A5101639596- Railway Engineering and Dynamics
- Vehicle Dynamics and Control Systems
- Mechanical Engineering and Vibrations Research
- Soil Mechanics and Vehicle Dynamics
- Engineering Applied Research
- Autonomous Vehicle Technology and Safety
- Simulation and Modeling Applications
- Vibration Control and Rheological Fluids
- Traffic control and management
- Magnetic Bearings and Levitation Dynamics
- Civil and Geotechnical Engineering Research
- Railway Systems and Energy Efficiency
- Human-Automation Interaction and Safety
- Transportation and Mobility Innovations
- Mechanical stress and fatigue analysis
- Ergonomics and Musculoskeletal Disorders
- Vehicle emissions and performance
- Traffic Prediction and Management Techniques
- Brake Systems and Friction Analysis
- Transportation Planning and Optimization
- Gear and Bearing Dynamics Analysis
- Structural Engineering and Vibration Analysis
- Adhesion, Friction, and Surface Interactions
- Dynamics and Control of Mechanical Systems
- Control and Dynamics of Mobile Robots
The University of Tokyo
2015-2024
Advanced Institute of Industrial Technology
2002-2024
Science Council of Japan
2019-2022
Toyo Seikan (Japan)
2016
Tokyo University of Science
1999-2014
Tokyo City University
2014
National Research Institute of Police Science
2013
University of Iowa
2013
Hitachi (Japan)
2012
Universitas Muhammadiyah Metro
2011
In this paper, the modeling of electromagnetic damper (EMD) for automobile suspension is presented and validation model demonstrated by comparing numerical results with experimental obtained using shaker tests. EMD used as an active controlled to have output force calculated from velocities sprung unsprung masses. The formulation system suspensions first developed, experiments suspensions. validity developed in investigation shown frequency responses well energy balance its use.
Nowadays insight into human-machine interaction is a critical topic with the large-scale development of intelligent vehicles. Biosignal analysis can provide deeper understanding driver behaviors that may indicate rationally practical use automatic technology. Therefore, this study concentrates on biosignal to quantitatively evaluate mental stress drivers during driving trucks, vehicles set at closed gap distance apart reduce air resistance save energy consumption. By application two wearable...
SUMMARY This paper proposes new control concept of suspension, i.e. a hybrid system with active and energy regeneration. In ordinary passive suspension system, damper converts vibration into heat by its viscosity, so that the is dissipated. dissipated not used practically at all. On other hand, has great performance isolation but it consumes extra energy. presents method to solve these problems in imd systems as follows: an regenerative which useful proposed. The combines this order achieve...
In this paper, the performance of electro-mechanical suspension is discussed on energy consumption, vibration isolation, and vehicle manoeuvrability. On basis formulation suspension, consumption isolation are through contour maps with sprung unsprung mass velocity feedback gain axes. From numerical simulation experimental results, for evaluation axes proposed, these maps, abilities manoeuvrability evaluated. regeneration region exists, should be considered saving. Moreover, Gain settings...
Objectives In the brain, mechanisms of attention to left and right are known be different. It is possible that brain activity when driving also differs with different horizontal road alignments (left or curves), but little about this. We found driver on curves, in an experiment using a large-scale simulator functional near-infrared spectroscopy (fNIRS). Research Design Methods The participants were fifteen healthy adults. created course simulating expressway, comprising straight line gentle...
This paper proposes a road surface recognition system based on "laser radar" (LIDER), which is used to detect lane markings for application an automatic platooning trucks. To ensure the safety of driving, there need recognize conditions (dry, wet, etc.). integrated that not only capable recognizing but also monitors using laser radar scanning system. Our method relies multiple reflection intensities and machine learning algorithm. By intensities, rate improved. Moreover, improve rate,...
The Gamma-Ray and AntiMatter Survey (GRAMS) is a next-generation balloon/satellite mission utilizing Liquid Argon Time Projection Chamber (LArTPC) detector to measure both MeV gamma rays antinuclei produced by dark matter annihilation or decay. GRAMS can identify antihelium-3 events based on the measurements of X-rays charged pions from decay exotic atoms, Flight (TOF), energy deposition, stopping range. This paper shows sensitivity estimation using GEANT4 Monte Carlo simulation. For...
Abstract This paper presents a method of active vibration control system using regenerated energy,i.e., the hybrid suspension with and energy regeneration. In this system, all for is supplied from damper which regenerates energy. order to attain less consumed law device can regenerate are required. proposes concept skyhook control. A linear DC motor convert kinetic electric high efficiency developed as an actuator regenerative damper. From experiments numerical simulations, it proved that...
In developing automatic platooning of trucks as an energy-saving technology, the reliable driving platooned is a primary objective for public implementation and future applications. At same time, there also emergency requirement to ensure safety experiment in trucks, including conditions system failure. This paper presents detailed experimental study on avoidance braking using simulator (DS) actual-vehicle experiment. addition, modification capability platoon was applied control. Therefore,...
In this investigation, contact search algorithms for the analysis of wheel/rail problems are discussed, and on-line off-line hybrid method is developed multibody railroad vehicle dynamics simulations using elastic formulation. algorithm in that can be effectively used tread switched to when point jumped flange region. two-point scenarios encountered curve negotiations, both contacts determine configuration. By so doing, points on region given by tabular never used, but rather as an initial...
Abstract This paper proposes the use of independently rotating wheels with inverse tread conicity to get self-steering ability without any complex bogie structure. The effectiveness vehicle two single-axle bogies that wheel units is proved by 1/10 scale model experiment. full made means multibody dynamics software SIMPACKTM. Both experiment and simulation results show proposed have good performance. Running stability curving for can be realised using semi-active yaw damper. Keywords:...
Abstract The rapidly aging society of Japan requires a quality transportation system that provides new mobility services combining innovative technologies to include all residents. present study carries out pilot test the world’s first connected public transport between autonomous buses (AB) and light rail transit (LRT). In this system, telecommunication two modes enabled bus fully self-drive pull in precisely at an LRT stop. Reporting result Hiroshima, paper analyzes (a) feasibility based...
This article proposes the concept of a steering bogie which utilizes self-steering ability while realizing further running performance with slight active control on tight curve. An independently rotating wheel EEF naturally has ability, making use gravity stiffness aroused by nonlinear tread gradient, but oscillation in wheel-steering motion. The proposed power-steering railway consists wheels device and enables us to eliminate vibration ideal power assist curving. In this article,...