期刊文献+
共找到601篇文章
< 1 2 31 >
每页显示 20 50 100
Autonomous Multi-Factor Energy Flows Controller (AmEFC): Enhancing Renewable Energy Management with Intelligent Control Systems Integration
1
作者 Dimitrios Vezeris Maria Polyzoi +2 位作者 Georgios Kotakis Pagona Kleitsiotou Eleni Tsotsopoulou 《Energy and Power Engineering》 2023年第11期399-442,共44页
The transition to sustainable energy systems is one of the defining challenges of our time, necessitating innovations in how we generate, distribute, and manage electrical power. Micro-grids, as localized energy hubs,... The transition to sustainable energy systems is one of the defining challenges of our time, necessitating innovations in how we generate, distribute, and manage electrical power. Micro-grids, as localized energy hubs, have emerged as a promising solution to integrate renewable energy sources, ensure energy security, and improve system resilience. The Autonomous multi-factor Energy Flow Controller (AmEFC) introduced in this paper addresses this need by offering a scalable, adaptable, and resilient framework for energy management within an on-grid micro-grid context. The urgency for such a system is predicated on the increasing volatility and unpredictability in energy landscapes, including fluctuating renewable outputs and changing load demands. To tackle these challenges, the AmEFC prototype incorporates a novel hierarchical control structure that leverages Renewable Energy Sources (RES), such as photovoltaic systems, wind turbines, and hydro pumps, alongside a sophisticated Battery Management System (BMS). Its prime objective is to maintain an uninterrupted power supply to critical loads, efficiently balance energy surplus through hydraulic storage, and ensure robust interaction with the main grid. A comprehensive Simulink model is developed to validate the functionality of the AmEFC, simulating real-world conditions and dynamic interactions among the components. The model assesses the system’s reliability in consistently powering critical loads and its efficacy in managing surplus energy. The inclusion of advanced predictive algorithms enables the AmEFC to anticipate energy production and consumption trends, integrating weather forecasting and inter-controller communication to optimize energy flow within and across micro-grids. This study’s significance lies in its potential to facilitate the seamless incorporation of RES into existing power systems, thus propelling the energy sector towards a more sustainable, autonomous, and resilient future. The results underscore the potential of such a system to revolutionize energy management practices and highlight the importance of smart controller systems in the era of smart grids. 展开更多
关键词 MICRO-GRID Smart Grid Interconnection Hybrid Renewable System Energy Flow Controller Battery management Hydro Pump Off-Grid Solutions Ioniki autonomous
下载PDF
A Trailblazing Framework of Security Assessment for Traffic Data Management
2
作者 Abdulaziz Attaallah Khalil al-Sulbi +5 位作者 Areej Alasiry Mehrez Marzougui Neha Yadav Syed Anas Ansar Pawan Kumar Chaurasia Alka Agrawal 《Intelligent Automation & Soft Computing》 SCIE 2023年第8期1853-1875,共23页
Connected and autonomous vehicles are seeing their dawn at this moment.They provide numerous benefits to vehicle owners,manufacturers,vehicle service providers,insurance companies,etc.These vehicles generate a large a... Connected and autonomous vehicles are seeing their dawn at this moment.They provide numerous benefits to vehicle owners,manufacturers,vehicle service providers,insurance companies,etc.These vehicles generate a large amount of data,which makes privacy and security a major challenge to their success.The complicated machine-led mechanics of connected and autonomous vehicles increase the risks of privacy invasion and cyber security violations for their users by making them more susceptible to data exploitation and vulnerable to cyber-attacks than any of their predecessors.This could have a negative impact on how well-liked CAVs are with the general public,give them a poor name at this early stage of their development,put obstacles in the way of their adoption and expanded use,and complicate the economic models for their future operations.On the other hand,congestion is still a bottleneck for traffic management and planning.This research paper presents a blockchain-based framework that protects the privacy of vehicle owners and provides data security by storing vehicular data on the blockchain,which will be used further for congestion detection and mitigation.Numerous devices placed along the road are used to communicate with passing cars and collect their data.The collected data will be compiled periodically to find the average travel time of vehicles and traffic density on a particular road segment.Furthermore,this data will be stored in the memory pool,where other devices will also store their data.After a predetermined amount of time,the memory pool will be mined,and data will be uploaded to the blockchain in the form of blocks that will be used to store traffic statistics.The information is then used in two different ways.First,the blockchain’s final block will provide real-time traffic data,triggering an intelligent traffic signal system to reduce congestion.Secondly,the data stored on the blockchain will provide historical,statistical data that can facilitate the analysis of traffic conditions according to past behavior. 展开更多
关键词 Connected and autonomous vehicles(CAVs) traffic data management ethereum blockchain road side units smart cities
下载PDF
Towards Cloud Management by Autonomic Manager Collaboration 被引量:1
3
作者 Omid Mola Michael A. Bauer 《International Journal of Communications, Network and System Sciences》 2011年第12期790-802,共13页
The management of clouds comprised of hundreds of hosts and virtual machines present challenging problems to administrators in ensuring that performance agreements are met and that resources are efficiently utilized. ... The management of clouds comprised of hundreds of hosts and virtual machines present challenging problems to administrators in ensuring that performance agreements are met and that resources are efficiently utilized. Automated approaches can help in managing such environments. Autonomic managers using policy-based management can provide a useful approach to such automation. We outline how collections of collaborating autonomic managers in cloud can be a step towards better management of clouds. We describe how a hierarchy of policy-based autonomic managers can collaborate using messages. The messages and when to communicate is inferred automatically from the policies given to the managers. We evaluate the approach via a prototype inspired by a cloud virtualized infrastructure and show how collaboration between managers in a hierarchy can improve the response time of a web server and avoid service level agreement violations. Results of three different scenarios shows the importance of collaboration between managers at different authority levels and how this collaboration can help to increase efficiency of current infrastructures. 展开更多
关键词 autonomIC management COLLABORATION Policy-Based management CLOUD management
下载PDF
Dynamic Cell Modeling for Accurate SOC Estimation in Autonomous Electric Vehicles
4
作者 Qasim Ajao Lanre Sadeeq 《Journal of Power and Energy Engineering》 2023年第8期1-15,共15页
This paper presents findings on dynamic cell modeling for state-of-charge (SOC) estimation in an autonomous electric vehicle (AEV). The studied cells are Lithium-Ion Polymer-based with a nominal capacity of around 8 A... This paper presents findings on dynamic cell modeling for state-of-charge (SOC) estimation in an autonomous electric vehicle (AEV). The studied cells are Lithium-Ion Polymer-based with a nominal capacity of around 8 Ah, optimized for power-needy applications. The AEV operates in a harsh environment with rate requirements up to ±25C and highly dynamic rate profiles, unlike portable-electronic applications with constant power output and fractional C rates. SOC estimation methods effective in portable electronics may not suffice for the AEV. Accurate SOC estimation necessitates a precise cell model. The proposed SOC estimation method utilizes a detailed Kalman-filtering approach. The cell model must include SOC as a state in the model state vector. Multiple cell models are presented, starting with a simple one employing “Coulomb counting” as the state equation and Shepherd’s rule as the output equation, lacking prediction of cell relaxation dynamics. An improved model incorporates filter states to account for relaxation and other dynamics in closed-circuit cell voltage, yielding better performance. The best overall results are achieved with a method combining nonlinear autoregressive filtering and dynamic radial basis function networks. The paper includes lab test results comparing physical cells with model predictions. The most accurate models obtained have an RMS estimation error lower than the quantization noise floor expected in the battery-management-system design. Importantly, these models enable precise SOC estimation, allowing the vehicle controller to utilize the battery pack’s full operating range without overcharging or undercharging concerns. 展开更多
关键词 autonomous Electric Vehicle Modeling Battery Model Battery management Systems (BMS) Lithium Polymer State of Charge Kalman-Filter
下载PDF
Autonomic QoS Management Mechanism in Software Defined Network 被引量:3
5
作者 WANG Wendong QI Qinglei GONG Xiangyan HU Yannan QUE Xirong 《China Communications》 SCIE CSCD 2014年第7期13-23,共11页
With the increase of network complexity,the flexibility of network control and management becomes a nontrivial problem.Both Software Defined Network(SDN) and Autonomic Network technologies are sophisticated technologi... With the increase of network complexity,the flexibility of network control and management becomes a nontrivial problem.Both Software Defined Network(SDN) and Autonomic Network technologies are sophisticated technologies for the network control and management.These two technologies could be combined together to construct a software defined self-managing solution for the future network.An autonomic QoS management mechanism in Software Defined Network(AQSDN) is proposed in this paper.In AQSDN,the various QoS features can be configured autonomically in an OpenFlow switch through extending the OpenFlow and OF-Config protocols.Based on AQSDN,a novel packet context-aware QoS model(PCaQoS) is also introduced for improving the network QoS.PCaQoS takes packet context into account when packet is marked and managed into forwarding queues.The implementation of a video application's prototype which evaluates the self-configuration feature of the AQSDN and the enhancement ability of the PCaQoS is presented in order to validate this design. 展开更多
关键词 网络控制 管理机制 软件定义 QOS 神经网络技术 网络服务质量 视频应用程序 数据包标记
下载PDF
An autonomic joint radio resource management algorithm in end-to-end reconfigurable system 被引量:1
6
作者 林粤伟 《High Technology Letters》 EI CAS 2008年第3期238-244,共7页
This paper presents the multi-step Q-learning(MQL)algorithm as an autonomic approach to thejoint radio resource management(JRRM)among heterogeneous radio access technologies(RATs)in theB3G environment.Through the'... This paper presents the multi-step Q-learning(MQL)algorithm as an autonomic approach to thejoint radio resource management(JRRM)among heterogeneous radio access technologies(RATs)in theB3G environment.Through the'trial-and-error'on-line learning process,the JRRM controller can con-verge to the optimized admission control policy.The JRRM controller learns to give the best allocation foreach session in terms of both the access RAT and the service bandwidth.Simulation results show that theproposed algorithm realizes the autonomy of JRRM and achieves well trade-off between the spectrum utilityand the blocking probability comparing to the load-balancing algorithm and the utility-maximizing algo-rithm.Besides,the proposed algorithm has better online performances and convergence speed than theone-step Q-learning(QL)algorithm.Therefore,the user statisfaction degree could be improved also. 展开更多
关键词 无线通信系统 联合无线资源管理 强化学习 异质网络
下载PDF
Planning and Decision-making for Connected Autonomous Vehicles at Road Intersections:A Review 被引量:6
7
作者 Shen Li Keqi Shu +1 位作者 Chaoyi Chen Dongpu Cao 《Chinese Journal of Mechanical Engineering》 SCIE EI CAS CSCD 2021年第5期26-43,共18页
Planning and decision-making technology at intersections is a comprehensive research problem in intelligent transportation systems due to the uncertainties caused by a variety of traffic participants.As wireless commu... Planning and decision-making technology at intersections is a comprehensive research problem in intelligent transportation systems due to the uncertainties caused by a variety of traffic participants.As wireless communication advances,vehicle infrastructure integrated algorithms designed for intersection planning and decision-making have received increasing attention.In this paper,the recent studies on the planning and decision-making technologies at intersections are primarily overviewed.The general planning and decision-making approaches are presented,which include graph-based approach,prediction base approach,optimization-based approach and machine learning based approach.Since connected autonomous vehicles(CAVs)is the future direction for the automated driving area,we summarized the evolving planning and decision-making methods based on vehicle infrastructure cooperative technologies.Both four-way signalized and unsignalized intersection(s)are investigated under purely automated driving traffic and mixed traffic.The study benefit from current strategies,protocols,and simulation tools to help researchers identify the presented approaches’challenges and determine the research gaps,and several remaining possible research problems that need to be solved in the future. 展开更多
关键词 PLANNING DECISION-MAKING autonomous intersection management Connected autonomous vehicles
下载PDF
A hydrothermal investigation system for the Qianlong-Ⅱ autonomous underwater vehicle 被引量:2
8
作者 Tao Wu Chunhui Tao +4 位作者 Jinhui Zhang Ao Wang Guoyin Zhang Jianping Zhou Xianming Deng 《Acta Oceanologica Sinica》 SCIE CAS CSCD 2019年第3期159-165,共7页
Qianlong-Ⅱ is a fully autonomous underwater vehicle designed for the investigation of submarine resources,particularly polymetallic sulfides. It was used to successfully explore hydrothermal fields on the Southwest I... Qianlong-Ⅱ is a fully autonomous underwater vehicle designed for the investigation of submarine resources,particularly polymetallic sulfides. It was used to successfully explore hydrothermal fields on the Southwest Indian Ridge. Here, we summarized the exploration of hydrothermal systems using Qianlong-Ⅱ, including detailed descriptions of its implementation along with the systems used for data management and fast mapping. We also introduced a method to remove platform magnetic interference using magnetic data while Qianlong-Ⅱ is spinning. Based on hydrothermal anomalies collected by Qianlong-Ⅱ, we developed a rapid method for locating hydrothermal vents. Taking one dive as an example, we systemically demonstrated the process for analyzing hydrothermal survey data to locate hydrothermal vents. 展开更多
关键词 Qianlong-Ⅱ autonomous UNDERWATER vehicle data management HYDROTHERMAL investigation
下载PDF
MicroGrid Designer:user-friendly design,operation and control assist tools for resilient microgrid and autonomous community 被引量:1
9
作者 Ryuichi Yokoyama Yicheng Zhou 《Global Energy Interconnection》 EI CAS CSCD 2022年第3期249-258,共10页
During this decade,many countries have experienced natural and accidental disasters,such as typhoons,floods,earthquakes,and nuclear plant accidents,causing catastrophic damage to infrastructures.Since the end of 2019,... During this decade,many countries have experienced natural and accidental disasters,such as typhoons,floods,earthquakes,and nuclear plant accidents,causing catastrophic damage to infrastructures.Since the end of 2019,all countries of the world are struggling with the COVID-19 and pursuing countermeasures,including inoculation of vaccine,and changes in our lifestyle and social structures.All these experiences have made the residents in the affected regions keenly aware of the need for new infrastructures that are resilient and autonomous,so that vital lifelines are secured during calamities.A paradigm shift has been taking place toward reorganizing the energy social service management in many countries,including Japan,by effective use of sustainable energy and new supply schemes.However,such new power sources and supply schemes would affect the power grid through intermittency of power output and the deterioration of power quality and service.Therefore,new social infrastructures and novel management systems to supply energy and social service will be required.In this paper,user-friendly design,operation and control assist tools for resilient microgrids and autonomous communities are proposed and applied to the standard microgrid to verify its effectiveness and performance. 展开更多
关键词 MICROGRID autonomous community Grid design and analysis RESILIENCE Unit commitment Economic load dispatch Load frequency control Dynamic power flow Energy management system
下载PDF
Dual Layered Architecture for Multi Agent Based Islanding and Load Management for Microgrids
10
作者 Al Kulasekara Ktmu Hemapala Rarc Gopura 《Journal of Power and Energy Engineering》 2015年第5期29-42,共14页
This paper proposes a novel dual layered multi agent system (MAS) based control system for the use in microgrid operations. In developing a smarter grid capable of withstanding disturbances and/or outages and providin... This paper proposes a novel dual layered multi agent system (MAS) based control system for the use in microgrid operations. In developing a smarter grid capable of withstanding disturbances and/or outages and providing quality service to the consumers, reliable microgrid control architecture is vital. The innovative microgrid control system proposed, makes the microgrid capable of isolating the local grid from effects of any upstream disturbances in the main utility grid by operating disconnected from the main utility via islanding, and it allows the most critical local loads to be supplied by any, available, local power source during such islanded operation. The proposed MAS control architecture is developed using the JADE platform and it is used to control a test network simulated in MATLAB. The results of these simulations show the capability of developing MAS based reliable control mechanism for islanding and load management of microgrids based on the proposed concept. 展开更多
关键词 autonomous AGENTS LOAD management MICROGRIDS MULTI-AGENT Systems
下载PDF
Autonomous Vehicle Design in Lean Product Development Processes for Value Stream Map
11
作者 Fuat Ali Paker 《Journal of Transportation Technologies》 2022年第4期744-777,共34页
The global automotive industry is giving a difficult and common test in order to create advanced life models in the near future plans or scenarios that include current autonomous vehicle technologies. Therefore, the m... The global automotive industry is giving a difficult and common test in order to create advanced life models in the near future plans or scenarios that include current autonomous vehicle technologies. Therefore, the main purpose of the research is to comparatively evaluate the impact of autonomous vehicle technologies, which are newly included in the automotive manufacturing industry under sustainable competition, on lean product development processes, value acquisition and preservation, in different organizational structures in the approach. Although mergers or brand acquisitions in the global automotive industry create joint R & D (Research Development) or joint new P & D (Product Development) process structures for the development of autonomous vehicle technologies, heavy competition continues in the market. These new processes create different needs for the merger and partnership of the renewed traffic infrastructures under national and international regulations, and for the implementation of the new autonomous life model. Firm and brand marriages, mergers or acquisitions in today’s automotive industry have ensured the high diffusion of lean product development processes under the stream of value creation or preservation carried out specific to the company under competition. Brand mergers in automotive industry companies struggling to survive under high competition create new work disciplines, professions, and engineering flow steps in lean product development processes. However, lean product development processes driven by technological innovation under simplification have resulted in the integration of parts and systems within the autonomous vehicle design structure, as well as creating new interdisciplinary value streams or different stakeholders. Therefore, the research revealed the significant effects of lean product development processes on the value stream in the automotive industry, on the mixed and lean product development process structure formed by new or existing vehicle systems (conventional vehicle) under the penetration of each existing and new discipline. This research compares the efficient operation steps of the process stakeholders in the autonomous vehicle design parts or systems containing innovation and new technology together with the value stream in the lean product development process, and the new process stakeholder’s business-oriented global and local automotive industry companies. New autonomous vehicle technologies, together with their unique software, hardware and development analysis, have been involved in the lean product development process with their interdisciplinary studies or expertise. Therefore, the study firstly focused on the technologies in environmental use together with the new basic features of autonomous vehicles, and then examined in depth the new or existing disciplines and interdisciplinary basic structure that these innovations affect under the value stream in the lean product development process. In addition, micro-level results and recommendations were shared, shedding light on how autonomous vehicle levels will create changes in the new product development process. 展开更多
关键词 Automotive Industry Lean Product Development Design management autonomous Vehicle Design Value Stream Map
下载PDF
Shaping the Next Generation Pharmaceutical Supply Chain Control Tower with Autonomous Intelligence
12
作者 Matthew Liotine 《Journal of Autonomous Intelligence》 2019年第1期56-71,共16页
This paper summarizes the findings of an industry panel study evaluating how new Autonomous Intelligence technologies,such as artificial intelligence and machine learning,impact the system and operational architecture... This paper summarizes the findings of an industry panel study evaluating how new Autonomous Intelligence technologies,such as artificial intelligence and machine learning,impact the system and operational architecture of supply chain control tower (CT) implementations that serve the pharmaceutical industry.Such technologies can shift CTs to a model in which real-time information gathering,analysis,and decision making are possible.This can be achieved by leveraging these technologies to better manage decision complexity and execute decisions at levels that cannot otherwise be managed easily by humans.Some of the key points identified are in the areas of the fundamental capabilities that need to be supported and the improved level of decision visibility that they provide.We also consider some the challenges in achieving this,which include data quality and integrity,collaboration and data sharing across supply chain tiers,cross-system interoperability,decision-validation and organizational impacts,among others. 展开更多
关键词 Supply CHAIN management Control TOWER autonomous INTELLIGENCE
下载PDF
太阳系边际探测器自主技术需求分析
13
作者 徐瑞 李世震 +4 位作者 李朝玉 田若冰 朱哲 陈建岳 王帅 《宇航学报》 EI CAS CSCD 北大核心 2024年第5期647-660,共14页
回顾了已有的太阳系边际探测任务及其自主运行技术的初步应用情况,归纳了太阳系边际探测任务的特点。结合发展和应用历程,分析了实现太阳系边际探测器自主运行所需的关键技术,并给出了各项技术的重点研究方向,包括不确定环境下的自主任... 回顾了已有的太阳系边际探测任务及其自主运行技术的初步应用情况,归纳了太阳系边际探测任务的特点。结合发展和应用历程,分析了实现太阳系边际探测器自主运行所需的关键技术,并给出了各项技术的重点研究方向,包括不确定环境下的自主任务规划技术、超长周期高可靠性自主健康管理技术、极远深空环境自主导航技术、核电源系统自主运行管理技术、极端热环境下的自主热控技术和超远距离下自主通信与休眠技术,能够为太阳系边际探测任务的关键技术研究和任务实施提供参考。 展开更多
关键词 太阳系边际 深空探测 探测器自主管理 自主规划 自主导航
下载PDF
推动自动驾驶运输服务应用的思考与对策
14
作者 周炜 李文亮 +2 位作者 李华建 高金 刘智超 《交通运输研究》 2024年第2期61-65,72,共6页
为推动自动驾驶汽车在道路运输市场实现商业化应用,引导自动驾驶运输服务健康有序发展,首先从道路运输行业管理的角度出发,分析制约自动驾驶汽车规模化应用的长尾问题,提出通过增加约束条件消除应用长尾的应对策略。然后,从车辆技术、... 为推动自动驾驶汽车在道路运输市场实现商业化应用,引导自动驾驶运输服务健康有序发展,首先从道路运输行业管理的角度出发,分析制约自动驾驶汽车规模化应用的长尾问题,提出通过增加约束条件消除应用长尾的应对策略。然后,从车辆技术、线路使用、从业人员、企业管理、行业监管等5个方面,提出与现阶段自动驾驶技术相匹配且符合现行法律法规要求的自动驾驶汽车从事道路运输服务经营活动的使用条件,以有效解决自动驾驶技术应用的长尾问题。最后,分析自动驾驶汽车运行区域开放程度、车辆在区域内的运行速度、载客和载货量等要素与自动驾驶汽车商业化应用风险的关系,确定高、中、低3个风险等级下各要素的指标参数,并基于不同运输业态的风险等级提出自动驾驶汽车应用预期,为自动驾驶汽车商业化应用提出可行对策。 展开更多
关键词 自动驾驶汽车 长尾问题 运输服务 运输安全 交通运输管理
下载PDF
吸纳性规制:农村集体资产经营中的基层政府行为模式
15
作者 李强 《华南农业大学学报(社会科学版)》 北大核心 2024年第4期13-25,共13页
在农村集体经济全面转向以集体土地和物业出租为主要形式的租赁型经济条件下,基层政府针对集体资产经营的行为模式需要更加深入的探讨。基于政府规制理论的演进脉络和场景变迁,提出“吸纳性规制”概念,用以分析基层政府主导集体资产经... 在农村集体经济全面转向以集体土地和物业出租为主要形式的租赁型经济条件下,基层政府针对集体资产经营的行为模式需要更加深入的探讨。基于政府规制理论的演进脉络和场景变迁,提出“吸纳性规制”概念,用以分析基层政府主导集体资产经营的政策实践。经验研究发现,基层政府一方面完善集体资产持有、交易、使用等环节的具体规则,持续推动行政监管扩容;另一方面通过基层组织支配和集体资产代管,完成对集体资产经营权的接收。二者构成了吸纳性规制的不同实践层次,展现了行政权力的边界延展与行政系统的职能扩充。在这一过程中,基层政府注重寻求“合法性策略”与“实质性目标”之间的平衡,将规范经济秩序、提高经济绩效作为获致集体资产经营主导权的重要基础。吸纳性规制具有促进集体经济规范运行、提高集体收益的积极功能,但是也可能带给基层政府更多应对复杂市场环境、介入集体产权纠纷的压力。 展开更多
关键词 集体资产经营 吸纳性规制 基层政府 组织支配 资产代管
下载PDF
基于直流母线电压信号的小型独立直流微电网自主平滑模式切换控制策略
16
作者 翟凡 李桂丹 +2 位作者 王议锋 陈博 王忠杰 《电工技术学报》 EI CSCD 北大核心 2024年第10期3105-3117,共13页
在独立直流微电网中,储能系统(ESSs)和光伏(PV)是主要能源。在极端条件下,储能和光伏变换器需要进行工作模式切换以协调功率,为了优化切换性能,该文提出一种基于直流总线信号(DBS)的自主平滑模式切换控制策略,用于多个光伏电源和ESS的... 在独立直流微电网中,储能系统(ESSs)和光伏(PV)是主要能源。在极端条件下,储能和光伏变换器需要进行工作模式切换以协调功率,为了优化切换性能,该文提出一种基于直流总线信号(DBS)的自主平滑模式切换控制策略,用于多个光伏电源和ESS的无通信协同工作,提高了系统的可靠性。针对多模式切换过程中的抖振和死锁问题,所提出的控制策略利用具有反馈抑制机制的PI控制器实现了在饱和与激活之间无缝切换。同时,为了进一步提升光伏能量的利用率,所提出的控制策略充分考虑了ESS的荷电状态(SOC),并使光伏电源能够直接参与直流母线电压的调节。此外,还对模式切换时间与控制器参数的设计进行了详细的分析建模,以优化模式切换性能。最后,建立了一个小型独立直流微电网实验系统,以验证所提出的直流微电网控制方法的可行性。 展开更多
关键词 自主控制方案 直流微电网 储能系统(ESS) 光伏(PV)电力系统 电力管理
下载PDF
内生智能驱动的6G边缘网络双闭环自愈架构设计
17
作者 谭灿 方宏林 +2 位作者 喻鹏 李文璟 邱雪松 《移动通信》 2024年第7期21-27,共7页
智能技术不断涌现,驱动着通信产业持续升级,向自智的更高阶段演进。内生智能是实现自智网络的关键因素。在未来网络管控体系中,如何编排管理智能能力,实现网络故障管理全流程智能化与自动化成为一个重要问题。为此,设计了一种贯穿故障... 智能技术不断涌现,驱动着通信产业持续升级,向自智的更高阶段演进。内生智能是实现自智网络的关键因素。在未来网络管控体系中,如何编排管理智能能力,实现网络故障管理全流程智能化与自动化成为一个重要问题。为此,设计了一种贯穿故障全生命周期的内生智能驱动的6G边缘网络双闭环自愈架构,提出自愈目标和方案的概念,建立了QoS保障的自愈目标损失最小化模型,以及对应的网络决策机制,从而支持从无线接入网到核心网的跨域管理能力。在可编程边缘网络环境中进行了验证实验,结果显示,自愈闭环控制流程正常运行,所提算法在毫秒级时延内解决了链路拥塞故障,保证了自愈目标的实现并满足QoS指标。 展开更多
关键词 边缘网络 内生智能 自智网络 网络管控 网络故障管理
下载PDF
果园智能化作业装备自主导航技术研究进展
18
作者 窦汉杰 陈震宇 +5 位作者 翟长远 邹伟 宋健 冯凡 张焱龙 王秀 《农业机械学报》 EI CAS CSCD 北大核心 2024年第4期1-22,共22页
果园生产管理主要包括喷药、施肥、割草、修剪、授粉、疏花和采收分级等作业环节,需要大量的人力投入,随着我国人口老龄化程度加剧,亟需果园生产管理由机械化向智能化转型升级。自主导航技术是果园机械化装备实现智能化的关键技术。本... 果园生产管理主要包括喷药、施肥、割草、修剪、授粉、疏花和采收分级等作业环节,需要大量的人力投入,随着我国人口老龄化程度加剧,亟需果园生产管理由机械化向智能化转型升级。自主导航技术是果园机械化装备实现智能化的关键技术。本文围绕果园智能化作业装备导航控制需求,结合国内外研究现状,分别阐述了包含导航定位信息和障碍物信息的果园作业场景感知技术,导航地图构建、导航路径提取和路径规划技术,行走底盘运动学模型构建、运动控制技术,多机协同控制、远程交互控制技术等。随着智慧农业发展,智慧果园已成为果园未来发展方向,果园智能化作业装备是智慧果园建设必不可少的关键环节,在此基础上,归纳了我国果园智能化作业装备自主导航技术发展面临的问题为:环境感知能力不足、路径提取不稳定、局部路径规划不灵活、导航系统环境适应性欠缺、多机协同和远程控制不成熟等,提出了多传感器融合的环境感知与路径提取、完整路径规划、强通用性果园导航、大型果园多作业环节的多机协同与远程操作等未来发展方向。 展开更多
关键词 果园 生产管理 作业装备 自主导航 智慧果园
下载PDF
基于分层回归的本科护生时间管理倾向与自主学习能力关系研究
19
作者 魏云 张静 +2 位作者 李洁 郑继盛 赵晓敏 《中国高等医学教育》 2024年第1期46-48,共3页
目的:了解本科护生时间管理倾向和自主学习能力现状及关系,为教育方案的制定提供理论依据。方法:选取某医学院411名本科护生为研究对象,采用一般资料问卷、时间管理倾向量表和自主学习能力量表进行在线调查。结果:本科护生时间管理倾向... 目的:了解本科护生时间管理倾向和自主学习能力现状及关系,为教育方案的制定提供理论依据。方法:选取某医学院411名本科护生为研究对象,采用一般资料问卷、时间管理倾向量表和自主学习能力量表进行在线调查。结果:本科护生时间管理倾向总分为(157.11±16.99)分,自主学习能力总分为(89.26±9.21)分;分层回归分析显示,时间管理倾向可以解释护生自主学习能力变异的28.1%(ΔF=80.582,P<0.001)。结论:本科护生的时间管理倾向和自主学习能力居中等水平,护理教育者可重点通过提升护生的时间监控观,加强师生交流频率,来提高其自主学习能力。 展开更多
关键词 护理本科生 自主学习能力 时间管理倾向 多层回归
下载PDF
构建中国特色信息资源管理学科自主知识体系面临的机遇及实践逻辑
20
作者 侯鹏娟 陈兰杰 李伟 《西华大学学报(哲学社会科学版)》 2024年第1期101-110,共10页
信息资源管理学科更名完成后,需要解析构建中国特色信息资源管理学科自主知识体系面临何种机遇,要思考哪些问题,其实践逻辑是什么样的。文章使用文献分析法和历史分析法,分析构建中国特色信息资源管理学科自主知识体系面临的三大机遇和... 信息资源管理学科更名完成后,需要解析构建中国特色信息资源管理学科自主知识体系面临何种机遇,要思考哪些问题,其实践逻辑是什么样的。文章使用文献分析法和历史分析法,分析构建中国特色信息资源管理学科自主知识体系面临的三大机遇和实践逻辑。构建中国特色信息资源管理学科自主知识体系面临提升扎根度、融合度和贡献度的三重机遇,需要重点思考其逻辑起点、定位框架、思维与表达逻辑、构建方法等问题。其实践逻辑是:根植于中华优秀传统文化,充分彰显文化自信;钩沉于中国信息资源管理实践,凝练学科内核;借鉴吸纳人类知识,在求变与应变中促进学科本土化创新;观照中国大地,服务社会需求和国家战略。 展开更多
关键词 中国特色信息资源管理学科 自主知识体系 学科建设 信息资源管理
下载PDF
上一页 1 2 31 下一页 到第
使用帮助 返回顶部