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2015 IEEE Intelligent Vehicles Symposium (IV)最新文献

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The influence of traffic on heavy-duty vehicle platoon formation 交通对重型车辆排队形的影响
Pub Date : 2015-08-27 DOI: 10.1109/IVS.2015.7225678
Kuo-Yun Liang, Q. Deng, J. Mårtensson, Xiaoliang Ma, K. Johansson
Heavy-duty vehicle (HDV) platooning is a mean to significantly reduce the fuel consumption for the trailing vehicle. By driving close to the vehicle in front, the air drag is reduced tremendously. Due to each HDV being assigned with different transport missions, platoons will need to be frequently formed, merged, and split. Driving on the road requires interaction with surrounding traffic and road users, which will influence how well a platoon can be formed. In this paper, we study how traffic may affect a merging maneuver of two HDVs trying to form a platoon. We simulate this for different traffic densities and for different HDV speeds. Even on moderate traffic density, a platoon merge could be delayed with 20 % compared to the ideal case with no traffic.
重型车辆(HDV)队列是一种显著降低尾随车辆燃油消耗的方法。通过靠近前面的车辆行驶,空气阻力大大减少。由于每辆HDV被分配了不同的运输任务,排将需要频繁地组建、合并和分裂。在道路上驾驶需要与周围的交通和道路使用者进行互动,这将影响组队的效果。在本文中,我们研究如何交通可能会影响合并机动的两个hdv试图形成一个排。我们针对不同的交通密度和不同的HDV速度进行了模拟。即使在交通密度适中的情况下,与没有交通的理想情况相比,队列合并也可能延迟20%。
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引用次数: 34
Map free lane following based on low-cost laser scanner for near future autonomous service vehicle 基于低成本激光扫描仪的免地图车道跟踪技术在未来自动驾驶服务车辆中的应用
Pub Date : 2015-08-27 DOI: 10.1109/IVS.2015.7225767
Zhiwei Song, Weiwei Huang, Ning Wu, Xiaojun Wu, Chern Yuen Anthony Wong, V. B. Saputra, Benjamin Chia Hon Quan, Chen Jian Simon, Qun Zhang, Susu Yao, Boon Siew Han
This paper proposes a map free lane following solution based on low-cost 2D laser scanners for Autonomous Service Vehicle to fill the gap between future driverless car and the lane keeping assistant. The applications of autonomous service vehicle include feeder bus in a local residential area, shuttle bus in a park or playground, sprinkler car, sweeper car, and transporter in airport or container terminal. As autonomous service vehicle is running only in a limited area and its speed is slow compared to normal vehicles, we can further simplify the problem regardless of the issues of road infrastructure detection/communication and V2I maps which prevent the popularization of driverless car, and to propose a unique map free solution. The features of our approach include: 1) an innovative configuration for two 2D laser scanners to detect the lane with sharp curve; 2) a fast and accurate lane detection algorithm based on 2D laser's raw date directly; 3) a reliable and smooth path planning based on local lane fitting and prediction; and 4) a self-built unique drive-by-wire system for electronic car. We successfully tested our vehicle with autonomous driving in the testing field. The experiments show that the vehicle's trajectory matched the planned path accurately.
为了填补未来无人驾驶汽车与车道保持助手之间的空白,提出了一种基于低成本二维激光扫描仪的自动驾驶服务车辆无地图车道跟踪解决方案。自动驾驶服务车辆的应用范围包括:居民区的接驳巴士、公园或游乐场的穿梭巴士、洒水车、清扫车、机场或集装箱码头的运输车等。由于自动驾驶服务车辆在有限的区域内行驶,速度相对于普通车辆较慢,我们可以进一步简化问题,不考虑阻碍无人驾驶汽车普及的道路基础设施检测/通信和V2I地图问题,提出独特的无地图解决方案。我们的方法的特点包括:1)一个创新的配置,两个二维激光扫描仪检测车道急转弯;2)直接基于二维激光原始数据的快速准确车道检测算法;3)基于局部车道拟合和预测的可靠平滑路径规划;4)自建独特的电动汽车线控系统。我们成功地在测试场测试了自动驾驶汽车。实验结果表明,车辆轨迹与规划路径匹配较好。
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引用次数: 12
Trajectories planning for multiple UAVs by the cooperative and competitive PSO algorithm 基于合作与竞争粒子群算法的多无人机轨迹规划
Pub Date : 2015-08-27 DOI: 10.1109/IVS.2015.7225671
Jun Liu, T. Shi, Ping Li, X. Ren, Hongbin Ma
By the cooperative and competitive PSO algorithm, the goal of this study is to provide the cooperative trajectories of multiple UAVs in the three dimensional space. To effectively reduce the dimension of this problem, the optimization process is mainly divided into two substages to reduce the difficulty of selecting the weights of objectives and constraints in the considered objective function. Considering several objectives and constraints, the cooperative trajectories in the first substage are given by the cooperative and competitive PSO algorithm in the two dimensional space. In the second substage, the altitude of cooperative trajectories is adjusted according to the considered objectives and constraints. In the complicated scenarios, simulation results demonstrate the effectiveness and the robustness of the cooperative and competitive PSO algorithm, which possibly provides one guideline for optimal cooperative planning trajectories of multiple UAVs in the three-dimensional space.
通过合作与竞争粒子群算法,给出了多无人机在三维空间中的合作轨迹。为了有效地降低该问题的维数,优化过程主要分为两个子阶段,以降低所考虑的目标函数中目标和约束的权重选择的难度。在考虑多个目标和约束条件的情况下,采用合作竞争粒子群算法在二维空间中给出了第一子阶段的合作轨迹。在第二阶段,根据所考虑的目标和约束调整合作轨迹的高度。在复杂场景下,仿真结果验证了该算法的有效性和鲁棒性,为三维空间中多无人机协同规划轨迹的优化提供了一种思路。
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引用次数: 8
Development of driver-state estimation algorithm based on Hybrid Bayesian Network 基于混合贝叶斯网络的驾驶员状态估计算法研究
Pub Date : 2015-08-27 DOI: 10.1109/IVS.2015.7225873
Dong Woon Ryu, Hyeon Bin Jeong, Sang Hun Lee, Woon-Sung Lee, J. H. Yang
In this study, we develop and evaluate an estimation algorithm of abnormal driving states (drowsiness, distraction, and workload) based on a Hybrid Bayesian Network (HBN) using multimodal information. The HBN algorithm is expected to increase transportation safety by combining merits of both the Bayesian Network and clustering algorithm. In addition, multimodal data efficacy analysis through human-in-the-loop experiments is used to enhance the performance of the driver-state estimation algorithm. Performance results obtained the lowest false alarm rate and fastest calculation speed. The false alarm rate decreased from 18.2 to 15.5%, whereas the calculation speed decreased by 4.35%.
在这项研究中,我们开发并评估了一种基于混合贝叶斯网络(HBN)的基于多模态信息的异常驾驶状态(嗜睡、分心和工作负载)的估计算法。HBN算法结合贝叶斯网络和聚类算法的优点,有望提高运输安全性。此外,通过人在环实验进行多模态数据有效性分析,提高了驾驶员状态估计算法的性能。性能结果获得了最低的虚警率和最快的计算速度。虚警率由18.2%下降到15.5%,计算速度下降4.35%。
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引用次数: 6
Adaptive dynamic preview control for autonomous vehicle trajectory following with DDP based path planner 基于DDP路径规划器的自动驾驶车辆轨迹跟踪自适应动态预览控制
Pub Date : 2015-08-27 DOI: 10.1109/IVS.2015.7225817
Ning Wu, Weiwei Huang, Zhiwei Song, Xiaojun Wu, Qun Zhang, Susu Yao
For autonomous navigation system of intelligent vehicle, robust and stable control with accurate tracking ability is one of the key requirements. In this paper, we present a systematic controller design approach for autonomous vehicle navigation system. The proposed controller integrates dynamic vehicle model and online updated path model by quadratic programming (QP) cost function, which considers both tracking error and stability. A novel path planner based on the differential dynamic programming (DDP) with consideration of the kinematic feasibility is used. The path tracking accuracy has been improved by utilizing the proposed dynamic preview controller. Promising experimental results showed that the overall navigation system is robust and stable.
对于智能汽车自主导航系统来说,鲁棒稳定的控制和精确的跟踪能力是关键要求之一。本文提出了一种自动驾驶汽车导航系统的系统控制器设计方法。该控制器采用二次规划(QP)代价函数将动态车辆模型与在线更新路径模型相结合,同时考虑了跟踪误差和稳定性。提出了一种考虑运动可行性的基于微分动态规划的路径规划方法。利用所提出的动态预览控制器,提高了路径跟踪精度。实验结果表明,整个导航系统具有良好的鲁棒性和稳定性。
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引用次数: 14
A method for driving control authority transition for cooperative autonomous vehicle 一种协作式自动驾驶车辆驾驶控制权限转移方法
Pub Date : 2015-08-27 DOI: 10.1109/IVS.2015.7225717
Yongbon Koo, Jinwoo Kim, Wooyong Han
Many researchers have reported that a decline in driving concentration caused by drowsiness or inattentiveness is one of the primary sources of serious car accidents. One of the most well-known methods to measure a driver's concentration is called driver state monitoring, where the driver is warned when he or she is falling asleep based on visual information of the face. On the other hand, autonomous driving systems have garnered attention in recent years as an alternative plan to reduce human-caused accidents. This system shows the possibility of realizing a vehicle with no steering wheel or pedals. However, lack of technical maturity, human acceptance problems, and individual desire to drive highlight the demand to keep human drivers in the loop. For these reasons, it is necessary to decide who will be responsible for driving the vehicle and adjusting the vehicle control system. This is known as the driving control authority. In this paper, we present a system that can suggest transitions in various driving control authority modes by sensing a decline of the human driver's performance caused by drowsiness or inattentiveness. In more detail, we identify the problems of the legacy driving control authority transition made only with vision-based driver state recognition. To address the shortcomings of this method, we propose a new recommendation method that combines the vision-based driver state recognition results and path suggestion of an autonomous system. Experiment results of simulated drowsy and inattentive drivers on an actual autonomous vehicle prototype show that our method has better transition accuracy with fewer false-positive errors compared with the legacy transition method that only uses vision-based driver state recognition.
许多研究人员报告说,由于困倦或注意力不集中而导致的驾驶注意力下降是严重车祸的主要原因之一。测量司机注意力的最著名的方法之一是“司机状态监控”,即当司机睡着时,根据面部的视觉信息向司机发出警告。另一方面,作为减少人为事故的替代方案,自动驾驶系统近年来引起了人们的关注。该系统展示了实现无方向盘、无踏板汽车的可能性。然而,技术成熟度的缺乏、人类的接受问题以及个人的驾驶欲望都凸显了将人类驾驶员留在循环中的需求。由于这些原因,有必要决定谁来负责驾驶车辆和调整车辆控制系统。这就是所谓的驾驶控制权威。在本文中,我们提出了一个系统,该系统可以通过感知人类驾驶员因困倦或注意力不集中而导致的性能下降来建议各种驾驶控制权限模式的转换。更详细地说,我们确定了遗留驾驶控制权限转换的问题,仅通过基于视觉的驾驶员状态识别。针对该方法的不足,提出了一种将基于视觉的驾驶员状态识别结果与自动驾驶系统的路径建议相结合的推荐方法。在一辆实际的自动驾驶汽车原型上模拟驾驶员困倦和注意力不集中的实验结果表明,与仅使用基于视觉的驾驶员状态识别的传统过渡方法相比,我们的方法具有更高的过渡精度和更少的假阳性误差。
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引用次数: 9
Improving yaw stability control in severe instabilities by means of a validated model of driver steering 通过验证的驾驶员转向模型改进严重不稳定情况下的偏航稳定性控制
Pub Date : 2015-08-27 DOI: 10.1109/IVS.2015.7225656
G. Markkula, Johan Eklov, L. Laine, Erik Wikenhed, Niklas Frojd
An experiment was carried out on a low friction test track, where seven truck drivers repeatedly performed collision avoidance and stabilization with a 4×2 tractor. A previous finding from a simulator study was confirmed: In severe yaw instability, drivers engaged in a yaw rate nulling type of steering behavior, in conflict with the assumptions of conventional electronic stability control (ESC), and the experiment provided indications of conventional ESC behaving suboptimally in these situations. Promising results were obtained for modified versions of the ESC, based on the yaw rate nulling model of steering, but further development work is needed.
在一个低摩擦测试轨道上进行了一项实验,七名卡车司机在4×2拖拉机上反复进行避碰和稳定。之前一项模拟器研究的发现得到了证实:在严重偏航不稳定的情况下,驾驶员会采取偏航率为零的转向行为,这与传统电子稳定控制(ESC)的假设相冲突,并且实验提供了传统ESC在这种情况下表现不佳的迹象。基于转向偏航率零化模型的改进型ESC获得了令人满意的结果,但需要进一步的开发工作。
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引用次数: 2
Intelligent navigation system-based optimization of the energy consumption 基于智能导航系统的能耗优化
Pub Date : 2015-08-27 DOI: 10.1109/IVS.2015.7225780
A. Cabani, R. Khemmar, J. Ertaud, J. Mouzna
The aim of this work is to design and build by 2015 an electric four-seater equipped with an autonomous extension device. The project was born from two observations: in a context of necessary diversification of energy sources and the development of electric vehicles, the main problem remains the battery life and availability of charging stations. The issue of our work lies both in the optimization of energy consumption and improving the electric vehicle. Our team was tasked to develop and implement an Energy Management System of Electric Vehicle. The objective of the mission is to create a program that calculates the set speed to minimize the cost of energy consumption and maximize battery life. This calculation is done by taking into account prevention parameters are: vehicle speed, real-time parameters from Maps (elevations in the path, wind speed, etc.), the forces applied to the vehicle.
这项工作的目标是在2015年之前设计并制造一辆配备自动延伸装置的电动四座汽车。该项目源于两个观察:在能源多样化和电动汽车发展的背景下,主要问题仍然是电池寿命和充电站的可用性。我们工作的问题既在于优化能耗,也在于改进电动汽车。我们小组的任务是开发和实施电动汽车能源管理系统。任务的目标是创建一个程序,计算设定的速度,以尽量减少能源消耗的成本和最大限度地延长电池寿命。这个计算是通过考虑预防参数来完成的:车辆速度,地图上的实时参数(路径海拔,风速等),施加在车辆上的力。
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引用次数: 6
Fusion of laser and radar sensor data with a sequential Monte Carlo Bayesian occupancy filter 融合激光和雷达传感器数据与顺序蒙特卡罗贝叶斯占用滤波器
Pub Date : 2015-08-27 DOI: 10.1109/IVS.2015.7225827
Dominik Nuss, Ting Yuan, Gunther Krehl, M. Stuebler, Stephan Reuter, K. Dietmayer
Occupancy grid mapping is a well-known environment perception approach. A grid map divides the environment into cells and estimates the occupancy probability of each cell based on sensor measurements. An important extension is the Bayesian occupancy filter (BOF), which additionally estimates the dynamic state of grid cells and allows modeling changing environments. In recent years, the BOF attracted more and more attention, especially sequential Monte Carlo implementations (SMC-BOF), requiring less computational costs. An advantage compared to classical object tracking approaches is the object-free representation of arbitrarily shaped obstacles and free-space areas. Unfortunately, publications about BOF based on laser measurements report that grid cells representing big, contiguous, stationary obstacles are often mistaken as moving with the velocity of the ego vehicle (ghost movements). This paper presents a method to fuse laser and radar measurement data with the SMC-BOF. It shows that the doppler information of radar measurements significantly improves the dynamic estimation of the grid map, reduces ghost movements, and in general leads to a faster convergence of the dynamic estimation.
占用网格映射是一种众所周知的环境感知方法。网格地图将环境划分为单元,并根据传感器测量值估计每个单元的占用概率。一个重要的扩展是贝叶斯占用过滤器(BOF),它可以额外估计网格单元的动态状态,并允许对变化的环境进行建模。近年来,BOF越来越受到人们的关注,特别是顺序蒙特卡罗实现(SMC-BOF),它需要较少的计算成本。与经典的目标跟踪方法相比,一个优点是任意形状的障碍物和自由空间区域的无对象表示。不幸的是,关于基于激光测量的BOF的出版物报告说,代表大的、连续的、静止的障碍物的网格单元经常被误认为是以自我车辆的速度移动(幽灵运动)。本文提出了一种用SMC-BOF融合激光和雷达测量数据的方法。结果表明,雷达测量的多普勒信息显著改善了网格图的动态估计,减少了鬼影运动,总体上使动态估计的收敛速度更快。
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引用次数: 57
An overview of vehicular platoon control under the four-component framework 四组份框架下的车辆排控制综述
Pub Date : 2015-08-27 DOI: 10.1109/IVS.2015.7225700
S. Li, Yang Zheng, Keqiang Li, Jianqiang Wang
The platooning of autonomous ground vehicles has potential to largely benefit the road traffic, including enhancing highway safety, improving traffic utility and reducing fuel consumption. The main goal of platoon control is to ensure all the vehicles in the same group to move at consensual speed while maintaining desired spaces between adjacent vehicles. This paper presents an overview of vehicular platoon control techniques from networked control perspective, which naturally decomposes a platoon into four interrelated components, i.e., 1) node dynamics (ND), 2) information flow topology (IFT), 3) distributed controller (DC) and, 4) geometry formation (GF). Under the four-component framework, existing literature are categorized and analyzed according to their technical features. Three main performance metrics, i.e. string stability, stability margin and coherence behavior, are also discussed.
自动驾驶地面车辆的队列有可能在很大程度上有利于道路交通,包括提高公路安全,改善交通效用和降低燃料消耗。队列控制的主要目标是确保同一组中的所有车辆以共识速度移动,同时保持相邻车辆之间的期望空间。本文从网络控制的角度概述了车辆队列控制技术,将队列自然地分解为四个相互关联的组件,即1)节点动力学(ND), 2)信息流拓扑(IFT), 3)分布式控制器(DC)和4)几何形状(GF)。在四成分框架下,根据现有文献的技术特点进行分类和分析。讨论了三个主要性能指标,即弦稳定性、稳定裕度和相干行为。
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引用次数: 170
期刊
2015 IEEE Intelligent Vehicles Symposium (IV)
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