检索结果-内蒙古大学图书馆

Retired Lithium-ion Batteries Screening Based on Partial Discharge Curves and an Improved Crossformer

IEEE Transactions on transportation Electrification 2025年

作者： Lin, Mingqiang Xu, Zijun Zheng, Gengfeng Meng, Jinhao Wang, Wei Wu, Ji Fujian Key Laboratory of Special Intelligent Equipment Safety Measurement and Control Fuzhou350003 China Chinese Academy of Sciences Quanzhou Institute of Equipment Manufacturing Fujian Institute of Research on the Structure of Matter Fujian Jinjiang362200 China Fujian Special Equipment Inspection and Research Institute Fuzhou350008 China Fujian Key Laboratory of Special Intelligent Equipment Safety Measurement and Control China Xi’an Jiaotong University School of Electrical Engineering Xi’an710049 China Xi’an Jiaotong University School of Management Xi’an710049 China Hefei University of Technology School of Automotive and Transportation Engineering Anhui Hefei230009 China

With the increasing number of retired lithium-ion batteries from electric vehicles, effective screening and classification are necessary to enable their secondary utilization. The existing retired lithium-ion battery screening methods have limitations in accuracy and high energy consumption. This paper proposes a method based on local discharge curves and an improved Crossformer model to reduce energy consumption and improve screening accuracy. Considering the actual conditions of retired lithium-ion batteries, features are extracted from the discharging stage. Select the segments of the capacity sequence that exhibit the most significant variation with the voltage sequence and construct a partial capacity-voltage sequence. The standard deviation and Shannon entropy of the capacity sequence, as well as the variance, energy, and the maximum amplitude of the low-frequency part of the Fourier-transformed voltage sequence, are used as features. Then, the Crossformer utilizes a flexible embedding mechanism and a hierarchical structure for handling the dependencies of the feature. The Crossformer is improved for classification by adding a cross-attention layer at the final stage of the Crossformer decoder, which enhances its ability to capture the dependencies between features and improves the model’s performance in battery screening classification. Finally, the validation of 252 retired batteries shows that the method achieves a classification accuracy of 94.74%, outperforming other advanced models, including the original Crossformer, Transformer, ResNet, and MLP models. © 2015 IEEE.

关键词： Lithium-ion batteries

来源：评论

学校读者我要写书评

暂无评论

Wear Condition Evolution of Cylinder Liner-Piston Ring on the Two-Stroke Marine Diesel Engine Through Long-Term Monitoring and Analysis of Cylinder Oil

引用

Lubrication Science 2025年第0期

作者： Xu, Yicong Guo, Zhiwei Rao, Xiang Yin, Huabin Jiang, Shaoli Wu, Mingding Zhou, Liwei Yuan, Chengqing School of Transportation and Logistics Engineering Wuhan University of Technology Wuhan China State Key Laboratory of Waterway Traffic Control and Safety Wuhan University of Technology Wuhan China Academician Workstation of China COSCO SHIPPING Co. Ltd Shanghai China COSCO SHIPPING Specialized Carriers Co. Ltd. Guangzhou China Department of Mechanical Systems Engineering Tohoku University Sendai Japan Beijing Changxin Wanlin Technology Co. Limited. Beijing China Guangzhou Branch of China Classification Society Guangzhou China

In recent years, stringent policies on low-sulfur fuel oil (LSFO) usage in the shipping industry have raised concerns regarding the reliability of two-stroke marine engines. This study conducts a longitudinal investigation of the main engine on a wood-pulp carrier fuelled with LSFO, aiming to underlying causes of cylinder wear and develop solutions. Throughout an operation period of roughly 2500 h, drain oil was sampled with the following characteristics evaluated: viscosity, basicity, moisture contents, ferrography and compound containment, as well as the concentration of trace elements, seeking to monitor the wear and lubrication status of a two-stroke marine engine. The comparative analysis of representative lubricant samples revealed that the severity of cylinder wear intensifies with engine operation when using LSFO, transitioning from rubbing wear to fatigue, cutting and sliding wear, with the corrosion-induced wear being prevalent even during the early stage of the engine lifecycle. Meanwhile, intermittent replacement of high alkalinity cylinder oil has been proven an effective solution for improving cleanliness, mitigating cylinder wear and lubricant degradation. Viscosity and basicity with high sensitivity can serve as control parameters to determine the necessity of oil replacement. To prevent the generation of severe corrosive wear, intervals for oil replacement are advised to exceed no more than 500 h. © 2025 John Wiley & Sons Ltd.

关键词： Piston rings

来源：评论

学校读者我要写书评

暂无评论

Interval trajectory tracking for AGV based on MPC 38

Interval trajectory tracking for AGV based on MPC

引用

38th Chinese control Conference, CCC 2019

作者： Xu, Hang Zhu, Jin Key Laboratory of Transportation Technology and Control Engineering Transportation Industry Shanghai Maritime University Shanghai201306 China

ISBN: (纸本)9789881563972

Aiming at the problem of AGV trajectory tracking, this paper designs an interval trajectory tracking control method based on MPC. Firstly, the vehicle kinematics model is linearized. Secondly, the model predictive control method is used, and the error between the predicted trajectory and the expected trajectory is utilized to obtain the control sequence that minimizes the performance index. Finally, two sets of experiments with straight and small curvature sinusoids were designed to verify the proposed method. The experimental results show that the AGV can travel stably in a given feasible region, which proves the effectiveness of the proposed MPC-based AGV interval trajectory tracking method. © 2019 Technical Committee on control Theory, Chinese Association of Automation.

关键词： Trajectory tracking Trajectory Roads Wheels Kinematics Simulation

来源：评论

学校读者我要写书评

暂无评论

Social Media Based transportation Research: the State of the Work and the Networking

引用

IEEE/CAA Journal of Automatica Sinica 2017年第1期4卷 19-26页

作者： Yisheng Lv Yuanyuan Chen Xiqiao Zhang Yanjie Duan Naiqiang Li State Key Laboratory of Management and Control for Complex Systems Institute of Automation Chinese Academy of Sciences Qingdao Academy of Intelligent Industries Department of Transportation Engineering School of Transportation Science and Technology Harbin Institute of Technology

Recently, there has been an increased interest in the use of social media data as important traffic information sources. In this paper, we review social media based transportation research with social network analysis *** summarize main research topics in this field, and report collaboration patterns at levels of researchers, institutions, and countries, respectively. Finally, some future research directions are identified. © 2014 Chinese Association of Automation.

关键词： Traffic control transportation

来源：评论

学校读者我要写书评

暂无评论

Learnable Operational Design Condition Monitor for Failure Prediction in Autonomous Driving

SSRN

引用

SSRN 2025年

作者： Xu, Haowei Bian, Yougang Li, Yang Qin, Hongmao Zhou, Hanchu Chang, Fangrong Wang, Shaofei Ye, Qing State Key Laboratory of Advanced Design and Manufacturing Technology for Vehicle College of Mechanical and Vehicle Engineering Hunan University Changsha410082 China Research and Development Center of Transport Industry of Self-driving Technology China Merchants Chongqing Communications Technology Research and Design Institute Co. Ltd. Chongqing China School of Traffic and Transportation Engineering Central South University Changsha China Department of Data and System Engineering The University of Hong Kong Hong Kong School of Resources and Safety Engineering Central South University Changsha China School of Data Science China

Ensuring the safety of Autonomous Driving Systems (ADS) across diverse and unpredictable operational scenarios remains a significant challenge for accident prevention. Central to this effort is the continuous monitoring of Operational Design Conditions (ODC), which encompass both in-vehicle factors and external Operational Design Domain (ODD). However, the absence of robust methodologies to precisely identify ODC boundaries hinders the deployment and adoption of high-level ADS. This paper introduces a learnable ODC monitor designed to identify implicit operational design condition boundaries to prevent ADS failures. By integrating a state-space duality encoder and a Bayesian neural network decoder, we propose an efficient learnable ODC monitor, termed ODCNet. Furthermore, to further enhance prediction reliability, residual error analysis with linear discrimination is applied for calibrating prediction. Experimental results demonstrate ODCNet's superiority in failure prediction compared to baseline models, achieving a balance between safety and coverage. These findings contribute to advancing data-driven accident prediction and prevention strategies, ensuring safer deployments of ADS in complex environments. © 2025, The Authors. All rights reserved.

关键词： Autonomous vehicles

来源：评论

学校读者我要写书评

暂无评论

Photocatalytic degradation of mixed pollutants in aqueous wastewater using mesoporous 2D/2D TiO_(2)(B)-BiOBr heterojunction

引用

Journal of Materials Science & technology 2021年第11期70卷 176-184页

作者： Liping Han Bo Li Hao Wen Yuxi Guo Zhan Lin Guangzhou Key Laboratory of Clean Transportation Energy Chemistry School of Chemical Engineering and Light IndustryGuangdong University of TechnologyGuangzhou 510006China

There are multiple contaminants in practical wastewater;and the photodegradation of mixed pollutants is a challenge in the field of ***,we design a mesoporous 2D/2D TiO_(2)(B)-BiOBr heterojunction photocatalyst for the photodegradation of mixed *** a coupling structure results in an enhancement in the disconnection of photoexcited carriers,and the increase of absorption and reaction *** 2D/2D TiO_(2)(B)-BiOBr demonstrates outstanding photocatalytic activity for photodegrading rhodamine B(RhB),methyl orange(MO),tetracycline hydrochloride(TCH),and bisphenol A(BPA)simultaneously under visible light,which is 4.7,1.4,23 and 16.4 times as high as that of original BiOBr,*** work represents a possible solution to devise promising and efficient photocatalysts for the treatment of practical wastewater in the near future.

关键词： 2D/2D TiO_(2)(B)-BiOBr Heterojunction Mixed pollutants Photodegradation

来源：评论

学校读者我要写书评

暂无评论

Signal Fading Suppression in Ф-OTDR Based on EMD-GAN

引用

Zhongguo Jiguang/Chinese Journal of Lasers 2025年第6期52卷

作者： Liu, Xin Liu, Zhihua Zhou, Xiaoxu Wang, Yu Bai, Qing Jin, Baoquan College of Electronic Information and Optical Engineering Taiyuan University of Technology Shanxi Taiyuan030024 China Shanxi Transportation Technology Research & Development Co. Ltd. Shanxi Taiyuan030600 China Shanxi Intelligent Transportation Laboratory Co. Ltd. Shanxi Taiyuan030036 China Key Laboratory of Advanced Transducers and Intelligent Control Systems Ministry of Education Taiyuan University of Technology Shanxi Taiyuan030024 China

Objective In phase-sensitive optical time-domain reflectometers (Ф‑OTDRs), coherent and polarization fading caused by inherent destructive interference and polarization mismatch, affect phase restoration performance. Traditional signal fading suppression methods typically require additional hardware structures, which increases system complexity and cost. Moreover, vibration signals are non- stationary with complex frequency components, which further increases the fading suppression challenge. Therefore, it is of paramount significance to investigate a novel signal fading suppression method to achieve accurate phase reconstruction on the simplest structure in scientific research and engineering applications. Methods In this study, the random signal fading process in Ф- OTDR is analyzed, and it is confirmed that the fading point phase is a random noise value that follows uniform distribution. Using the empirical mode decomposition (EMD) algorithm, phase noise including phase accumulation noise and laser frequency drift is filtered out and phase information modulated by external vibration is extracted. The extracted phase data are subsequently organized into a two-dimensional space-time map, which are input into a generative adversarial network (GAN) to realize the repair of the fading data. The GAN training dataset, which is generated using software simulation, contains a total of 12000 images including the phase spectra of sinusoidal, square, and triangular wave vibration signals, Gaussian pulse vibration signal, and random vibration signal. Results and Discussions Experiments are designed as follows. The total length of the sensing fiber is 10.12 km, which is connected by three sections of single-mode fibers of 4.17, 1.92, and 3.95 km in length, respectively. A piezoelectric ceramic (PZT) is connected between each section of fiber and driven by the signal generator to produce the required vibration signal. Phase demodulation is performed at two vibration positions (

关键词： Single mode fibers

来源：评论

学校读者我要写书评

暂无评论

A meta-modeling procedure for updating the finite element model of an arch bridge model

引用

key engineering Materials 2013年第1期540卷 79-86页

作者： Wang, Dejun Liu, Yang School of Transportation Science and Engineering Harbin Institute of Technology Harbin China Key Laboratory of Advanced Material Intelligent Control Technology on Transportation safety Ministry of Communication China

Finite element (FE) model updating of structures using vibration test data has received considerable attentions in recent years due to its crucial role in fields ranging from establishing a reality-consistent structural model for dynamic analysis and control, to providing baseline model for damage identification in structural health monitoring. Model updating is to correct the analytical finite element model using test data to produce a refined one that better predict the dynamic behavior of structure. However, for real complex structures, conventional updating methods is difficult to be utilized to update the FE model of structures due to the heavy computational burden for the dynamic analysis. Meta-model is an effective surrogate model for dynamic analysis of large-scale structures. An updating method based on the combination between meta-model and component mode synthesis (CMS) is proposed to improve the efficiency of model updating of large-scale structures. The effectiveness of the proposed method is then validated by updating a scaled suspender arch bridge model using the simulated data. Copyright © 2013 Trans Tech Publications Ltd, Switzerland.

关键词： Arch bridges

来源：评论

学校读者我要写书评

暂无评论

Investigation of a software for finite element model updating of bridges based on interface technology between VC++ and MATLAB

引用

key engineering Materials 2013年第1期540卷 1-10页

作者： Liu, Yang Lv, Zhan Zhang, Hong School of Transportation Science and Engineering Harbin Institute of Technology Harbin China Key Laboratory of Advanced Material Intelligent Control Technology on Transportation safety Ministry of Communication China

To develop an effective software for finite element (FE) model updating of bridges, the interface technology between VC++ and MATLAB was investigated firstly, and then a software for updating FE model of bridges, named 'Doctor for Bridges' (version 1.0) was developed. Finally, a model ofconcrete-filled steel tube arch bridge was applied to verify the performance and effectiveness of the proposed software. Copyright © 2013 Trans Tech Publications Ltd, Switzerland.

关键词： MATLAB

来源：评论

学校读者我要写书评

暂无评论

A facile preparation of hausmannite as a high-performance catalyst for toluene combustion

引用

Chinese Journal of Chemical engineering 2022年第4期35卷 392-401页

作者： Qi Liu Gao Cheng Ming Sun Weixiong Yu Xiaohong Zeng Shichang Tang Yongfeng li Lin Yu School of Chemical Engineering and Light Industry Key Laboratory of Clean Chemistry Technology of Guangdong Regular Higher EducationGuangzhou Key Laboratory of Clean Transportation Energy ChemistryGuangdong University of TechnologyGuangzhou 510006China

Mesoporous transition metal oxide catalysts are well-used in the elimination of volatile organic *** this study,we developed an efficient method for the preparation of mesoporous-Mn_(3)O_(4)(mMn_(3)O_(4))without the use of templates or *** this method,KCl protects oxygen defects on the surface of fresh Mn_(3)O_(4) crystallites.m-Mn_(3)O_(4) shows higher ameliorative catalytic activity than bulk-Mn_(3)O_(4)(b-Mn_(3)O_(4)) and calcined-Mn_(3)O_(4)(c-Mn_(3)O_(4)),achieving toluene catalytic oxidation of T_(10) and T_(90)(the temperature at a conversion rate of about 10%and 90%)at 191℃and 230℃,respectively(WHSV=40,000 ml·g^(-1)·h^(-1)).Based on various characterizations,the prepared m-Mn_(3)O_(4)has large specific surface area and abundant oxygen defects,and thus can provide more surface active sites,which give it superior toluene combustion activity.

关键词： Catalysis Nanomaterials Environment Toluene Solvents Mn_(3)O_(4)

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：