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2016 Conference on Precision Electromagnetic Measurements (CPEM 2016)最新文献

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A DCCT-based 100-A DC current source with high stability 基于dcct的100 A高稳定性直流电流源
2016 Conference on Precision Electromagnetic Measurements (CPEM 2016) Pub Date : 2016-07-10 DOI: 10.1109/CPEM.2016.7540486
Nong Wang, Yang Zhang, Zhengkun Li, Zhonghua Zhang
{"title":"A DCCT-based 100-A DC current source with high stability","authors":"Nong Wang, Yang Zhang, Zhengkun Li, Zhonghua Zhang","doi":"10.1109/CPEM.2016.7540486","DOIUrl":"https://doi.org/10.1109/CPEM.2016.7540486","url":null,"abstract":"This paper presents a simple solution to realize a 100-A dc current source with high stability. The new source is based on an improved voltage-controlled current source (VCCS) circuit, and a wideband dc current transducer (DCCT) is added for high-current conversion in the feedback loop. The advantage of this modification is that the power consumption on the sample resistor of the VCCS can be greatly reduced, thus the resistor stability can be easily guaranteed. The preliminary measurement results show that the current stability of the designed source is better than 0.5 ppm/h.","PeriodicalId":415488,"journal":{"name":"2016 Conference on Precision Electromagnetic Measurements (CPEM 2016)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125424664","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
Improved setup for bridge standard calibration up to 5 kHz 改进了高达5 kHz的桥标准校准设置
2016 Conference on Precision Electromagnetic Measurements (CPEM 2016) Pub Date : 2016-07-10 DOI: 10.1109/CPEM.2016.7540637
M. F. Beug, H. Moser, A. Kolling
{"title":"Improved setup for bridge standard calibration up to 5 kHz","authors":"M. F. Beug, H. Moser, A. Kolling","doi":"10.1109/CPEM.2016.7540637","DOIUrl":"https://doi.org/10.1109/CPEM.2016.7540637","url":null,"abstract":"This paper presents an improved calibration setup for static bridge standards with carrier frequency supply voltage in the frequency range between 225 Hz and 5 kHz. In the past the small bridge differential voltage in the mV/V range was calibrated in two subsequent voltage ratio calibrations. However, this procedure was time consuming and only works reliably if both voltages are stable over time. For this purpose a new setup was developed which is able to measure the differential voltage of the bridge standard in one single measurement. This improves the calibration time to approx. one third with reduced uncertainty.","PeriodicalId":415488,"journal":{"name":"2016 Conference on Precision Electromagnetic Measurements (CPEM 2016)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130157906","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
Laser refractometer as a transfer standard of the pascal 激光折光计作为帕斯卡的传递标准
2016 Conference on Precision Electromagnetic Measurements (CPEM 2016) Pub Date : 2016-07-10 DOI: 10.1109/CPEM.2016.7540725
P. Egan, J. Stone, J. Ricker, J. Hendricks
{"title":"Laser refractometer as a transfer standard of the pascal","authors":"P. Egan, J. Stone, J. Ricker, J. Hendricks","doi":"10.1109/CPEM.2016.7540725","DOIUrl":"https://doi.org/10.1109/CPEM.2016.7540725","url":null,"abstract":"We have developed a new low pressure sensor which is based on the measurement of (nitrogen) gas refractivity inside a Fabry-Perot (FP) cavity. We compare pressure determinations via this laser refractometer to that of well-established ultrasonic manometers throughout the range 100Pa to 100000Pa. The refractometer demonstrates 10<sup>-6</sup> precision for p > 50 kPa; - as good or better than the manometer - we argue that a laser refractometer represents a state-of-the-art transfer standard of the pascal. We also claim the refractometer has an accuracy of U(p<sub>FP</sub>) = [(16mPa)<sup>2</sup> + (11.9 × 10<sup>-6</sup> · p)<sup>2</sup>]<sup>1/2</sup>, as realized through the properties of nitrogen gas.","PeriodicalId":415488,"journal":{"name":"2016 Conference on Precision Electromagnetic Measurements (CPEM 2016)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134244005","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
Monitoring gravity for the NIST-4 watt balance 为NIST-4瓦特平衡监测重力
2016 Conference on Precision Electromagnetic Measurements (CPEM 2016) Pub Date : 2016-07-10 DOI: 10.1109/CPEM.2016.7540682
F. Seifert, D. Newell, L. Chao, D. Haddad, J. Pratt, S. Schlamminger
{"title":"Monitoring gravity for the NIST-4 watt balance","authors":"F. Seifert, D. Newell, L. Chao, D. Haddad, J. Pratt, S. Schlamminger","doi":"10.1109/CPEM.2016.7540682","DOIUrl":"https://doi.org/10.1109/CPEM.2016.7540682","url":null,"abstract":"The National Institute of Standards and Technology (NIST) new watt balance (NIST-4) has been constructed for the realization of mass through an exact value of the Planck constant in the new International System of Units (SI). The total relative uncertainty goal for the instrument of a few parts in 108 requires the determination of the local acceleration of gravity, g, with parts in 109 accuracy at the location of the mass at the time mechanical and electrical forces are being compared. We describe the procedures used and give results for the measurements of the local acceleration of gravity in the new watt balance facility.","PeriodicalId":415488,"journal":{"name":"2016 Conference on Precision Electromagnetic Measurements (CPEM 2016)","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134318208","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
A digital impedance bridge with auto-balancing source ratio 具有自动平衡源比的数字阻抗桥
2016 Conference on Precision Electromagnetic Measurements (CPEM 2016) Pub Date : 2016-07-10 DOI: 10.1109/CPEM.2016.7540590
Yan Yang, W. Lu, Lu Huang, Wei Wang, Jianting Zhao
{"title":"A digital impedance bridge with auto-balancing source ratio","authors":"Yan Yang, W. Lu, Lu Huang, Wei Wang, Jianting Zhao","doi":"10.1109/CPEM.2016.7540590","DOIUrl":"https://doi.org/10.1109/CPEM.2016.7540590","url":null,"abstract":"A digital impedance bridge with auto-balancing source ratio is described in this summary paper. Unlike impedances can be compared in audio frequency range with arbitrary magnitude and phase ratio produced by two digital generators. An automatic source balance method is introduced to the bridge with no need for fine adjustment of the complex source ratio and faster balancing of the bridge. The synchronous sampling method is adopted to measure the complex ratio at different frequency in normal conditions. Preliminary tests on L-R comparison were carried out.","PeriodicalId":415488,"journal":{"name":"2016 Conference on Precision Electromagnetic Measurements (CPEM 2016)","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131637957","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
Fully automated capacitance measurement system using new precise capacitance box 全自动电容测量系统采用新型精密电容箱
2016 Conference on Precision Electromagnetic Measurements (CPEM 2016) Pub Date : 2016-07-10 DOI: 10.1109/CPEM.2016.7540612
Mohammed Helmy Abd El-Raouf, M. H. A. Raouf
{"title":"Fully automated capacitance measurement system using new precise capacitance box","authors":"Mohammed Helmy Abd El-Raouf, M. H. A. Raouf","doi":"10.1109/CPEM.2016.7540612","DOIUrl":"https://doi.org/10.1109/CPEM.2016.7540612","url":null,"abstract":"In this paper, a new accurate capacitance box has been demonstrated to be used for calibration of capacitance measurement devices. 1666 different capacitance values, with minimum number of internal capacitive elements, could be produced by this new capacitance box compared to 1111 steps that are produced by the ordinary corresponding box. The introduced capacitance box has relative accuracy in the range from ±5×10-5 to ±5×10-4. It could be used to perform completely automated capacitance measurements, for the first time, at the National Institute for Standards (NIS), Egypt.","PeriodicalId":415488,"journal":{"name":"2016 Conference on Precision Electromagnetic Measurements (CPEM 2016)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132722775","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
Development of 1-MΩ quantum Hall array resistance standards 1-MΩ量子霍尔阵列电阻标准的研制
2016 Conference on Precision Electromagnetic Measurements (CPEM 2016) Pub Date : 2016-07-10 DOI: 10.1109/CPEM.2016.7540717
T. Oe, S. Gorwadkar, T. Itatani, N. Kaneko
{"title":"Development of 1-MΩ quantum Hall array resistance standards","authors":"T. Oe, S. Gorwadkar, T. Itatani, N. Kaneko","doi":"10.1109/CPEM.2016.7540717","DOIUrl":"https://doi.org/10.1109/CPEM.2016.7540717","url":null,"abstract":"We have started to develop 1-MΩ quantum Hall array standards with GaAs/AlGaAs substrates. This 1-MΩ QHR array device consists of 88 Hall bars, and the nominal value is 1 MΩ × (1-0.0342 μΩ/Ω). The ratio for this nominal, 10150/131, was derived by the continued fraction expansion method. It adopts the triple-connection technique to avoid the influence of contact resistance and wiring resistance on the quantized resistance value. We expect that this device will allow us to improve the high-resistance standard system and to convert the small current from electron pumps to easily measurable voltage without lowering precision.","PeriodicalId":415488,"journal":{"name":"2016 Conference on Precision Electromagnetic Measurements (CPEM 2016)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133114337","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: 18
Dynamic algorithms for PMUs — Methods for improving the signal processing effectiveness pmu的动态算法。提高信号处理效率的方法
2016 Conference on Precision Electromagnetic Measurements (CPEM 2016) Pub Date : 2016-07-10 DOI: 10.1109/CPEM.2016.7540743
U. Pogliano
{"title":"Dynamic algorithms for PMUs — Methods for improving the signal processing effectiveness","authors":"U. Pogliano","doi":"10.1109/CPEM.2016.7540743","DOIUrl":"https://doi.org/10.1109/CPEM.2016.7540743","url":null,"abstract":"This paper describes the signal processing algorithms that can be used for the PMUs operating in a dynamic environment. Dynamic response and rejection to noise, harmonics and interharmonics are discussed and some solutions for improving them, emerging from the technical literature and from some additional tests, are proposed. For example dynamic response can be improved by evaluating the Taylor series as a time function, while the rejection to harmonics by selecting appropriately the observation time.","PeriodicalId":415488,"journal":{"name":"2016 Conference on Precision Electromagnetic Measurements (CPEM 2016)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128861639","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
Scaling the current from a GHz electron pump using a CCC 缩放电流从一个GHz电子泵使用CCC
2016 Conference on Precision Electromagnetic Measurements (CPEM 2016) Pub Date : 2016-07-10 DOI: 10.1109/CPEM.2016.7540624
S. Giblin, G. Yamahata, J. Williams, S. Rozhko, T. Janssen, A. Fujiwara, M. Kataoka
{"title":"Scaling the current from a GHz electron pump using a CCC","authors":"S. Giblin, G. Yamahata, J. Williams, S. Rozhko, T. Janssen, A. Fujiwara, M. Kataoka","doi":"10.1109/CPEM.2016.7540624","DOIUrl":"https://doi.org/10.1109/CPEM.2016.7540624","url":null,"abstract":"We demonstrate the scaling of the current from a tunable-barrier electron pump using a cryogenic current comparator (CCC) with a turns ratio of 1:22592. The amplified current flows in a calibrated 100 kΩ resistor, and the voltage drop across this resistor is directly compared against a binary Josephson array. The experimental setup constitutes a prototype realization of the metrology triangle proposed more than 15 years ago.","PeriodicalId":415488,"journal":{"name":"2016 Conference on Precision Electromagnetic Measurements (CPEM 2016)","volume":"76 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115657487","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
A differential programmable josephson voltage standard for low-measurement 一个差分可编程约瑟夫逊电压标准的低测量
2016 Conference on Precision Electromagnetic Measurements (CPEM 2016) Pub Date : 2016-07-10 DOI: 10.1109/CPEM.2016.7540473
Honghui Li, Yuan Gao, Zengmin Wang
{"title":"A differential programmable josephson voltage standard for low-measurement","authors":"Honghui Li, Yuan Gao, Zengmin Wang","doi":"10.1109/CPEM.2016.7540473","DOIUrl":"https://doi.org/10.1109/CPEM.2016.7540473","url":null,"abstract":"An intrinsically accurate automated system for low-voltage measurements has been developed at NIM based on a differential programmable Josephson voltage standard. At 1 microvolt level, the typical difference between the mean value of 250 measurement points and the nominal value is 0.17 nV with the standard deviation of 1.4 nV. The experiments for uncertainty estimate have been carried out, which demonstrate the system offers a satisfactory reliability and stability. For fine-increment programmable Josephson voltage, a few expected applications are proposed.","PeriodicalId":415488,"journal":{"name":"2016 Conference on Precision Electromagnetic Measurements (CPEM 2016)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124435771","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
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