Pub Date : 2019-10-01DOI: 10.1109/IECON.2019.8926928
K. Gyftakis, A. Cardoso
Stator electrical faults are considered the most severe and challenging to detect among the various induction motor faults. This is due to the fast evolving severity level that leads from an early inter-turn fault to the machine breakdown. Many works have been published over the years presenting a variety of diagnostic techniques to detect this fault. However, the fault level severity is kept high enough to allow for the diagnosis neglecting the fact that at that severity level the machine will fail and thus diagnosis of the fault is useless. This paper challenges the existing technical know-how in the subject, while attempting to detect the fault at very low severity levels. It will be shown with extensive experimental testing and analysis that many well established methods are completely unreliable for this task. Finally, the authors propose a novel method that is able not only to detect the fault reliably but is also sensitive to the fault level severity.
{"title":"Reliable Detection of Very Low Severity Level Stator Inter-Turn Faults in Induction Motors","authors":"K. Gyftakis, A. Cardoso","doi":"10.1109/IECON.2019.8926928","DOIUrl":"https://doi.org/10.1109/IECON.2019.8926928","url":null,"abstract":"Stator electrical faults are considered the most severe and challenging to detect among the various induction motor faults. This is due to the fast evolving severity level that leads from an early inter-turn fault to the machine breakdown. Many works have been published over the years presenting a variety of diagnostic techniques to detect this fault. However, the fault level severity is kept high enough to allow for the diagnosis neglecting the fact that at that severity level the machine will fail and thus diagnosis of the fault is useless. This paper challenges the existing technical know-how in the subject, while attempting to detect the fault at very low severity levels. It will be shown with extensive experimental testing and analysis that many well established methods are completely unreliable for this task. Finally, the authors propose a novel method that is able not only to detect the fault reliably but is also sensitive to the fault level severity.","PeriodicalId":187719,"journal":{"name":"IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society","volume":"156 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115746277","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}
Pub Date : 2019-10-01DOI: 10.1109/IECON.2019.8926853
L. D. Leonardo, Mircea Popescu, M. Tursini, M. Villani
This paper presents the results obtained by the finite elements model co-simulation technique in the transient analysis of an electric drive for advanced traction applications. The case study refers to a 200kW induction motor drive designed for a premium electric vehicle in the frame of the Horizon 2020 “ReFreeDrive” project (Rare earth Free e-Drives featuring low cost manufacturing). The transient performance and the operating limits are evaluated when a field-oriented control strategy based on the lumped parameters model of the machine is used. The co-simulation involves the ANSYS/Simplorer and MATLAB/Simulink environments. The finite element motor model developed in ANSYS is controlled by the rotor flux-oriented controller with axes decoupling built in Simulink. A lumped parameters motor model is also derived to design the control parameters and implemented in Simulink for comparison respect to the co-simulation approach. The results highlight the influence of the controller detuning for the correct prediction of the voltage limit operation at steady state.
{"title":"Finite Elements Model Co-Simulation of an Induction Motor Drive for Traction Application","authors":"L. D. Leonardo, Mircea Popescu, M. Tursini, M. Villani","doi":"10.1109/IECON.2019.8926853","DOIUrl":"https://doi.org/10.1109/IECON.2019.8926853","url":null,"abstract":"This paper presents the results obtained by the finite elements model co-simulation technique in the transient analysis of an electric drive for advanced traction applications. The case study refers to a 200kW induction motor drive designed for a premium electric vehicle in the frame of the Horizon 2020 “ReFreeDrive” project (Rare earth Free e-Drives featuring low cost manufacturing). The transient performance and the operating limits are evaluated when a field-oriented control strategy based on the lumped parameters model of the machine is used. The co-simulation involves the ANSYS/Simplorer and MATLAB/Simulink environments. The finite element motor model developed in ANSYS is controlled by the rotor flux-oriented controller with axes decoupling built in Simulink. A lumped parameters motor model is also derived to design the control parameters and implemented in Simulink for comparison respect to the co-simulation approach. The results highlight the influence of the controller detuning for the correct prediction of the voltage limit operation at steady state.","PeriodicalId":187719,"journal":{"name":"IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116874526","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}
Pub Date : 2019-10-01DOI: 10.1109/IECON.2019.8927726
Gyunghoon Park, Jung Hoon Kim, Yonghwan Oh
In this paper, we address the problem of generating a trajectory of the zero-moment point (ZMP) and the rate of angular momentum for a bipedal robot in the sagittal plane, with which the balance of the robot is recovered from external push. Unlike most previous works that adjusted a pre-designed ZMP or solved (possibly too heavy) nonlinear optimization problems, our main purpose is to develop a fully reactive step generator in the sense that (a) no pre-calculation of nominal trajectory is required, and (b) the algorithm is simple enough to operate in real time, only by utilizing the current state of the robot. For the design, it is seen by reinterpreting the centroidal dynamics in the hybrid model framework that the balance recovery problem can be recast as the problem of stabilizing a hybrid-type (linear) inverted pendulum model. On the basis of the concept of the divergent component of motion, a simple hybrid control law is then constructed to stabilize the hybrid system, which serves as a step generator that automatically determines where and when to step. This paper briefly sketches a mathematical proof on the performance of the proposed generator from a control-theoretic perspective, which is also supported by simulation results.
{"title":"Towards Fully Reactive Multi-step Generation for Humanoids against Instantaneous Push: A Case of Walking in Place in Sagittal Plane","authors":"Gyunghoon Park, Jung Hoon Kim, Yonghwan Oh","doi":"10.1109/IECON.2019.8927726","DOIUrl":"https://doi.org/10.1109/IECON.2019.8927726","url":null,"abstract":"In this paper, we address the problem of generating a trajectory of the zero-moment point (ZMP) and the rate of angular momentum for a bipedal robot in the sagittal plane, with which the balance of the robot is recovered from external push. Unlike most previous works that adjusted a pre-designed ZMP or solved (possibly too heavy) nonlinear optimization problems, our main purpose is to develop a fully reactive step generator in the sense that (a) no pre-calculation of nominal trajectory is required, and (b) the algorithm is simple enough to operate in real time, only by utilizing the current state of the robot. For the design, it is seen by reinterpreting the centroidal dynamics in the hybrid model framework that the balance recovery problem can be recast as the problem of stabilizing a hybrid-type (linear) inverted pendulum model. On the basis of the concept of the divergent component of motion, a simple hybrid control law is then constructed to stabilize the hybrid system, which serves as a step generator that automatically determines where and when to step. This paper briefly sketches a mathematical proof on the performance of the proposed generator from a control-theoretic perspective, which is also supported by simulation results.","PeriodicalId":187719,"journal":{"name":"IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116921484","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}
Pub Date : 2019-10-01DOI: 10.1109/IECON.2019.8927470
Zhiyong Chen, An Luo, Xucheng Huang
For assessing the influence of feeder's distributed parameter on the grid-connected current which is emitted by distributed generation power plants (DGPP), hyperbolic function should be introduced in the process of feeder modeling. However, the Taylor approximation of the hyperbolic function makes the Norton equivalent of the DGPP possess a certain number of poles in the right-half s plane. This pole configuration violates the impedance-based stability criterion to be applied. To this end, we proposed equivalently transforming the hyperbolic function via Euler's formula. The advantage of this transformation includes the following two aspects: 1) it could establish the direct correlation between time-domain eigenvalues and system frequencies; 2) it enables us to assess the relative stability of systems in terms of pole-zero method. By using the proposed Eu-ler's formula-based stability-analysis approach, we found that: 1) the underlying causes of the wideband harmonic resonances correlated with the motion patterns of the eigenvalues on the s plane; 2) with the system frequencies increasing, the frequencies of the arc resonance peaks exactly corresponded to the frequencies which made the dominant pole traverse the negative real axis in the s plane from top to bottom.
{"title":"Relative Stability Assessment for Wideband Harmonic Resonances in Distributed Generation Power Plants","authors":"Zhiyong Chen, An Luo, Xucheng Huang","doi":"10.1109/IECON.2019.8927470","DOIUrl":"https://doi.org/10.1109/IECON.2019.8927470","url":null,"abstract":"For assessing the influence of feeder's distributed parameter on the grid-connected current which is emitted by distributed generation power plants (DGPP), hyperbolic function should be introduced in the process of feeder modeling. However, the Taylor approximation of the hyperbolic function makes the Norton equivalent of the DGPP possess a certain number of poles in the right-half s plane. This pole configuration violates the impedance-based stability criterion to be applied. To this end, we proposed equivalently transforming the hyperbolic function via Euler's formula. The advantage of this transformation includes the following two aspects: 1) it could establish the direct correlation between time-domain eigenvalues and system frequencies; 2) it enables us to assess the relative stability of systems in terms of pole-zero method. By using the proposed Eu-ler's formula-based stability-analysis approach, we found that: 1) the underlying causes of the wideband harmonic resonances correlated with the motion patterns of the eigenvalues on the s plane; 2) with the system frequencies increasing, the frequencies of the arc resonance peaks exactly corresponded to the frequencies which made the dominant pole traverse the negative real axis in the s plane from top to bottom.","PeriodicalId":187719,"journal":{"name":"IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117210145","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}
Pub Date : 2019-10-01DOI: 10.1109/IECON.2019.8927514
Yuki Onozuka, Minoru Oba, M. Okui, Taro Nakamura
Using a head-mounted display, users can immerse themselves in virtual reality space and users can via the visual recognition of virtual objects. However, users do not experience the same haptic perception when they interact with these objects, that they do with actual objects. Force feedback devices can render haptic perception. They are classified into desktop and wearable types. A wearable 1 degree of freedom force feedback device using magnetorheological fluid brake, magnetorheological clutches, and pneumatic artificial muscles has been previously developed and it was confirmed that the device can render elasticity, friction, and viscosity. In addition, a wearable 4 degrees of freedom force feedback device using magnetorheological fluid clutches and pneumatic artificial muscles that can render elasticity was also previously developed. However, it was not established that the device could render friction, and viscosity using magnetorheological fluid clutches and pneumatic artificial muscles. In this report, it is confirmed that such a device can render friction and viscosity using magnetorheological fluid clutches and pneumatic artificial muscles without the need for magnetorheological fluid brake.
{"title":"Rendering friction and viscosity using a wearable 4 degrees of freedom force feedback device with magnetorheological fluid clutches and pneumatic artificial muscles","authors":"Yuki Onozuka, Minoru Oba, M. Okui, Taro Nakamura","doi":"10.1109/IECON.2019.8927514","DOIUrl":"https://doi.org/10.1109/IECON.2019.8927514","url":null,"abstract":"Using a head-mounted display, users can immerse themselves in virtual reality space and users can via the visual recognition of virtual objects. However, users do not experience the same haptic perception when they interact with these objects, that they do with actual objects. Force feedback devices can render haptic perception. They are classified into desktop and wearable types. A wearable 1 degree of freedom force feedback device using magnetorheological fluid brake, magnetorheological clutches, and pneumatic artificial muscles has been previously developed and it was confirmed that the device can render elasticity, friction, and viscosity. In addition, a wearable 4 degrees of freedom force feedback device using magnetorheological fluid clutches and pneumatic artificial muscles that can render elasticity was also previously developed. However, it was not established that the device could render friction, and viscosity using magnetorheological fluid clutches and pneumatic artificial muscles. In this report, it is confirmed that such a device can render friction and viscosity using magnetorheological fluid clutches and pneumatic artificial muscles without the need for magnetorheological fluid brake.","PeriodicalId":187719,"journal":{"name":"IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121237071","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}
Pub Date : 2019-10-01DOI: 10.1109/IECON.2019.8927473
C. WilmarA.Pineda, C. Rech
This paper proposes a modified five-level active neutral point clamped inverter with output voltage boosting capability. The operating principle is based on switched-capacitor technique, which allows to reduce the dc-link voltage level to half of the conventional topologies. Additionally, the proposed five-level inverter reduces the devices voltage stress and consequently minimizes the total standing voltage of the circuit. The inverter can balance the dc-link and floating capacitors through a proposed modulation scheme without employing complex control methods or additional circuits and sensors. Experimental results are obtained from a 1.2 kW laboratory prototype to demonstrate the system operation.
{"title":"Modified Five-Level ANPC Inverter with Output Voltage Boosting Capability","authors":"C. WilmarA.Pineda, C. Rech","doi":"10.1109/IECON.2019.8927473","DOIUrl":"https://doi.org/10.1109/IECON.2019.8927473","url":null,"abstract":"This paper proposes a modified five-level active neutral point clamped inverter with output voltage boosting capability. The operating principle is based on switched-capacitor technique, which allows to reduce the dc-link voltage level to half of the conventional topologies. Additionally, the proposed five-level inverter reduces the devices voltage stress and consequently minimizes the total standing voltage of the circuit. The inverter can balance the dc-link and floating capacitors through a proposed modulation scheme without employing complex control methods or additional circuits and sensors. Experimental results are obtained from a 1.2 kW laboratory prototype to demonstrate the system operation.","PeriodicalId":187719,"journal":{"name":"IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127145743","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}
Pub Date : 2019-10-01DOI: 10.1109/IECON.2019.8926955
A. P. Kumar, G. S. Kumar, D. Sreenivasarao
Two level Voltage Source Inverters (VSI) are the viable solution for Distribution Static Compensator (DSTATCOM) applications in secondary distribution system, where the voltage levels are either 415 V or 230 V. However, the limitations of two level VSIs in primary distribution system (3.3 kV - 33 kV) are the requirement of higher rating switches or series connection of lower rating switches, which motivates the replacement two level VSIs with multi-level inverters (MLI). Therefore, in this paper Model Predictive Control (MPC) of four level Nested Neutral Point Clamped (NNPC) MLI based DSTATCOM is proposed. In the proposed work cost function is framed as a combination of DSTATCOM currents and capacitor voltages which can compensate the current related power quality issues as well as eliminate the requirement of additional PI controllers for voltage regulation of flying capacitors. Weighting factors Tuning during multi constraint case is a tedious task. To overcome this limitation, a Multi-Criteria Decision Making (MCDM) method namely simple additive weighting method is used in the proposed work which reduces the difficulties in the weighting factor tuning. The performance of the proposed control algorithm is evaluated using simulation which shows the efficacy of the proposed control algorithm.
{"title":"Model Predictive Control of Four Level NNPC DSTATCOM for Power Quality Improvement in Distribution System","authors":"A. P. Kumar, G. S. Kumar, D. Sreenivasarao","doi":"10.1109/IECON.2019.8926955","DOIUrl":"https://doi.org/10.1109/IECON.2019.8926955","url":null,"abstract":"Two level Voltage Source Inverters (VSI) are the viable solution for Distribution Static Compensator (DSTATCOM) applications in secondary distribution system, where the voltage levels are either 415 V or 230 V. However, the limitations of two level VSIs in primary distribution system (3.3 kV - 33 kV) are the requirement of higher rating switches or series connection of lower rating switches, which motivates the replacement two level VSIs with multi-level inverters (MLI). Therefore, in this paper Model Predictive Control (MPC) of four level Nested Neutral Point Clamped (NNPC) MLI based DSTATCOM is proposed. In the proposed work cost function is framed as a combination of DSTATCOM currents and capacitor voltages which can compensate the current related power quality issues as well as eliminate the requirement of additional PI controllers for voltage regulation of flying capacitors. Weighting factors Tuning during multi constraint case is a tedious task. To overcome this limitation, a Multi-Criteria Decision Making (MCDM) method namely simple additive weighting method is used in the proposed work which reduces the difficulties in the weighting factor tuning. The performance of the proposed control algorithm is evaluated using simulation which shows the efficacy of the proposed control algorithm.","PeriodicalId":187719,"journal":{"name":"IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society","volume":"139 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127211500","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}
Pub Date : 2019-10-01DOI: 10.1109/IECON.2019.8927654
Cheng Ma, Jin Zhu, Yanping Yin, Xiaolong Li
At present, the chip structure of Quartz Crystal Microbalance (QCM) is mostly prepared by preparing a circular gold electrode on the top of the quartz crystal and a circular gold electrode on the bottom of the quartz crystal, and the QCM is vibrated by applying an alternating voltage to the upper and lower electrodes. In this paper, a chip structure of a toroidal indium tin oxide electrode is proposed. The resonant frequency of the chip is larger, and the QCM resonant frequency signal output is more stable. The new QCM chip is compared to a QCM chip of two other electrode configurations. The same mass load is placed over the electrodes of each chip. The results show that the quartz crystal microbalance of the ring indium tin oxide electrode has more frequency shift and higher sensitivity under the same adsorption mass. The advantage of the ring electrode structure is that the bioprobe can be directly arranged in the central region of the ring electrode, which is equivalent to being directly prepared on the quartz crystal microbalance, which avoids corrosion of the electrode during the process of fixing the bioprobe and affects the conductivity of the electrode.
{"title":"Design of Quartz Crystal Microbalance with ring electrode","authors":"Cheng Ma, Jin Zhu, Yanping Yin, Xiaolong Li","doi":"10.1109/IECON.2019.8927654","DOIUrl":"https://doi.org/10.1109/IECON.2019.8927654","url":null,"abstract":"At present, the chip structure of Quartz Crystal Microbalance (QCM) is mostly prepared by preparing a circular gold electrode on the top of the quartz crystal and a circular gold electrode on the bottom of the quartz crystal, and the QCM is vibrated by applying an alternating voltage to the upper and lower electrodes. In this paper, a chip structure of a toroidal indium tin oxide electrode is proposed. The resonant frequency of the chip is larger, and the QCM resonant frequency signal output is more stable. The new QCM chip is compared to a QCM chip of two other electrode configurations. The same mass load is placed over the electrodes of each chip. The results show that the quartz crystal microbalance of the ring indium tin oxide electrode has more frequency shift and higher sensitivity under the same adsorption mass. The advantage of the ring electrode structure is that the bioprobe can be directly arranged in the central region of the ring electrode, which is equivalent to being directly prepared on the quartz crystal microbalance, which avoids corrosion of the electrode during the process of fixing the bioprobe and affects the conductivity of the electrode.","PeriodicalId":187719,"journal":{"name":"IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127281419","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}
Pub Date : 2019-10-01DOI: 10.1109/IECON.2019.8927611
Motoki Mizusako, Yutaka Tsuzuki, M. Yasushi, H. Hashimoto
Recently, accidents relating to automobiles have been decreasing due to the development of advanced safety technologies for automobiles and the legal system for dangerous driving. However, the ratio of traffic accidents caused by human errors such as careless and dozing driving in the whole car accidents have been increasing. There has been a requirement for developing sleepiness detection system promptly. In this research, the authors propose a method of estimating driver sleepiness in a car using biological information. The driver while driving is trying to stay awake, fighting against sleepiness that affects the physiological index. By using this index, the authors made sleepiness estimation formula and conducted evaluation experiments. The results show that the sleepiness estimation rate is improved in comparison with a conventional method. It suggests the usefulness of the proposed method.
{"title":"Sleepiness Estimation Method of Driver Considering Stay-Awake Effort","authors":"Motoki Mizusako, Yutaka Tsuzuki, M. Yasushi, H. Hashimoto","doi":"10.1109/IECON.2019.8927611","DOIUrl":"https://doi.org/10.1109/IECON.2019.8927611","url":null,"abstract":"Recently, accidents relating to automobiles have been decreasing due to the development of advanced safety technologies for automobiles and the legal system for dangerous driving. However, the ratio of traffic accidents caused by human errors such as careless and dozing driving in the whole car accidents have been increasing. There has been a requirement for developing sleepiness detection system promptly. In this research, the authors propose a method of estimating driver sleepiness in a car using biological information. The driver while driving is trying to stay awake, fighting against sleepiness that affects the physiological index. By using this index, the authors made sleepiness estimation formula and conducted evaluation experiments. The results show that the sleepiness estimation rate is improved in comparison with a conventional method. It suggests the usefulness of the proposed method.","PeriodicalId":187719,"journal":{"name":"IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127347815","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}
Pub Date : 2019-10-01DOI: 10.1109/IECON.2019.8927567
Hiroaki Ota, T. Ise, Jia Liu, Y. Miura
The objective of this study is to transfer multiphase power wirelessly in a simple system using frequency modulation (FM) technique. With the progress of wireless power transfer (WPT), research works are conducted to transfer power to motors wirelessly, such as application in in-wheel motors and articulated arm robots. For three-phase motors, multi-phase WPT is required. In conventional systems, the receiver of a multi-phase WPT system tends to be large because a complex circuit and large capacitor are mounted on the receiver. In this research, the aim is to reduce the size and weight of the receiver by adopting FM technique. The proposed circuit has a simple structure with a small number of components, and effective multi-phase wireless power transfer is verified through simulation and experiments.
{"title":"A Feasibility Study on Multi-Phase Wireless Power Transfer Using Frequency Modulation","authors":"Hiroaki Ota, T. Ise, Jia Liu, Y. Miura","doi":"10.1109/IECON.2019.8927567","DOIUrl":"https://doi.org/10.1109/IECON.2019.8927567","url":null,"abstract":"The objective of this study is to transfer multiphase power wirelessly in a simple system using frequency modulation (FM) technique. With the progress of wireless power transfer (WPT), research works are conducted to transfer power to motors wirelessly, such as application in in-wheel motors and articulated arm robots. For three-phase motors, multi-phase WPT is required. In conventional systems, the receiver of a multi-phase WPT system tends to be large because a complex circuit and large capacitor are mounted on the receiver. In this research, the aim is to reduce the size and weight of the receiver by adopting FM technique. The proposed circuit has a simple structure with a small number of components, and effective multi-phase wireless power transfer is verified through simulation and experiments.","PeriodicalId":187719,"journal":{"name":"IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124856038","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}
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