搜索结果: 1-15 共查到“公路运输 vehicle”相关记录27条 . 查询时间(0.156 秒)
NEW SOURCE OF GEOSPATIAL DATA: CROWDSENSING BY ASSISTED AND AUTONOMOUS VEHICLE TECHNOLOGIES
Crowdsensing/Crowdsourcing Autonomous/Driverless Vehicles Mobile Mapping, Deep Learning
2018/11/8
The ongoing proliferation of remote sensing technologies in the consumer market has been rapidly reshaping the geospatial data acquisition world, and subsequently, the data processing as well as infor...
INFLUENCE OF DOMAIN SHIFT FACTORS ON DEEP SEGMENTATION OF THE DRIVABLE PATH OF AN AUTONOMOUS VEHICLE
LiDAR Computer Vision Self-driving cars Weakly-supervised learning Convolutional Neural Network Domain adaptation
2018/6/4
One of the biggest challenges for an autonomous vehicle (and hence the WEpod) is to see the world as humans would see it. This understanding is the base for a successful and reliable future of autonom...
GOOD SAMPLE CONSENSUS ESTIMATION OF 2D-HOMOGRAPHIES FOR VEHICLE MOVEMENT DETECTION FROM THERMAL VIDEOS
Infrared surveillance Machine vision Object recognition
2015/5/18
In this contribution we describe a method to assess the activity of vehicles based on airborne image sequences taken by an infrared
camera. Active vehicles often appear as a configuration of a dark a...
Improving electric vehicle sales may require solving unique chicken and egg problem
electric vehicle sales unique chicken egg problem
2015/3/4
In 2011, an important national priority was declared: Put 1 million electric vehicles on the road by 2015. Since then, sales of plug-in electric vehicles have risen and continue to rise, but they pale...
Measuring the impacts of local land-use policies on vehicle miles of travel: The case of the first big-box store in Davis, California
travel behavior vehicle-miles traveled retail travel
2013/11/21
Concerns over climate change have brought new impetus to the goal of reducing vehicle travel through land-use policy. To determine the degree to which land-use policies are effective in reducing vehic...
车辆传动系统虚拟样机建模与验证（Virtual Prototyping Modeling and Validation of Vehicle Transmission System）
车辆 传动系统 虚拟样机建模
2009/11/3
为实现在设计阶段对车辆传动系统性能进行预测，以目前广泛应用的液力机械传动系统的组成和工作原理为基础，提出了可闭锁式液力变矩器和换挡离合器两个关键部件级，以及整个系统级虚拟样机建模方法，并进一步分析建立了相对应的数学模型。以起步工况试验的动力输入特性和操纵方式作为模型的输入条件对其进行了验证。通过仿真与试验测试结果对比，表明所建立的模型正确、合理并具有较高的精度。
Loose part vibration in vehicle transmissions-Gear rattle
Transmission noise minimising Gear rattle Torsional vibration Backlash Axial clearance
2009/10/14
Minimising noise is becoming an increasingly important factor in motor vehicle development. The importance of this development goal is increasing with rising customer expectations and increasingly str...
The Limited Integrator Model Regulator and Its Use in Vehicle Steering Control
Vehicle dynamics control Model regulator Limited integrator implementation
2009/10/12
Unexpected yaw disturbances, such as braking on unilaterally icy roads, side wind forces and tire ruptures,are very dicult to handle by the driver of a road vehicle, due to his/her large panic reacti...
Active Control of Seat Vibrations of a Vehicle Model Using Various Suspension Alternatives
PID control Vehicle model Active suspensions
2009/10/12
The dynamic behavior of a non-linear 8 degrees of freedom vehicle model having active suspensions and a PID controlled passenger seat is examined. The non-linearity occurs due to dry friction on the d...
Plug-in混合动力汽车能量管理策略优化设计（Optimization of Plug-in Hybrid Electric Vehicle Energy Management Control Strategy）
Plug-in混合动力汽车 能量管理策略 优化
2009/9/25
应用PSAT前向仿真软件及矩阵分割全局优化算法，对并联式Plug-in混合动力汽车（PHEV）在不同电能消耗续驶里程（CDR）下的能量管理策略进行了优化设计研究。结果表明：PHEV电能消耗续驶里程越大，优化控制参数对整车经济性影响越小；小CDR优化控制参数的整车平均经济性能好于大CDR优化控制参数；利用优化设计得到的PHEV能量管理策略可以使整车平均等价油耗降至2.70 L/(100km)，相对于...
汽车ABS电子控制单元综合性能测试试验台（Development of Integrative Performance Test Bench of the Vehicle ABS ECU）
汽车 防抱死制动系统 性能检测
2009/9/25
开发了一种用于ABS电子控制单元室内性能测试的试验台，用于测试其控制功能和故障诊断功能。该试验台主要由轮速再现装置、测控系统、数据采集系统、基础制动系统及恒压油源等组成。台架试验结果表明，试验台能够测试ECU的控制功能。利用该试验台可以方便地设置轮速传感器故障，以实现ECU故障诊断功能的测试。
基于逆系统方法的汽车方向盘转角识别（Vehicle Steering Angle Identification Based on Inverse System Method）
汽车 操纵动力学 方向盘转角
2009/9/2
将逆系统理论应用于汽车操纵动力学，用于研究汽车精确达到给定侧向加速度时的驾驶员方向盘转角输入。以汽车方向盘转角输入的状态方程为基础，在逆系统满足稳定、可逆、可控、可观的情况下，分别以闭环仿真和实车试验得到的侧向加速度为逆系统输入识别方向盘转角，并和实车试验的方向盘转角进行对比。结果表明：该方法识别的方向盘转角和实车试验的方向盘转角运动趋势相似，得到的侧向加速度与给定的侧向加速度绝对误差较小。
车载捷联三自由度稳定平台设计与性能试验（Design and Performance Experiment of Vehicle-borne Strapdown 3—DOF Stabilization Platform）
汽车 车载环境识别系统 捷联稳定平台
2009/5/22
根据车载视线稳定平台的结构特点及功能要求，设计了捷联稳定平台系统。结合稳定平台控制系统上、下位机间的通信协议，运用多线程和多媒体定时器技术，采用Visual C++ 6.0编写了实时采集与发送平台各框位置信息的上位机程序。为验证平台控制系统的实时通信性能，对稳定平台进行了动态性能测试。试验结果表明，平台控制系统的实时通信性能满足使用要求。
在分析磁流变减振器工作模式基础上，结合汽车减振器的工作要求，分别完成了混合模式和流动模式磁流变减振器的结构设计，建立了两种模式下的数学模型并进行了相关的仿真研究，设计出了产品并进行了试验研究。比较分析发现，二者阻尼力在低速时差异不大，但是在高速时差异较大。从工程实现和控制角度看，混合工作模式可以减少阻尼孔的堵塞并具有较大的可控倍数，其性能要明显优于流动模式减振器。通过试验证明，建立的模型、提出的设...
电子差速履带车辆转向转矩神经网络PID控制（Neural Networks PID Control of Steering Torque for Electronic Differential Tracked Vehicle）
履带车辆 转向 电子差速
2009/5/22
根据电子差速履带车辆转向动力学和运动学分析，提出一种电子差速履带车辆转向转矩模拟神经网络PID（ANNPID）控制策略，由双电动机转向转矩协调控制、ANNPID控制和感应电动机转矩控制组成。通过建立双感应电动机独立驱动履带车辆电子差速转向控制系统，实现基于ANNPID控制的转向转矩协调分配和基于模型参考自适应控制（MRAC）的感应电动机间接磁场定向（IFOC）转矩控制。采用该策略，在不同转向半径的...