检索结果-南通市图书馆

A Survey on an Emerging Safety Challenge for Autonomous Vehicles:Safety of the Intended Functionality

第三届国际仪器科学技术学术研讨会

作者： LIU Guo-fu ZHANG Qi WANG Yue-ke ZHOU Ting-ting sun hong-liang department of mechatronics and instrumentation National University of Defense Technology Changsha 410073 China

The precondition of realizing slip ratio based Anti-lock Braking System (ABS) is the accurate measurement of vehicle velocity, which can be vital in simplifying the control laws of ABS. This paper des

关键词： Anti-lock Braking System Vehicle Velocity Kalman Filter Median Filter

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Engineering 2024年第2期33卷 17-34页

作者： hong Wang Wenbo Shao Chen sun Kai Yang Dongpu Cao Jun Li Tsinghua Intelligent Vehicle Design and Safety Research Institute School of Vehicle and MobilityTsinghua UniversityBeijing 100084China CogDrive Lab Department of Mechanical and Mechatronics EngineeringUniversity of WaterlooWaterlooON N2L3G1Canada College of Mechanical and Vehicle Engineering Chongqing UniversityChongqing 400044China

As the complexity of autonomous vehicles(AVs)continues to increase and artificial intelligence algorithms are becoming increasingly ubiquitous,a novel safety concern known as the safety of the intended functionality(SOTIF)has emerged,presenting significant challenges to the widespread deployment of *** focuses on issues arising from the functional insufficiencies of the AVs’intended functionality or its implementation,apart from conventional safety *** the systems engineering standpoint,this study offers a comprehensive exploration of the SOTIF landscape by reviewing academic research,practical activities,challenges,and perspectives across the development,verification,validation,and operation *** research encompasses system-level SOTIF studies and algorithm-related SOTIF issues and ***,it encapsulates practical SOTIF activities undertaken by corporations,government entities,and academic institutions spanning international and Chinese contexts,focusing on the overarching methodologies and practices in different ***,the paper presents future challenges and outlook pertaining to the development,verification,validation,and operation phases,motivating stakeholders to address the remaining obstacles and challenges.

关键词： Safety of the intended functionality Autonomous vehicles Artificial intelligence Uncertainty Verification Validation

GaN基异质结霍尔传感器封装测试与输出特性

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

电子学报 2024年第8期52卷 2737-2745页

作者：马凯鸣代建勋张卉丁喃喃孙楠孙仲豪刘艳红 Yung C liang 黄火林大连理工大学光电工程与仪器科学学院辽宁大连116024 大连理工大学物理学院辽宁大连116024 新加坡国立大学电气与计算机工程系新加坡119260

霍尔传感器作为磁传感领域最常用的传感器类型,在工业生产、汽车电子、航空航天以及生物医学等方面均有广泛应用.本文利用宽禁带氮化镓(GaN)半导体耐高温、高迁移率等优点,采用标准半导体芯片制造工艺研制出AlGaN/GaN异质结结构霍尔传感... 详细信息

霍尔传感器作为磁传感领域最常用的传感器类型,在工业生产、汽车电子、航空航天以及生物医学等方面均有广泛应用.本文利用宽禁带氮化镓(GaN)半导体耐高温、高迁移率等优点,采用标准半导体芯片制造工艺研制出AlGaN/GaN异质结结构霍尔传感器.高温应用环境下的传感器要求封装材料耐高温、产生应力低以及对传感器关键指标影响小.本文通过软件仿真树脂橡胶类3种不同封装材料封装后对传感器及键合线的性能影响规律,并通过实验验证不同材料封装前后传感器灵敏度、失调电压、温漂系数等物理参量的变化,遴选出综合性能最优的、可在550 K高温环境下使用的封装材料.最终得到封装后的霍尔传感器失调电压在1.0 mA激励电流时小于115μV,信号线性度在0~3.0 mA激励电流和0~1.0 T磁场测量范围内优于0.3%,而温漂系数在300~550 K温度范围内仅有-120.9 ppm/K,优于目前文献报道结果,因此有望应用于极端环境磁场检测中.

关键词： AlGaN/GaN异质结霍尔传感器封装金丝键合高温稳定性

Parallel Driving with Big Models and Foundation Intelligence in Cyber-hysical-ocial Spaces

同方期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Research 2024年第2期2024卷 1-17页

作者： Xiao Wang Jun Huang Yonglin Tian Chen sun Lie Yang Shanhe Lou Chen Lv Changyin sun Fei-Yue Wang School of Artificial Intelligence Anhui UniversityHefeiChina Macao University of Science and Technology MacaoChina State Key Laboratory for Management and Control of Complex Systems Institute of AutomationChinese Academy of SciencesBeijingChina MVSLab Department of Mechanical and Mechatronics EngineeringUniversity of Waterloo200 University Ave WestWaterlooON N2L3G1Canada School of Mechanical and Aerospace Engineering Nanyang Technological UniversitySingaporeSingapore

Recent years have witnessed numerous technical breakthroughs in connected and autonomous vehicles (CAVs). On the one hand, these breakthroughs have significantly advanced the development of intelligent transportation systems (ITSs);on the other hand, these new traffic participants introduce more complex and uncertain elements to ITSs from the social space. Digital twins (DTs) provide real-time, data-driven, precise modeling for constructing the digital mapping of physical-world ITSs. Meanwhile, the metaverse integrates emerging technologies such as virtual reality/mixed reality, artificial intelligence, and DTs to model and explore how to realize improved sustainability, increased efficiency, and enhanced safety. More recently, as a leading effort toward general artificial intelligence, the concept of foundation model was proposed and has achieved significant success, showing great potential to lay the cornerstone for diverse artificial intelligence applications across different domains. In this article, we explore the big models embodied foundation intelligence for parallel driving in cyber-physical-social spaces, which integrate metaverse and DTs to construct a parallel training space for CAVs, and present a comprehensive elucidation of the crucial characteristics and operational mechanisms. Beyond providing the infrastructure and foundation intelligence of big models for parallel driving, this article also discusses future trends and potential research directions, and the ?S?goals of parallel driving.

关键词： breakthrough integrate corners

Scalable synthesis of lipid nanoparticles for nucleic acid drug delivery using an isometric channel-size enlarging strategy

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano Research 2024年第4期17卷 2899-2907页

作者： Zesen Ma Haiyang Tong Sijin Lin Li Zhou Demeng sun Baoqing Li Changlin Tian Jiaru Chu department of Precision Machinery and Precision instrumentation University of Science and Technology of ChinaHefei 230027China Key Laboratory of Precision Scientific instrumentation of Anhui Higher Education Institutes University of Science and Technology of ChinaHefei 230027China Science Island Branch Graduate SchoolUniversity of Science and Technology of ChinaHefei 230026China Anhui Provincial Key Laboratory of High Field Magnetic Resonance Imaging High Magnetic Field LaboratoryHefei Institute of Physical ScienceChinese Academy of SciencesHefei 230031China Anhui Provincial Engineering Laboratory of Peptide Drugs University of Science and Technology of ChinaHefei 230027China School of Biomedical Engineering Division of Life Sciences and MedicineUniversity of Science and Technology of ChinaSuzhou 215127China

Lipid nanoparticles(LNPs)have emerged as highly effective delivery systems for nucleic acid-based ***,the broad clinical translation of LNP-based drugs is hampered by the lack of robust and scalable synthesis techniques that can consistently produce formulations from early development to clinical *** this work,we proposed a method to achieve scalable synthesis of LNPs by scaling inertial microfluidic mixers isometrically in three ***,a theoretical predictive method,which controls the mixing time to be equal across different chips,is developed to ensure consistent particle size and size distribution of the synthesized *** loaded with small interfering RNA(siRNA)were synthesized at different flow rates,exhibiting consistent physical properties,including particle size,size distribution and encapsulation *** work provides a practical approach for scalable synthesis of LNPs consistently,offering the potential to accelerate the transition of nucleic acid drug development into clinical application.

关键词： lipid nanoparticles nucleic acid delivery microfluidics scalable synthesis consistent particle size

Context-Aware Augmented Reality Using Human-Computer Interaction Models

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Control and Decision 2024年第1期11卷 1-14页

作者： Ying sun Qiongqiong Guo Shumei Zhao Karthik Chandran G.Fathima Henan intelligent education and intelligent technology application engineering technology research center Zhengzhou Railway Vocational and technical collegeZhengzhouHenanPeople’s Republic of China Henan Provincial Research Center of Wisdom Education and Intelligent Technology Application Engineering Technology Zhengzhou Railway Vocational and technical collegeZhengzhouHenanPeople’s Republic of China department of mechatronics Engineering Jyothi Engineering CollegeKeralaIndia CSE Adhiyamaan College of Engineering HosurTamilnaduIndia

Augmented Reality is a technique that allows users to overlap digital information with their physical *** Augmented Reality(AR)displays have an exceptional characteristic from the Human–Computer Interaction(HCI)*** to its increasing popularity and application in diverse domains,increasing user-friendliness and AR usage are ***-aware is one approach since an AR application can adapt to the user,environment,needs and enhance ergonomic principles and *** paper proposes the Intelligent Contextaware Augmented Reality Model(ICAARM)for Human–Computer Interaction *** study explores and reduces interaction uncertainty by semantically modeling user-specific interaction with context,allowing personalised *** information is captured from an AR device to understand user interactions and *** depictions carry semantics to Augmented Reality applications about the user’s intention to interact with a specific device ***,this study describes personalised gesture interaction in VR/AR applications for immersive/intelligent environments.

关键词： Augmented Reality Context-aware Human–Computer Interaction

Performance analysis of a photovoltaic/thermal system with lunar regolith-based thermal storage for the lunar base

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China(Technological Sciences) 2024年第4期67卷 1113-1123页

作者： sun WenGan ZHAO Bin PEI Yu SHI LingFeng HU MaoBin LI MuJun REN Xiao PEI Gang Deep Space Exploration Laboratory Hefei 230026China department of Thermal Science and Energy Engineering University of Science and Technology of ChinaHefei 230026China department of Mechanical and Aerospace Engineering University of California San DiegoLa JollaCA 92093USA department of Precision Machinery and Precision instrumentation University of Science and Technology of ChinaHefei 230026China College of New Energy China University of Petroleum(East China)Qingdao 266000China

Powering a moon base,especially keeping it warm during the long lunar night,is a big *** paper introduces a photovoltaic/thermal(PV/T)system incorporating regolith thermal storage to solve the challenge of power and heat provision for the lunar base *** vacuum of space around the moon helps this system by reducing heat *** the moon's daytime,the system not only generates electricity but also captures *** stored heat in the regolith is then used at night,reducing the amount of equipment we need to send from *** spectrally selective PV/T panels are designed to absorb a wide range of sunlight(0.3–2.5μm)while minimizing heat loss in the infrared range(3–30μm).Simulation results of the hybrid solar energy system indicate the average value of the overall efficiency is 45.9%,which relatively elevates 56.1%compared to the PV *** launch mass of the proposed PV/T system is only 8.4%of a traditional photovoltaic-lithium battery system with the same amount of energy *** the total specific energy of the proposed system is 7.3 kWh kg^(-1),while that of the photovoltaic-lithium battery system is about 0.3 kWh kg^(-1).In summary,this study proposes an alternative combined heat and electricity supply system for the lunar base,which can greatly reduce the launch mass and free up load for other scientific research equipment.

关键词： in-situ resource utilization(IRSU) regolith thermal storage photovoltaic/thermal(PV/T) spectral selectivity

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

基于三浦折纸电容式压力传感器的仿真与优化

传感器与微系统 2024年第10期43卷 120-123页

作者：孙鸿李木军中国科学技术大学精密机械与精密仪器系安徽合肥230026

柔性电容式压力传感器的灵敏度通常随压力的增加而衰减,这可能会影响其在具有环境压力情况下的应用。基于三浦折纸结构的柔性电容式压力传感器由于其特殊的折叠方式,可以同时改变电极之间的距离和正对面积来提高电容的相对变化率。本文... 详细信息

柔性电容式压力传感器的灵敏度通常随压力的增加而衰减,这可能会影响其在具有环境压力情况下的应用。基于三浦折纸结构的柔性电容式压力传感器由于其特殊的折叠方式,可以同时改变电极之间的距离和正对面积来提高电容的相对变化率。本文通过有限元仿真验证了三浦折纸电容式压力传感器的灵敏度随压力的增加而增大的变化规律。此外,仿真了不同初始二面角和厚度的三浦折纸传感器在不同压力下的电容变化情况,从结构上进行性能优化。

关键词：柔性电容压力传感器三浦折纸结构灵敏度有限元仿真

Comprehensive optimization of piezoelectric coefficient and depolarization temperature in Mn-doped Bi_(0.5)Na_(0.5)TiO_(3)-Bi_(0.5)K_(0.5)TiO_(3)-BaTiO_(3)lead-free piezoceramics

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 2024年第5期172卷 255-263页

作者： Huashan Zheng Enwei sun Huajie Luo Xiaoyu Zhang Yixiao Yang Bin Yang Rui Zhang Shantao Zhang Wenwu Cao Condensed Matter Science and Technology Institute School of Instrumentation Science and EngineeringHarbin Institute of TechnologyHarbin150080China Advanced Innovation Center for Materials Genome Engineering University of Science and Technology BeijingBeijing100083China National Laboratory of Solid State Microstructures Department of Materials Science and EngineeringCollege of Engineering and Applied Science&Collaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing210093China department of Mathematics and Materials Research Institute The Pennsylvania State UniversityUniversity ParkPennsylvania16802United States of America

Lead-free Bi_(_(0.5))Na_(_(0.5))TiO_(3)(BNT)piezoelectric ceramics have the advantages of large coercive fields and high Curie *** the improvement of piezoelectric coefficient(d 33)is usually accompanied by a huge sacrifice of depolarization temperature(T d).In this work,a well-balanced performance of d 33 and T d is achieved in MnO_(2)-doped 0.79(Bi_(_(0.5))Na_(_(0.5))TiO_(3))-0.14(Bi_(0.5)K_(0.5)TiO_(3))-0.07BaTiO_(3)ternary *** in-corporation of 0.25 mol%MnO_(2)enhances the d 33 by more than 40%,while T d remains almost unchanged(i.e.,d 33=181 pC/N,T d=184℃).X-ray diffraction(XRD)shows that an appropriate fraction of the small axis-ratio ferroelectric phase(pseudo-cubic,P c)coexists with the long-range ferroelectric phase(tetrag-onal,T)under this MnO_(2)*** force microscopy(PFM)has revealed a special domain configuration,namely large striped and layered macro domains embedded with small *** study provides a distinctive avenue to design BNT-based piezoelectric ceramics with high piezoelectric performance and temperature stability.

关键词： BNT-BKT-BT ceramics Mn doping Piezoelectric Depolarization temperature Phase structure