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报告分类:外文技术报告 检索词:汽车

  • 181.爱荷华病死率评估和控制评估(FACE)报告:柴油机械毁坏源于车祸者分心驾驶

    [汽车制造业] [2014-07-24]

    A 37-year-old diesel mechanic employed by a railroad transportation company died when his loaded utility truck collided with the rear of a semi-trailer on a four-lane interstate highway. The mechanic was driving at highway speed during daylight hours when he failed to stop in time and struck the semi, which was moving slowly in traffic that had backed up due to a car fire two miles downstream. There was severe damage to the mechanic's truck, with underside of the cab and intrusion up to the right rear tires of the trailer ahead. The force of the collision caused a chain reaction, pushing the struck tractor-trailer forward into a second tractor-trailer that had stopped in backed up traffic. Fire and rescue responders arrived from the nearby town located four miles away. The mechanic, who was wearing a safety belt, suffered blunt force trauma as a result of the collision and was pronounced deceased at the scene. He was extricated by mechanical means from the truck cab and was found holding a cell phone. Law enforcement officers' examination of the phone activity revealed the mechanic had exchanged several voice/text messages prior to the crash and was initiating a voice/text message application at the time of the collision. The driver's failure to notice the tractor trailer ahead and stop in time was attributed to texting. Drivers of the other two vehicles were not severely injured.
    关键词:汽车;事故调查;柴油机械师;机动车碰撞
  • 182.车辆密度尺度的建模与表征

    [汽车制造业] [2014-07-24]

    Future vehicular networks shall enable new classes of services and applications for car-to-car and car-to-roadside communication. The underlying vehicular mobility patterns significantly impact the operation and effectiveness of these services, and hence it is essential to model and characterize such patterns. In this paper, we examine the mobility of vehicles as a function of traffic density of more than 800 locations from six major metropolitan regions around the world. The traffic densities are generated from more than 25 million images and processed using background subtraction algorithm. The resulting vehicular density time series and distributions are then analyzed. It is found using the goodness-of-fit test that the vehicular density distribution follows heavy-tail distributions such as Log-gamma, Loglogistic, and Weibull in over 90of these locations. Moreover, a heavy-tail gives rise to long-range dependence and self-similarity, which we studied by estimating the Hurst exponent (H).
    关键词:汽车;通讯网络;算法;表征;高速公路通信
  • 183.将主动悬置发动机振动隔离应用到模糊控制

    [汽车制造业] [2014-07-24]

    An automobile power-train active mount system with a piezoelectric stack actuator is introduced.The influence caused by power-train to the body of the car is analyzed by means of parameter self-tuning fuzzy PID control,on which the simulating results are based.It turns out that this control scheme can restrain the influence better caused by power-train to the body of the car.
    关键词:汽车;执行器;主动安装;PID;模糊控制
  • 184.通过MEMS传感器进行驾驶员培训操作的信息采集器

    [信息传输、软件和信息技术服务业] [2014-07-24]

    In this paper,based on characteristic analysis of driver training operation,a new approach of information acquisition for driver training is found,which is through extracting acceleration information.The information acquisition device which is under MEMS three-axis acceleration transducer,based on ADXL335 and MCU,can achieve real-time and accurate measurement of vehicles' three-dimensional acceleration.By comparing the change curve of measured acceleration with the related data of good driver,the existing problems will be found out.In this way,the driver training operation can be assessed in a timely way.
    关键词:汽车;MEMS传感器;汽车驾驶员;培训操作
  • 185.计算机视觉应用到车辆中的极端测试

    [汽车制造业] [2014-07-24]

    VisLab has been pioneering the world of autonomous driving since its early years; in 1998 VisLab organized one of the most innovative experiments for that period: a passenger car was equipped with sensing and actuation devices and was tested with autonomous steering along a 2000+ km on Italian highways
    关键词:汽车;自主驾驶;传感和驱动装置;VisLab
  • 186.闭塞方法对战模拟驾驶:视觉-手动辅助任务绩效中的驱动行为

    [汽车制造业] [2014-07-24]

    On February 24, 2012, NHTSA released a proposed set of Driver Distraction Guidelines covering original equipment in-vehicle device secondary tasks (where secondary tasks are defined as communications, entertainment, information gathering, and navigation tasks not required to drive) performed by the driver through visual-manual means (meaning the driver looking at a device, manipulating a device-related control with the drivers hand, and watching for visual feedback). These Guidelines will be used to identify secondary tasks that interfere with a driver's ability to safely control a vehicle (National Highway Traffic Safety Administration (NHTSA), 2012). The NHTSA Guidelines specify multiple test methods with acceptance criteria. While including a total of seven test protocols in its Notice of Proposed Federal Guidelines (NHTSA, 2012), NHTSA indicates that it prefers the following two test protocols and their associated acceptance criteria: Option EGDS: Eye Glance Testing Using a Driving Simulator, and Option OCC: Occlusion Testing. Following an approach set forth by the Alliance of Automobile Manufacturers (Alliance) and the growing body of research indicating that eye glance behavior is a prominent indicator of driver distraction, these preferred test protocols focus on eye glance behavior as a method for determining which visual or visual-manual secondary tasks are not acceptable for performance by a driver while operating a vehicle.
    关键词:汽车;司机的行为;指引;人因工程;车载信息系统
  • 187.基于遗传算法的汽车动力系统多目标优化

    [汽车制造业,信息传输、软件和信息技术服务业] [2014-07-24]

    Simulation model of automobile power train has been built using ADVISOR,on the basis of Genetic Algorithm Tool Box,the paper takes a mini car as example to carry out performance simulation calculation and power train parametric optimization design.The result show that automobile power performance and fuel economy and emission performance have been greatly improved The power train has great influence on automobile power performance and fuel economy and emission performance.It is an important approach to optimize its matching parameters on reducing the fuel wastage,improving dynamical performance and decreasing the emission of waste gas.Genetic Algorithm is kind of global searching and optimized algorithm which integrates the principles of biological evolution with optimization technology and computer technology.ADVISOR,advanced simulation software,was developed on the basis of MATLAB/Simulink and can rapidly analyze automobile power performance,fuel economy and emission performance.It is a better approach to cope with automobile power train match optimization by integrating ADVISOR's accurate simulation with Genetic Algorithtn's searching optimization with high efficiency.
    关键词:汽车;顾问;汽车动力系统;多目标优化
  • 188.北卡罗莱纳州铁路客运服务燃料和技术的评估和测量

    [交通运输、仓储和邮政业,铁路、船舶、航空航天和其他运输设备制造业,电力、热力、燃气及水生产和供应业] [2014-07-24]

    关键词:汽车;燃料;替代燃料;柴油机燃料;柴油电力机车
  • 189.基于同步制造的决策支持仿真系统

    [信息传输、软件和信息技术服务业,汽车制造业] [2014-07-24]

    The focus of the article was the redesign of an assembly cell in a car manufacturing company. The new design had to include the operations related to the assembly of new roofs without disrupting the throughput rate. The theory-of-constrains framework has been used to propose designs as well as to define the evaluation criteria. The complexity of the system has been studied using a discrete-event simulation model. The traditional scholar steps have been followed to develop a robust decision support simulation system (DSSS).
    关键词:汽车;决策支持系统;仿真;汽车系统
  • 190.基于计算机视觉的城市交通自动控制研究

    [交通运输、仓储和邮政业,信息传输、软件和信息技术服务业] [2014-07-24]

    Urban traffic control is not only a real-time control system but also random,non-line ar,uncertainty complex system; the article discusses the use of PLC (programmable logic controlle r) control technology and fuzzy control method for traffic signal control system and how to complete the complex traffic control by using communications link technology between comp uters and application of fuzzy control theory,make vehicle and road navigation to realize intelligent.
    关键词:汽车;城市交通;自动控制;模糊控制;信号控制
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