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2020 4th CAA International Conference on Vehicular Control and Intelligence (CVCI)最新文献

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Energy Management of HEV in Platoon Operation with Constant Headway Policy 恒车头策略下混合动力汽车排操作的能量管理
Pub Date : 2020-12-18 DOI: 10.1109/CVCI51460.2020.9338605
Xinyue Wang, Jiangyan Zhang, Rubo Zhang
This paper proposes a real-time energy optimization algorithm for hybrid electric vehicles that operates in a platoon using constant headway control strategy. The driving power of a hybrid electric vehicle can be distributed between the electric motor and the combustion engine. The power distribution makes evaluable energy efficient improvement. Combining the control strategy proposed by a classic cooperative adaptive cruise control (CACC) algorithm, an optimal energy management strategy is evaluated for the host vehicle in a platoon. Through the establishment of simulation experiments, the string stability and real-time energy optimization performance of the control system are verified.
提出了一种采用恒车头距控制策略的混合动力汽车排行实时能量优化算法。混合动力汽车的驱动功率可以在电动机和内燃机之间进行分配。电力分配使能源效率得到了可评估的提高。结合经典的协同自适应巡航控制(CACC)算法提出的控制策略,评估了队列中主车辆的最优能量管理策略。通过建立仿真实验,验证了控制系统的管柱稳定性和实时能量优化性能。
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引用次数: 1
Analysis and Prevention of Chain Collision in Traditional and Connected Vehicular Platoon 传统与互联车辆排链碰撞分析与预防
Pub Date : 2020-12-18 DOI: 10.1109/CVCI51460.2020.9338496
Kan Wang, Haoran Liu, Jie Zeng, Chengyong Niu, Fei Cao, J. Ji
Vehicle chain collision is considered to be one of the main causes that lead to serious casualties and reduce traffic efficiency. In this paper, the dynamic process of chain collision is investigated based on the virtual mass-spring-damper (MSD) model, and the ideal values of virtual spring constant and damping coefficient are determined for collision avoidance by optimization method. Simulations have been performed when a vehicle slows down suddenly on a single-lane road, and the causes that lead to chain collision have been discussed. It can be seen from the simulation results that connected vehicles break the trend of decreasing inter-vehicle spacing as it propagates down the line of platoon, and the probability of chain collisions in the vehicular platoon is reduced and the overall safety of the platoon is improved.
车辆连锁碰撞被认为是造成严重人员伤亡和降低交通效率的主要原因之一。基于虚拟质量-弹簧-阻尼器(MSD)模型研究了链条碰撞的动力学过程,并通过优化方法确定了避免碰撞的虚拟弹簧常数和阻尼系数的理想值。对车辆在单车道道路上突然减速的情况进行了仿真,并对导致连锁碰撞的原因进行了讨论。从仿真结果可以看出,互联车辆在沿队列传播过程中打破了车间距减小的趋势,降低了车辆队列中发生连锁碰撞的概率,提高了车辆队列的整体安全性。
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引用次数: 1
Optimal Eco-driving Control for Plug-in Hybrid Electric Vehicles Based on Neural Network 基于神经网络的插电式混合动力汽车最优生态驾驶控制
Pub Date : 2020-12-18 DOI: 10.1109/CVCI51460.2020.9338559
Jie Li, Z. Lei, ZhiHang Chen, Zheng Chen, Yonggang Liu
with the development of intelligent and connected vehicles, a novel approach for energy-saving, i.e. eco-driving control, has attracted much attention from relative researchers. The combination of eco-driving control and plug-in hybrid electric vehicles provide an opportunity to achieve further energy-saving for transportation. In this paper, an optimal eco-driving control strategy is proposed for plug-in hybrid electric vehicles based on the neural network. In order to mitigate the huge computational cost of velocity optimization and powertrain control, an efficient hierarchical optimal control strategy is proposed. An artificial neural network is constructed for the modeling of optimal energy cost. This optimal energy cost model is applied as objective function in the solving of the optimal eco-driving problem. The simulation results show that the proposed method can improve fuel economy by 4.29-12.71%, compared with conventional eco-driving control strategy. The neural network based optimal energy cost model significantly heightens the computational efficiency, with small sacrifice for fuel economy compared to optimal bench mark.
随着智能网联汽车的发展,一种新的节能途径即生态驾驶控制受到了相关研究人员的关注。生态驾驶控制和插电式混合动力汽车的结合为进一步实现交通节能提供了机会。提出了一种基于神经网络的插电式混合动力汽车最优生态驾驶控制策略。为了减轻速度优化和动力系统控制的巨大计算成本,提出了一种高效的分层最优控制策略。建立了一个人工神经网络,对最优能源成本进行建模。将该最优能源成本模型作为求解最优生态驾驶问题的目标函数。仿真结果表明,与传统的生态驾驶控制策略相比,该方法可将燃油经济性提高4.29 ~ 12.71%。基于神经网络的最优能量成本模型显著提高了计算效率,与最优基准相比,燃油经济性的牺牲很小。
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引用次数: 1
A Distributed Algorithm Based on Local Centrality for Dynamic Social Network Re-construction in Multi-Agent Systems 基于局部中心性的分布式多智能体系统动态社会网络重构算法
Pub Date : 2020-12-18 DOI: 10.1109/CVCI51460.2020.9338641
Bing Xie, Xingju Lu
In this paper, we focus on a self-adaptive network reconstruction problem in a distributed multi-agent system. In this system, the relationship among agents forms a complex network, in which each agent plays two roles, task execution and communication. As agents move, the topology of the relationship changes, which could reduce the system's performance. To guarantee the performance, we design a local centrality for evaluating the vitality of nodes in the network, and propose a distributed re-construction algorithm (DRA) based on the local centrality for re-constructing the dynamic network. To test the efficiency of DRA, we integrate DRA into our former proposed dynamic task allocation algorithm to form a new dynamic task allocation algorithm. The experiment shows that our new improved algorithm performs more efficiently when compared to other dynamic task allocation algorithms. The results illustrate the efficiency of reconstructed dynamic complex networks, which also indicates that the local centrality preforms efficient. Finally, we replace the local centrality with degree centrality and LocalRank in DRA and execute a series of experiments for performance evaluation. The results demonstrate the high efficiency of LC.
本文研究了分布式多智能体系统中的自适应网络重构问题。在这个系统中,智能体之间的关系形成了一个复杂的网络,每个智能体扮演着任务执行和通信两个角色。随着代理的移动,关系的拓扑结构会发生变化,这可能会降低系统的性能。为了保证性能,我们设计了一个局部中心性来评估网络中节点的活力,并提出了一种基于局部中心性的分布式重构算法(DRA)来重构动态网络。为了验证DRA算法的有效性,我们将DRA算法集成到之前提出的动态任务分配算法中,形成一个新的动态任务分配算法。实验表明,与其他动态任务分配算法相比,改进后的算法具有更高的效率。结果表明,重构的动态复杂网络是有效的,局部中心性是有效的。最后,我们将DRA中的局部中心性替换为度中心性和LocalRank,并进行了一系列的性能评估实验。结果表明了LC的高效率。
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引用次数: 0
Optimization of channel dimensions and gas diffusion layer thickness based on mass transfer characteristics of proton exchange membrane fuel cell 基于质子交换膜燃料电池传质特性的通道尺寸和气体扩散层厚度优化
Pub Date : 2020-12-18 DOI: 10.1109/CVCI51460.2020.9338549
Zhina Wang, Yujie Ding, Liangfei Xu, Zunyan Hu, Huize Liu, Jianqiu Li, Yishu Zhang, M. Ouyang
To improve the volume power density of proton exchange membrane fuel cell (PEMFC), a design of graphite bipolar plate straight channel characterized by narrow ribs is studied in this article. A three-dimensional multiphase model of PEMFC is employed to analyze the effects of the geometric parameters on the mass transfer characteristics and power density. The results show that smaller channel width and channel depth can enhance water removal and gas transport, which could increase the fuel cell performance. However, the influence of gas diffusion layer (GDL) thickness on fuel cell performance is not monotonous which means that there is an optimal value. The overall dimensions are optimized with volume power density as objective function. The best performance is obtained when the channel width, channel depth and GDL thickness are 0.1, 0.2 and 0.05 mm, respectively. Compared with the conventional channel design, the volume power density of optimal channel is significantly increased by 211.32% at 0.6 V.
为了提高质子交换膜燃料电池(PEMFC)的体积功率密度,研究了窄肋石墨双极板直通道的设计。采用三维多相模型分析了几何参数对PEMFC传质特性和功率密度的影响。结果表明,减小沟道宽度和沟道深度可以增强水的去除和气体的输运,从而提高燃料电池的性能。然而,气体扩散层(GDL)厚度对燃料电池性能的影响并非单一的,存在一个最优值。以体积功率密度为目标函数对整体尺寸进行优化。当通道宽度、通道深度和GDL厚度分别为0.1、0.2和0.05 mm时,性能最佳。与传统通道设计相比,优化后的通道在0.6 V时的体积功率密度显著提高了211.32%。
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引用次数: 0
Modeling and simulation of coordinated driving and braking control for fuel cell hybrid electric vehicle 燃料电池混合动力汽车驱动与制动协调控制建模与仿真
Pub Date : 2020-12-18 DOI: 10.1109/CVCI51460.2020.9338542
Hang Li, Jianqiu Li, Jiayi Hu, Jingkang Li, Zunyan Hu, Liangfei Xu, M. Ouyang
The fuel cell hybrid electric vehicle (FCHEV) is a new type of vehicle with the advantages of high efficiency and environmental protection. As the government and society pay more and more attention to environmental and energy issues, the development of FCHEV has entered an important stage. The control algorithm of FCHEV is a key technology of new energy vehicles and requires research. This research mainly focuses on the power system modeling and the longitudinal dynamics control and simulation of FCHEV. Based on the tire model, a new slip ratio estimation strategy was proposed. The target drive torque control algorithm and the anti-slip control algorithm adopt the feedforward control and Proportional-integral feedback control. The hydraulic braking force and the regenerative braking force were distributed to ensure that the motor exerts the maximum regenerative braking capability, while the braking force distribution meets the requirements of the ECE braking regulations. On the MATLAB/Simulink software platform, a FCHEV power system model and a coordinated driving and braking control model were established. Through simulations in different working conditions, this paper proved the performance of the new slip ratio estimation algorithm and the feasibility of the dynamics control algorithm.
燃料电池混合动力汽车(FCHEV)是一种具有高效、环保等优点的新型汽车。随着政府和社会对环境和能源问题的日益重视,FCHEV的发展进入了一个重要阶段。混合动力汽车的控制算法是新能源汽车的一项关键技术,需要深入研究。本文主要研究了动力系统建模和混合动力汽车的纵向动力学控制与仿真。在轮胎模型的基础上,提出了一种新的滑移率估计策略。目标驱动转矩控制算法和防滑控制算法采用前馈控制和比例积分反馈控制。对液压制动力和再生制动力进行分配,保证电机发挥最大再生制动能力,制动力分配满足ECE制动法规要求。在MATLAB/Simulink软件平台上,建立了fhev动力系统模型和驱动与制动协调控制模型。通过不同工况下的仿真,验证了滑移率估计算法的性能和动态控制算法的可行性。
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引用次数: 0
Fast Dynamic Response Control for Bidirectional Single-stage Isolated Matrix Converter 双向单级隔离矩阵变换器的快速动态响应控制
Pub Date : 2020-12-18 DOI: 10.1109/CVCI51460.2020.9338646
Xiangjie Li, Bin Duan, Jinqiu Song, Yifeng Li, Dongxiang Wan, Chenghui Zhang
Bidirectional single-stage isolated matrix converter(BSMIC) has a great application prospect in battery testing and electric vehicles charging systems with the advantages of wide power transfer range and high efficiency. In battery testing systems, it also needs a fast dynamic response. This paper proposes a hybrid modulation and control strategy to realize the fast dynamic response. A hybrid modulation strategy is proposed, which consists of a seven-segments space vectors pulse wide modulation(SS-SVPWM) for the matrix converter semi-stage and a phase-shift modulation for the H-bridge semi-stage. Then, a dual-loop control strategy is proposed. Both modulation ratio and phase-shift angle are used to control the output current. Finally, simulation results verify the effectiveness of the proposed modulation and control strategy.
双向单级隔离矩阵变换器(BSMIC)具有功率传输范围广、效率高的优点,在电池测试和电动汽车充电系统中具有广阔的应用前景。在电池测试系统中,也需要快速的动态响应。为了实现快速的动态响应,本文提出了一种混合调制与控制策略。提出了一种混合调制策略,该策略由矩阵变换器半级的七段空间矢量脉冲宽调制(SS-SVPWM)和h桥半级的相移调制组成。然后,提出了一种双环控制策略。通过调制比和相移角来控制输出电流。最后,仿真结果验证了所提调制控制策略的有效性。
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引用次数: 1
Research on the Control Method of Auto AMT Variable Parameter Shift Process 自动AMT变参数换挡过程控制方法研究
Pub Date : 2020-12-18 DOI: 10.1109/CVCI51460.2020.9338565
Haonan Zhang, Youkun Zhang, Jianhua Wang, Zhifei Xue
In order to shorten the power interruption time of the automobile AMT shift process, and restrain the shift shock, aiming at the control problem of the shifting actuator, the AMT variable parameter shift process control strategy is proposed. This method divides the shift process into three stages according to the synchronizer working characteristics, and adopts different control strategies. According to the fuzzy control theory, the fuzzy criterion rules are established to automatically determine the stage boundary point of the synchronizer shift process, and adopt different motor shift control strategies at each stage. It monitors whether the shift process is normal by means of redundant judgment. The test results show that this method can effectively shorten the shift time.
为了缩短汽车AMT换挡过程的动力中断时间,抑制换挡冲击,针对换挡执行器的控制问题,提出了AMT变参数换挡过程控制策略。该方法根据同步器的工作特点,将换挡过程分为三个阶段,并采用不同的控制策略。根据模糊控制理论,建立模糊判据规则,自动确定同步器换挡过程的阶段边界点,并在每个阶段采用不同的电机换挡控制策略。它通过冗余判断的方式监控换挡过程是否正常。试验结果表明,该方法能有效缩短移位时间。
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引用次数: 0
Technical assessment and feasibility validation of liquid hydrogen storage and supply system for heavy-duty fuel cell truck 重型燃料电池卡车液氢储供系统技术评估与可行性验证
Pub Date : 2020-12-18 DOI: 10.1109/CVCI51460.2020.9338639
Qing Wang, Jianqiu Li, Y. Bu, Liangfei Xu, Yujie Ding, Zunyan Hu, Ruimin Liu, Yunfei Xu, Zhidong Qin
In this paper, the advantages and disadvantages of compressed gaseous hydrogen system and liquid hydrogen system are compared and analyzed from the perspective of hydrogen storage density and energy consumption. It is proved that on-board liquid hydrogen system is the most economical and efficient and environmentally friendly choice for heavy-duty trucks which are running continuously at high speed and long distance. This paper also conducted a joint test of a large-capacity liquid hydrogen system and a fuel cell system. The results show that the on-board liquid hydrogen system can provide relatively stable pressure for the fuel cell stack at dynamic and steady-state conditions. The liquid hydrogen system is highly compatible with fuel cell system and can be applied to high-power fuel cell system. This study makes it promising to develop a new generation of heavy-duty fuel cell truck with long driving range, high load capacity and high power.
本文从储氢密度和能耗的角度对压缩气态氢系统和液氢系统的优缺点进行了比较分析。实践证明,车载液氢系统是高速、长距离连续行驶的重型卡车最经济、高效、环保的选择。本文还对大容量液氢系统和燃料电池系统进行了联合试验。结果表明,在动态和稳态工况下,车载液氢系统均可为燃料电池堆提供相对稳定的压力。液氢系统与燃料电池系统具有高度的兼容性,可应用于大功率燃料电池系统。这项研究为开发出长续航里程、高载重能力、大功率的新一代重型燃料电池卡车提供了前景。
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引用次数: 7
Research on the metaphorical mapping method between the design concept of intelligent Internet connected vehicle and multi-sensory design elements 智能网联汽车设计理念与多感官设计要素的隐喻映射方法研究
Pub Date : 2020-12-18 DOI: 10.1109/CVCI51460.2020.9338519
Bangbei Tang, Yingzhang Wu, Xiaolin Tang, Wenyu He, Shengnan Chen, Wenrui Feng
In order to improve the accuracy of the expression of the design concept of ICV, this paper puts forward a metaphor mapping method between ICV design concept and multi-sensory design elements, analyzes the metaphor mapping principle between the design concept and multi-sensory design elements, establishes a mathematical model based on the “entropy method” for the metaphor mapping between the design concept of ICV and multi-sensory design elements, and designs the vehicle design concept and multi-sensory design elements The system and device of metaphorical mapping of multi-sensory design elements verify the feasibility of the proposed method with the mapping process of design concept and multi-sensory design elements in the forward design of an intelligent Internet connected SUV.
为了提高ICV设计理念表达的准确性,本文提出了ICV设计理念与多感官设计要素之间的隐喻映射方法,分析了ICV设计理念与多感官设计要素之间的隐喻映射原理,建立了基于“熵法”的ICV设计理念与多感官设计要素之间隐喻映射的数学模型。多感官设计要素隐喻映射系统及装置,以某智能互联SUV正向设计中的设计理念与多感官设计要素映射过程验证了所提方法的可行性。
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引用次数: 0
期刊
2020 4th CAA International Conference on Vehicular Control and Intelligence (CVCI)
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