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报告分类:外文技术报告 检索词:汽车

  • 251.基于卡尔曼滤波算法的目标车辆运动状态雷达估计方法

    [汽车制造业] [2014-03-20]

    In this paper,based on Kalman filtering algorithm,a method of target vehicle motion state radar estimation with radar(or lidar) is presented.The state equations is established based on rigid plane dynamics theory,and then with a Kalman filter to do radar data processing,the position,velocity and acceleration of the target vehicle can be estimated at the same time,so that to cover the shortage that acceleration information can not be gained with radar system.Through simulation and field tests it is verified that the detection accuracy of position and velocity of target vehicle is increasing,and the acceleration of target vehicle can be estimated effectively and accurately.
    关键词:汽车;雷达;卡尔曼过滤;加速度估计;智能汽车
  • 252.金属基复合材料高速铣削技术的改进

    [汽车制造业] [2014-03-20]

    The research content was limited to the effect of cutting parameters on the machined surface quality or cutting forces. It is suggested that high-speed milling with PCD tool should be conducted in order to improve the machined surface quality and material removal rate and decrease the machining cost. Tool life modeling, surface roughness prediction, cutting parameters optimization and high-speed milling data base and the expert system should be greatly noticed by the researchers.
    关键词:汽车;金属基复合材料;高速铣削;机械性能;优化参数
  • 253.纯电动汽车的一种嵌入式智能仪表的设计与实现

    [汽车制造业] [2014-03-20]

    an automobile intelligent instrument is designed to meet new requirements of the pure electric vehicles by combining the embedded development board with the embedded configuration software MCGS.In this instrument,the hardware development platform is developed to communicate with the main controller of vehicles by extending CAN bus interfaces on the embedded development board,the main control chip of which is S3C2440.Moreover,the embedded configuration software MCGS is adopted to achieve the software design of the instrument system.
    关键词:汽车;电动汽车;智能仪表;MCGS;控制器局域网总线
  • 254.汽车氧传感器的新型电解质制备与离子导电机制

    [汽车制造业] [2014-03-20]

    The ionic conductive behavior of the electrolyte was analyzed on the basis of electrochemical impedance spectroscopy (EIS) test,and the interaction of working temperature,defect microstructure and ionic conductivity was investigated.Accordingly,the SDC displayed an ionic conductivity of 0.029 S cm-1 at 750 ℃.It was suggested that the nano-crystalline could shorten the transfer distance of the charge carriers.Furthermore,the structural change of the polycrystal boundaries with the temperature was a key factor which promoted the oxygen ionic conductivity.
    关键词:汽车;氧传感器;离子导电;电化学阻抗谱;钐掺杂氧化铈;
  • 255.基于免疫PID控制的汽车防抱死制动系统控制算法研究

    [汽车制造业] [2014-03-19]

    A immune PID control algorithm based on classic PID is presented and used in automobile ABS system.Compared with the classic PID control algorithm and fuzzy control algorithm,the simulation result shows that the immune PID control algorithm has a shorter stabilization time,a smaller excess of system output,fewer response time and shorter braking distance,it is superior to the classic PID control algorithm and fuzzy control algorithm.The immune PID control algorithm has a higher application value.
    关键词:汽车;防抱死制动系统;PID控制;免疫控制;滑动比率
  • 256.加州大学戴维斯分校卓越中心:燃料电池,氢和混合动力汽车(最终报告)

    [电力、热力、燃气及水生产和供应业] [2014-03-19]

    This is the final report of the UC Davis Fuel Cell, Hydrogen, and Hybrid Vehicle (FCH2V) GATE Center of Excellence which spanned from 2005-2012. The U.S. Department of Energy (DOE) established the Graduate Automotive Technology Education (GATE) Program, to provide a new generation of engineers and scientists with knowledge and skills to create advanced automotive technologies. The UC Davis Fuel Cell, Hydrogen, and Hybrid Vehicle (FCH2V) GATE Center of Excellence established in 2005 is focused on research, education, industrial collaboration and outreach within automotive technology. UC Davis has had two independent GATE centers with separate well-defined objectives and research programs from 1998. The Fuel Cell Center, administered by ITS-Davis, has focused on fuel cell technology. The Hybrid-Electric Vehicle Design Center (HEV Center), administered by the Department of Mechanical and Aeronautical Engineering, has focused on the development of plug-in hybrid technology using internal combustion engines. The merger of these two centers in 2005 has broadened the scope of research and lead to higher visibility of the activity.
    关键词:环境与资源;燃料电池;技术评估;插入式混合动力汽车
  • 257.基于二次型有界性理论的自适应巡航控制系统设计

    [汽车制造业] [2014-03-19]

    A new decision algorithm for ACC systems is proposed.Feasible driving set is defined based on state and control constraints,which represent driver behavior features.And based on the analysis of collected driving data,a second-order range policy is selected to approach real driver behavior.Under dynamic output feedback control framework,the decision algorithm has been developed based on quadratic boundedness theory and given in terms of linear matrix inequalities.Performance of the proposed algorithm is verified by Simulink and Carsim co-simulation.
    关键词:汽车;自适应巡航控制;二次型有界性理论;线性矩阵不等式
  • 258.以煤制油为燃料的柴油车道路颗粒排放物

    [汽车制造业] [2014-03-19]

    Particle emissions of a diesel car fueled with coal to liquids (CTL) on road were tested.The particle number and size distribution were mainly studied.Three typical roads were adopted in this test, including urban arterial roads, secondary roads and freeways.The results show that transient particle number of the car has a corresponding relationship with the vehicle speed.With the speed increasing, the number of both nucleation mode particles and accumulation mode particles increase continuously.
    关键词:汽车;柴油机;煤制油;颗粒物排放
  • 259.汽车在火灾中生存性能改进研究

    [汽车制造业] [2014-03-19]

    The authors of this review have analyzed the auto industry reports, the scientific literature, and statistical data, and conclude that measures should be taken to improve survivability in automobile fires. The authors suggest that FMVSS 302 is no longer relevant to automobile fire safety and recommend improved standards based on objective criteria for fire safety performance (fireworthiness) at the system/vehicle level as is routinely done for crashworthiness.
    关键词:汽车;汽车火灾;防火性能;FMVSS 302
  • 260.氢燃料电池汽车燃油系统完整性研究:电气绝缘测试程序的开发和验证

    [电力、热力、燃气及水生产和供应业] [2014-03-19]

    The purpose of the project report is to document the manner in which Battelle applied its subject matter expertise, experience, and facilities to complete Task Order 4, Electrical Isolation Test Procedure Development and Verification under the NHTSA Hydrogen Vehicle Fuel System Safety Program. The report describes the discrete steps and results that led to the development and verification of the test procedure and all supporting research.
    关键词:环境与资源;燃料电池;电动车;产品开发
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