Pub Date : 2014-10-02DOI: 10.1109/CPEM.2014.6898397
K. Ojasalo, M. Hudlička, D. Humphreys
Traceable calibration of high-speed communications test equipment face challenges. The propagation of uncertainty from primary waveform standards can be done by using a covariance matrix approach, which becomes impractical as the waveform data length increases. With the new compressed covariance matrix approach uncertainty can be propagated for long waveform records. A freely available software tool for uncertainty assessment is presented.
{"title":"Uncertainty of communication signals measurement","authors":"K. Ojasalo, M. Hudlička, D. Humphreys","doi":"10.1109/CPEM.2014.6898397","DOIUrl":"https://doi.org/10.1109/CPEM.2014.6898397","url":null,"abstract":"Traceable calibration of high-speed communications test equipment face challenges. The propagation of uncertainty from primary waveform standards can be done by using a covariance matrix approach, which becomes impractical as the waveform data length increases. With the new compressed covariance matrix approach uncertainty can be propagated for long waveform records. A freely available software tool for uncertainty assessment is presented.","PeriodicalId":256575,"journal":{"name":"29th Conference on Precision Electromagnetic Measurements (CPEM 2014)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114203093","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}
Pub Date : 2014-10-02DOI: 10.1109/CPEM.2014.6898310
Haikuo Zhang, Xiaohai Cui, Yong Li
A novel derivation procedure and constraint condition of the equation of reflection coefficient of equivalent source is presented. In the system of power sensor calibration, the reflection coefficient of equivalent signal source is an essential factor to figure out the calibration factor or effective efficiency. This paper gives a proof why the equivalent coefficient signal source can be used in power sensor calibration when the system of equivalent signal source is open-loop.
{"title":"Analysis of physical significance of reflection coefficient of equivalent signal source and application in power sensor calibration","authors":"Haikuo Zhang, Xiaohai Cui, Yong Li","doi":"10.1109/CPEM.2014.6898310","DOIUrl":"https://doi.org/10.1109/CPEM.2014.6898310","url":null,"abstract":"A novel derivation procedure and constraint condition of the equation of reflection coefficient of equivalent source is presented. In the system of power sensor calibration, the reflection coefficient of equivalent signal source is an essential factor to figure out the calibration factor or effective efficiency. This paper gives a proof why the equivalent coefficient signal source can be used in power sensor calibration when the system of equivalent signal source is open-loop.","PeriodicalId":256575,"journal":{"name":"29th Conference on Precision Electromagnetic Measurements (CPEM 2014)","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114596160","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}
Pub Date : 2014-10-02DOI: 10.1109/CPEM.2014.6898348
C. Rothleitner, T. Niebauer, O. Francis
We report on a direct measurement of the relativistic Doppler shift with a Mach-Zehnder type interferometer, where the object mirror is subject to an accelerated motion. The measurement was realized with a commercial free-fall absolute gravimeter FG5X, which is usually used to measure the local acceleration due to gravity, g. The second order term of the Doppler shift has been measured with a relative uncertainty of 1.1 × 10-3.
{"title":"Precision measurement of the relativistic Doppler shift of an accelerated system","authors":"C. Rothleitner, T. Niebauer, O. Francis","doi":"10.1109/CPEM.2014.6898348","DOIUrl":"https://doi.org/10.1109/CPEM.2014.6898348","url":null,"abstract":"We report on a direct measurement of the relativistic Doppler shift with a Mach-Zehnder type interferometer, where the object mirror is subject to an accelerated motion. The measurement was realized with a commercial free-fall absolute gravimeter FG5X, which is usually used to measure the local acceleration due to gravity, g. The second order term of the Doppler shift has been measured with a relative uncertainty of 1.1 × 10-3.","PeriodicalId":256575,"journal":{"name":"29th Conference on Precision Electromagnetic Measurements (CPEM 2014)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114726376","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}
Pub Date : 2014-10-02DOI: 10.1109/CPEM.2014.6898430
G. Rietveld, Martin Fransen, N. Blanc, E. Houtzager, E. So
A reference system for on-site calibration and validation of revenue metering systems is realized. The system consists of a three-phase power meter and high-accuracy current and voltage transformers (CTs and VTs). Measurements can be made up to 150 kV (system voltage) and line currents up to 5000 A. The power meter, the CTs, and the VTs were all calibrated. Based on the excellent results of the calibration of these components it is possible to predict the full system performance with an uncertainty of less than 100 μW/VA. This estimation was verified with a full system validation, showing that the system is much more accurate than required and that detrimental effects to the accuracy are well understood.
{"title":"A reference system for on-site calibration of high-voltage revenue metering systems","authors":"G. Rietveld, Martin Fransen, N. Blanc, E. Houtzager, E. So","doi":"10.1109/CPEM.2014.6898430","DOIUrl":"https://doi.org/10.1109/CPEM.2014.6898430","url":null,"abstract":"A reference system for on-site calibration and validation of revenue metering systems is realized. The system consists of a three-phase power meter and high-accuracy current and voltage transformers (CTs and VTs). Measurements can be made up to 150 kV (system voltage) and line currents up to 5000 A. The power meter, the CTs, and the VTs were all calibrated. Based on the excellent results of the calibration of these components it is possible to predict the full system performance with an uncertainty of less than 100 μW/VA. This estimation was verified with a full system validation, showing that the system is much more accurate than required and that detrimental effects to the accuracy are well understood.","PeriodicalId":256575,"journal":{"name":"29th Conference on Precision Electromagnetic Measurements (CPEM 2014)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114823569","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}
Pub Date : 2014-10-02DOI: 10.1109/CPEM.2014.6898385
Ki‐Yong Oh, Jae-Kyung Lee, Joon-Young Park, Jun-Shin Lee, B. Epureanu
In order to monitor blade health and detect any damage efficiently, a new diagnosis method for wind turbine blades was proposed. In consideration of harsh environments of a wind turbine rotor, high-resolution real-time blade condition monitoring was realized with the use of optic sensors and a wireless network. A hybrid algorithm, which merges a statistical method with model information, was introduced to overcome the weakness of each method. In addition, alarm limits are determined through a machine learning algorithm to enhance its reliability. The proposed algorithm was embedded in the Blade Health Monitoring and Integrity Evaluation System and was verified at a 3MW wind turbine of the Yeongheung wind farm.
{"title":"Blade health monitoring and diagnosis method to enhance operational safety of wind turbine","authors":"Ki‐Yong Oh, Jae-Kyung Lee, Joon-Young Park, Jun-Shin Lee, B. Epureanu","doi":"10.1109/CPEM.2014.6898385","DOIUrl":"https://doi.org/10.1109/CPEM.2014.6898385","url":null,"abstract":"In order to monitor blade health and detect any damage efficiently, a new diagnosis method for wind turbine blades was proposed. In consideration of harsh environments of a wind turbine rotor, high-resolution real-time blade condition monitoring was realized with the use of optic sensors and a wireless network. A hybrid algorithm, which merges a statistical method with model information, was introduced to overcome the weakness of each method. In addition, alarm limits are determined through a machine learning algorithm to enhance its reliability. The proposed algorithm was embedded in the Blade Health Monitoring and Integrity Evaluation System and was verified at a 3MW wind turbine of the Yeongheung wind farm.","PeriodicalId":256575,"journal":{"name":"29th Conference on Precision Electromagnetic Measurements (CPEM 2014)","volume":"34 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116590293","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}
Pub Date : 2014-10-02DOI: 10.1109/CPEM.2014.6898325
Y. Sánchez, C. Rosi, E. Paez, M. Azpúrua
This paper presents an alternative application of the Feature Selective Validation (FSV) for comparing metrological data such as those coming from calibration certificates, standard references and historical records of intermediate verifications. Through the examples developed in this work, it is shown how the FSV method can be used to study the drift of the characteristic response of a measuring device, transducer or accessory, allowing identifying when the deviations observed are unacceptable requiring performing adjustments within the measurement chain. This approach can also be used to measure the improvement on a calibration method or of an specific condition of it.
{"title":"Feature Selective Validation applied to the comparison of calibration data","authors":"Y. Sánchez, C. Rosi, E. Paez, M. Azpúrua","doi":"10.1109/CPEM.2014.6898325","DOIUrl":"https://doi.org/10.1109/CPEM.2014.6898325","url":null,"abstract":"This paper presents an alternative application of the Feature Selective Validation (FSV) for comparing metrological data such as those coming from calibration certificates, standard references and historical records of intermediate verifications. Through the examples developed in this work, it is shown how the FSV method can be used to study the drift of the characteristic response of a measuring device, transducer or accessory, allowing identifying when the deviations observed are unacceptable requiring performing adjustments within the measurement chain. This approach can also be used to measure the improvement on a calibration method or of an specific condition of it.","PeriodicalId":256575,"journal":{"name":"29th Conference on Precision Electromagnetic Measurements (CPEM 2014)","volume":"181 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123427567","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}
Pub Date : 2014-10-02DOI: 10.1109/CPEM.2014.6898522
M. Ishii, Jeong Hwan Kim, Yu Ji
An APMP supplementary inter-comparison of loop antennas (9 kHz - 30 MHz) has been carried out between NMIJ, KRISS and NMIA. This summary describes the outline of the comparison and its progress so far. Measurement results will be presented at the conference (CPEM2014).
{"title":"APMP supplemetary comparison of loop antennas (APMP.EM.RF-S21.F)","authors":"M. Ishii, Jeong Hwan Kim, Yu Ji","doi":"10.1109/CPEM.2014.6898522","DOIUrl":"https://doi.org/10.1109/CPEM.2014.6898522","url":null,"abstract":"An APMP supplementary inter-comparison of loop antennas (9 kHz - 30 MHz) has been carried out between NMIJ, KRISS and NMIA. This summary describes the outline of the comparison and its progress so far. Measurement results will be presented at the conference (CPEM2014).","PeriodicalId":256575,"journal":{"name":"29th Conference on Precision Electromagnetic Measurements (CPEM 2014)","volume":"103 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124728298","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}
Pub Date : 2014-10-02DOI: 10.1109/CPEM.2014.6898420
Feipeng Lin, Huanghui Zhang, H. Shao, B. Liang
This paper proposes a DC high-voltage resistive divider circuit model, analyzes the reason that leakage current arises when applying high voltage, develops the measurement device for measuring leakage current of a divider, and puts forward a method of evaluating the divider voltage variation by measuring leakage current. The measurement uncertainty is better than 4 × 10-6.
{"title":"Research on voltage variation of DC high-voltage resistive divider by Measuring Leakage Current","authors":"Feipeng Lin, Huanghui Zhang, H. Shao, B. Liang","doi":"10.1109/CPEM.2014.6898420","DOIUrl":"https://doi.org/10.1109/CPEM.2014.6898420","url":null,"abstract":"This paper proposes a DC high-voltage resistive divider circuit model, analyzes the reason that leakage current arises when applying high voltage, develops the measurement device for measuring leakage current of a divider, and puts forward a method of evaluating the divider voltage variation by measuring leakage current. The measurement uncertainty is better than 4 × 10-6.","PeriodicalId":256575,"journal":{"name":"29th Conference on Precision Electromagnetic Measurements (CPEM 2014)","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123570204","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}
Pub Date : 2014-10-02DOI: 10.1109/CPEM.2014.6898288
dimitrios. georgakopoulos
A dual rf drive programmable Josephson voltage standard can generate quasi-continuous voltages. This paper focuses on the mathematical solutions to maximize the voltage resolution and describes one algorithm that can be used to solve this problem. Quasi-continuous voltages with a resolution of a few nanovolts can be achieved using Josephson junction arrays with missing junctions and arbitrary bit structure.
{"title":"Maximizing the resolution of a dual RF drive programmable Josephson voltage standard","authors":"dimitrios. georgakopoulos","doi":"10.1109/CPEM.2014.6898288","DOIUrl":"https://doi.org/10.1109/CPEM.2014.6898288","url":null,"abstract":"A dual rf drive programmable Josephson voltage standard can generate quasi-continuous voltages. This paper focuses on the mathematical solutions to maximize the voltage resolution and describes one algorithm that can be used to solve this problem. Quasi-continuous voltages with a resolution of a few nanovolts can be achieved using Josephson junction arrays with missing junctions and arbitrary bit structure.","PeriodicalId":256575,"journal":{"name":"29th Conference on Precision Electromagnetic Measurements (CPEM 2014)","volume":"156 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122154398","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}
Pub Date : 2014-10-02DOI: 10.1109/CPEM.2014.6898448
A. Rossi, T. Tanttu, K. Tan, R. Zhao, K. W. Chan, I. Iisakka, G. Tettamanzi, S. Rogge, M. Mottonen, A. Dzurak
Nanoscale single-electron pumps could serve as the realization of a new quantum standard of electrical current. Here, a silicon quantum dot with tunable tunnel barriers is used as a source of quantized current. By controlling the electrostatic confinement of the dot via purposely engineered gate electrodes, we show that the robustness of the pumping mechanism can be dramatically enhanced and the detrimental effects due to non-adiabatic transitions are largely reduced. Our pump can produce a current in excess of 80 pA with experimentally determined relative uncertainty lower than 50 parts per million.
{"title":"Effects of electrostatic confinement in a silicon single-electron pump","authors":"A. Rossi, T. Tanttu, K. Tan, R. Zhao, K. W. Chan, I. Iisakka, G. Tettamanzi, S. Rogge, M. Mottonen, A. Dzurak","doi":"10.1109/CPEM.2014.6898448","DOIUrl":"https://doi.org/10.1109/CPEM.2014.6898448","url":null,"abstract":"Nanoscale single-electron pumps could serve as the realization of a new quantum standard of electrical current. Here, a silicon quantum dot with tunable tunnel barriers is used as a source of quantized current. By controlling the electrostatic confinement of the dot via purposely engineered gate electrodes, we show that the robustness of the pumping mechanism can be dramatically enhanced and the detrimental effects due to non-adiabatic transitions are largely reduced. Our pump can produce a current in excess of 80 pA with experimentally determined relative uncertainty lower than 50 parts per million.","PeriodicalId":256575,"journal":{"name":"29th Conference on Precision Electromagnetic Measurements (CPEM 2014)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122542794","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}
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