Identification of Q value and angular frequency of smart gear antenna using the resonant return loss of the receiving antenna

Abstract A wireless smart gear system has been being developed as a gear health monitoring system. This system works based on the magnetic coupling between its two major elements consisting of a monitoring antenna and a smart gear. In operation, the smart gear works as a working gear in the power tr...

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Main Authors: Thanh-Tung Mac, Daisuke Iba, Yusuke Matsushita, Takeru Inoue, Nanako Miura, Arata Masuda, Ichiro Moriwaki
Format: Article
Language:English
Published: Springer 2022-09-01
Series:SN Applied Sciences
Subjects:
Online Access:https://doi.org/10.1007/s42452-022-05137-2
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author Thanh-Tung Mac
Daisuke Iba
Yusuke Matsushita
Takeru Inoue
Nanako Miura
Arata Masuda
Ichiro Moriwaki
author_facet Thanh-Tung Mac
Daisuke Iba
Yusuke Matsushita
Takeru Inoue
Nanako Miura
Arata Masuda
Ichiro Moriwaki
author_sort Thanh-Tung Mac
collection DOAJ
description Abstract A wireless smart gear system has been being developed as a gear health monitoring system. This system works based on the magnetic coupling between its two major elements consisting of a monitoring antenna and a smart gear. In operation, the smart gear works as a working gear in the power transmission system while the monitoring antenna monitors this gear continuously. Specifically, since the monitoring antenna is fixed and kept connecting to a network analyzer during the gear operation, it allows the magnetic coupling to occur and remain thoroughly. As a result, the return loss signal of the monitoring antenna becomes a resonant return loss data of the smart gear system. In this paper, the authors propose a method to use this resonant return loss signal for identifying two parameters called the $$Q$$ Q value and the angular frequency of the smart gear side antenna. There are three cases of magnetic coupling that have been considered. These cases are called Open, Short, and Loaded by a 50 [Ω] resistor where the characteristics of the antenna on the smart gear side are changed via its connector by leaving Open or connecting to a Short and a 50 [Ω] resistor modules, respectively. The results indicate that the method is effective for parameter identification of the $$Q$$ Q value and the angular frequency of the smart gear side antenna for all three cases. Moreover, the analysis of the validated $$Q$$ Q value and the angular frequency also indicates the relation between these two characteristic values and the practical conditions of the smart gear. This finding consolidates the effectiveness of our developing wireless smart gear system. Article Highlights This article proposes a parameter identification method for a developing smart gear health monitoring system. By only using the resonant return loss data obtained from the monitoring antenna, there are two characteristic values of the smart gear have been achieved. This article also introduces a completed return loss equation of a magnetically coupled system. This return loss equation is helpful for the computation of characteristic parameters of the magnetically coupled system such as a wireless power transfer system or a coupled antenna system. The results figure out that the identified characteristic parameters and the physical condition of the smart gear side’s antenna circuit are related to each other. This finding affirms the effectiveness of not only the proposed parameter identification method but also the developing smart gear system.
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spelling doaj.art-f183a3914c7e4134836058c8448df6942022-12-22T04:24:51ZengSpringerSN Applied Sciences2523-39632523-39712022-09-0141011910.1007/s42452-022-05137-2Identification of Q value and angular frequency of smart gear antenna using the resonant return loss of the receiving antennaThanh-Tung Mac0Daisuke Iba1Yusuke Matsushita2Takeru Inoue3Nanako Miura4Arata Masuda5Ichiro Moriwaki6Department of Mechanical Engineering, Kyoto Institute of TechnologyDepartment of Mechanical Engineering, Kyoto Institute of TechnologyDepartment of Mechanical Engineering, Kyoto Institute of TechnologyDepartment of Mechanical Engineering, Kyoto Institute of TechnologyDepartment of Mechanical Engineering, Kyoto Institute of TechnologyDepartment of Mechanical Engineering, Kyoto Institute of TechnologyDepartment of Mechanical Engineering, Kyoto Institute of TechnologyAbstract A wireless smart gear system has been being developed as a gear health monitoring system. This system works based on the magnetic coupling between its two major elements consisting of a monitoring antenna and a smart gear. In operation, the smart gear works as a working gear in the power transmission system while the monitoring antenna monitors this gear continuously. Specifically, since the monitoring antenna is fixed and kept connecting to a network analyzer during the gear operation, it allows the magnetic coupling to occur and remain thoroughly. As a result, the return loss signal of the monitoring antenna becomes a resonant return loss data of the smart gear system. In this paper, the authors propose a method to use this resonant return loss signal for identifying two parameters called the $$Q$$ Q value and the angular frequency of the smart gear side antenna. There are three cases of magnetic coupling that have been considered. These cases are called Open, Short, and Loaded by a 50 [Ω] resistor where the characteristics of the antenna on the smart gear side are changed via its connector by leaving Open or connecting to a Short and a 50 [Ω] resistor modules, respectively. The results indicate that the method is effective for parameter identification of the $$Q$$ Q value and the angular frequency of the smart gear side antenna for all three cases. Moreover, the analysis of the validated $$Q$$ Q value and the angular frequency also indicates the relation between these two characteristic values and the practical conditions of the smart gear. This finding consolidates the effectiveness of our developing wireless smart gear system. Article Highlights This article proposes a parameter identification method for a developing smart gear health monitoring system. By only using the resonant return loss data obtained from the monitoring antenna, there are two characteristic values of the smart gear have been achieved. This article also introduces a completed return loss equation of a magnetically coupled system. This return loss equation is helpful for the computation of characteristic parameters of the magnetically coupled system such as a wireless power transfer system or a coupled antenna system. The results figure out that the identified characteristic parameters and the physical condition of the smart gear side’s antenna circuit are related to each other. This finding affirms the effectiveness of not only the proposed parameter identification method but also the developing smart gear system.https://doi.org/10.1007/s42452-022-05137-2Gear printed sensorPlastic gear health monitoringFailure detectionQ value identificationMagnetic resonant couplingReturn loss function
spellingShingle Thanh-Tung Mac
Daisuke Iba
Yusuke Matsushita
Takeru Inoue
Nanako Miura
Arata Masuda
Ichiro Moriwaki
Identification of Q value and angular frequency of smart gear antenna using the resonant return loss of the receiving antenna
SN Applied Sciences
Gear printed sensor
Plastic gear health monitoring
Failure detection
Q value identification
Magnetic resonant coupling
Return loss function
title Identification of Q value and angular frequency of smart gear antenna using the resonant return loss of the receiving antenna
title_full Identification of Q value and angular frequency of smart gear antenna using the resonant return loss of the receiving antenna
title_fullStr Identification of Q value and angular frequency of smart gear antenna using the resonant return loss of the receiving antenna
title_full_unstemmed Identification of Q value and angular frequency of smart gear antenna using the resonant return loss of the receiving antenna
title_short Identification of Q value and angular frequency of smart gear antenna using the resonant return loss of the receiving antenna
title_sort identification of q value and angular frequency of smart gear antenna using the resonant return loss of the receiving antenna
topic Gear printed sensor
Plastic gear health monitoring
Failure detection
Q value identification
Magnetic resonant coupling
Return loss function
url https://doi.org/10.1007/s42452-022-05137-2
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