检索结果-南通市图书馆

Absolute stabilization of singular systems with ferromagnetic hysteresis nonlinearity

维普期刊数据库评论

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(Information Sciences) 2013年第7期56卷 259-272页

作者： ZHANG HuaGuang wang yingchun SONG Zheng School of Information Science and Engineering Northeastern University Stake Key Laboratory of Synthetical Automation of Process Industies (Northeasten University) Beijing Institute of Spacecraft System Engineering

This paper is concerned with the absolute stabilization problem of a class of singular systems with feedback connected ferromagnetic hysteresis nonlinearities. Firstly, a novel differential-integral loop transformation framework is developed to achieve an augmented singular system model. Secondly, by constructing a new passive output derivative operator of hysteresis nonlinearity and establishing the bound condition of the solution of ferromagnetic hysteresis model, the equivalent absolute stability criterion of singular systems with hysteresis feedback is derived based on KYP method and LMIs technique. Furthermore, the strict LMIs conditions for absolute stabilization are obtained, which can easily be checked by the LMI toolbox in MATLAB. Finally, two examples are given to illustrate the effectiveness of the proposed method.

关键词： ferromagnetic hysteresis singular systems absolute stability extended Popov criterion

Adaptive Containment Control for Fractional-Order Nonlinear Multi-Agent Systems With Time-Varying Parameters

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

IEEE/CAA Journal of Automatica Sinica 2022年第9期9卷 1627-1638页

作者： Yang Liu Huaguang Zhang yingchun wang Hongjing Liang the College of Information Science and Engineering Northeastern UniversityShenyang 110004China the State Key Laboratory of Synthetical Automation for Process Industries and also with the School of Information Science and EngineeringNortheastern UniversityShenyang 110004China the School of Automation Engineering University of Electronic Science and Technology of ChinaChengdu 611731China

This paper investigates adaptive containment control for a class of fractional-order multi-agent systems(FOMASs)with time-varying parameters and *** using the bounded estimation method,the difficulty generated by the timevarying parameters and disturbances is *** command filter is introduced to solve the complexity problem inherent in adaptive backstepping ***,in order to eliminate the effect of filter errors,a novel distributed error compensating scheme is constructed,in which only the local information from the neighbor agents is ***,a distributed adaptive containment control scheme for FOMASs is developed based on backstepping to guarantee that the outputs of all the followers are steered to the convex hull spanned by the *** on the extension of Barbalat's lemma to fractional-order integrals,it can be proven that the containment errors and the compensating signals have asymptotic ***,three simulation examples are given to show the feasibility and effectiveness of the proposed control method.

关键词： Adaptive backstepping control command filter fractional-order multi-agent system time-varying parameters

Bipartite Formation Tracking for Multi-Agent Systems Using Fully Distributed Dynamic Edge-Event-Triggered Protocol

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

IEEE/CAA Journal of Automatica Sinica 2022年第5期9卷 847-853,I0002-I0005页

作者： Weihua Li Huaguang Zhang Yu Zhou yingchun wang College of Information Science and Engineering Northeastern UniversityShenyang 110819China State Key Laboratory of Synthetical Automation for Process Industries Northeastern UniversityShenyang 110004 IEEE

In this study,the bipartite time-varying output formation tracking problem for heterogeneous multi-agent systems(MASs)with multiple leaders and switching commu-nication networks is *** that the switching communication networks may be connected or *** address this problem,a novel reduced-dimensional observer-based fully distributed asynchronous dynamic edge-event-triggered output feedback control protocol is developed,and the Zeno behavior is ruled *** theoretical analysis gives the admissible switching frequency and switching width under the proposed control *** from the existing works,the control protocol reduces the dimension of information to be transmitted between neighboring ***,since an additional positive internal dynamic variable is introduced into the triggering functions,the control protocol can guarantee a larger inter-event time interval compared with previous ***,a simulation example is given to verify the effectiveness and performance of the theoretical result.

关键词： Bipartite control dynamic edge-event-triggered control formation tracking multi-agent systems(MASs)

Fault-tolerant control of linear uncertain systems using H∞ robust predictive control

在线全文

学校读者我要写书评

暂无评论

Journal of Systems Engineering and Electronics 2008年第3期19卷 571-577页

作者： Chen Xueqin Geng Yunhai Zhang yingchun wang Feng Research Center of Satellite Technology Harbin Inst. of Technology Harbin 150080 P. R. China

The robust fault-tolerant control problem of linear uncertain systems is studied. It is shown that a solution for this problem can be obtained from a H∞ robust predictive controller （RMPC） by the method of linear matrix inequality （LMI）. This approach has the advantages of both H∞ control and MPC： the robustness and ability to handle constraints explicitly. The robust closed-loop stability of the linear uncertain system with input and output constraints is proven under an actuator and sensor faults condition. Finally, satisfactory results of simulation experiments verify the validity of this algorithm.

关键词： RMPC linear matrix inequality H∞ control fault-tolerant control.

Monocyte-derived KCs(MoKCs)contribute to the KC pool in NASH

在线全文

学校读者我要写书评

暂无评论

Cellular & Molecular Immunology 2021年第3期18卷 518-519页

作者： yingchun wang Lifen Gao Key Laboratory for Experimental Teratology of Ministry of Education Shandong Key Laboratory of Infection and Immunityand Department of ImmunologySchool of Basic Medical SciencesCheeloo College of MedicineShandong UniversityJinanShandong 250012P.R.China

Nonalcoholic fatty liver disease(NAFLD)is now recognized as the most common liver disease worldwide and has increasingly become a serious hazard to human *** consists of a spectrum of disease states ranging from simple steatosis to more severe disease termed nonalcoholic steatohepatitis(NASH),fibrosis,cirrhosis,and even hepatocellular carcinoma.

关键词： NAFLD liver NASH

A survey on deploying mobile deep learning applications:A systemic and technical perspective

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Digital Communications and Networks 2022年第1期8卷 1-17页

作者： yingchun wang Jingyi wang Weizhan Zhang Yufeng Zhan Song Guo Qinghua Zheng Xuanyu wang a MOEKLINNS Lab School of Computer Science and TechnologyXi'an Jiaotong UniversityShaanxi710049China Department of Computing The Hong Kong Polytechnic UniversityHK999077China

With the rapid development of mobile devices and deep learning,mobile smart applications using deep learning technology have sprung *** satisfies multiple needs of users,network operators and service providers,and rapidly becomes a main research *** recent years,deep learning has achieved tremendous success in image processing,natural language processing,language analysis and other research *** the task performance has been greatly improved,the resources required to run these models have increased *** poses a major challenge for deploying such applications on resource-restricted mobile *** intelligence needs faster mobile processors,more storage space,smaller but more accurate models,and even the assistance of other network *** help the readers establish a global concept of the entire research direction concisely,we classify the latest works in this field into two categories,which are local optimization on mobile devices and distributed optimization based on the computational position of machine learning *** also list a few typical scenarios to make readers realize the importance and indispensability of mobile deep learning ***,we conjecture what the future may hold for deploying deep learning applications on mobile devices research,which may help to stimulate new ideas.

关键词： Deep learning Mobile computing Distributed offloading Distributed caching

Research on Electronic Document Management System Based on Cloud Computing

在线全文

学校读者我要写书评

暂无评论

Computers, Materials & Continua 2021年第3期66卷 2645-2654页

作者： Jin Han Cheng wang Jie Miao Mingxin Lu yingchun wang Jin Shi Nanjing University of Information Science&Technology Nanjing210044 China 2Research Institute of State Grid Hunan Electric Power Company LimitedChangsha410007 China 3Nanjing UniversityNanjing210093 China 4Waterford Institute of TechnologyWaterford CityX91 K0EKIreland

With the development of information technology,cloud computing technology has brought many conveniences to all aspects of work and *** the continuous promotion,popularization and vigorous development of e-government and e-commerce,the number of documents in electronic form is getting larger and *** document is an indispensable main tool and real record of e-government and business *** to scientifically and effectively manage electronic documents?This is an important issue faced by governments and enterprises in improving management efficiency,protecting state secrets or business secrets,and reducing management *** paper discusses the application of cloud computing technology in the construction of electronic file management system,proposes an architecture of electronic file management system based on cloud computing,and makes a more detailed discussion on key technologies and *** electronic file management system is built on the cloud architecture to enable users to upload,download,share,set security roles,audit,and retrieve files based on multiple *** electronic file management system based on cloud computing can make full use of cloud storage,cloud security,and cloud computing technologies to achieve unified,reliable,and secure management of electronic files.

关键词： Cloud computing technology electronic file management system cloud security

Electrochemically mediated decarboxylative acylation of N-nitrosoanilines with α-oxocarboxylic acids

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2023年第2期34卷 170-173页

作者： Xinyu wang Shihong Wu Yujing Zhong yingchun wang Yingming Pan Haitao Tang State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources School of Chemistry and Pharmaceutical Sciences of Guangxi Normal UniversityGuilin 541004China College of Chemistry and Chemical Engineering Jishou UniversityJishou 416000China

An efficient palladium-catalyzed electrooxidation C–H acylation reaction of N-nitrosoanilines with α-oxocarboxylic acids was developed. The anodic oxidation of the Pd(Ⅱ) intermediate was found to be the key to complete the reaction. In this case, the N-nitroso group was observed to be an effective directing group for C–H activation reaction. Moreover, the synthetic transformation of derivatives of natural products(L-menthol, dehydroepiandrosterone, and pregnenolone) was successfully realized. Finally, flow electrochemical synthesis of some substrates was achieved.

关键词： Eelectro-oxidation C-H acylation N-Nitrosoanilines Flow electrochemical synthesis

Impact of Urbanization on Low-Temperature Precipitation in Beijing during 1960–2008

在线全文

学校读者我要写书评

暂无评论

Advances in Atmospheric Sciences 2014年第1期31卷 48-56页

作者： HAN Zuoqiang YAN Zhongwei LI Zhen LIU Weidong wang yingchun Key Laboratory of Regional Climate–Environment for Temperate East Asia Institute of Atmospheric Physics Chinese Academy of Sciences Graduate University of Chinese Academy of Science Institute of Urban Meteorology China Meteorological Administration

Daily precipitation and temperature records at 13 stations for the period 1960-2008 were analyzed to identify climatic change and possible effects of urbanization on low-temperature precipitation [LTP, precipitation of ≥ 0.1 mm d^-1 occurring under a daily minimum temperature （Tmin） of ≤ 0℃] in the greater Beijing region （B JR）, where a rapid process of urbaniza tion has taken place over the last few decades. The paper provides a climatological overview of LTP in B JR. LTP contributes 61.7% to the total amount of precipitation in B JR in the cold season （November-March）. There is a slight increasing trend [1.22 mm （10 yr）^-1] in the amount of total precipitation for the cold season during 1960-2008. In contrast, the amount of LTP decreases by 0.6 mm （10 yr）^-1. The warming rate of Train in B JR is 0.66℃ （10 yr）^-1. Correspondingly, the frequency of LTP decreases with increasing Tmin by -0.67 times per ℃. The seasonal frequency and amount of LTP in southeast B JR （mostly urban sites） are 17%-20% less than those in the northwestern （rural and montane sites）. The intensity of LTP for the urban sites and northeastern B JR exhibited significant enhancing trends [0.18 and 0.15 mm d^- 1 （10 yr）^- 1, respectively]. The frequency of slight LTP （〈0.2 mm d^-1） significantly decreased throughout B JR [by about -15.74% （10 yr）^-1 in the urban area and northeast B JR], while the contribution of the two heaviest LTP events to total LTP amount significantly increased by 3.2% （10 yr） ^-1.

关键词： urbanization low-temperature precipitation empirical orthogonal function climate change