, W. Beh, W. Lee, S. Shirmohammadi","doi":"10.1109/I2MTC.2019.8826819","DOIUrl":"https://doi.org/10.1109/I2MTC.2019.8826819","url":null,"abstract":"Tracking the status of manufacturing systems is important for analyzing the performance of a manufacturing process. Unfortunately, legacy manufacturing systems are technologies from the yesteryears which have no Internet connectivity and very often are not programmable. Gathering operational information of such systems is often done manually with poor temporal resolution. This work proposes an Internet-of-things (IoT) approach that uses vibration sensors to track the operation status of legacy manufacturing systems. One of the challenges of using vibration data is to identify the meaning of the vibration without prior knowledge of the vibration profile and without the privilege to interrupt the manufacturing process. Although there are many existing works that capture and analyze vibration data, these existing works very often only focus on fault diagnosis and prognosis. Our work focuses on using the vibration data to monitor the operation status of a manufacturing machine. Experimental results show that the proposed vibration analysis method is able to track the operation status of a machine with more than 90% accuracy, in the worst case with 90.2% and standard uncertainty of 3.6%.","PeriodicalId":132588,"journal":{"name":"2019 IEEE International Instrumentation and Measurement Technology Conference (I2MTC)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129978397","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: 8