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52041.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
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52042.提高汽车侧向稳定性的四轮转向系统集成控制研究
[汽车制造业] [2014-03-20]
This paper presents the design of integrated control for four-wheel steering (4WS) vehicle.A vehicle nonlinear dynamics model is built based on a lateral dynamics simplified linear model.A more accurate sideslip and yaw rate controller is used for lateral dynamics model of 4WS vehicle.Then a vehicle model based on the individual channel and partial decoupling design paradigm is identified from the vehicle dynamics. The results of a stability analysis and simulations are presented to show that the 4WS integrated control system can markedly enhance good vehicle lateral maneuverability.
关键词：汽车；四轮转向系统；侧向稳定性；集成控制系统；部分解耦
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52043.自动控制汽车制动淋水降温系统研究
[汽车制造业] [2014-03-20]
With the analysis of vehicle braking drum overheated which has caused brake invalid,this paper put forward a kind of research way to improve the problem of braking drum overheated.Through auto-control it spurts water to lower the temperature to the overheated hub to solve the problem of brake invalid which is caused by braking hub overheated,improve the constancy of braking efficiency,guarantee the security of vehicle drive.
关键词：汽车；鼓式制动器；制动效率；淋水降温；自动控制
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52044.专用汽车发电机系统的功率匹配研究
[汽车制造业] [2014-03-20]
Aimed at the problem of power supply protection on vehicles as the special project platform,making use of the surplus reserve power of vehicles and installing moving shaft generator system is introduced.Dynamics model of vehicle with shaft generator system is established,the impact of shaft generator system to the vehicle is analyzed,and compared with the dynamics of prototype vehicle,the dynamics matching method of vehicle with moving shaft generator system is obtained.
关键词：汽车；轴带发电机系统；备用电源；动力因素
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52045.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
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52046.汽车铝合金车身面板的反弹补偿研究
[汽车制造业] [2014-03-20]
We put forward a new springback compensation method based on displacement compensation principle and the principle of curved surface fairing design methods.Though full cycle simulation and calculate springback value for each working procedure,then generate the springback compensation surface.The method's practical application effect is good.
关键词：汽车；金属板材成型；反弹补偿；铝合金；车身面板
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52047.适合老年人驾驶的汽车时代是否到来
[汽车制造业] [2014-03-19]
The report concludes that there is a clear global opportunity to improve the safety, mobility, and quality of life of older adults by designing vehicles and vehicle technologies that help overcome common age-related deficits. The marketing of these vehicles to older consumers, however, will be challenging and will likely require further market research. The development of vehicle design features, new automotive technologies, and crashworthiness systems in the future should be guided by both knowledge of the effects of frailty/fragility of the elderly on crash outcomes, as well as knowledge of common driving-related declines in psychomotor, visual, and cognitive abilities. Design strategies that allow for some degree of customization may be particularly beneficial.
关键词：汽车；汽车安全；防撞性；移动性；老年人
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52048.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
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52049.使用随机参数二元有序概率单位模型对居民汽车与摩托车拥有量的分析
[汽车制造业] [2014-03-19]
This paper investigates the factors that affect household automobile and motorcycle ownership in large metropolitan areas. Extensive geocoded trip data from Athens, Greece, were modeled with the random parameters bivariate ordered probit model. The study's results indicate that vehicle (automobile and motorcycle) ownership is determined by a number of factors, such as traveler characteristics, the population density at the origin and destination, the distance and time to the destination for several trip purposes, and access to public transit.
关键词：汽车；摩托车；二元有序概率单位模型；随机参数；
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52050.全球汽车汽油直喷系统市场报告（2014-2018年）
[汽车制造业] [2014-03-19]
This report covers the present scenario and the growth prospects of the Global Automotive Gasoline Direct Injection Systems market for the period 2014-2018. It presents the vendor landscape and a corresponding detailed analysis of the top four vendors in the market. In addition, it discusses the major drivers that influence the growth of the market. It also outlines the challenges faced by vendors and the market at large, as well as the key trends that are emerging in the market.
关键词：汽车；燃料喷射系统；喷射燃料；燃烧 发动机室
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