著者

鈴木 泰博

出版者

The Japan Society of Applied Electromagnetics and Mechanics

雑誌

日本AEM学会誌 (ISSN:09194452)

巻号頁・発行日

vol.27, no.4, pp.396-401, 2019 (Released:2019-12-26)

参考文献数

6

被引用文献数

1

---

Internet of Things IoT has mainly developed based on analytic and logical thinking, while sensibility processing has poorly designed. The main reason for it is the difficulties of the informatization of sensitivity information. For example, the difference between the sensibility of hearing cheerful "Good morning" and not-cheerful "Good morning" is a difference in the way of speaking. The method of speaking is the change in the strength of voice. Although in-formatization of sensibility information is generally not easy, it can informatize by focusing on changes in intensity. Therefore, we proposed the Tactile Score as a method to describe the difference in strength. By using the tactile score, we can informatize and connect the multimedia sensibility to IoT. We have applied these techniques to extract sensibility information from body movements (sensibility informotion) and transform into sounds and tactile media.

著者

大西 公平 斉藤 佑貴 福島 聡 松永 卓也 野崎 貴裕

出版者

日本AEM学会

雑誌

日本AEM学会誌 (ISSN:09194452)

巻号頁・発行日

vol.25, no.1, pp.9-16, 2017 (Released:2017-05-24)

参考文献数

13

被引用文献数

1 1

---

Real haptics has been a unsolved problem since its starting in 1940's. After many R&Ds including the early works in US and other countries, the bilateral control designed in acceleration space solves this issue. The quality of the touching and tactile sensation is heavily depends on transperancy between master side and slave side. The robust motion control which is equal to the acceleration control gives high transperancy. The real haptics is now key concept in 21st century where QOL should be the basis of the society. The various examples are also shown.

著者

津野田 亘 土方 亘 進士 忠彦

出版者

The Japan Society of Applied Electromagnetics and Mechanics

雑誌

日本AEM学会誌 (ISSN:09194452)

巻号頁・発行日

vol.23, no.1, pp.151-156, 2015 (Released:2015-05-31)

参考文献数

10

---

In order to avoid the drive line infection of implantable devices and the surgical treatment for battery replacement, an intravascular micro turbine generator using blood flow, has been proposed and developed. The micro generator consisting of a micro turbine, a magnetic fluid (MF) seal, a stent, and an electrical generator is inserted by catheter into a descending aorta, which is able to reduce the invasiveness to patients. The experimental results using a prototype generator placed in a mock circuit loop showed that the resisting pressure of the MF seal was more than 25 kPa at 2,000 rpm and the generated power was 0.12 mW under a pulsatile flow condition.

著者

前川 佐理

出版者

The Japan Society of Applied Electromagnetics and Mechanics

雑誌

日本AEM学会誌 (ISSN:09194452)

巻号頁・発行日

vol.30, no.1, pp.27-32, 2022 (Released:2022-04-20)

参考文献数

15

---

Permanent magnet synchronous motors (PMSMs) have been applied to various fields because of their various merits such as high power and torque per size and high efficiency. This paper describes the drive system for driving the PMSM from the view of current control, position sensorless control, and other technologies, and introduces recent technological trends.

著者

米津 武則 渡邉 健 鈴木 江里光

出版者

The Japan Society of Applied Electromagnetics and Mechanics

雑誌

日本AEM学会誌 (ISSN:09194452)

巻号頁・発行日

vol.24, no.3, pp.184-189, 2016 (Released:2016-12-21)

参考文献数

17

被引用文献数

1 1

---

Onboard REBCO (rare-earth barium copper oxide) HTS (high temperature superconducting) magnets for SC (superconducting) Maglev vehicles are being developed, that do not require refrigerants such as liquid helium. Their simplified refrigeration system results in reduced vehicle weight and makes it possible to reduce the gap between the SC magnets and guideway coils. HTS magnets are designed to operate with constant current leading by an excitation power source. By using the power source, magnetomotive force of SCMs (superconducting magnets) can be controlled.This paper describes effects of magnetomotive force control of HTS magnets on the SC Maglev vehicle system in terms of rating and efficiency of the Maglev LSM (linear synchronous motor). Using onboard REBCO HTS magnets with magnetomotive force control, the efficiency of the SC Maglev vehicle system can be increased with the same rating of the system.

著者

米盛 弘信 丸山 諒

出版者

日本AEM学会

雑誌

日本AEM学会誌 (ISSN:09194452)

巻号頁・発行日

vol.23, no.1, pp.213-218, 2015 (Released:2015-05-31)

参考文献数

6

被引用文献数

1

---

This paper discusses high frequency acoustic noise generated by an IH cooker. Mechanism of high frequency acoustic noise generation is clarified by the experimental study. Recently, influence of the electromagnetic wave on the human body is worried. The symptoms; user of home electronics appliances feels; are headache and nausea. There is a report that some users who are using IH cooking heater also feel these symptoms. We have discovered that the high frequency acoustic noise, which is generated from an IH cooker, indicates strong-level sound pressure. High frequency strong acoustic noise must not be ignored, because its danger on our health is reported scientifically and medical standpoints. Then, it becomes necessary to examine the suppressing method of high frequency acoustic noise. In this paper, generating mechanism of the high frequency (20 kHz ∼) acoustic noise is made clarify by the experiments. Further, we have experimentally cleared that the lid of a pan has important effect on the suppression of the high frequency acoustic noise.

著者

山下 知久 小方 正文 長嶋 賢

出版者

The Japan Society of Applied Electromagnetics and Mechanics

雑誌

日本AEM学会誌 (ISSN:09194452)

巻号頁・発行日

vol.24, no.4, pp.293-298, 2016 (Released:2017-05-10)

参考文献数

11

被引用文献数

2

---

The flywheel energy storage systems (FESS) can be stabilized the fluctuation of the output of the solar photovoltaic power generation system. FESS has been developed as a joint project of five enterprises subsidized by the New Energy and Industrial Technology Development Organization (NEDO). Key technology of FESS is the high temperature superconducting magnetic bearing (SMB). It consists of high temperature superconducting coils for its stator and high temperature superconducting bulks for its rotor. The FESS demonstration machine was reinstalled in the power plant, and the examination of the charge/discharge with solar photovoltaic power by the FESS demonstration machine was operated.

著者

今岡 淳

出版者

The Japan Society of Applied Electromagnetics and Mechanics

雑誌

日本AEM学会誌 (ISSN:09194452)

巻号頁・発行日

vol.30, no.1, pp.15-22, 2022 (Released:2022-04-20)

参考文献数

24

被引用文献数

1

---

Recently, achieving carbon neutrality which means balancing CO2 emissions and absorption is a global concern. To realize carbon neutrality, developing power electronics technologies that significantly contribute to reducing the emission of CO2 are important issues. In addition, to smoothly develop next-generation power electronics technologies, interdisciplinary action and mutual understanding from the material, components, circuit, and system levels are important. Furthermore, magnetic components used in power converters are one of the basic and important components for improving power density and efficiency. Therefore, this paper presents the latest trend of power electronics technologies and applied technology of magnetic components for power electronics.

著者

中曽根 祐司 岩崎 祥史 清水 徹 霞 総司

出版者

日本AEM学会

雑誌

日本AEM学会誌 (ISSN:09194452)

巻号頁・発行日

vol.9, no.2, pp.123-130, 2001-06-10

被引用文献数

13

著者

沖永 友輝 山本 隆彦 越地 耕二

出版者

The Japan Society of Applied Electromagnetics and Mechanics

雑誌

日本AEM学会誌 (ISSN:09194452)

巻号頁・発行日

vol.29, no.1, pp.105-110, 2021 (Released:2021-05-12)

参考文献数

13

---

In recent years, wireless power transmission technology has attracted a lot of attention. By using wireless power transmission, it is possible to easily supply power to tablets and smartphones without connecting to a cable. However, the impedance of spiral coils is difficult to derive from the external form and it is difficult to assume the impedance at the design stage. In this study, the impedance is derived based on the equation of electromagnetism with the addition of a geometric approach. As a result, we have derived a formula that makes the computational process more theoretical and easier than the conventional one.

著者

仲沢 龍翔 竹本 真紹 小笠原 悟司 折川 幸司

出版者

The Japan Society of Applied Electromagnetics and Mechanics

雑誌

日本AEM学会誌 (ISSN:09194452)

巻号頁・発行日

vol.28, no.3, pp.206-212, 2020 (Released:2021-02-04)

参考文献数

10

被引用文献数

1

---

This paper presents design studies on a hybrid excitation motor (HEM) with a field winding on a rotor. This HEM has a reverse saliency, and in addition to using reluctance torque, it aims to reduce the cost of the inverter by improving the power factor and to eliminate the cost caused by the field winding power supply and slip ring. Using the IPMSM installed in the 3rd generation PRIUS as a comparison target, the efficiency in each operating region was compared by two-dimensional finite element analysis.

著者

嶋田 修平 川崎 治 本田 さゆり 鈴木 宏和

出版者

The Japan Society of Applied Electromagnetics and Mechanics

雑誌

日本AEM学会誌 (ISSN:09194452)

巻号頁・発行日

vol.30, no.1, pp.39-44, 2022 (Released:2022-04-20)

参考文献数

7

---

Wireless Power Transfer (WPT) for spacecraft can be contributed various merits, such as workload reduction, safety improvement, high heat insulation, long lifetime. Our team developed WPT prototype for space drone. WPT used mag-netic field resonance, and class E inverter (switching frequency = 6.78MHz). We performed some critical tests (electrical and EMI). As a result of the electric test, the secondary circuit was the highest, which reached thermal equilibrium at about 50 ° C (< Tj). As a result of EMI test, WPT confirmed the range of MIL-STD-461C RE02(excluding switching frequency and its harmonics).

著者

和多田 雅哉

出版者

日本AEM学会

雑誌

日本AEM学会誌 (ISSN:09194452)

巻号頁・発行日

vol.30, no.1, pp.45, 2022 (Released:2022-04-20)

著者

鈴木 雄二

出版者

The Japan Society of Applied Electromagnetics and Mechanics

雑誌

日本AEM学会誌 (ISSN:09194452)

巻号頁・発行日

vol.22, no.3, pp.339-342, 2014 (Released:2014-10-15)

参考文献数

13

被引用文献数

4 11

---

Unlike low-cost massive energy sources for grid systems, energy harvesting is a high-added-value power generation technologies, in which small power can be extracted from energy sources in the environment. Energy harvesting technologies will make an important contribution to autonomous devices including wireless sensor nodes by providing battery-less long-lived power source. Recently, significant efforts have been paid in the country and abroad toward various applications such as building energy management system.

著者

茶位 祐樹 山本 達也 金野 泰之 川原 翔太 卜 穎剛 水野 勉 山口 豊 狩野 知義

出版者

The Japan Society of Applied Electromagnetics and Mechanics

雑誌

日本AEM学会誌 (ISSN:09194452)

巻号頁・発行日

vol.26, no.2, pp.332-337, 2018 (Released:2018-08-23)

参考文献数

13

被引用文献数

1

---

In this paper, the results of examining the number of strands for high efficiency and low heat generation of litz wire used for transformer of LLC resonant converter are described. Converter used for switching power supplies are required to be smaller and more efficient. To reduce the size of the converter, examinations have been made by increasing the frequency of the driving frequency. However, due to the high frequency, heat generation in the winding increase due to an increase in AC resistance in the transformer, which is one of the programs of high frequency. In view of this, we study reduction in heat generation by making the wire diameter of the winding constant and changing the number of strands. As a results, it is possible to improve efficiency of the LLC converter by 0.3 % and suppress heat generation of the transformer at 37 °C.

著者

戸島 正剛 松隈 正樹

出版者

The Japan Society of Applied Electromagnetics and Mechanics

雑誌

日本AEM学会誌 (ISSN:09194452)

巻号頁・発行日

vol.24, no.4, pp.299-304, 2016 (Released:2017-05-10)

参考文献数

9

被引用文献数

1

---

We have been developing new Compressed Air Energy Storage System which is trademarked as ”CAB”. The CAB -Compressed Air Battery- is the machine type battery which is expected to be used for short-time load leveling in the grid-connected operation of wind-farm and mega-solar power generation, and for peak cutting of power demands for factories and buildings. By using screw type compressors and turbines, it can be possible to follow frequent load leveling against renewable energy compared with turbo and reciprocating machineries that have difficulties in part load operation or rapid change of speed. The features of CAB system, equipment configuration, system efficiency, and characteristics of charging/discharging are mainly introduced in this paper as clean power energy storage system used compressed air.

著者

北川 亘 竹下 隆晴

出版者

The Japan Society of Applied Electromagnetics and Mechanics

雑誌

日本AEM学会誌 (ISSN:09194452)

巻号頁・発行日

vol.25, no.3, pp.319-324, 2017 (Released:2017-10-23)

参考文献数

7

---

This paper presents the principle, characteristics and its analysis for bone conduction speaker. Bone conduction speaker has used under the sound noise, openable ear environment or by impaired hearing people because it is able to send the sound vibration directly to ear through the bone. In this article, introduce the 2 type of bone conduction speaker, then it is mentioned its analysis and results.

著者

岡本 丈夫 佐々木 実 伊藤 聡 竹田 幸市 Muhammad Ilhamdi Rusydi

出版者

The Japan Society of Applied Electromagnetics and Mechanics

雑誌

日本AEM学会誌 (ISSN:09194452)

巻号頁・発行日

vol.22, no.2, pp.312-317, 2014 (Released:2014-10-06)

参考文献数

13

被引用文献数

3

---

Currently, there are many systems to support people with disability in their day to day activities. In this research, a robot arm system was designed, developed and controlled by use of an EOG (ElectroOculography) signal generated by the eye movement. The first part of the research was to establish the relationship between gaze position and EOG signal. Using Helmert transform method, the gaze position is estimated. The average error between real gaze position and estimated gaze position was ±4 cm. To recognize blink through EOG signal, Bell phenomenon was used. The blink recognition (voluntary and involuntary) experiment includes three occupants. The overall success rate of recognition of their blinks was more than 90%. Using this system long will make operators tired and results in erroneous experimental results. Thus, the switch from “control on” to “control off” was introduced in this system. The switch is activated when voluntary blink is detected. This will allow the system to improve the controllability.

著者

野口 俊介 鈴木 憲吏 百目鬼 英雄

出版者

The Japan Society of Applied Electromagnetics and Mechanics

雑誌

日本AEM学会誌 (ISSN:09194452)

巻号頁・発行日

vol.24, no.3, pp.210-215, 2016 (Released:2016-12-21)

参考文献数

11

---

A square wave excitation is the simplest method of brushless DC motor drive, but it has part inferior in terms of efficiency and vibration noise. However, the efficiency can be clearly improved by extending excitation angle and advancing current phase angle, especially the 150 degree excitation leads maximum efficiency. And the 150 degree excitation has possibility of making vibration noise characteristic improve because it leads losses decrease. In this paper, we measure the motor vibration noise characteristics in 150 degree excitation, and inspect degree of improvement of the characteristics experimentally.

著者

碓井 茂夫 野村 直樹 熊谷 光 関根 浩史

出版者

The Japan Society of Applied Electromagnetics and Mechanics

雑誌

日本AEM学会誌 (ISSN:09194452)

巻号頁・発行日

vol.25, no.4, pp.383-389, 2017 (Released:2018-01-30)

参考文献数

3

被引用文献数

4

---

SUBARU has developed EyeSight, which has Autonomous Emergency Braking (AEB), “Pre-Collision Braking System”. The concept is to minimize collision damage or if conditions allow, prevent the collision. Through a trial-and-error process, SUBARU has, and continues to enhance the performance of Pre-Collision Braking System. The latest Pre-Collision Braking System was refined to two points. The first is to hasten the reaction to crossing pedestrians coming out from behind obstacles to heighten the speed reduction effect. The other point is to improve the reaction to night-time pedestrians. The effectiveness has been raised by suppressing the drop in the recognition performance caused by peripheral darkness or the color of pedestrians' clothes. These improvements will offer a high level of safety. This report also describes details of traffic accident data, and comparing results of “with EyeSight” and “without EyeSight”.