Year

Research results

Writer

2003

The radial, lateral, andtangential stiffness of spoked bicycle wheels depends upon the rim's bendinginertia, torsional inertia, the spoke sizes, and the spoke geometry. Thespokes of three rear bicycle wheels of different spoke patterns wereinstrumented with strain gauges in order to investigate the effect of thespoke pattern on the spoke strain and fatigue resistance properties of thewheels. Spoke strains due to radial loads were measured in the laboratory.^[1].

H. P. Gavin

2005

The rotor, supported by hydrostatic journal and thrust gas bearings,is driven by an air turbine. This turbomachinery/bearing test device wasfabricated from single-crystal silicon wafers using micro-fabrication etchingand bonding techniques.^[2] .

J. Lian, Y. Zhou, T. Ma,and W. Wang

2013

. Processing features andturning mechanism about micro-parts are studied in order to propose turningmethod about symmetrical processing with multiple-tool. Software CATIA isused to generate three-dimensional solid model for the overall layoutstructure of high speed miniature lathe, while finite element analysissoftware is used to achieve dynamic performance analysis, so as to obtaineach factorial of machine-tool vibration and natural frequency ^[3].

W. Wang and G. Li

2002

The design, construction, and test of ahigh-speed synchronous homopolar motor/alternator, and its associated highefficiency six-step inverter drive for a flywheel energy storage system arepresented in this paper. The work is presented as an integrated design ofmotor, drive, and controller. The performance goal is for power output of 30kW at speeds from 50 kRPM to 100 kRPM ^[4].

P. Tsao, M. Senesky, and S.R. Sanders

2013

Processing features and turning mechanism about micro-parts arestudied in order to propose turning method about symmetrical processing withmultiple-tool. Software CATIA is used to generate three-dimensional solidmodel for the overall layout structure of high speed miniature lathe, whilefinite element analysis software is used to achieve dynamic performanceanalysis, so as to obtain each factorial of machine-tool vibration andnatural frequency ^[5].

H. D. Yu, L. M. Wang, X. Z.Li, J. K. Xu, and Q. Y. Shi

2011

According to structural characteristics ofthe China Railway Track System (CRTSII) slab track system, a model fordynamic analysis of vehicle-track-subgrade coupling system has beendeveloped. Based on the model, a new type of slab track element is presented,and the associated stiffness matrix, mass matrix and damping matrix for theelement are deduced. This element includes rail, rail fastening and pad,prefab slab, cement-asphalt mortar, hydraulically bonded layer, and subgrade.By means of the Lagrange equation, a numerical method for coupling the movingwheel and the rail with explicit formula is presented and the associatedfinite-element equation is formulated ^[6].

X. Lei and B. Zhang

2015

Firstly, the integrated controller module inelectric vehicle is investigated, in which the front axle is refitted for twoin-wheel motors. Secondly, genetic algorithm is used to optimize the controldecision-making rules of fuzzy controller. Thereafter, the built model isembedded in veDYNA development environment with an offline simulation test ofdriver/vehicle/road closed-loop system. At last, control strategy, which hasbeen compiled and downloaded to Mirco AutoBox controller prototype, is usedfor the real vehicle experimental analysis and validation of the proposedcontroller. Both simulation and experimental results demonstrate that thecontroller can improve the yaw motion and reduce the slip angle of vehicle ^[7].

Q. Li, X. Yu, H. Zhang, andR. Huang

2012

AFPM motor is a high-torque-density motor easily mounted compactlyonto a vehicle wheel, fltting the wheel rim perfectly. A preliminary designis a double-sided slotted AFPM motor with 6 rotor poles for hightorque-density and stable rotation. In determining the design requirements, asimple vehicle-dynamics model that evaluates vehicle performance through thetypical cruising trip of an automobile was considered. Results of the FEAsimulation were compared with those obtained from the sizing equation; atno-load condition, the ∞ux density at every part of the motor agreed. Themotor's design meets all the requirements and limits of EV, and flts theshape and size of a classical-vehicle wheel rim. The design process iscomprehensive and can be used for an arbitrary EV with an arbitrary cruisingscenario ^[8].

A. Mahmoudi, N. A. Rahim,and H. W. Ping

2015

The operation principle of the PMBECU isillustrated. Then, the basic magnetic circuit model is presented andanalyzed, followed by optimal design of the main structural parameters byinvestigating the PM leakage flux coefficient. Further, according to thebasic electromagnetic characteristics of the PMBECU, the current pulse supplyis put forward, and the minimum pulse width which enables the operation ofthe PMBECU and its dynamic characteristics are analyzed by an improved finiteelement method. Finally, a prototype machine is manufactured and tested tovalidate all the analysis results ^[9].

W. Cai, C. Gu, and X. Hu

2002

Analysis was made to combine the modeling efforts with the expectedbehavior concerned with mutual inductance and armature reaction effects, soas to have realistic simulation results verified by the experimental setup.Comprehensive experimental results corroborate the work [10].

M. G. Simoes and P. Vieira

2013

The most basic function of the brakedisc is to absorb the braking kinetic energy and transform it into heatenergy, and to discharge it into the air.The steel brake disc was used inhigh speed trains since 1980s. Forged steel with high strength and toughness(MPa = 800), but also has high thermal cracking resistance, good wearresistance and thermal fatigue resistance, long life etc. With the continuousprogress of casting technology, the casting technology is becoming more andmore important ^[11].

李继山, 刘涛, 李和平, 焦标强, 陈德峰, 顾磊磊,et al.

2012

CAN bus is acommunication protocol developed by German BOSCH company in the early 1980sto solve the data exchange between control and test instruments inautomobiles. Because the communication between the components of thepure electric vehicle platform is more. If the body wiring harness is usedsimply, it will inevitably lead to the wiring harness, which brings somedifficulties to vehicle layout and fault diagnosis. The CAN bus network cansolve these problems well ^[12].

张军

2013

The relationship between the head shape and aerodynamic performance of highspeed train, the greater the speed of the train, the greater the impact ofthe aerodynamic drag. The most obvious is the increase of aerodynamic dragand the intensification of the pressure wave during the train intersection,and the shape of the head of the train plays a decisive role in theaerodynamic performance of the train. The flow - to - solid relationshipbetween the air - train and the air train is one of the most important performanceindicators to be considered in the shape design of the high-speed train ^[13].

王添旗

2013

Electronic Differential System(EDS) is to control the speed of each wheel completely by electronic control,so that the wheel is rotated at different speeds. The hub motor hascompletely changed the traditional way of driving the car, motor installed inthe wheel hub, the motor rotor is the outer rotor, the output torque of thedirect transmission to the wheels, abandoning the traditional clutch,reducer, drive axle differential, and other components, the vehicle weight,reduce the mechanical transmission loss, and flexible driving characteristics. The EDS steering systemchanges the speed of the wheel by adjusting the speed of the motor to achievea differential steering. When the electric vehicle needs to turn, the insidecar is turned ^[14].

董铸荣, 贺萍, 梁松峰, and 邱浩

2014

The traditional vehicle driving isthe prime mover after mechanical transmission is sent to the wheels, whichgenerally includes a plurality of forward gear transmission and a reversegear, with a fixed ratio of the main reducer, and to maintain goodrelationship between the left and right wheels differentialt power control for each wheel, andgreatly improve the performance of the field environment and the ice and snowpavement. Theelectric wheel has long been in a large mine dump truck.^[15]

王秉刚