检索结果-内蒙古大学图书馆

第32届中国过程控制会议(CPCC2021)

作者： Zheren Zhu Yi Chai Zhihuan Song Xinmin Zhang IEEE State Key Laboratory of Industrial Control Technology College of Control Science and EngineeringZhejiang University State Key Laboratory of Power Transmission Equipment and System Security and New Technology and School of AutomationChongqing University

This paper mainly discusses the existence of barrier function which can guarantee a dynamic system synchronously safe and ***,scholars will use the terms "if there exists a barrier function" for most related *** this paper,we use a particular case to verify the existence of barrier function and whether it can realize stabilization with guaranteed safety,such as synchronously realizing safety and asymptotic stability,safety and uniform asymptotic stability,safety and exponential stability,and safety and finite-time *** think this paper can help to know the safety under the definitions of barrier functions and realize the safety-and-stability control.

关键词： Existence of barrier function synchronous safety and stability pre-compact forward invariant set and dynamic nonlinear system

来源：评论

学校读者我要写书评

暂无评论

Improve the Conversion Rate and Selectivity of Aromatic Monomers in Lignin Photocatalytic Conversion Reaction Via Phase Junction Cadmium Sulphide Nanoparticles and External Hydrogen Supplier

SSRN

引用

SSRN 2023年

作者： Yue, Zongyang Shao, Shibo Yu, Jialin Lu, Guanchu Wei, Wenjing Huang, Yi Zhang, Kai Wang, Ke Fan, Xianfeng Institute for Materials and Processes School of Engineering The University of Edinburgh EdinburghEH9 3BF United Kingdom Petrochemical Research Institute PetroChina Company Limited Beijing102206 China Beijing Key Laboratory of Ionic Liquids Clean Process CAS Key Laboratory of Green Process and Engineering State Key Laboratory of Multiphase Complex Systems Innovation Academy for Green Manufacture Institute of Process Engineering Chinese Academy of Sciences Beijing100190 China Longzihu New Energy Laboratory Zhengzhou Institute of Emerging Industrial Technology Henan University Zhengzhou450000 China Beijing Key Laboratory of Emission Surveillance and Control for Thermal Power Generation North China Electric Power University Beijing102206 China

Photocatalysis has the potential for lignin valorisation to generate functionalised aromatic monomers, but its large-scale application has been limited by the slow conversion rate and the low selectivity to desirable products. In this work, record-high lignin model compound Cβ-O bonds cleavage rate and excellent selectivity to aromatic monomers has been achieved over the development of new hexagonal-cubic phase junction CdS nanoparticles, enhanced external hydrogen donor supply and hydrogen transfer, and improved separation efficiency of photo-excited electron-hole pairs. Water is employed as external hydrogen supplier, resulting in significant increase in the conversion rate of 2-Phenoxy-1-phenylethanol (PP-ol) as lignin model from 21.8% to 100% and the selectivity of aromatic monomers from ~45% to ~94% under 1h of visible light irradiation. 2-phenoxyacetophenone (PP-one) as by-product from PP-ol conversion can be further completely cleaved to aromatic monomers with assistance of TEA and reaction time is reduced from 2-12 hrs to10 min under visible-light irradiation. © 2023, The Authors. All rights reserved.

关键词： Lignin

来源：评论

学校读者我要写书评

暂无评论

new Sensing Technologies for Monitoring Machinery,Structures,and Manufacturing processes

引用

Journal of Dynamics, Monitoring and Diagnostics 2023年第2期2卷 69-88页

作者： JDMD Editorial Office Zhaoyan Fan Robert X.Gao Qingbo He Yi Huang Tianxi Jiang Zhike Peng Luc Thévenaz Yuyong Xiong Shuncong Zhong Editorial Office of JDMD Chongqing University of TechnologyChongqingPeople’s Republic of China Department of Mechanical Industrialand Manufacturing EngineeringOregon State UniversityCorvallisORUSA Department of Mechanical and Aerospace Engineering Case Western Reserve UniversityClevelandOHUSA State Key Laboratory of Mechanical System and Vibration Shanghai Jiao Tong UniversityShanghaiPeople’s Republic of China Fujian Provincial Key Laboratory of Terahertz Functional Devices and Intelligent Sensing School of Mechanical Engineering and AutomationFuzhou UniversityFuzhouPeople’s Republic of China Institute of Precision Instrument and Intelligent Measurement&Control Fuzhou UniversityFuzhouPeople’s Republic of China School of Mechanical Engineering Ningxia UniversityYinchuanPeople’s Republic of China EPFL Ecole Polytechnique Fédérale de Lausanne Group for Fibre OpticsSCI-STI-LT Station 111015 LausanneSwitzerland

Sensing is the fundamental technique for sensor data acquisition in monitoring the operation condition of the machinery,structures,and manufacturing *** this paper,we briefly discuss the general idea and advances of various new sensing technologies,including multiphysics sensing,smart materials and metamaterials sensing,microwave sensing,fiber optic sensors,and terahertz sensing,for measuring vibration,deformation,strain,acoustics,temperature,spectroscopic,*** on the observations from the state of the art,we provide comprehensive discussions on the possible opportunities and challenges of these new sensing technologies so as to steer future development.

关键词： fiber optic sensor metamaterials sensing microwave sensing multiphysics sensing terahertz sensing

来源：评论

学校读者我要写书评

暂无评论

An Early Fault Detection Method of the Induced Draft Fan Based on Long-Short Term Memory Network and Double Warning Thresholds

An Early Fault Detection Method of the Induced Draft Fan Bas...

引用

Chinese control and Decision Conference, CCDC

作者： Wei Wei You Lv Yizhuo Liu Qing Li Shisen Xu Jun Li School of Control and Computer Engineering North China Electric Power University Beijing P. R. China Key Laboratory of Power Station Energy Transfer Conversion and System North China Electric Power University Beijing P. R. China Beijing Key Laboratory of New Technology and System on Measuring and Control for Industrial Process North China Electric Power University Beijing P. R. China Huaneng Technology Innovation Center Beijing P. R. China Xian Thermal Power Research Institute Company Limited Xian P. R. China

ISBN: (纸本)9781665478977

The induced draft (ID) fan is a significant piece of auxiliary equipment in thermal power plants. An early detection of possible faults in the ID fan may be used for effective predictive maintenance, thereby reducing the overall maintenance cost and improving the reliability and availability of thermal power plants. This paper proposed a genetic algorithm and long-short term memory network (GA-LSTM)-based condition monitoring approach using normal operation data of the ID fan. Furthermore, the LSTM network and the sliding window technique were introduced to construct double thresholds, which contains a dynamic threshold and a static threshold. The GA-LSTM-double thresholds method was applied to a coal-fired power plant to achieve early fault detection and diagnosis. The results demonstrates that the proposed method is capable of detecting minor anomalies in advance.

关键词： Fans Fault detection Neurons Predictive models Indexes Reliability State estimation

来源：评论

学校读者我要写书评

暂无评论

Nb-embedded Janus WSSe monolayer as a resistive or Schottky gas sensor upon CO, HCHO and C2H3Cl in dry transformers: a first-principles investigation

引用

Physics Letters, Section A: General, Atomic and Solid State Physics 2025年 553卷

作者： He, Dan Li, Guangming Cao, Wen Cui, Hao Key Laboratory of Testing Technology for Manufacturing Process Southwest University of Science and Technology Mianyang621010 China Intelligent Operation for New Energy Based Power System Qinghai University Xining810016 China School of Information and Control Engineering Southwest University of Science and Technology Mianyang621010 China College of Artificial Intelligence Southwest University Chongqing400715 China

The inevitable insulation defects in dry transformers lead to the decomposition of epoxy resin into CO, HCHO, and C₂H₃Cl. To assess the operational status of such electrical equipment, this study proposes a Nb-embedded Janus WSSe (Nb-WSSe) monolayer on basis of first-principles theory as an outstanding material for typical gas detection. It is found that Nb-WSSe monolayer shows chemisorption towards three gas molecules, with largely tuned electronic property. The charge density difference, band structure, density of states and work function of the gas adsorbed systems are well-analyzed, and the sensing mechanism of Nb-WSSe monolayer for exploration of the resistive and Schottky gas sensors are uncovered. The findings manifest the favorable sensitivity and selectively of Nb-WSSe monolayer for detection of three gas *** findings presented in this study hold significant value, as they possess the potential to catalyze Janus TMDCs-based novel gas sensing candidates for use within the realm of electrical engineering. © 2025 Elsevier B.V.

关键词： Gas detectors

来源：评论

学校读者我要写书评

暂无评论

Research on the corrosive effect of inactive sulfur on oil-paper insulation 7

Research on the corrosive effect of inactive sulfur on oil-p...

引用

7th IEEE International Conference on High Voltage Engineering and Application, ICHVE 2020

作者： Gao, Sihang Li, Jiajun Ke, Tingjing Liu, Yang Ding, Dong Key Laboratory of Industrial Internet of Things and Networked Control Ministry of Education Chongqing University of Posts and Telecommunications Chongqing China State Grid Chongqing Electric Power Company Chongqing Chongqing China Baoding Electric Power Corporation Baoding China State Key Lab. of Transmission Distribution Equipment and Power System Safety and New Technology Chongqing University Chongqing China

ISBN: (纸本)9781728155111

Sulfur corrosion induced by active sulfur has been proved to significantly decrease the insulation performance of oil-immersed equipment. In order to protect the oil-paper insulation from sulfur corrosion, active sulfur is cleared in the refining process of crude oil. Some inactive sulfur with high-efficiency antioxidant is still retained in the mineral oil to improve the oxidation stability of oil, such as thiophenic compounds. However, the corrosive effect of inactive sulfur on the oil-paper insulation has not yet clear. Therefore, thiophene that is the largest content of sulfide in the insulating oil was selected as the research object, a series of accelerated thermal ageing experiments of oil-paper without and with thiophene under the different high temperature were conducted, scanning electron microscope equipped with an energy-dispersive X-ray spectrometer (SEM/EDX) and inductively coupled plasma atomic emission spectrometry (ICP-AES) were used to characterize the corrosion degree of oil-paper insulation. The results show that no corrosive deposit was observed on the surface of oilpaper insulation without thiophene even at very high temperature, while a few corrosive deposit was accumulated on the surface of oil-paper insulation with 500 mg/kg thiophene. The corrosion degree of oil-paper insulation with thiophene had an uptrend as the increase of temperature (130°C-180°C), preliminarily indicating that thiophene may be activated in the oil-paper system under the action of overheating fault of oil-immersed transformer and posed a corrosion threat to oil-paper insulation. © 2020 IEEE.

关键词： Scanning electron microscopy

来源：评论

学校读者我要写书评

暂无评论

Implementing urban agriculture as nature-based solutions in China: Challenges and global lessons

Soil and Environmental Health

引用

Soil and Environmental Health 2024年第1期2卷

作者： Zhu, Zhe Chan, Faith Ka Shun Li, Gang Xu, Mengxia Feng, Meili Zhu, Yong-Guan Key Laboratory of Urban Environment and Health Institute of Urban Environment Chinese Academy of Sciences Xiamen 361021 China Department of Chemical and Environmental Engineering University of Nottingham Ningbo China Ningbo 315100 China Zhejiang Key Laboratory of Urban Environmental Processes and Pollution Control CAS Haixi Industrial Technology Innovation Center in Beilun Ningbo 315830 China School of Geographical Sciences University of Nottingham Ningbo China Ningbo 315100 China Water@Leeds School of Geography University of Leeds Leeds LS2 9JT United Kingdom Research Base for Shenzhen Municipal Policy & Development Southern University of Science and Technology Shenzhen 518000 China New Materials Institute University of Nottingham Ningbo China Ningbo 315100 China Key Laboratory for Carbonaceous Wastes Processing and Process Intensification of Zhejiang Province University of Nottingham Ningbo China Ningbo 315100 China State Key Lab of Urban and Regional Ecology Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing 100085 China

Urban agriculture, the cultivation, processing and distribution of plants and animals within urban or suburban boundaries, is becoming an increasingly relevant strategy to enhance food safety for urban residents. With the rapid urbanization in the past decades, three forms of urban agriculture have emerged in China: small-scale, capital-intensive, and tourism-type. Each form presents unique benefits and challenges, and their development has been largely shaped by the local socio-economic context and government policies. The benefits of urban agriculture are numerous including the improvement of community cohesion, promotion of physical health, enhancement of environmental sustainability, and creation of new economic opportunities. However, it also faces many challenges such as land availability, capital shortage, market access, and governmental support. This review summarized the benefits of urban agriculture and its current limitations and challenges, and proposed strategies to overcome these hurdles in China based on successful examples in the Global North. Four specific recommendations were provided to promote urban agriculture in China: integration of urban agriculture into cities, solutions for land and resource use, government support and reactions, as well as planning and regulations. Adoption these recommendations is expected to result in healthier cities and a more robust agricultural system in China. © 2024 The Author(s)

关键词： Environmental health Environmental sustainability Food security Global North Green city One health Urban farming Urban planning

来源：评论

学校读者我要写书评

暂无评论

Early Warning Method for Power Station Auxiliary Failure Considering Large-Scale Operating Conditions 2

Early Warning Method for Power Station Auxiliary Failure Con...

引用

2nd IEEE International Conference on Power and Energy Applications, ICPEA 2019

作者： Tingting, Yang Yang, Bai Weichun, Ge Huanhuan, Luo Guiping, Zhou You, Lv Beijing Key Laboratory of New Technology and System on Measuring and Control for Industrial Process North China Electric Power University Beijing102206 China State Grid Liaoning Electric Power Supply CO. LTD Shenyang Liaoning Province110004 China

ISBN: (纸本)9781728115962

Large-scale deep variable load of thermal power units will increase the hidden trouble of auxiliary equipment failure. Timely detection of minor faults and early warning are conducive to the safe operation of units. With the large-scale deep variable load of units, the operating conditions of auxiliary equipment also change in a large range, and the operating parameters fluctuate in a large range, which directly affects the accuracy of fault early warning algorithm based on operation data. In order to solve this problem, this paper uses a multivariate state estimation technique (MSET) algorithm for fault early warning. Firstly, the cluster method is used to divide the operating conditions of units, and process memory matrix is constructed under different operating conditions for modeling and calculation. The simulation results show that compared with the traditional method using one process memory matrix this method significantly improves the accuracy of fault early warning. © 2019 IEEE.

关键词： State estimation

来源：评论

学校读者我要写书评

暂无评论

Sequential Power Flow Calculation of AC/DC Hybrid system Considering Converter Station Loss and Its Capacity Constraints 3

Sequential Power Flow Calculation of AC/DC Hybrid System Con...

引用

3rd International Symposium on Resource Exploration and Environmental Science, REES 2019

作者： Zhu, Yuxin Wang, Xiaolan Zhang, Lu He, Naixing Key Laboratory of Advanced Industrial Process Control of Gansu Province Lanzhou University of Technology Lanzhou China School of Electrical Engineering and Information Lanzhou University of Technology Lanzhou China Lanzhou New District Municipal Investment Management Co. Ltd. Lanzhou China

In the power flow calculation of AC/DC hybrid distribution network, the loss and capacity of the converter station have a great influence on the power flow calculation, and the AC/DC alternately solves the power flow, which has the disadvantage of poor convergence performance. In this paper, the power flow model of AC/DC hybrid distribution network with VSC is established. The loss mechanism of the converter station is analyzed and the capacity limit of the converter station is fully considered. The sequential power flow algorithm with VSC AC-DC hybrid distribution network is proposed. Its convergence performance is improved. In the improved 33-node AC/DC hybrid power distribution network with multiple types of DG, the correctness, effectiveness and algorithm fastness of the algorithm are verified. © Published under licence by IOP Publishing Ltd.

关键词： Electric load flow

来源：评论

学校读者我要写书评

暂无评论

Front Cover: Revealing the Roles of Guanidine Hydrochloride Ionic Liquid in Ion Inhibition and Defects Passivation for Efficient and Stable Perovskite Solar Cells (ChemSusChem 14/2024)

引用

ChemSusChem 2024年第14期17卷

作者： Aamir Saeed Dr. Liang Wang Zhaoyang Chen Junhui Fang Iqbal Hussain Lin Yuan Shuai Wang Jianwei Zhao Prof. Dr. Haitao Zhang Prof. Dr. Qingqing Miao CAS Key Laboratory of Green Process and Engineering Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 P.R. China University of Chinese Academy of Sciences Beijing 100049 China Info-Powered Energy System Research Center (i-PERC) The University of Electro-Communications Tokyo 182-8585 Longzihu New Energy Laboratory Zhengzhou Institute of Emerging Industrial Technology Henan University Zhengzhou 450000 P. R. China Shenzhen Huasuan Technology Co. Ltd Shenzhen 518055 P.R. China Langfang Technological Centre of Green Industry Langfang 065001 P.R. China

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：