Four Terminal Pair Digital Sampling Impedance Bridge up to 1 MHz
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00177016%3A_____%2F19%3AN0000006" target="_blank" >RIV/00177016:_____/19:N0000006 - isvavai.cz</a>
Výsledek na webu
<a href="https://ieeexplore.ieee.org/document/8678856" target="_blank" >https://ieeexplore.ieee.org/document/8678856</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1109/TIM.2019.2908649" target="_blank" >10.1109/TIM.2019.2908649</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Four Terminal Pair Digital Sampling Impedance Bridge up to 1 MHz
Popis výsledku v původním jazyce
This paper describes a new four terminal pair digital sampling impedance bridge designed for frequency range up to 1MHz and small impedances, such as shunts. The bridge is capable of comparing impedance standards of arbitrary ratios in a full complex plane from approximately 100 kΩ down to 50mΩ, limited by maximum achievable current 3 A. To keep low uncertainties a new multiplexer was designed and a very simple and fully automated linearity correction method based on the pair of calculable resistors was developed and validated. The paper describes the design and details of the bridge topology, basic uncertainty budget and first results of the validation. The expanded uncertainty of impedance module is about 50 μΩ/Ω at 1MHz for impedance ratios up to 1:16 and voltage drops above 10mV and the expanded uncertainty of a phase angle was about 360 μrad/MHz. Expanded uncertainty for frequency 100 kHz about 10 μΩ/Ω was reached. Typical expanded uncertainty for low impedance ratios below 1:1.1 is only 35 μΩ/Ω. Set of measurement of impedance standards of known values and a small international comparison of ac-dc and phase angle errors of current shunts were carried out to validate the bridge capabilities in wide range of impedances. The validation measurements showed the deviations of the bridge are below 35 μΩ/Ω and below 350 μrad at 1 MHz.
Název v anglickém jazyce
Four Terminal Pair Digital Sampling Impedance Bridge up to 1 MHz
Popis výsledku anglicky
This paper describes a new four terminal pair digital sampling impedance bridge designed for frequency range up to 1MHz and small impedances, such as shunts. The bridge is capable of comparing impedance standards of arbitrary ratios in a full complex plane from approximately 100 kΩ down to 50mΩ, limited by maximum achievable current 3 A. To keep low uncertainties a new multiplexer was designed and a very simple and fully automated linearity correction method based on the pair of calculable resistors was developed and validated. The paper describes the design and details of the bridge topology, basic uncertainty budget and first results of the validation. The expanded uncertainty of impedance module is about 50 μΩ/Ω at 1MHz for impedance ratios up to 1:16 and voltage drops above 10mV and the expanded uncertainty of a phase angle was about 360 μrad/MHz. Expanded uncertainty for frequency 100 kHz about 10 μΩ/Ω was reached. Typical expanded uncertainty for low impedance ratios below 1:1.1 is only 35 μΩ/Ω. Set of measurement of impedance standards of known values and a small international comparison of ac-dc and phase angle errors of current shunts were carried out to validate the bridge capabilities in wide range of impedances. The validation measurements showed the deviations of the bridge are below 35 μΩ/Ω and below 350 μrad at 1 MHz.
Klasifikace
Druh
J<sub>ost</sub> - Ostatní články v recenzovaných periodicích
CEP obor
—
OECD FORD obor
20205 - Automation and control systems
Návaznosti výsledku
Projekt
Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2019
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
IEEE Transactions on Instrumentation and Measurement
ISSN
0018-9456
e-ISSN
—
Svazek periodika
—
Číslo periodika v rámci svazku
2019
Stát vydavatele periodika
US - Spojené státy americké
Počet stran výsledku
10
Strana od-do
1-10
Kód UT WoS článku
—
EID výsledku v databázi Scopus
—