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reference tracking control design for a class of nonlinear systems with time-varying delays

Mei-qin LIU,Hai-yang CHEN,Sen-lin ZHANG

Frontiers of Information Technology & Electronic Engineering 2015, Volume 16, Issue 9,   Pages 759-768 doi: 10.1631/FITEE.1500053

Abstract: paper investigates the trajectory tracking control for a class of nonlinear systems with timevarying delays

Keywords： H∞     reference tracking     Nonlinear system     State feedback control     Time-varying delays     Unified model    

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A multiscale-contour-based interpolation framework for generating a time-varying quasi-dense point cloud

Chu-hua HUANG,Dong-ming LU,Chang-yu DIAO

Frontiers of Information Technology & Electronic Engineering 2016, Volume 17, Issue 5,   Pages 422-434 doi: 10.1631/FITEE.1500316

Abstract: To speed up the reconstruction of 3D dynamic scenes in an ordinary hardware platform, we propose an efficient framework to reconstruct 3D dynamic objects using a multiscale-contour-based interpolation from multi-view videos. Our framework takes full advantage of spatio-temporal-contour consistency. It exploits the property to interpolate single contours, two neighboring contours which belong to the same model, and two contours which belong to the same view at different times, corresponding to point-, contour-, and model-level interpolations, respectively. The framework formulates the interpolation of two models as point cloud transport rather than non-rigid surface deformation. Our framework speeds up the reconstruction of a dynamic scene while improving the accuracy of point-pairing which is used to perform the interpolation. We obtain a higher frame rate, spatio-temporal-coherence, and a quasi-dense point cloud sequence with color information. Experiments with real data were conducted to test the efficiency of the framework.

Keywords： Free-viewpoint video     Point-pair     Multiscale-contour-based interpolation     Spatio-temporal-contour     Consistency     Time-varying    

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Effects of time-varying liquid bridge forces on rheological properties, and resulting extrudability and

Frontiers of Structural and Civil Engineering   Pages 1295-1309 doi: 10.1007/s11709-023-0999-1

Abstract: First, a discrete element model with time-varying liquid bridge forces is developed to investigate theThe study demonstrates that the effects of time-varying liquid bridge forces on rheological properties

Keywords： particle-based simulation     liquid bridge force     rheological property     3D printing mortar     extrudability     constructability    

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Time-varying formation tracking for uncertain second-order nonlinearmulti-agent systems

Mao-peng RAN, Li-hua XIE, Jun-cheng LI

Frontiers of Information Technology & Electronic Engineering 2019, Volume 20, Issue 1,   Pages 76-87 doi: 10.1631/FITEE.1800557

Abstract:

Our study is concerned with the time-varying formation tracking problem for second-order multi-agentunknown nonlinear dynamics and external disturbance, and the states of the followers form a predefined time-varyingThen we propose a novel ESO based time-varying formation tracking protocol.It is proved that, under the proposed protocol, the ESO estimation error and the time-varying formation

Keywords： Multi-agent system     Time-varying formation     Formation tracking     Nonlinear dynamics     Extended state observer    

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Modified Performance Index Method for Parameter Estimation for Industrial Process with Time-varying

Zhang Chenghui

Strategic Study of CAE 2001, Volume 3, Issue 11,   Pages 54-59

Abstract:

A new estimation method based on modified performance index is proposed for time-varying process to

Keywords： parameter estimation     method of calculation     least square method     time-varying system     industrial production    

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Convergence of time-varying networks and its applications Research Articles

Qingling Wang,qlwang@seu.edu.cn

Frontiers of Information Technology & Electronic Engineering 2021, Volume 22, Issue 1,   Pages 1-140 doi: 10.1631/FITEE.2000160

Abstract: In this study, we present the convergence of . Then, we apply the convergence property to cooperative control of nonlinear multiagent systems (MASs) with (UCDs), and illustrate a new kind of based control algorithms. It is proven that if the are cut-balance, the convergence of nonlinear MASs with nonidentical UCDs is achieved using the presented algorithms. A critical feature of this application is that the designed algorithms can deal with nonidentical UCDs by employing conventional s. Finally, one simulation example is given to illustrate the effectiveness of the presented algorithms.

Keywords： Time-varying networks     Unknown control directions     Nussbaum-type function     Cut-balance condition    

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Controllability of fractional-order damped systems with time-varying delays in control Research Articles

Bin-bin He, Hua-cheng Zhou, Chun-hai Kou,hebinbin45@126.com,hczhou@amss.ac.cn,kouchunhai@dhu.edu.cn

Frontiers of Information Technology & Electronic Engineering 2020, Volume 21, Issue 6,   Pages 809-962 doi: 10.1631/FITEE.1900736

Abstract: In this study, we focus on the of in linear and nonlinear cases with multiple in control. For the linear system based on the Mittag-Leffler matrix function, we define a , which is useful in judging whether the system is controllable or not. Furthermore, in two special cases, we present serval equivalent controllable conditions which are easy to verify. For the nonlinear system, under the of its corresponding linear system, we obtain a sufficient condition on the nonlinear term to ensure that the system is controllable. Finally, two examples are given to illustrate the theory.

Keywords： 可控性；分数阶阻尼系统；时变时滞；Gramian矩阵    

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Attuned design of demand response program and M-FACTS for relieving congestion in a restructured market environment

Y. HASHEMI,H. SHAYEGHI,B. HASHEMI

Frontiers in Energy 2015, Volume 9, Issue 3,   Pages 282-296 doi: 10.1007/s11708-015-0366-6

Abstract: For the solution of this problem a nonlinear time-varying evolution (NTVE) based multi-objective particlethe set of Pareto-solutions obtained through multi-objective particle swarm optimization-nonlinear time-varying

Keywords： M-FACTS)     demand response     fuzzy decision making     multi-objective particle swarm optimization-nonlinear time-varying    

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New results on impulsive type inertial bidirectional associativememory neural networks Research Articles

Chaouki AOUITI, Mahjouba Ben REZEG, Yang CAO

Frontiers of Information Technology & Electronic Engineering 2020, Volume 21, Issue 2,   Pages 324-339 doi: 10.1631/FITEE.1900181

Abstract: This paper is concerned with inertial bidirectional associative memory neural networks with mixed delays

Keywords： Inertial neural networks     Anti-periodic solutions     Global exponential stability     Impulsive effect     Time-varying    

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Event-triggered adaptive finite-time control for nonlinear systems under asymmetric time-varying state Research Article

Yan Wei, Jun Luo, Huaicheng Yan, Yueying Wang,wyy676@126.com

Frontiers of Information Technology & Electronic Engineering 2021, Volume 22, Issue 12,   Pages 1551-1684 doi: 10.1631/FITEE.2000692

Abstract: To prevent asymmetric time-varying from being violated, a tan-type is established to transform the

Keywords： 事件触发控制；非线性映射；自适应模糊控制；有限时间；状态约束    

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Controllability of Boolean control networks with multiple time delays in both states and controls Research Article

Yifeng LI, Lan WANG,liyifeng@cqnu.edu.cn,wanglan202212@126.com

Frontiers of Information Technology & Electronic Engineering 2023, Volume 24, Issue 6,   Pages 906-915 doi: 10.1631/FITEE.2200618

Abstract: In this paper, the problem of of (BCNs) with multiple s in both states and controls is investigated. First, the problem of BCNs with multiple s in controls is considered. For this problem, a matrix is constructed by defining a new product of matrices, based on which a necessary and sufficient condition is obtained. Then, the of BCNs with multiple s in states is studied by giving a necessary and sufficient condition. Subsequently, based on these results, a matrix for BCNs with multiple s in both states and controls is proposed that provides a concise condition. Finally, two examples are given to illustrate the main results.

Keywords： Boolean control networks     Semi-tensor product of matrices     Controllability     Time delay    

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Synchronization of nonlinear multi-agent systems using a non-fragile sampled data control approach and its application to circuit systems Research Article

Stephen AROCKIA SAMY, Raja RAMACHANDRAN, Pratap ANBALAGAN, Yang CAO,caoyeacy@seu.edu.cn

Frontiers of Information Technology & Electronic Engineering 2023, Volume 24, Issue 4,   Pages 553-566 doi: 10.1631/FITEE.2200181

Abstract: The main aim of this work is to design a scheme for the criteria for interconnected coupled circuit systems (multi-agent systems, MASs). NFSDC is used to conduct synchronization analysis of the considered MASs in the presence of s. By constructing suitable Lyapunov functions, sufficient conditions are derived in terms of linear matrix inequalities (LMIs) to ensure synchronization between the MAS leader and follower systems. Finally, two numerical examples are given to show the effectiveness of the proposed control scheme and less conservation of the proposed Lyapunov functions.

Keywords： Multi-agent systems (MASs)     Non-fragile sampled data control (NFSDC)     Time-varying delay     Linear matrix    

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Modeling and simulating the impact of forgetting and communication errors on delays in civil infrastructure

Zhe SUN, Cheng ZHANG, Pingbo TANG

Frontiers of Engineering Management 2021, Volume 8, Issue 1,   Pages 109-121 doi: 10.1007/s42524-019-0084-6

Abstract: challenges to the cognitive and communication skills of handoff participants and constantly result in delaysTraveling time and changing field conditions bring additional challenges to effective coordination amongConsequently, delays frequently occur in NPP outages and bring significant socioeconomic losses.communication issues affect outage workflows force managers to rely on personal experiences in diagnosing delaysthe proposed handoff modeling can help predict the impact of cognitive and communication issues on delays

Keywords： NPP outage     human error     team cognition     handoff modeling    

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Position-varying surface roughness prediction method considering compensated acceleration in milling

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 4,   Pages 855-867 doi: 10.1007/s11465-021-0649-z

Abstract: Aiming at surface roughness prediction in the machining process, this paper proposes a position-varying

Keywords： surface roughness prediction     compensated acceleration     milling     thin-walled workpiece    

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Elastic analysis of heterogeneous thick-walled spherical pressure vessels with parabolic varying properties

Keyhan KARAMI, Majid ABEDI, Mohammad ZAMANI NEJAD, Mohammad Hassan LOTFIAN

Frontiers of Mechanical Engineering 2012, Volume 7, Issue 4,   Pages 433-438 doi: 10.1007/s11465-012-0336-1

Abstract:

On the basis of plane elasticity theory (PET), the displacement and stress components in a thick-walled spherical pressure vessels made of heterogeneous materials subjected to internal and external pressure is developed. The mechanical properties except the Poisson’s ratio are assumed to obey the parabolic variations throughout the thickness. Effect of material inhomogeneity on the elastic deformations and stresses is investigated. The analytical solutions and the solutions carried out through the FEM have a good agreement. The values used in this study are arbitrary chosen to demonstrate the effect of inhomogeneity on displacements, and stresses distributions.

Keywords： thick-walled spherical vessels     heterogeneous materials     FGM     FEM     parabolic varying properties    

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Title Author Date Type Operation

reference tracking control design for a class of nonlinear systems with time-varying delays

Mei-qin LIU,Hai-yang CHEN,Sen-lin ZHANG

Journal Article

A multiscale-contour-based interpolation framework for generating a time-varying quasi-dense point cloud

Chu-hua HUANG,Dong-ming LU,Chang-yu DIAO

Journal Article

Effects of time-varying liquid bridge forces on rheological properties, and resulting extrudability and

Journal Article

Time-varying formation tracking for uncertain second-order nonlinearmulti-agent systems

Mao-peng RAN, Li-hua XIE, Jun-cheng LI

Journal Article

Modified Performance Index Method for Parameter Estimation for Industrial Process with Time-varying

Zhang Chenghui

Journal Article

Convergence of time-varying networks and its applications

Qingling Wang,qlwang@seu.edu.cn

Journal Article

Controllability of fractional-order damped systems with time-varying delays in control

Bin-bin He, Hua-cheng Zhou, Chun-hai Kou,hebinbin45@126.com,hczhou@amss.ac.cn,kouchunhai@dhu.edu.cn

Journal Article

Attuned design of demand response program and M-FACTS for relieving congestion in a restructured market environment

Y. HASHEMI,H. SHAYEGHI,B. HASHEMI

Journal Article

New results on impulsive type inertial bidirectional associativememory neural networks

Chaouki AOUITI, Mahjouba Ben REZEG, Yang CAO

Journal Article

Event-triggered adaptive finite-time control for nonlinear systems under asymmetric time-varying state

Yan Wei, Jun Luo, Huaicheng Yan, Yueying Wang,wyy676@126.com

Journal Article

Controllability of Boolean control networks with multiple time delays in both states and controls

Yifeng LI, Lan WANG,liyifeng@cqnu.edu.cn,wanglan202212@126.com

Journal Article

Synchronization of nonlinear multi-agent systems using a non-fragile sampled data control approach and its application to circuit systems

Stephen AROCKIA SAMY, Raja RAMACHANDRAN, Pratap ANBALAGAN, Yang CAO,caoyeacy@seu.edu.cn

Journal Article

Modeling and simulating the impact of forgetting and communication errors on delays in civil infrastructure

Zhe SUN, Cheng ZHANG, Pingbo TANG

Journal Article

Position-varying surface roughness prediction method considering compensated acceleration in milling

Journal Article

Elastic analysis of heterogeneous thick-walled spherical pressure vessels with parabolic varying properties

Keyhan KARAMI, Majid ABEDI, Mohammad ZAMANI NEJAD, Mohammad Hassan LOTFIAN

Journal Article