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Accurate Measurements of the Rotational Velocities of Brushless Direct-Current Motors by Using an Ultrasensitive Magnetoimpedance Sensing System

Reports on measurements of the rotational velocity by using giant magnetoimpedance (GMI) sensors are rarely seen. In this study, a rotational-velocity sensing system based on GMI effect was established to measure rotational velocities of brushless direct-current motors. Square waves and sawtooth wav...

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Detalles Bibliográficos
Autores principales: Wang, Tao, Wang, Bicong, Luo, Yufeng, Li, Hengyu, Rao, Jinjun, Wu, Zhizheng, Liu, Mei
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6952991/
https://www.ncbi.nlm.nih.gov/pubmed/31817762
http://dx.doi.org/10.3390/mi10120859
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author Wang, Tao
Wang, Bicong
Luo, Yufeng
Li, Hengyu
Rao, Jinjun
Wu, Zhizheng
Liu, Mei
author_facet Wang, Tao
Wang, Bicong
Luo, Yufeng
Li, Hengyu
Rao, Jinjun
Wu, Zhizheng
Liu, Mei
author_sort Wang, Tao
collection PubMed
description Reports on measurements of the rotational velocity by using giant magnetoimpedance (GMI) sensors are rarely seen. In this study, a rotational-velocity sensing system based on GMI effect was established to measure rotational velocities of brushless direct-current motors. Square waves and sawtooth waves were observed due to the rotation of the shaft. We also found that the square waves gradually became sawtooth waves with increasing the measurement distance and rotational velocity. The GMI-based rotational-velocity measurement results (1000–4300 r/min) were further confirmed using the Hall sensor. This GMI sensor is capable of measuring ultrahigh rotational velocity of 84,000 r/min with a large voltage response of 5 V, even when setting a large measurement distance of 9 cm. Accordingly, the GMI sensor is very useful for sensitive measurements of high rotational velocity.
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spelling pubmed-69529912020-01-23 Accurate Measurements of the Rotational Velocities of Brushless Direct-Current Motors by Using an Ultrasensitive Magnetoimpedance Sensing System Wang, Tao Wang, Bicong Luo, Yufeng Li, Hengyu Rao, Jinjun Wu, Zhizheng Liu, Mei Micromachines (Basel) Article Reports on measurements of the rotational velocity by using giant magnetoimpedance (GMI) sensors are rarely seen. In this study, a rotational-velocity sensing system based on GMI effect was established to measure rotational velocities of brushless direct-current motors. Square waves and sawtooth waves were observed due to the rotation of the shaft. We also found that the square waves gradually became sawtooth waves with increasing the measurement distance and rotational velocity. The GMI-based rotational-velocity measurement results (1000–4300 r/min) were further confirmed using the Hall sensor. This GMI sensor is capable of measuring ultrahigh rotational velocity of 84,000 r/min with a large voltage response of 5 V, even when setting a large measurement distance of 9 cm. Accordingly, the GMI sensor is very useful for sensitive measurements of high rotational velocity. MDPI 2019-12-06 /pmc/articles/PMC6952991/ /pubmed/31817762 http://dx.doi.org/10.3390/mi10120859 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Wang, Tao
Wang, Bicong
Luo, Yufeng
Li, Hengyu
Rao, Jinjun
Wu, Zhizheng
Liu, Mei
Accurate Measurements of the Rotational Velocities of Brushless Direct-Current Motors by Using an Ultrasensitive Magnetoimpedance Sensing System
title Accurate Measurements of the Rotational Velocities of Brushless Direct-Current Motors by Using an Ultrasensitive Magnetoimpedance Sensing System
title_full Accurate Measurements of the Rotational Velocities of Brushless Direct-Current Motors by Using an Ultrasensitive Magnetoimpedance Sensing System
title_fullStr Accurate Measurements of the Rotational Velocities of Brushless Direct-Current Motors by Using an Ultrasensitive Magnetoimpedance Sensing System
title_full_unstemmed Accurate Measurements of the Rotational Velocities of Brushless Direct-Current Motors by Using an Ultrasensitive Magnetoimpedance Sensing System
title_short Accurate Measurements of the Rotational Velocities of Brushless Direct-Current Motors by Using an Ultrasensitive Magnetoimpedance Sensing System
title_sort accurate measurements of the rotational velocities of brushless direct-current motors by using an ultrasensitive magnetoimpedance sensing system
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6952991/
https://www.ncbi.nlm.nih.gov/pubmed/31817762
http://dx.doi.org/10.3390/mi10120859
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