Determination of Uncertainty in Measuring Instruments in Electrical Engineering Programs
When electrical engineering students start their instrumentation and measurement course, they have previously taken calculus, physics, probability, and statistics. However, they have problems to apply the knowledge they acquired to solve problems related to electrical measurements and variables in t...
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| Format: | Article |
| Language: | English |
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Instituto Tecnológico Metropolitano
2019-09-01
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| Series: | TecnoLógicas |
| Subjects: | |
| Online Access: | https://revistas.itm.edu.co/index.php/tecnologicas/article/view/1484 |
| _version_ | 1818932863151636480 |
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| author | Álvaro Espinel-Ortega Adriana Vega-E |
| author_facet | Álvaro Espinel-Ortega Adriana Vega-E |
| author_sort | Álvaro Espinel-Ortega |
| collection | DOAJ |
| description | When electrical engineering students start their instrumentation and measurement course, they have previously taken calculus, physics, probability, and statistics. However, they have problems to apply the knowledge they acquired to solve problems related to electrical measurements and variables in the profession, such as water flows, solar radiation, wind speed and water levels. This paper shows how to integrate all the concepts involved in the process to calculate measurement uncertainty in order to improve the way the results of measurements and/or error determination processes are described. For that purpose, this study presents an applied exercise and a methodological process by means of an example, where the value of a resistance is determined taking into account the data of voltage and current measurements and using few data. The objective is to focus the process on estimating Type A and Type B uncertainty and the factors that affect the measurement processes, such as uncertainty due to random variations of the measured signals, instrument defects, imprecision of the instruments, or their resolution. During the calculation of uncertainty proposed here, students use the probabilistic knowledge they have acquired after they determined the value of the uncertainty U from the combined uncertainty u𝑐 (R), where the coverage factor is taken into account. This allows us to learn about the importance of expressing the results with higher (+) or lower (-) values of uncertainty. In the exercise carried out in this work, R = 733.31 +/- 8.10 ohm. |
| first_indexed | 2024-12-20T04:39:14Z |
| format | Article |
| id | doaj.art-1d99ac211b804c0391b552bc0280c2c9 |
| institution | Directory Open Access Journal |
| issn | 0123-7799 2256-5337 |
| language | English |
| last_indexed | 2024-12-20T04:39:14Z |
| publishDate | 2019-09-01 |
| publisher | Instituto Tecnológico Metropolitano |
| record_format | Article |
| series | TecnoLógicas |
| spelling | doaj.art-1d99ac211b804c0391b552bc0280c2c92022-12-21T19:53:10ZengInstituto Tecnológico MetropolitanoTecnoLógicas0123-77992256-53372019-09-01224617118310.22430/22565337.14841484Determination of Uncertainty in Measuring Instruments in Electrical Engineering ProgramsÁlvaro Espinel-Ortega0Adriana Vega-E1Universidad Distrital Francisco José de Caldas, ColombiaUniversidad Distrital Francisco Jose de Caldas, ColombiaWhen electrical engineering students start their instrumentation and measurement course, they have previously taken calculus, physics, probability, and statistics. However, they have problems to apply the knowledge they acquired to solve problems related to electrical measurements and variables in the profession, such as water flows, solar radiation, wind speed and water levels. This paper shows how to integrate all the concepts involved in the process to calculate measurement uncertainty in order to improve the way the results of measurements and/or error determination processes are described. For that purpose, this study presents an applied exercise and a methodological process by means of an example, where the value of a resistance is determined taking into account the data of voltage and current measurements and using few data. The objective is to focus the process on estimating Type A and Type B uncertainty and the factors that affect the measurement processes, such as uncertainty due to random variations of the measured signals, instrument defects, imprecision of the instruments, or their resolution. During the calculation of uncertainty proposed here, students use the probabilistic knowledge they have acquired after they determined the value of the uncertainty U from the combined uncertainty u𝑐 (R), where the coverage factor is taken into account. This allows us to learn about the importance of expressing the results with higher (+) or lower (-) values of uncertainty. In the exercise carried out in this work, R = 733.31 +/- 8.10 ohm.https://revistas.itm.edu.co/index.php/tecnologicas/article/view/1484measurement uncertaintymeasurement errorsengineering educationelectric variablesdesign methodology |
| spellingShingle | Álvaro Espinel-Ortega Adriana Vega-E Determination of Uncertainty in Measuring Instruments in Electrical Engineering Programs TecnoLógicas measurement uncertainty measurement errors engineering education electric variables design methodology |
| title | Determination of Uncertainty in Measuring Instruments in Electrical Engineering Programs |
| title_full | Determination of Uncertainty in Measuring Instruments in Electrical Engineering Programs |
| title_fullStr | Determination of Uncertainty in Measuring Instruments in Electrical Engineering Programs |
| title_full_unstemmed | Determination of Uncertainty in Measuring Instruments in Electrical Engineering Programs |
| title_short | Determination of Uncertainty in Measuring Instruments in Electrical Engineering Programs |
| title_sort | determination of uncertainty in measuring instruments in electrical engineering programs |
| topic | measurement uncertainty measurement errors engineering education electric variables design methodology |
| url | https://revistas.itm.edu.co/index.php/tecnologicas/article/view/1484 |
| work_keys_str_mv | AT alvaroespinelortega determinationofuncertaintyinmeasuringinstrumentsinelectricalengineeringprograms AT adrianavegae determinationofuncertaintyinmeasuringinstrumentsinelectricalengineeringprograms |