NEDO Project Research Articles

NEDOプロジェクト「鉄鋼材料の革新的高強度・高機能化基盤研究開発」の概要と枠組みについて

NEDOプロジェクト「鉄鋼材料の革新的高強度・高機能化基盤研究開発」の概要と枠組みについて

2A1-C19 ロボット知能ソフトウェアプラットフォーム検証用知能モジュール群/移動知能モジュール群による障害物回避自律移動の実証

We are developing module software for realizing intelligent robotic behavior under NEDO project 2007-2011. On January 2009, in order to demonstrate the current status of the developed software, several simulation and real experiments were conducted. In this paper, the demonstration focusing wheel type mobile robot autonomous navigation is introduced.

Establishment of Accelerated Degradation Method of PEFC Stacks (NEDO Project: Fundamental Research of Degradation of PEFC Stacks)

Long-term continuous operation test under the actual operation condition in the system was carried out for more than 24,000 hrs using full-size cell stack manufactured by Sanyo Electric Corp.. Degradation tendencies of CO tolerance of anode and gas diffusivity of cathode were evaluated quantitatively by measuring the voltage drop by high concentration CO poisoning and air utilization dependence on the voltage. Accelerated degradation method concerning the gas diffusivity of cathode developed by Sanyo was verified. Accelerated magnifying power of gas diffusivity was calculated as about 2,100.

Establishment of Accelerated Degradation Method of PEFC Stacks (NEDO Project: Fundamental Research of Degradation of PEFC Stacks)

not Available.

超電導デジタルエレクトロニクスの最近の進展―低消費電力型超電導ネットワークデバイスの開発の現状―

In recent years, the development of superconducting digital electronics has been making rapid progress. A variety of digital circuits based on Single-Flux Quantum (SFQ) device technology such as high-speed switching circuits for router systems and high-speed sampling oscilloscope systems have been demonstrated. These achievements have been mainly based on the NEDO project, “Development of Low-power Superconducting Network Devices”. This paper describes these recent progress and future prospects of superconducting digital electronics.

Current State of Nanofiber Produced by Electrospinning and Prospects for Mass Production

Melt electrospinning was able to achieve a thin fiber with nano-order diameter by controlling the amount of discharge. Biomaterial is one of the fields where nanofiber is actively studied. The challenge of Japan for application and mass production of nanofiber noticed at present is also explained in this paper. Hirose paper Co. Ltd. proposed the production technique for an electrospinning in bubbles which continuously arise in polymer solution by applying high voltage. In NEDO project of Japan, the productivity was improved by increasing number of nozzle and became 50 times as great as the previous one. In Shiga Prefecture, the manufacturing equipment was also developed.

Correlation Among Material Quality, Performance and Reliability of High Power and High Frequency AlGaN/GaN HFET

AbstractPerformances of AlGaN/GaN HFETs have much improved recently and very high potential of this hetero- structure for high power and high frequency electronic devices has been verified. Application of new device technologies such as field plate, recessed gate, digital pre-distortion circuit and dual field plate was essential to realize such high device performances both at 2 GHz, 5GHz and 26 GHz. However, practical requirements on the quality and structure of these material systems for production of these devices are still not clear. Extensive studies on correlation among material quality, device performance and reliability were investigated under Japanese NEDO project. Firstly, this paper reviews recent progress of the performances of high power and high frequency AlGaN/GaN HFETs. Then, several interesting results which suggest practical requirements on material quality and structure will be discussed based on our extensive characterization studies in terms of device performances and reliabilities.

2404 先進デマンドバスシステムの開発と実証(OS2-1 高速化・利便性,OS2 交通・物流システムの高速化,利便性,快適性の向上,TRANSLOG 2006)

An advanced on-demand bus system has been developed for regional public transportation using the advanced electric buses (WEB) as a part of NEDO's project. The on-demand system utilizes advanced ITS and associated technologies. It consists of three subsystems of a driver navigation system responding to demands by operations on mobile phones, a traffic running simulator for best routing and an estimation system for number of passengers. On-road proving tests were carried out using WEB in Honjo city, Saitama prefecture, and the reliability and the convenience for passengers' mobility have been clarified.

NEDO5ヵ年プロジェクト「次世代半導体デバイス用高密度化実装部材のための基盤技術開発」を振り返ってー電気的信頼性の立場から

NEDO5ヵ年プロジェクト「次世代半導体デバイス用高密度化実装部材のための基盤技術開発」を振り返ってー電気的信頼性の立場から

「精密部材プロジェクト」における超微粒超硬合金開発の必要性

A NEDO project proposed by JRCM and AIST aims at the integrated development of materials and mold processing technologies for high-precision micro-components through unified promotion of three themes: (I) Development of Novel Metals with High Formability, (II) Development of Materials and Processing Technologies for High-precision Mold, and (III) Development of High-precision Forming Technology. In this paper, the necessity of the development of finer submicro-grained WC-Co hardmetal than the present commercial ones is described.

1P2-N-118 3次元上肢リハビリ訓練支援システムの研究開発と臨床評価 : NEDOプロジェクト(1999-2004)における研究開発(医療福祉ロボティクス・メカトロニクス2,生活を支援するロボメカ技術のメガインテグレーション)

1P2-N-118 3次元上肢リハビリ訓練支援システムの研究開発と臨床評価 : NEDOプロジェクト(1999-2004)における研究開発(医療福祉ロボティクス・メカトロニクス2,生活を支援するロボメカ技術のメガインテグレーション)

Development of Mechanical System and Software of 3D Rehabilitation System for the Upper Limbs in a NEDO Project and Their Clinical Evaluations(Power Assist and Nursing 2,Session: TP1-C)

Development of Mechanical System and Software of 3D Rehabilitation System for the Upper Limbs in a NEDO Project and Their Clinical Evaluations(Power Assist and Nursing 2,Session: TP1-C)

Progress of superconducting bearing technologies for flywheel energy storage systems

We report present status of NEDO project on “Superconducting bearing technologies for flywheel energy storage systems”. We fabricated a superconducting magnetic bearing module consisting of a stator of resin impregnated YBaCuO bulks and a rotor of NdFeB permanent magnet circuits. We obtained levitation force density of 8 N/cm 2 at 81 K and rotation loss per levitation force of 3 mW/N at 77 K. We confirmed that both pre-loading and excess cooling methods are effective for suppressing gradual fall of rotor due to flux creep. We designed a 10 kW h class flywheel energy storage test system and investigated feasibility of active magnetic bearings for controlling rotation axis vibration under high speed rotation of the flywheel.

8A14 NEDO プロジェクト「身体機能リハビリ支援システム」における 3 次元上肢機能回復訓練に関する研究

本報告は, 筆者らが参与しているNEDOプロジェクト「身体機能リハビリ支援システム」における3次元上肢リハビリ支援システムの開発, およびその臨床試験結果を報告するものである。

2A1-2F-D3 NEDO プロジェクト「身体機能リハビリ支援システム」における上肢機能回復訓練に関する研究

本報告は, 筆者らが参与しているNEDOプロジェクト「身体機能リハビリ支援システム」における3次元上肢リハビリ支援システムの開発, およびその臨床試験結果を報告するものである。

407 NEDO プロジェクト「身体機能リハビリ支援システム」上肢動作訓練支援システムにおける把持部機構の設計開発

407 NEDO プロジェクト「身体機能リハビリ支援システム」上肢動作訓練支援システムにおける把持部機構の設計開発

Status of National Project for SOFC Development in Japan

Solid oxide fuel cell development at NEDO, which was initiated in FY1989, entered a third phase in PY2001. During this phase, the development of thermally self-supporting modules and elemental studies to extend technology for SOFC adaptability are to be carried out. An overview of the SOFC R&D being accomplished by NEDO and the status of projects other than the NEDO project are presented herein.

Present status of R&D on superconducting magnetic bearing technologies for flywheel energy storage system

We report on the NEDO project of superconducting magnetic bearing (SMB) technologies for flywheel energy storage system. We fabricated SMB modules which consist of a stator of roof-tile shape YBaCuO bulks and a NdFeB permanent magnet circuit. The levitation force density of the bearings was 9 N/cm 2. It was confirmed that pre-loading and excess cooling methods are both effective for suppressing the gradual fall of rotor due to flux creep. We designed a basic concept of 10 kW h class flywheel energy storage system and investigated the feasibility of active magnetic bearings for the 10 kW h system. We also examined the fabrication condition of CFRP flywheels for the system.

Modeling and analysis of the NEDO 500‐kW wind generator

AbstractThe 500‐kW wind generator was developed as one of NEDO's projects, and it has been operated at TAPPI wind park since October 1996. Since then, several tests on its performance have been made. One of the most important characteristics concerns the dynamic behavior under fluctuating wind conditions. For this purpose, we performed the modeling of the NEDO 500‐kW wind generator by a system identification technique using the measured data. Next, we clarified the basic characteristics such as transient response and frequency response of the generator based on the model. We confirmed that the simulated results of dynamic behavior almost agree with the measured results. © 2001 Scripta Technica, Electr Eng Jpn, 135(3): 37–47, 2001

Continuous Bio-scouring of Cotton Fibers with Enzymes : Report of NEDO Project

Continuous Bio-scouring of Cotton Fibers with Enzymes : Report of NEDO Project