Electrical and Electronic Engineering

Electrical and Electronic Engineering

 

 

Faculty and StaffIt moves to another site in school.

 

CurriculumIt moves to another site in school. (Japanese page only)

 

Research Activities

Overview

Electrical and electronic engineering plays an important role in the recent revolution of science and technology, and is still rapidly developing. To meet those revolution and development, educational systems and research fields in the Department of Electrical and Electronic Engineering cover a wide variety of sciences and technologies to electrical and electronic engineering from fundamentals to advanced applications.

Our department consists of four major research groups: Material Sciences and Device, Electric Energy Engineering, Communications and Controls, and Intelligent Networks and Computer Sciences. Some of the faculty members are deeply involved in Nitride Photonic Semiconductor Laboratory that is one of the satellite venture business laboratories of the national university of Japan.

 

Educational Topics

All of the undergraduate students are required to obtain mandatory credits on the fundamental theories of electrical and electronic engineering like Electrical Circuit Theory and Electromagnetic Theory including exercises, on some of Course Laboratories, and on mathematics like Differential Equations. The other subjects will be selected by individual student according to his/her interest. Daytime students are also required to be involved in one of the research projects offered by the department to complete the graduation thesis. For the nighttime course students, Electrical and Electronic Engineering Seminar is offered in stead of the graduation thesis project. An English conversation class organized by native speakers is offered to both Japanese and foreign students to improve their skills of English conversation. Both undergraduate and graduate students have an opportunity for taking part in the lectures and seminars offered by our domestic and foreign guests from other universities, companies, and research institutes, and learn what are going on in the practical world of electrical and electronic engineering.

A tour to visit manufacturers and research institutes for several days, which is organized by daytime students themselves, is valuable experience to learn how things they are learning are applied to the practical industrial processes.

A lot of undergraduate and graduate students from many foreign countries are studying in our department, and experiencing active exchange of their knowledge, cultures, etc. with faculty, staff and other students. A Japanese course is opened for foregn students and their families.

 

Current Research Topics

Material and Device Science

Plasma physics and solid state physics are major field of research in this group. Current research topics include plasma physics, nuclear fusion, electric discharge, semiconductor crystal growth, thin film deposition and characterization, and photonic devices.

 

  • Plasma surface interactions in controlled fusion devices; modeling and simulation of electronic and atomic collisions in gases, solids and plasmas. (K. Ohya, R. Kawakami)
  • Wide bandgap semiconductor electron devices for highvoltage and high frequency applications; semiconductor device modeling and simulation. (Y. Ohno and J. P. Ao)
  • Development of semiconductor photonic devices including nitride semiconductor lasers in blue to UV region, IR photodetectors and electronic devices; Crystal growth of III-V semiconductor alloys by MOCVD (Metalorganic Chemical vapor Deposition) and by sublimation technique. (S. Sakai, Y. Naoi, K. Nishino)
  • Preparations of ITO, ZnO:Al transparent conductive oxide films, GaN, ZrO2, TiO2 by reactive sputtering processes or laser ablation; Electrical, optical and mechanical properties; Observation of energetic atoms in sputtering process. (K. Tominaga)

 

Electric Energy Engineering

Investigated in this research group are most stages of the life cycle of electric power energy, i.e. generation, transmission, distribution, conversion and utilization of electric energy including their efficient control.

 

  • Applications of wind power systems and motion control of mechanical systems based on intelligent control scheme such as fuzzy control, neural networks and genetic algorithm (T. Kamano, T. Yasuno).
  • PWM power converters; Multilevel Inverters; Motor drive systems like sensor less speed control, Vector control, Electric vehicle; Photovoltaic solar power generation systems; Applications to utility power systems like active filter and static var compensator. (T. Ohnishi, M. Hojo)
  • Generation and applications of the pulsed power ;Illumination and color appearance problems concerned with comfortable lighting spaces (N. Shimomura).
  • Power system electromagnetic compatibility; ELF electromagnetic environment and interference problems relating to the ac and dc electric power transmission systems; ELF field characterization and its coupling to the biological systems; Development of effective shielding techniques of ELF fields; Mutual coupling of dc and ac transmission lines and its effects on the electric environment (K. Isaka, M. Kawada).
  • Analysis, measurement and control on electromechanical systems; Digital signal processing (I. Morita).

 

Communications and Controls

This research group covers research fields on control engineering, communication engineering, biomedical engineering and system engineering including analysis of nonlinear systems, chaotic systems and neural systems.

 

  • Researches relate to biological and medical electronics, such as magnet devices for dental prostheses, biological effects of magnetic fields, measurement of bio-impedance and its applications to diagnoses, medical and industrial applications of neural networks and fuzzy inferences, and neural processing in the brain; Signal processing; Digital communication. (Y. Kinouchi)
  • Qualitative theory of nonlinear dynamical systems, especially bifurcations and chaos observed in nonlinear circuits (H. Kawakami).
  • Analysis of self-exciting adaptive control by hyper stability theory (A. Hattori).
  • Control theory, especially for hybrid systems of a lumped parameter part and a distributed parameter part (T. Kubo).
  • Various communications systems, especially frequency-hopped spread-spectrum communication systems; frequency-shift-keying modulation/demodulation methods; Internet administration systems (T. Iritani, T. Oie).

 

Intelligent Networks and Computer Sciences

Faculty members belonging to this research group are currently interested in electronic circuits connected with analysis and design of electronic systems and intelligent hardware and software.

 

  • Various nonlinear problems on electrical and electronic circuits, such as numerical methods and computer-aided analysis of nonlinear systems, analysis of synchronization and chaotic phenomena, design and application of cellular neural networks, and so on. (Y. Nishio)
  • Digital signal processing for acoustic system and telecommunications networks, such as echo cancellation, noise suppression, voice-activation, speech coding, and so on. Heuristic algorithms for computer aided design of integrated circuit layout using several methods such as neural networks, genetic algorithms and distributed processing systems. (S. Kitayama, T. Shimamoto)
  • General area of design and test of electronic circuits; Computer-aided design based on AI techniques; Supply current testing of logic circuits. (T. Tamesada, M. Hashizume, H. Yotsuyanagi)