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241.为提高路边停车安全性的警车车灯、反光标识及油漆处理性能分析
[汽车制造业] [2014-03-21]
The project is designed to modify an existing sensor-based traffic monitoring system so that it serves as a test bed to evaluate the retro-reflector, lighting, and paint treatments of an emergency vehicle to determine whether particular combinations produce improved 'move over' behavior of oncoming traffic.
关键词：汽车；逆反射；水基涂料；反射率；交通事故；回归分析；
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242.电动汽车无刷直流电机的仿真研究
[汽车制造业] [2014-03-21]
Aiming at working out how to apply the brushless DC motor to the electric car,a control systemwas designed after a series of related researches.With the basic principles and methods of operating the brushless DC motor being studied,the sirmlation model of controlling the brushless DC rrotor was designed by MATLAB software,and the related parameters were analyzed and studied.The results showed that the brushless DC motor had good controllability,which made it suitable for the application to the electric car.
关键词：汽车；电动汽车；无刷直流电机；控制
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243.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
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244.蓄电池在线维护设备设计
[汽车制造业,电气机械和器材制造业] [2014-03-20]
In this paper,the sulfation failure mechanism on negative plates of lead-acid batteries and the pulse-repairing technology are analyzed,and an online automatic maintenance device based-on the Boost converter is designed.The test results show that by adjusting the hardware devices and programs the frequency and amplitude of charge-and-discharge pulses can be changed.And when the battery voltage is too low the device can generate sound and light alarm.The device meets the design requirements.
关键词：汽车；铅酸电池；蓄电池；电池维护
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245.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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246.车辆稳定性控制车身偏角观测器设计
[汽车制造业] [2014-03-20]
A novel method based on non-linear robust observer is proposed for estimation body slip angle.Firstly,full-dimension observer designed based on yaw rate and lateral acceleration to estimate lateral velocity.And then,the body slip angle is estimated by using lateral velocity and longitudinal velocity.The proposed m ethod is verified by of fline simulation.The results demonstrate that this method has a better adaptability to different driving conditions and accuracy.
关键词：汽车；车身侧滑角；车辆稳定性控制；观测器
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247.利用甲烷生产微波氢实验研究
[汽车制造业] [2014-03-20]
The results of this testing program have been very promising, demonstrating the ability to achieve higher methane conversion than onventional methane steam reforming processes. In addition to the higher conversion efficiencies, the microwave reactor system used for the process is more easily scaled to lower gas production volumes than conventional reforming technologies. This makes the technology well suited to generate hydrogen from natural gas for hydrogen fuel cells in the 1 to 20-kW range.
关键词：汽车；氢；甲烷；汽车尾气；碳氢化合物；微波
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248.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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249.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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250.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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