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Analysis and Application of Privacy Computing Technology in the Internet of Vehicles

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Analysis and Application of Privacy Computing Technology in ...

Chassis Coordinated Control for Full X-by-Wire Vehicles-A Review

2022中国汽车工程学会年会暨展览会

作者： wang Yan Cui Mingguang wang zhenpo Beijing Bitnei Co. Ltd.

Cross-industry and cross-domain data fusion has driven the development of the intelligent and connected vehicles(ICV)ecology,but also faces the challenge of data *** cross-border data incidents of Tesla and Didi have sounded the alarm for car companies,so each company has gradually tightened and restricted the use of *** recent years,the release of a series of Internet of Vehicles(IoV) data security specifications is gradually constraining the application of IoV data,and how to realize the safe sharing and safe circulation of data has become the concern of *** years of development,privacy computing technology has begun to be applied in many *** makes data available and invisible on the premise of ensuring that the original data of all parties do not go out of the private ***,it not only ensures data security but also creates data *** paper takes the construction of the privacy computing system of the national supervision platform for new energy vehicles as the background,draws on the experience and harvest of the data security fusion technology research of vehicles,charging piles,electricity,and networks,and analyzes the technical difficulties and characteristics of privacy computing in the IoV *** paper designs a technical solution for the application of the IoV industry,and proposes the application scenarios of privacy computing in the field of ICV.

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Chinese Journal of Mechanical Engineering 2021年第2期34卷 1-25页

作者： Lei Zhang Zhiqiang Zhang zhenpo wang Junjun Deng David G.Dorrell National Engineering Laboratory for Electric Vehicles Beijing Institute of TechnologyBeijing 100081China Collaborative Innovation Center for Electric Vehicles in Beijing Beijing Institute of TechnologyBeijing 100081China School of Electrical and Information Engineering University of the WitwatersrandJohannesburgSouth Africa

An X-by-wire chassis can improve the kinematic characteristics of human-vehicle closed-loop system and thus active safety especially under emergency scenarios via enabling chassis coordinated *** paper aims to provide a complete and systematic survey on chassis coordinated control methods for full X-by-wire vehicles,with the primary goal of summarizing recent reserch advancements and stimulating innovative *** condition identification including driver’s operation intention,critical vehicle states and road adhesion condition and integrated control of X-by-wire chassis subsystems constitute the main framework of a chassis coordinated control *** steering and braking maneuvers,different driving condition identification methods are described in this *** are the trigger conditions and the basis for the implementation of chassis coordinated *** the vehicles equipped with steering-by-wire,braking-by-wire and/or wire-controlled-suspension systems,state-of-the-art chassis coordinated control methods are reviewed including the coordination of any two or three chassis ***,the development trends are discussed.

关键词： X-by-wire systems Chassis coordinated control Driving condition identification Active safety

China's battery electric vehicles lead the world:achievements in technology system architecture and technological breakthroughs

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Green Energy and Intelligent Transportation 2022年第1期1卷 2-25页

作者： Hongwen He Fengchun Sun zhenpo wang Cheng Lin Chengning Zhang Rui Xiong Junjun Deng Xiaoqing Zhu Peng Xie Shuo Zhang Zhongbao Wei Wanke Cao Li Zhai National Engineering Research Centre of Electric Vehicles Beijing Institute of TechnologyBeijing100081PR China

Developing new energy vehicles has been a worldwide consensus,and developing new energy vehicles characterized by pure electric drive has been China's national *** more than 20 years of high-quality development of China's electric vehicles(EVs),a technological R&D layout of“Three Verticals and Three Horizontals”has been created,and technological advantages have been *** a result,China's new energy vehicle market has ranked first in the world since *** systematically solve the key problems of battery electric vehicles(BEVs)such as“driving range anxiety,long battery charging time,and driving safety hazards”,China took the lead in putting forward a“system engineering-based technology system architecture for BEVs”and clarifying its *** paper analyzes the research status and progress of the three core components of this architecture,namely,“BEV platform,charging/swapping station,and real-time operation monitoring platform”,and their key technological *** three major demonstration projects of the 2008 Beijing Olympic Games,the 2022 Beijing Winter Olympics,and the intelligent and connected autonomous battery electric bus project are discussed to specify the applications of BEVs in *** key research directions for upgrading BEV technologies remain to be further improving the vehicle-level all-climate environmental adaptability and all-day safety of BEVs,systematically solving the charging problem of BEVs and improving their application convenience,and safeguarding safety with early warning and implementing active/passive safety protection for the whole life cycle of power batteries on the basis of BEVs'operation big *** have acquired new technological features such as intelligent and networked technology empowerment,extensive integration of control-by-wire systems,a platform of chassis hardware,and modularization of functional software.

关键词： Battery electric vehicle(BEV) Charging/swapping station Operation monitoring platform Technology system Motor drive system All-climate Battery Battery safety China

Experimental study on heat generation and dissipation performance of PEV Lithium-ion battery

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High Technology Letters 2010年第1期16卷 1-5页

作者：孙逢春 Chen Ke Lin Cheng wang zhenpo School of Mechanical and Vehicle Engineering Beijing Institute of Technology Beijing 100081 P.R. China

Based on the lithium-ion battery pure electric vehicle (PEV) application, two capacity types of batteries are applied in thermal characteristic experiments. With the experimental comparison method, battery thermal characteristics and heat generation mechanism are studied. Experiments of batteries in cases of different dimensions, batteries with different air cooling velocity and two capacity types of batteries in free convection environment are put forward. Battery heat generation performance, heat dissipation performance and comparison of different capacity types' batteries are researched and summarized. Conclusions of battery heat generation and dissipation in PEV applications, important battery thermal management factors and suggestions are put forward. © by High Technology Letters Press.

关键词：纯电动汽车电池性能锂离子电池实验比较热量耗散电池容量冷却速度

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大数据驱动的动力电池健康状态估计方法综述

机械工程学报 2023年第2期59卷 151-168页

作者：王震坡王秋诗刘鹏张照生北京理工大学电动车辆国家工程实验室北京100081 北京电动车辆协同创新中心北京100081 新能源汽车北京实验室北京100081 北京理工大学重庆创新中心重庆401120

动力电池健康状态估计是电池管理系统关键算法之一,对提高动力电池能量利用效率、降低电池热失控风险,以及动力电池的维保和残值评估具有重要意义。对比分析试验法、模型法、数据驱动法的优势和不足,并以数据驱动方法为核心,分别从动力... 详细信息

动力电池健康状态估计是电池管理系统关键算法之一,对提高动力电池能量利用效率、降低电池热失控风险,以及动力电池的维保和残值评估具有重要意义。对比分析试验法、模型法、数据驱动法的优势和不足,并以数据驱动方法为核心,分别从动力电池健康状态数据集构建、健康状态特征参数提取、健康状态估计模型三个方面对现阶段健康状态估计方法的理论基础和技术方案进行综述。总结常用的大数据采集方法以及数据预处理方法,明确大数据在健康状态评估中的意义。比较现有健康状态特征提取方法,对其优劣以及适用场景做了分析。阐述不同健康状态估计模型的基本原理,提出模型融合是未来技术发展方向。最后,面向未来大数据实车应用场景,对动力电池健康状态估计方面存在的问题和发展前景进行了总结和展望。

关键词：大数据新能源汽车动力电池健康状态

基于鲁棒积分滑模的四轮轮毂电机驱动电动汽车电液复合制动防抱死控制研究

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机械工程学报 2022年第24期58卷 243-253页

作者：张雷刘青松王震坡北京理工大学北京电动车辆协同创新中心北京100081 北京理工大学电动车辆国家工程实验室北京100081

为了充分发挥四轮轮毂电机驱动电动汽车电机制动与液压摩擦制动响应快且独立可控的优势,提高紧急制动时车辆稳定性与安全性,提出一种基于鲁棒积分滑模的电液复合制动防抱死控制策略。采用分层控制架构,上层控制器为基于鲁棒积分滑模的... 详细信息

为了充分发挥四轮轮毂电机驱动电动汽车电机制动与液压摩擦制动响应快且独立可控的优势,提高紧急制动时车辆稳定性与安全性,提出一种基于鲁棒积分滑模的电液复合制动防抱死控制策略。采用分层控制架构,上层控制器为基于鲁棒积分滑模的车轮滑移率控制,下层控制器为电液复合制动力协调分配。建立整车动力学与电液复合制动系统模型,基于Simulink-AMESim-Carsim联合仿真平台,在四种典型制动工况下对上述电液复合制动防抱死控制策略进行仿真验证。结果表明,在无需实时获取路面附着系数与轮胎纵向力的情况下,所提出的控制策略仍能消除外界干扰使车轮滑移率收敛至期望值,适用于多种紧急制动工况,响应迅速且鲁棒性强;电机再生制动与液压摩擦制动可稳定协同工作,在保证制动可靠性的同时提升了乘坐舒适性。

关键词：四轮轮毂电机驱动电动汽车电液复合制动制动防抱死控制鲁棒积分滑模

基于规则与机器学习融合的换道决策建模方法研究

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机械工程学报 2022年第4期58卷 212-221页

作者：贾寒冰刘鹏张雷王震坡北京理工大学电动车辆国家工程实验室北京100081 北京电动车辆协同创新中心北京100081

自主换道系统是智能车辆技术的重要发展方向,而换道决策是自主换道系统的关键。针对结构化道路下的自由换道场景,提出基于规则与机器学习融合的换道决策模型。针对换道决策过程中存在的多参数与非线性问题,提出基于支持向量机的换道决... 详细信息

自主换道系统是智能车辆技术的重要发展方向,而换道决策是自主换道系统的关键。针对结构化道路下的自由换道场景,提出基于规则与机器学习融合的换道决策模型。针对换道决策过程中存在的多参数与非线性问题,提出基于支持向量机的换道决策模型,并引入贝叶斯优化算法确定决策模型的最优参数。从基于规则的角度出发,分析换道决策过程中的影响因素,包括换道必要性、安全性与换道收益,并将上述规则转化为模型训练数据的新特征与安全约束,对原有训练样本进行增广,以提升支持向量机模型的分类准确率。在NGSIM数据集上进行测试验证,结果表明,仅利用周围车辆基本行驶信息进行模型训练,对换道行为预测的准确率为73.05%,而引入基于换道规则计算得到的新特征后,模型预测准确率提升至83.83%。

关键词：智能车辆换道行为决策支持向量机贝叶斯优化融合建模

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异构智能网联汽车编队延迟补偿控制研究

汽车工程 2023年第9期45卷 1573-1582页

作者：刘济铮王震坡孙逢春张雷北京理工大学机械与车辆学院北京100081 电动车辆国家工程技术研究中心北京100081

智能网联汽车多车编队行驶可有效缩短跟车间距和提升交通系统通行效率,但多车编队控制须解决异构编队控制器的普适性问题,且能够在执行器响应延迟和通讯延迟情况下保证车辆编队的弦稳定性。本文提出一种面向异构智能网联汽车编队的延迟... 详细信息

智能网联汽车多车编队行驶可有效缩短跟车间距和提升交通系统通行效率,但多车编队控制须解决异构编队控制器的普适性问题,且能够在执行器响应延迟和通讯延迟情况下保证车辆编队的弦稳定性。本文提出一种面向异构智能网联汽车编队的延迟补偿控制方法,在无须获取他车系统动力学参数及控制输入前提下,利用他车加速度信息即可实现车辆编队纵向跟踪控制;此外,提出一种基于Smith预测器的延迟补偿控制架构,分别消除和降低了执行器响应延迟和通讯延迟对车辆编队弦稳定性的影响。典型工况仿真结果表明,相较常见车辆编队控制方法,本文提出的异构车辆编队延迟补偿控制器的跟车误差降低了80.7%,有效减小了最小车头时距和跟车间距。

关键词：智能网联汽车异构车辆编队延迟补偿弦稳定性

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基于卷积神经网络的逆变器故障诊断方法

汽车工程 2022年第1期44卷 142-151页

作者：于海邓钧君王震坡孙逢春北京理工大学电动车辆国家工程实验室北京100081 北京电动车辆协同创新中心北京100081

针对车用永磁同步电机驱动系统在长期运行过程中存在的逆变器故障风险,本文中提出了一种基于卷积神经网络的逆变器故障诊断方法。首先,对三相定子电流数据进行标幺化和单位电周期电流数据筛选处理,降低电机驱动系统变转矩、变转速工况... 详细信息

针对车用永磁同步电机驱动系统在长期运行过程中存在的逆变器故障风险,本文中提出了一种基于卷积神经网络的逆变器故障诊断方法。首先,对三相定子电流数据进行标幺化和单位电周期电流数据筛选处理,降低电机驱动系统变转矩、变转速工况对故障诊断效果的影响;然后,结合卷积神经网络,发挥其提取故障特征和抗噪优势,实现逆变器故障诊断。在MATLAB/Simulink环境中搭建了车用永磁同步电机驱动系统模型,通过故障注入仿真数据和实验数据构建用于卷积神经网络训练的数据集,验证了所提出故障诊断方法的有效性。同时,探究了训练样本数据集稀疏化和电机型号差异化情况的适用性。仿真结果表明:在噪声数据和稀疏数据条件下,本文中提出的故障诊断方法具有很好的鲁棒性和普适性。

关键词：逆变器三相定子电流卷积神经网络故障诊断