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19th Intelligent Transport systems World Congress, ITS 2012

作者： Iwata, Yasunari Otake, Hirotada Takagi, Masato Network Technology Dept. IT and ITS Planning Div. Toyota Motor Corporation 1 Toyota-cho Toyota Aichi 471-8572 Japan Advanced Vehicle Control System Development Dept. No.3 Advanced Vehicle Control System Development Div. Toyota Motor Corporation 1200 Mishuku Susono Shizuoka 410-1193 Japan Electronics Engineering Dept. 31 Electronics Engineering Div. Toyota Technical Development Corporation 2-28-23 Izumi Higashi-ku Nagoya Aichi 461-0001 Japan

This paper reports the results from an evaluation by simulation of the effects of the "Green Wave Advisory (GWA)" system in simulated actual traffic environments in Japan. Toyota Motor Corporation (TMC) has been involved with basic studies of this system as a V2I application coordinated with traffic lights. In particular, we examined the Deceleration Support system (DSS) which is designed to reduce wasteful fuel consumption by encouraging the driver to release the accelerator pedal earlier at red lights and to stop safely without hesitation at yellow lights. DSS is therefore a part of the GWA system which is useful not only for the reduction of CO2 emissions but also for promoting safe driving on roads in Japan, where the distance between intersections is often very short. Using the traffic simulation software VISSIM, we estimated the reduction in CO2 emissions and the effect on the traffic flow (travel times) for two different routes: one in the city of Tokyo and one in the suburbs. The results showed that the system could reduce CO2 emissions by more than 3% in the city and by more than 7% in the suburbs, and had almost zero effect on the travel times.

关键词： Travel time

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Engineering grain boundaries in monolayer molybdenum disulfide for efficient water-ion separation

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Science (New York, N.Y.) 2025年第6735期387卷 776-782页

作者： Shen, Jie Aljarb, Areej Cai, Yichen Liu, Xing Min, Jiacheng Wang, Yingge Wang, Qingxiao Zhang, Chenhui Chen, Cailing Hakami, Mariam Fu, Jui-Han Zhang, Hui Li, Guanxing Wang, Xiaoqian Chen, Zhuo Li, Jiaqiang Dong, Xinglong Shih, Kaimin Huang, Kuo-Wei Tung, Vincent Shi, Guosheng Pinnau, Ingo Li, Lain-Jong Han, Yu Physical Sciences and Engineering Division (PSE) King Abdullah University of Science and Technology (KAUST) Thuwal Saudi Arabia School of Materials Science and Engineering Nanyang Technological University 50 Nanyang Avenue Singapore Department of Physics King Abdulaziz University Jeddah Saudi Arabia KAUST Catalysis Center King Abdullah University of Science and Technology (KAUST) Thuwal Saudi Arabia Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM) Nanjing Tech University (NanjingTech) Nanjing China Shanghai Applied Radiation Institute Shanghai Key Laboratory of Atomic Control and Application of Inorganic 2D Supermaterials Shanghai University Shanghai China Department of Mechanical Engineering University of Hong Kong Pok Fu Lam Road Hong Kong China Department of Civil Engineering University of Hong Kong Pok Fu Lam Road Hong Kong China Imaging and Characterization Core Lab King Abdullah University of Science and Technology (KAUST) Thuwal Saudi Arabia Department of Chemical System Engineering School of Engineering University of Tokyo Tokyo Japan Center for Electron Microscopy South China University of Technology Guangzhou China School of Emergent Soft Matter South China University of Technology Guangzhou China Catalyst Center of Excellence (CCoE) Research and Development Center Saudi Aramco Dhahran Saudi Arabia Center for Sustainability and Energy Technologies Chang Gung University Taoyuan Taiwan Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources Qinghai Institute of Salt Lakes Chinese Academy of Sciences Xining Qinghai China University of Chinese Academy of Sciences Wenzhou China

Two-dimensional (2D) materials have long been considered as ideal platforms for developing separation membranes. However, it is difficult to generate uniform subnanometer pores over large areas on 2D materials. We report that the well-defined eight-membered ring (8-MR) pores, typically formed at the boundaries of two antiparallel grains of monolayer molybdenum disulfide (MoS2), can serve as molecular sieves for efficient water-ion separation. The density of grain boundaries and, consequently, the number of 8-MR pores can be tuned by regulating the grain size. Optimized MoS2 membranes outperformed the state-of-the-art membranes in forward osmosis tests by demonstrating both ultrahigh water/sodium chloride selectivity and exceptional water permeance. Creating precise pore structures on atomically thin films through grain boundary engineering presents a promising route for producing membranes suitable for various applications.

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Evaluation of effect of right-turn collision recognition support system using vehicle-to-infrastructure communication 20

Evaluation of effect of right-turn collision recognition sup...

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20th Intelligent Transport systems World Congress, ITS 2013

作者： Nakamura, Shunsuke Mukaiyama, Yoshio Suganuma, Hideaki IT and ITS Planning Div. Toyota Motor Corporation 4-18 Koraku 1-chome Bunkyo-ku Tokyo112-8701 Japan Advanced Vehicle Control System Development Div. Toyota Motor Corporation 1200 Mishuku Susono-shi Shizuoka410-1193 Japan

In Japan, approximately 19,000 accidents occur every year involving drivers turning right at an intersection with traffic signals. Consequently, the frequency of this type of accident must be reduced. A field operation test (FOT) has been carried out of a system developed to help reduce right-turn accidents. This paper discusses the FOT results data and the safety-enhancement effect of this system on driver behavior.

关键词： Traffic signals

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Predictive control of vehicle Dynamics Equipped with Intelligent Tire Sensors via Gaussian Process Regression of Lateral Tire Force

Predictive Control of Vehicle Dynamics Equipped with Intelli...

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International Conference on control and Automation (ICCA)

作者： Kunhee Ryu Jinsung Kim Minkyu Han Juhoon Back Vehicle Control Technology Development Team Division of Advanced Vehicle Platform Hyundai Motor Company Republic of Korea School of Robotics Kwangwoon University Seoul Republic of Korea

ISBN: (数字)9798350354409

ISBN: (纸本)9798350354416

This paper investigates the estimation of lateral tire forces and predictive control for vehicles equipped with intelligent tires. Motivated by the capability of intelligent tires to estimate lateral tire forces, we propose a control scheme that includes a predictor for lateral tire forces, utilizing the Gaussian Process Regression technique. In addition, a metric for online data management is proposed, which has the characteristic of retaining more data in regions where the change of the function value is relatively large. The proposed metric can be interpreted as an extension of the existing method, allowing for the control of dataset quality within its limited size. We apply the proposed control scheme to the model predictive contouring control problem. Numerical simulations demonstrate the robustness of the proposed control scheme to tire parameter uncertainty, in comparison to a baseline controller.

关键词： Measurement Uncertain systems Gaussian processes Predictive models Numerical simulation Tires Robustness

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Flight control system of hypersonic flight experiment vehicle 21st

Flight control system of hypersonic flight experiment vehicl...

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21st Atmospheric Flight Mechanics Conference, 1996

作者： Ishimoto, Shinji Takizawa, Minoru Suzuki, Hirokazu Morito, Toshiki Flight Research Division National Aerospace Laboratory Chofu Tokyo Japan Control Systems Division National Aerospace Laboratory Chofu Tokyo Japan Advanced Aircraft Research Group National Aerospace Laboratory Chofu Tokyo Japan Winged Space Vehicle Office National Space Development Agency of Japan Chofu Tokyo Japan

This paper describes the flight control system of the Hypersonic Flight Experiment (HYFLEX) vehicle. The experiment was conducted in early 1996. This paper summarizes the vehicle, sensor, on-board computer, control effectors, navigation, guidance, and control laws. In addition, the actual flight is compared with a simulated flight. The obtained flight data show that the flight control system provided enough stability and control performance to achieve the guidance commands. Some differences are observed between the actual and simulated flight, but they are not serious anomalies. © 1996, American Institute of Aeronautics and Astronautics, Inc.

关键词： Flight control systems

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Weighted two-dimensional longitudinal impedance for driving support system

Weighted two-dimensional longitudinal impedance for driving ...

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IEEE International Conference on systems, Man and Cybernetics

作者： J.C.F. de Winter M. Mulder M.M. van Paassen T. Yamamura Aerospace Engineering Delft University of Technnology Delft Netherlands Chassis Control System Development Group Advanced Vehicle Engineering Department Nissan Motor Company Limited Yokosuka Japan

Visual cues that are relevant to safe car driving are generally not supported by redundant non-visual cues, resulting in increased accident risk when visual attention is misallocated. Haptic gas pedal feedback, also referred to as longitudinal impedance, may assist drivers in proper and timely reallocation of their visual attention. A solution is presented for translating the relevant two-dimensional situation in front of the driver into a total hazard level from which gas pedal feedback force is calculated. Car driving simulations, that include a radar-like sensor model and a human driver model, were performed for several highway maneuvers. The simulations indicated that the calculated gas pedal feedback force is a weighted mix of hazard-defining variables depending on the positions of the lead vehicles in front of the own vehicle

关键词： Impedance Force feedback Hazards vehicle driving Haptic interfaces Road accidents Force sensors Automotive engineering Force measurement Aerospace engineering

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Physical limits and information bounds of micro control. I. Quantum filters and non-demolition measurements 8

Physical limits and information bounds of micro control. I. ...

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8th International Symposium on Micromechatronics and Human Science, MHS 1997

作者： Ulyanov, S.V. Arai, F. Yamafuji, K. Fukuda, T. Rizzotto, G.G. Kurawaki, I. Department of Mechanical and Control Engineering University of Electro-Communications 1-5-1 Chofu Tokyo182 Japan Department of Micro Systems Nagoya University Furo-cho Chikusa-ku Nagoya Japan Corporate Advanced System Architectures Groups SGS-THOMSON Microelectronics Via C. Olivetti 2 Agrate Brianza20041 Italy Human Technology Division Research and Development Department Yamaha Motor Co. Ltd 2500 Shingai Iwata Shizuoka438 Japan

ISBN: (纸本)0780341716

The possible accuracy limit of micro control of dynamic systems in which the dominating disturbances are thermal and quantum noises is considered. The optimal control with a Kalman-Bucy filter (KBF) and physical limits of micro control of a macro object are studied. For the individual control of a micro object a quantum prototype of KBF with non-demolition observation on the basis of quantum filtering equation is introduced. © 1997 IEEE.

关键词： Demolition

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Numerical investigation of PEM fuel cell performance in an aircraft oxygen–gas oxidizer system 54

Numerical investigation of PEM fuel cell performance in an a...

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54th AIAA Aerospace Sciences Meeting, 2016

作者： Okai, Keiichi Himeno, Takehiro Watanabe, Toshinori Yachi, Yuusaku Shinozaki, Noboru The University of Tokyo Advanced Aeropropulsion Laboratory Department of Aeronautics and Astronautics 7-3-1 Hongo BunkyoTokyo113-8656 Japan The University of Tokyo Department of Aeronautics and Astronautics 7-3-1 Hongo BunkyoTokyo113-8656 Japan IHI Corporation Electronic Control Engineering Group Control System Engineering Department Research and Engineering Division Aero-Engine and Space Operation 229 Tonogawa Mizuho-machi Nishitama-gun Tokyo180-1297 Japan IHI Aerospace Co. Ltd Technologies Development Depertment 900 Fujiki TomiokaGunma370-2398 Japan

ISBN: (数字)9781624103933

ISBN: (纸本)9781624103933

In 2012, the first EcoDemonstrator flew to conduct various experiments. One of the experiments was a Regenerative Fuel Cell (RFC) system to compensate a demand-requirement gap separating the power in an aircraft system. The RFC comprises a Proton Exchange Membrane (PEM) Fuel Cell and Electrolyzer and other auxiliary components. Commercialization of this system requires restrictions of volume and mass for flight application. An important issue for PEM fuel cells is water management near the membrane. Compact PEM fuel cells require gravity-assisted water transport. This paper describes simplified cell channel paths to conduct numerical calculations to ascertain the effects of combined gas channels with an anode and cathode. The chosen parameters are a geometrical pattern and a flow rate (inflow velocity). Ion transport with water and a membrane water balance between the anode and cathode sides are simply incorporated. Although the calculations themselves do not include the gravity effect, the result suggests that a proper combination of the gas channels enhances proper water balance in the membrane. © 2016, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.

关键词： Anodes

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Fast decision making using ontology-based knowledge base

Fast decision making using ontology-based knowledge base

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IEEE Symposium on Intelligent vehicle

作者： Lihua Zhao Ryutaro Ichise Yutaka Sasaki Zheng Liu Tatsuya Yoshikawa Artificial Intelligence Research Center National Institute of Advanced Industrial Science and Technology (AIST Tokyo Waterfront) Tokyo Japan Principles of Informatics Research Division National Institute of Informatics Tokyo Japan Research Center for Smart Vehicles Toyota Technological Institute Nagoya Aichi Japan Faculty of Applied Science University of British Columbia Canada Chassis & Vehicle Safety System Development Dept. AISIN SEIKI Co. Ltd. Kariya Aichi JAPAN

ISBN: (纸本)9781509018222

Making fast driving decisions at intersections is a challenging problem for improving safety of autonomous vehicles. Furthermore, representing sensor data in a machine understandable format is essential to enable vehicles to understand traffic situations. Ontologies are used to represent knowledge of sensor data for autonomous vehicles to aware traffic situations. In this paper, we introduce a fast decision making system, which utilizes only related part of the ontology-based knowledge base to make decisions at intersections. The decision making system performs real-time reasoning using traffic regulations and a part of the map information from the knowledge base.

关键词： Knowledge based systems Ontologies Roads Decision making Resource description framework Automobiles

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EXTENSION AND APPLICATION OF SHIP DESIGN OPTIMIZATION CODE (SHIPDOC)

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NAVAL ENGINEERS JOURNAL 1984年第3期96卷 177-190页

作者： RICHARDSON, WM WHITE, WN William M:. Richardsonhas been employed as a naval architect in the Surface Effect Ship Division of the David Taylor Naval Ship Research and Development Center (DTNSRDC) where he has worked since 1975 in the areas of SES structural loads estimation and optimal ship design. Upon first coming to DTNSRDC he worked in the Ship Dynamics Simulation Branch on ACV submarine and hydrofoil simulations. While at Mare Island Naval Shipyard (MINS) he was a member of the Engineering Computer Applications Branch where he was responsible for the development of algorithms and programs for the solution of naval architectural problems including ship design flooding effects and submarine overhaul scheduling. Before coming to MINS he was employed as a naval architect in the Hull Scientific Branch of the Boston Naval Shipyard's Design Division. He obtained an B.S. degree in Naval Architecture and Marine Engineering from M.I.T. and is a member of SNAME. William N:. Whiteis a senior naval architect in the Advance Vehicles Branch of the Naval Sea Systems Command where he is responsible for the design of all surface effect ships and air cushion vehicles. Previous to his current assignment he was with PMS-304 the Navy's Surface Effect Ship Project Office. There he was the manager for machinery and system integration for the 3000 ton SES acquisition program. His earliest advanced ship experience was acquired while employed by the David Taylor Naval Ship Research and Development Center starting in 1970. Here he worked on the Navy's hydrofoil and air cushion vehicle programs. Mr. White started his career as a student trainee at the Boston Naval Shipyard in 1961 and transferred to Mare Island Naval Shipyard in 1964 where he worked on the Navy's Polaris program. He graduated from the University of Michigan with a Master's Degree in Naval Architecture and is a member of the SNAME and ASNE.

An existing nonlinear ship design optimization program designated SHIPDOC has been extended and a new surface effect ship (SES) description input file is being developed under the sponsorship of the Naval Sea systems Command's surface ship concept formulation (CONFORM) program. SHIPDOC is currently being used in support of several feasibility and preliminary level SES designs. The program has several novel features including an open-ended, user-created ship description and the potential to model all types of ships both enhanced and conventional, surfaced and submerged. This capability has been combined with a nonlinear optimization algorithm that solves for the minimum weight ship subject to user controlled constraints. This paper presents a brief overall description of SHIPDOC and its current capabilities followed by a synopsis of ship types, both surface and submerged, which have been designed with the program in order to illustrate SHIPDOC's practical design capability.

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