检索结果-南通市图书馆

Further results on quantized stabilization of nonlinear cascaded systems with dynamic uncertainties

在线全文

学校读者我要写书评

暂无评论

Science China(Information Sciences) 2016年第7期59卷 202-213页

作者： tengfei liu Zhong-Ping JIANG State Key Laboratory of Synthetical Automation for Process Industries Northeastern University Department of Electrical and Computer Engineering Polytechnic School of Engineering New York University

This article studies the quantized partial-state feedback stabilization of a class of nonlinear cascaded systems with dynamic uncertainties. Under the assumption that the dynamic uncertainties are input-to-state practically stable, a novel recursive design method is developed for quantized stabilization by taking into account the influence of quantization and using the small-gain theorem. When the dynamic uncertainty is input-to-state stable, asymptotic stabilization can be achieved with the proposed quantized control law.

关键词： quantized control nonlinear systems dynamic uncertainties asymptotic stabilization

A junction-by-junction feedback-based strategy with convergence analysis for dynamic traffic assignment

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Science China(Information Sciences) 2016年第1期59卷 30-46页

作者： tengfei liu Xuesong LU Zhong-Ping JIANG State Key Laboratory of Synthetical Automation for Process Industries Northeastern University Department of Electrical and Computer Engineering University of Connecticut Department of Electrical and Computer Engineering Polytechnic School of Engineering New York University

By considering the traffic assignment problem as a control problem, this paper develops a new realtime route guidance strategy for accurate convergence of the traffic flows to user equilibrium(UE) or system optimum(SO), in the presence of drivers’ response uncertainties. With the new guidance strategy, the drivers make routing decisions based on the route guidance information from junction to junction. Specifically, instead of total travel cost of every route from origin to destination, the travel cost of every alternative link plus the average cost to destination from the next junction corresponding to the alternative link is sent to the drivers at each specific junction. The drivers’ response to the route guidance information is directly modeled by the splitting rates at the junctions, which are simply negatively correlated with the comparison of related cost information and are able to take into account the drivers’ response uncertainties. With the proposed route guidance strategy, in the case of fixed travel demands, the accurate convergence of the traffic flows to a UE is guaranteed in the presence of drivers’ response uncertainties by using La Salle’s invariance principle. When marginal travel cost information, instead of travel cost information, is sent to the drivers, a system optimum can be achieved under a mild condition on the marginal cost function.

关键词： dynamic traffic assignment user equilibrium(UE) system optimum(SO) convergence La Salle’s invariance principle

Measurement feedback control of nonlinear systems:a small-gain approach

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Control and Decision 2020年第1期7卷 64-89页

作者： tengfei liu Zhong-Ping Jiang State Key Laboratory of Synthetical Automation for Process Industries Northeastern UniversityShenyang 110004People’s Republic of China Department of Electrical and Computer Engineering New York UniversityBrooklynNYUSA

This paper presents a new tool for feedback control design of nonlinear systems in the presence of non-smooth measurement *** introduce a small-gain design approach to robust control of nonlinear uncertain systems with disturbed *** a design ingredient,a modified gain assignment technique for measurement feedback control of nonlinear uncertain systems is *** a recursive control design approach,the closed-loop system is transformed into a network of input-to-state stable(ISS)systems and the influences of the measurement errors are represented by ISS *** feedback control objective is achieved by applying the cyclic-small-gain theorem to the closed-loop ***,event-triggered control of nonlinear systems is studied in a unified framework of measurement feedback control.

关键词： Nonlinear systems measurement error nonlinear small-gain theorem input-to-state stability

Distributed Control of Nonlinear Uncertain Systems:A Cyclic-small-gain Approach

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

IEEE/CAA Journal of Automatica Sinica 2014年第1期1卷 46-53页

作者： tengfei liu Zhongping Jiang the State Key Laboratory of Synthetical Automation for Process Industries Northeastern University the Department of Electrical and Computer Engineering Polytechnic Institute of New York University

This paper presents a cyclic-small-gain approach to distributed control of nonlinear multi-agent systems for output agreement. Through a novel nonlinear control law design, the output agreement problem is transformed into a stabilization problem, and the closed-loop multi-agent system is transformed into a large-scale system composed of input-to-state stability(ISS) subsystems which are interconnected with each other through redefined outputs. By forcing the redefined outputs to go to arbitrarily small neighborhoods of the origin, practical consensus is achieved for the agents in the sense that their outputs ultimately converge to each other within an arbitrarily small region. A recently developed cyclic-small-gain result is adopted to assign appropriately the ISS gains to the transformed interconnected system. Moreover, if the system is disturbancefree, then consensus can be guaranteed. Interestingly, the closedloop multi-agent system is also robust to bounded time-delays and disturbances in information exchange.

关键词： Distributed control robust control nonlinear systems uncertainties input-to-state stability (ISS) input-to-output stability (IOS) small-gain theorem

Preface——Special Issue on New Directions in Nonlinear and Distributed Control

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Systems Science & Complexity 2018年第1期31卷 1-3页

作者： liu tengfei XIN Bin JIANG Zhong-Ping State Key Laboratory of Synthetical Automation for Process Industries Northeastern University Shenyang 110819 China School of Automation State Key Laboratory of Intelligent Control and Decision of Complex Systems Beijing Advanced Innovation Center for Intelligent Robots and Systems Beijing Institute of Technology Beijing 100081 China Tandon School of Engineering New York University Brooklyn NY 11201 USA

Nonlinearity is ubiquitous in engineering and natural *** development of nonlinear control can be traced back to decades *** date,the research has reached the stage that emphasizes developing methodologies that can ha... 详细信息

关键词：控制问题非线性分布式工程应用程序电子物理自然系统生产线相互作用

New Results in Stabilization of Uncertain Nonholonomic Systems:An Event-Triggered Control Approach

在线全文

学校读者我要写书评

暂无评论

Journal of Systems Science & Complexity 2021年第5期34卷 1953-1972页

作者： liu tengfei ZHANG Pengpeng WANG Mengxi JIANG Zhong-Ping State Key Laboratory of Synthetical Automation for Process Industries Northeastern UniversityShenyang 110004China. Department of Electrical and Computer Engineering New York University370 Jay StreetBrooklynNY 11201USA

This paper reports latest developments in event-triggered and self-triggered control of uncertain nonholonomic systems in the perturbed chained *** order to tackle the effects of drift uncertain nonlinearities,nonholonomic constraints and nonsmooth aperiodic sampling in eventbased control,a novel systematic design scheme is proposed by integrating set-valued maps with stateseparation and state-scaling *** stability analysis of the closed-loop event-triggered control system is based on the cyclic-small-gain techniques that overcome the limitation of Lyapunov theory in the construction of Lyapunov functions for nonsmooth dynamical systems and enjoy inherent robustness properties due to the use of gain-based characterization of robust *** specifically,the closed-loop event-triggered control system is transformed into an interconnection of multiple input-tostate stable systems,to which the cyclic-small-gain theorem is applied for robust stability *** self-triggered mechanisms are also developed as natural extensions of the event-triggered control *** proposed event-based control design approach is new and original even when the system model is reduced to the ideal unperturbed chained ***,the proposed methodology is also applicable to a broader class of nonholonomic systems subject to state and input-dependent *** efficacy of the obtained event-triggered controllers is validated by a benchmark example of mobile robots subject to parametric uncertainties and a measurement noise such as bias in the orientation.

关键词： Event-triggered control nonholonomic systems self-triggered control stabilization

A Nonlinear Small-Gain Theorem for Large-Scale Infinite-Dimensional Systems

在线全文

学校读者我要写书评

暂无评论

Journal of Systems Science & Complexity 2018年第1期31卷 188-199页

作者： BAO Adiya liu tengfei JIANG Zhong-Ping ZHANG Lina State Key Laboratory of Synthetical Automation for Process Industries Northeastern University Shenyang 110819 China Tandon School of Engineering New York University Brooklyn NY 11201 USA

This paper develops a large-scale small-gain result for dynamic networks composed of infinite-dimensional subsystems. It is assumed that the subsystems are input-to-output stable（IOS）and unboundedness observable（UO）, and the large-scale infinite-dimensional system can be proved to be IOS and UO if the proposed small-gain condition is satisfied.

关键词： Infinite-dimensional systems input-to-output stability(IOS) input-to-state stability(ISS) small-gain theorem

A Federated Learning Framework with Blockchain-Based Auditable Participant Selection

在线全文

学校读者我要写书评

暂无评论

Computers, Materials & Continua 2024年第6期79卷 5125-5142页

作者： Huang Zeng Mingtian Zhang tengfei liu Anjia Yang College of Cyber Security Jinan UniversityGuangzhou510632China

Federated learning is an important distributed model training technique in Internet of Things(IoT),in which participant selection is a key component that plays a role in improving training efficiency and model *** module enables a central server to select a subset of participants to performmodel training based on data and device *** doing so,selected participants are rewarded and actively perform model training,while participants that are detrimental to training efficiency and model accuracy are ***,in practice,participants may suspect that the central server may have miscalculated and thus not made the selection *** lack of trustworthiness problem,which can demotivate participants,has received little *** problem that has received little attention is the leakage of participants’private information during the selection *** will therefore propose a federated learning framework with auditable participant *** supports smart contracts in selecting a set of suitable participants based on their training loss without compromising the *** the possibility of malicious campaigning and impersonation of participants,the framework employs commitment schemes and zero-knowledge proofs to counteract these malicious ***,we analyze the security of the framework and conduct a series of experiments to demonstrate that the framework can effectively improve the efficiency of federated learning.

关键词： Federated learning internet of things participant selection blockchain auditability privacy

Engineered exosome hybrid copper nanoscale antibiotics facilitate simultaneous self-assembly imaging and elimination of intracellular multidrug-resistant superbugs

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 2024年第7期35卷 319-324页

作者： Zengchao Guo Weiwei liu tengfei liu Jinpeng Wang Hui Jiang Xiaohui liu Yossi Weizmann Xuemei Wang State Key Laboratory of Digital Medical Engineering School of Biological Science and Medical EngineeringSoutheast UniversityNanjing 210096China Department of Chemistry Ben-Gurion University of the NegevBeer-Sheva 8410501Israel

With the increasing emergence of bacterial infections,especially multidrug-resistant(MDR)bacteria,poses an urgent *** study demonstrated a novel multifunctional nanotheranostics platform developed by the strategic integration of both in-situ bio-assembly imaging and target bacteria *** the introduction of copper ions into bacteria,the Cu^(2+)could spontaneously bio-selfassembled into a multifunctional copper nanoclusters(NCs)which efficiently enhanced epigallocatechin gallate(EGCG)uptake into *** visualizing the bacteria,the developed theranostic nanoplatform exhibited highly efficient disinfection activities with negligible side effects as reflected by higher cell viability and insignificant hemolytic ***,the exosomal formulation of EGCG integrated with Cu^(2+)showed an increased intracellular antibacterial activity,which could eliminate most of the methicillin-resistant Staphylococcus aureus(MRSA)phagocytosed by macrophages,guide macrophages toward M2-like phenotype polarization and alleviate inflammation,without exhibiting obvious cytotoxicity on host *** regimen could be viewed as an effective strategy for the sterilization of intractable bacterial infections.

关键词： In situ self-assembled Exosome Antibacterial agents Bioimaging Intracellular infection