检索结果-内蒙古大学图书馆

China SAE Congress, 2021

作者： Zeng, Xiaohua Song, Meijie Song, Dafeng Niu, Chaofan State Key Laboratory of Automobile Simulation and Control Jilin University Changchun China

ISBN: (纸本)9789811938412

Proton exchange membrane fuel cell (PEMFC) is composed of several coupled components with complex nonlinear characteristics. Coordinating the work of each component and effectively controlling the air supply system are key measures to improve the efficiency of the system. In order to control the air supply system of PEMFC, this paper explores the influence of different input parameters on the energy consumption efficiency of the system, quantifies the relationship between the variables, and studies the change law of power consumption efficiency and peroxide ratio of the system. After that, separate feed-forward, feed-forward + feedback and LQR control algorithms are used to control the optimal peroxide ratio respectively, and the algorithms are verified by Matlab/Simulink simulation. The results show that the LQR algorithm has the best dynamic response speed, which is shortened by 17.0% and 47.1% compared with the feed-forward + feedback control and separate feed-forward control systems. At the same time, the maximum control error of LQR algorithm is the smallest, which is 52.6% and 84.6% lower than that of feed-forward + feedback control and separate feed-forward control. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： MATLAB

来源：评论

学校读者我要写书评

暂无评论

control of Vehicle Beyond the Stability Limits 5

Control of Vehicle Beyond the Stability Limits

引用

5th IEEE International Conference on Automation, Electronics and Electrical Engineering, AUTEEE 2022

作者： Wang, Pengyu Ji, Yipei Jilin University State Key Laboratory of Automotive Simulation and Control Changchun China

ISBN: (纸本)9781665471978

A trajectory tracking controller of a drifting vehicle is developed in this paper. To accurately achieve path tracking, a control law is derived from expert driver. The synthetic vehicle course angle and yaw rate is derived. A front tire simplifying assumption and wheel-speed control at rear tires is adopted in the controller. simulation demonstrates good tracking of a trajectory with varying curvature. © 2022 IEEE.

关键词： Autonomous vehicles

来源：评论

学校读者我要写书评

暂无评论

Aerodynamic Performance of Two-Vehicle Platooning of DrivAer Model 6th

Aerodynamic Performance of Two-Vehicle Platooning of DrivAer...

引用

6th Symposium on Fluid-Structure-Sound Interactions and control, FSSIC 2023

作者： Li, Jinji Tong, Zhongqing Zhang, Yingchao Chen, Tao State Key Laboratory of Automotive Simulation and Control Jilin University Changchun130022 China FAW Jiefang Commercial Vehicle Development Institute Changchun130013 China

ISBN: (纸本)9789819762101

With the gradual maturity of intelligent driving technology, driving in platoon is easy to achieve, which might benefit for energy saving. Hence, it is urgent to discover the mechanism of aerodynamic in platoon condition. Aerodynamic drag and mechanism in two-vehicle platooning in different spacing are studied by numerical method with the DrivAer model. As spacing grows, three configuration models share the same law, but the leading and trailing car appear the opposite drag change compared with that in the isolated condition. Pressure changes of some crucial parts and wake field are analyzed in detail. Some new styles of vehicle shape might be needed for driving in platoon. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Aerodynamic drag

来源：评论

学校读者我要写书评

暂无评论

An Integrated GNSS/INS/DR Positioning Strategy Considering Nonholonomic Constraints for Intelligent Vehicle 6

An Integrated GNSS/INS/DR Positioning Strategy Considering N...

引用

6th CAA International Conference on Vehicular control and Intelligence, CVCI 2022

作者： Chen, Guo-Ying Wang, Jia-Qi Hu, Hong-Yu Jilin University State Key Laboratory of Automotive Simulation and Control Changchun China

ISBN: (数字)9781665453745

ISBN: (纸本)9781665453745

The realization of decision-making, trajectory planning, and motion control of intelligent vehicles highly depends on the precise and continuous position information. To provide reliable pose information during GNSS (Global Navigation Satellite Systems)outage, an integrated position strategy based on the GNSS, INS (Inertial Navigation System), DR (dead reckoning) considering nonholonomic constraints (NHC) was proposed in this paper. First, a positioning algorithm of GNSS/INS was established using an Error state Kalman Filer (ESKF). Nonholonomic constraints and vehicle speed were used to correct the navigation error to improve positioning accuracy. Then, the available time of the algorithm during GNSS signal outage was further extended by designing a DR system based on vehicle dynamics. An Extended Kalman Filter (EKF) was used to process the nonlinear system and the information of wheel speed and front wheel angle were integrated into the system. Finally, the fusion positioning algorithm was validated by NI HIL platform. The results showed that, during GNSS outage, the positioning strategy proposed in this paper could reduce the root means square errors (RMSE) of positioning accuracy, compared to the GNSS/INS positioning algorithm, by 78.2% along x-axis and 83.0% along y-axis. © 2022 IEEE.

关键词： Inertial navigation systems

来源：评论

学校读者我要写书评

暂无评论

Shift schedule design of thirty-two-speed binary logic transmission based on man-vehicle-road System 6

Shift schedule design of thirty-two-speed binary logic trans...

引用

6th CAA International Conference on Vehicular control and Intelligence, CVCI 2022

作者： Zhou, Lanqi Zeng, Xiaohua Liang, Weizhi Yang, Dongpo Song, Dafeng Jilin University State Key Laboratory of Automotive Simulation and Control Changchun China

ISBN: (数字)9781665453745

ISBN: (纸本)9781665453745

Binary logic transmission (BLT) is an emerging automatic transmission. Because of its high transmission efficiency, high power density, strong load capacity and compact structure, it has been widely used in military vehicles and other special vehicles in recent years. The traditional shift schedules will lead to frequent shifts of the thirty-two-speed BLT and cumbersome solutions for the jump points. Therefore, referring to the speed ratio adjustment strategy of the continuously variable transmission, the paper proposes a dynamic speed ratio adjustment strategy and an economic speed ratio adjustment strategy suitable for the thirty-two-speed BLT, which can ensure the power and economy of vehicle and achieve reasonable gear jumping. At the same time, considering the influence of different road conditions on the shift schedule, the paper introduces the road gradient and vehicle mass to modify the above shift schedule, and designs a thirty-two-speed BLT shift schedule based on the man-vehicle-road system. Based on the physical simulation platform of thirty-two-speed BLT, the proposed shift schedule is simulated and verified. The results show that the shift schedule can meet the demand of vehicle power performance and economic performance, solve the problem of frequent shifts, and significantly enhance the vehicle climbing performance, give full play to the backup power of the vehicle, and effectively improve the working condition adaptability of the thirty-two-speed BLT. © 2022 IEEE.

关键词： Roads and streets

来源：评论

学校读者我要写书评

暂无评论

Driving characteristics of shape memory alloy wires under different loads

Driving characteristics of shape memory alloy wires under di...

引用

2022 International Conference on Optoelectronic Information and Functional Materials, OIFM 2022

作者： Shen, Chuanliang Yu, Jing Xu, Xiaodong Zheng, Chengfeng Li, Shengnan State Key Laboratory of Automotive Simulation and Control Jilin University Changchun China

ISBN: (数字)9781510655126

ISBN: (纸本)9781510655119

The driving characteristics of SMA actuators mainly include the range, force and speed of the actuator, and these driving characteristics are determined by the alloy composition and use conditions. The alloy composition and service conditions affect the stress, strain and phase transformation speed of the SMA wire during the phase transformation, and affect the driving characteristics of the SMA wire. Using the shape memory alloy seat drive element with one-way shape memory effect, two-way drive can be realized under the action of bias force. The driving characteristics of alloy wires under the action of different constant loads and bias springs with different stiffness, including the influence laws of driving displacement, driving force and response time. © 2022 SPIE.

关键词： Phase transitions

来源：评论

学校读者我要写书评

暂无评论

Surface‑Alloyed Nanoporous Zinc as Reversible and Stable Anodes for High‑Performance Aqueous Zinc‑Ion Battery

引用

Nano-Micro Letters 2022年第8期14卷 58-71页

作者： Huan Meng Qing Ran Tian-Yi Dai Hang Shi Shu-Pei Zeng Yong-Fu Zhu Zi Wen Wei Zhang Xing-You Lang Wei-Tao Zheng Qing Jiang Key Laboratory of Automobile Materials(Jilin University) Ministry of EducationSchool of Materials Science and Engineeringand Electron Microscopy CenterJilin UniversityChangchun 130022People’s Republic of China State Key Laboratory of Automotive Simulation and Control Jilin UniversityChangchun 130022People’s Republic of China

Metallic zinc(Zn)is one of the most attractive multivalent-metal anode materials in post-lithium batteries because of its high abundance,low cost and high theoretical ***,it usually suffers from large voltage polarization,low Coulombic efficiency and high propensity for dendritic failure during Zn stripping/plating,hindering the practical application in aqueous rechargeable zinc-metal batteries(AR-ZMBs).Here we demonstrate that anionic surfactant-assisted in situ surface alloying of Cu and Zn remarkably improves Zn reversibility of 3D nanoporous Zn electrodes for potential use as high-performance AR-ZMB anode *** a result of the zincophilic ZnxCuy alloy shell guiding uniform Zn deposition with a zero nucleation overpotential and facilitating Zn stripping via the ZnxCuy/Zn galvanic couples,the self-supported nanoporous ZnxCuy/Zn electrodes exhibit superior dendrite-free Zn stripping/plating behaviors in ambient aqueous electrolyte,with ultralow polarizations under current densities up to 50 mA cm^(‒2),exceptional stability for 1900 h and high Zn *** enables AR-ZMB full cells constructed with nanoporous ZnxCuy/Zn anode and K_(z)MnO_(2)cathode to achieve specific energy of as high as~430 Wh kg^(‒1)with~99.8%Coulombic efficiency,and retain~86%after long-term cycles for>700 h.

关键词： Nanoporous metal Zinc-based alloy anode Aqueous zinc-ion batteries Surface alloying

来源：评论

学校读者我要写书评

暂无评论

Research and Design of Soft Switch Technology in New Energy Vehicle Wireless Charging System

Research and Design of Soft Switch Technology in New Energy ...

引用

作者： Wang, Jun Liu, Qiang Huo, Jinming Cantero, Rosa School of Automotive Engineering of Jilin Engineering Normal University Jilin Changchun China Jilin Changchun China State Key Laboratory of Automotive Simulation and Control Jilin University Jilin Changchun China University of Frankfurt Frankfurt Germany

Wireless power supply technology as an emerging new energy vehicle power real-time supply technology to the development of new energy vehicles has brought a lot of convenience. The wireless power supply technology of new energy vehicles can reduce the amount of on-board batteries and even do not need to carry batteries. By laying the guide rail under the road, the electric energy is transmitted to the car in a non-electric contact way using electromagnetic technology for real-time use. However, the transmission efficiency of the wireless power supply system for new energy vehicles is not high, which greatly increases the loss of the system and reduces the effective energy supply of the system. The soft switching technology proposed in this paper can control the switching appliance under the zero voltage and zero current environment, so as to reduce the circuit switching loss. Therefore, soft switch technology is widely used in wireless power supply device can effectively improve the efficiency of the whole system. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Secondary batteries

来源：评论

学校读者我要写书评

暂无评论

Review on laser directed energy deposited aluminum alloys

引用

International Journal of Extreme Manufacturing 2024年第2期6卷 84-131页

作者： Tian-Shu Liu Peng Chen Feng Qiu Hong-Yu Yang Nicholas Tan Yew Jin Youxiang Chew Di Wang Ruidi Li Qi-Chuan Jiang Chaolin Tan Singapore Institute of Manufacturing Technology(SIMTech) Agency for ScienceTechnology and Research(A∗STAR)5 Cleantech LoopSingapore 636732Singapore State Key Laboratory of Automotive Simulation and Control Jilin UniversityChangchun 130025People’s Republic of China Key Laboratory of Automobile Materials Ministry of Education and Department of Materials Science and EngineeringJilin UniversityChangchun 130025People’s Republic of China School of Mechanical&Automotive Engineering South China University of TechnologyGuangzhou 510640People’s Republic of China State Key Laboratory of Powder Metallurgy Central South UniversityChangsha 410083People’s Republic of China

Lightweight aluminum(Al)alloys have been widely used in frontier fields like aerospace and automotive industries,which attracts great interest in additive manufacturing(AM)to process high-value Al *** a mainstream AM technique,laser-directed energy deposition(LDED)shows good scalability to meet the requirements for large-format component manufacturing and ***,LDED Al alloys are highly challenging due to their inherent poor printability(*** laser absorption,high oxidation sensitivity and cracking tendency).To further promote the development of LDED high-performance Al alloys,this review offers a deep understanding of the challenges and strategies to improve printability in LDED Al *** porosity,cracking,distortion,inclusions,element evaporation and resultant inferior mechanical properties(worse than laser powder bed fusion)are the key challenges in LDED Al *** parameter optimizations,in-situ alloy design,reinforcing particle addition and field assistance are the efficient approaches to improving the printability and performance of LDED Al *** underlying correlations between processes,alloy innovation,characteristic microstructures,and achievable performances in LDED Al alloys are *** benchmark mechanical properties and primary strengthening mechanism of LDED Al alloys are *** review aims to provide a critical and in-depth evaluation of current progress in LDED Al *** opportunities and perspectives in LDED high-performance Al alloys are also outlined.

关键词： additive manufacturing laser directed energy deposition(LDED) aluminum alloys printability aluminum matrix composite auxiliary fields mechanical properties

来源：评论

学校读者我要写书评

暂无评论

Online Data-Driven Event-Triggered control for Heterogeneous Nonlinear Platoons Under Communication Constraints

Online Data-Driven Event-Triggered Control for Heterogeneous...

引用

2023 China Automation Congress, CAC 2023

作者： Guo, Jingzheng Guo, Hongyan Wang, Han Zhao, Xu Shi, Wanqing College of Communication Engineering Jilin University Changchun China College of Communication Engineering Jilin University State Key Laboratory of Automotive Simulation and Control Changchun China

ISBN: (纸本)9798350303759

In this study, we propose an online learning data-driven event-triggered control approach for the synthesis of control in heterogeneous nonlinear platoons under communication constraints. The system is estimated using a Gaussian process(GPs) regression based on a squared exponential(SE) kernel, while the controller design is implemented through feedback linearization. Furthermore, event-triggered conditions are constructed to guarantee system stability. Through simulation comparisons with time-triggered control utilizing fixed sampling, the superiority of the proposed method is demonstrated. © 2023 IEEE.

关键词： Feedback linearization

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：