Cancer has been the leading cause of death among Japanese since 1981, and many people die from it every year worldwide. While various measures have been taken to reduce the mortality rate of cancer, circulating tumor cel ... more
We propose a method of designing a FRIT(Fictious Reference Iterative Tuning)-based control system for a microwave plasma CVD(Chemical Vapor Deposition) apparatus used in the preparation of diamond thin films. Specificall ... more
In this paper, general-purpose uniform temperature control for heating process systems is described. The uniform temperature control function should be implemented to a local PID temperature controller. The controller is ... more
Self-repairing PID control has been proposed as an active fault-tolerant control system that tolerates component malfunctions, maintaining desired performance. In this method, an auxiliary signal with the same sign as th ... more
Adaptive output feedback control based on output feedback exponential passivity (OFEP) has a simple structure and strong robustness in regard to disturbances and system uncertainties. However, it is difficult for most no ... more
Development of Learning Materials to Foster Problem-Solving Skills Using STEAM Education in Elementary Schools
論文No: ページ数: 6 日付: 2024/03/01
著者: 村井 啓太(高島市立新旭北小学校),川田 和男(広島大学大学院教育学研究科)
キーワード : STEAM教育,計測・制御,小学校,プログラミング教育,キネティックアート STEAM education,measure and control,elementary school,programming education,kinetic art
With the arrival of the Society 5.0 era, STEAM education is attracting attention, and the Sixth Science, Technology, and Innovation Basic Plan (2021) includes STEAM education for the first time as a science and technolog ... more
In order to realize the "Society 5.0" proposed by the Cabinet Office, human resource development to create new value is attracting attention. In addition, the industrial world is promoting "model-based development (MBD), ... more
In this research, we propose a method to adaptively generate AUV trajectories using a neural controller that learns by applying a genetic algorithm. The method uses two neuro-controllers. One is learned in advance as a c ... more
The present study proposes a design methodology for blade pitch angle control of offshore wind turbines. A wind farm is formulated as a multi-agent system, and an event-driven distributed control system is designed to re ... more
In general, it is known that highly accurate weight measurement is not possible when the measuring instrument or the object to be measured is shaking. The weight is a DC component, and the AC component is noise. Hilbert ... more
Prototype of Check the Class Individually by Making Our Rounds in the Classroom Trajectory Measurement System Using Laser Range Sensor
論文No: ページ数: 2 日付: 2024/03/01
著者: 池上 毅(東京学芸大学),今井 慎一(東京学芸大学)
キーワード : 机間指導,計測,測域センサ,センシング,授業 check the class individually by making our rounds,measurement,laser range sensor,sensing,class
In order to analyze check the class individually by making our rounds in the classroom quantitatively, it is necessary to develop a system that replaces the existing analysis method of visual video recording. The purpose ... more
Latest Technology Trends in Power Semiconductor Devices
論文No: ページ数: 7 日付: 2024/03/01
著者: 吉野 学(三菱電機(株)),竹内 悠次郎((株)日立製作所),大井 幸多(富士電機(株)),中島 昭(国立研究開発法人産業技術総合研究所)
キーワード : ゲートドライバ,パワーMOSFET,IGBT,ワイドバンドギャップ半導体,SiC,GaN gate driver,power MOSFET,IGBT,wide band gap semiconductor,SiC,GaN
Efforts to achieve carbon neutrality are accelerating in order to solve global warming, a worldwide environmental problem. Efficient use of electric energy requires improved performance, higher functionality, and higher ... more
Diamond has excellent physical properties as high breakdown electric field, high thermal conductivity, and high bulk carrier mobility. From these points of view, diamond is expected as an appropriate material which can b ... more
Surge voltage at IGBT turn-off switching was analyzed with dependence on cell design parameters. Although drift layer thinning is effective to improve trade-off characteristics between turn-off loss Eoff and on-state vol ... more
The mechanical short-circuit failure mode of 1.2 kV class SiC MOSFETs was investigated by experiment and electro-thermal-mechanical technology computer-aided design (TCAD) simulation. In this work, the details of the sim ... more
Insulated gate bipolar transistors (IGBTs) are now widely used in a variety of products ranging from home appliances to power conversion equipment. This paper introduces multi-gate control techniques for IGBTs with the a ... more
This paper presents the negative drain input measurements of fully isolated nLDMOS which is fabricated by a low-cost process without any additional epitaxial growth. The critical drain current which causes the parasitic ... more
High-conductivity IGBT with Time and Space Control of Stored Carrier (TASC HiGT)
論文No: ページ数: 7 日付: 2024/03/01
著者: 三好 智之(日立製作所 研究開発グループ),鈴木 弘(日立製作所 研究開発グループ),平尾 高志(日立製作所 研究開発グループ),高田 裕亮(日立製作所 研究開発グループ),古川 智康(日立製作所 研究開発グループ),森 睦宏(日立製作所 鉄道ビジネスユニット)
キーワード : IGBT,デュアルゲート,HiGT,蓄積電荷の時空間制御 (TASC),低電力損失 IGBT,dual-gate,High-conductivity IGBT (HiGT),Time And Space Control of stored carrier (TASC),low-loss
A concept on High-conductivity IGBT with Time And Space Control of stored carrier (TASC HiGT) for pursuit of low-loss is proposed. The function is divided into high-conductivity chip (Hc) and high-speed chip (Hs) control ... more
In this paper, a newly developed 3rd Gen. RC-IGBT is presented. To reduce the power loss and improve the heat dissipation of RC-IGBTs, we introduced four approaches, controlling Gate-capacitances, thin wafer technique, h ... more
We fabricated high forward and low leakage current trench MOS-type Schottky barrier diodes (MOSSBDs) on a 12-μm-thick epitaxial layer grown by halide vapor phase epitaxy on β-Ga2O3(001) substrate. The MOSSBDs, measuring ... more
In this work, we report a newly developed analysis method to investigate the mechanism of turn-on voltage tail of IGBT, aiming at the reduction of turn-on loss (Eon). This analysis method visualizes how gate-collector ca ... more
Back-gate-controlled IGBT (BC-IGBT) which uses a manufacturable double side lithography is experimentally demonstrated. The impact of IGBT scaling on BC-IGBT is evaluated in detail. A back gate control (BC-) mode in scal ... more
We propose a new edge termination technique for high-voltage vertical GaN power devices using boron-ion implantation into a p-GaN epitaxial layer. The boron-implanted layer after annealing at 800℃ results in a half-condu ... more
We compared static and dynamic characteristics of a 1.2 kV-Class SJ-MOSFET fabricated by the multi-epitaxial growth (ME) method and the trench-filling epitaxial growth (TFE) method, which is expected to have a lower proc ... more
This paper proposes a low on-resistance and low reverse recovery charge Power MOSFET Technologies for large-capacity communication systems. We have developed 150 V class power metal-oxide-semiconductor field-effect trans ... more
We propose a sound source separation method to extract target sounds from multiple sounds observed at binaural microphones worn by a user. The proposed method estimates the respective sound source position from the slope ... more
In the aging society, especially those with eye diseases, often forget to take medicine or take wrong medicine. In the new drug approval process, objective and accurate medication records have become very important. To i ... more
We investigated the possibility of eye blink detection for one person using acceleration sensors fixed on a diving mask. It was found that the two accelerations measured on the upper and lower parts of the mask skirt wer ... more
IEEJ Transactions on Electronics, Information and Systems Vol.144 No.3 (2024) Special IssueT on “Smart Systems and Instrument Control Technology” Special Issue U on “The latest silicon and wide bandgap power semiconductor
technologies”