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An Intelligent Non-Collocated Control Strategy for Ball-Screw Feed Drives with Dynamic Variations

Hui Liu, Jun Zhang, Wanhua Zhao

Engineering 2017, Volume 3, Issue 5,   Pages 641-647 doi: 10.1016/J.ENG.2017.04.007

Abstract:

The ball-screw feed drive has varying high-order dynamic characteristics due to flexibilities of theThe MCM utilizes a combination of peak filters and notch filters, thereby shaping the plant dynamicsnetwork (ANN) as a smooth parameter interpolator updates the parameters of the filters in real time in order

Keywords： Ball-screw feed drives     Varying high-order dynamics     Non-collocated control     Modal characteristic modifier    

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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-agentsystems that are subject to unknown nonlinear dynamics and external disturbance, and the states of thefollowers form a predefined time-varying formation while tracking the state of the leader.The total uncertainty lumps the unknown nonlinear dynamics and the external disturbance, and is regardedThen we propose a novel ESO based time-varying formation tracking protocol.

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

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High-order phase-field model with the local and second-order max-entropy approximants

Fatemeh AMIRI

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 2,   Pages 406-416 doi: 10.1007/s11709-018-0475-5

Abstract: surface energy functional based on phase-field method with smooth local maximum entropy (LME) and second-orderThe higher-order continuity of the meshfree methods such as LME and SME approximants allows to directlysolve the fourth-order phase-field equations without splitting the fourth-order differential equationinto two second-order differential equations.The proposed meshfree fourth-order phase-field formulation show more stable results for SME compared

Keywords： second-order maximum entropy     local maximum entropy     second- and fourth-order phase-field models     B-spline    

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High-order moment methods for LRFD including random variables with unknown probability distributions

Zhao-Hui LU, Yan-Gang ZHAO, Zhi-Wu YU

Frontiers of Structural and Civil Engineering 2013, Volume 7, Issue 3,   Pages 288-295 doi: 10.1007/s11709-013-0210-1

Abstract: In this paper, the high-order moment methods for LRFD including random variables with unknown probabilityneither the iterative computation of derivatives nor any design points; 3) In the applicable range of the high-orderand resistance factors obtained by the proposed method may be different from those obtained by first order

Keywords： high-order moment methods     applicable range     load and resistance factors     target mean resistance    

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Uncertainty propagation analysis by an extended sparse grid technique

X. Y. JIA, C. JIANG, C. M. FU, B. Y. NI, C. S. WANG, M. H. PING

Frontiers of Mechanical Engineering 2019, Volume 14, Issue 1,   Pages 33-46 doi: 10.1007/s11465-018-0514-x

Abstract: sparse grid technique and maximum entropy principle, aiming at improving the solving accuracy of the high-orderFurthermore, based on the maximum entropy principle, the obtained first four-order statistical moments

Keywords： extended sparse grid     maximum entropy principle     extended Gauss integration     Rosenblatt transformation     high-order    

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Adaptive tracking control of high-order MIMO nonlinear systems with prescribed performance Research Articles

Xuerao Wang, Qingling Wang, Changyin Sun,wangxuerao@seu.edu.cn,qlwang@seu.edu.cn,cysun@seu.edu.cn

Frontiers of Information Technology & Electronic Engineering 2021, Volume 22, Issue 7,   Pages 986-1001 doi: 10.1631/FITEE.2000145

Abstract: To guarantee the , an error transformation is applied to transfer the time-varying constraints into aalgorithm, all the closed-loop signals are bounded, and the tracking errors satisfy the predefined time-varying

Keywords： 自适应跟踪控制；预设性能；输入饱和；干扰观测器；神经网络    

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Uncertainty propagation in dynamics of composite plates: A semi-analytical non-sampling-based approach

Mahdi FAKOOR, Hadi PARVIZ

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 6,   Pages 1359-1371 doi: 10.1007/s11709-020-0658-8

Abstract: In this study, the influences of spatially varying stochastic properties on free vibration analysis ofGaussian fields with first-order Markov kernels were utilized to define the aforementioned material propertiesA first-order shear deformation theory was assumed, following which the displacement field was definedthe uncertainty of material properties was investigated, and the results indicated that the higher-ordermodes are more sensitive to uncertainty propagation in spatially varying properties.

Keywords： composite plate     spatially varying stochastic properties     Galerkin method     polynomial chaos approach     semi-analytical    

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High Order Differential Feedback Control for Nonlinear Systems

Qi Guoyuan,Chen Zengqiang,Yuan Zhuzhi

Strategic Study of CAE 2003, Volume 5, Issue 8,   Pages 35-44

Abstract:

This article presents high differential feedback control idea that does not rely on the model of thethe given reference input and its differential and high order differentials.Based on the idea, the high order differentiator (HOD) that is well able to extract differential andhigh order differentials of measured signals is designed.Furthermore, is designed, high order differential feedback adaptive controllers (HODFC) for unknown model

Keywords： high order differentiator     high differential feedback controller     stability     robustness     decoupling control    

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On the Order Reduction of Dynamics Models of Flexible Spacecrafts

Miao Bingqi,Qu Guangji,Xia Suiqin,Cheng Daosheng

Strategic Study of CAE 2001, Volume 3, Issue 11,   Pages 60-64

Abstract:

The usual mode sets for the dynamics modeling of flexible spacecraft are reviewed.A tactic for using the order reduction criterions for the dynamics modeling is introduced.results with different mode sets and to illustrate how to use the mode reduction criterions for the dynamics

Keywords： spacecraft     flexible bodies     dynamics     reduction of models    

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Dynamics of a neuron exposed to integer- and fractional-order discontinuous externalmagnetic flux Regular Papers

Karthikeyan RAJAGOPAL, Fahimeh NAZARIMEHR, Anitha KARTHIKEYAN, Ahmed ALSAEDI, Tasawar HAYAT, Viet-Thanh PHAM

Frontiers of Information Technology & Electronic Engineering 2019, Volume 20, Issue 4,   Pages 584-590 doi: 10.1631/FITEE.1800389

Abstract: Based on this model, an integerorder MFNN system (case A) and a fractional-order MFNN system (case B)Indeed, a fractional-order setting can be acceptable for non-uniform diffusion.In the case of an MFNN system with integer-order discontinuous magnetic flux, the system has chaoticSuch a behavior has not been studied previously in the dynamics of neurons.In an MFNN system with fractional-order discontinuous magnetic flux, different attractors such as chaotic

Keywords： Fitzhugh-Nagumo     Chaos     Fractional order     Magnetic flux    

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Computational fluid dynamics applied to high temperature hydrogen separation membranes

Guozhao JI, Guoxiong WANG, Kamel HOOMAN, Suresh BHATIA, Jo?o C. DINIZ da COSTA

Frontiers of Chemical Science and Engineering 2012, Volume 6, Issue 1,   Pages 3-12 doi: 10.1007/s11705-011-1161-5

Abstract: This work reviews the development of computational fluid dynamics (CFD) modeling for hydrogen separation, with a focus on high temperature membranes to address industrial requirements in terms of membranemembrane used, as different membrane materials comply with different transport mechanisms, in addition to varying

Keywords： membrane     gas separation     computational fluid dynamics     concentration polarization     hydrogen    

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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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Microbial community dynamics at high organic loading rates revealed by pyrosequencing during sugar refinery

Liguo Zhang, Qiaoying Ban, Jianzheng Li

Frontiers of Environmental Science & Engineering 2018, Volume 12, Issue 4, doi: 10.1007/s11783-018-1045-8

Abstract:

High strength sugar refinery wastewater was treated in a mesophilic/listitem>

Hydrogen-producing acotogens and methanogens mainly coped with high

Keywords： Upflow anaerobic sludge blanket     Sugar refinery wastewater     Organic loading rate     Pyrosequencing     Microbial community structure    

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

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Multiscale RBF-based central high resolution schemes for simulation of generalized thermoelasticity problems

Hassan YOUSEFI, Alireza TAGHAVI KANI, Iradj MAHMOUDZADEH KANI

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 2,   Pages 429-455 doi: 10.1007/s11709-018-0483-5

Abstract: study, average-interpolating radial basis functions (RBFs) are successfully integrated with central high-resolutionschemes to achieve a higher-order central method.In the central high resolution formulation, RBFs lead to a reconstruction with the optimum recovery withthe adaptive RBF-based formulation is compared with that of the adaptive Kurganov-Tadmor (KT) second-ordercentral high-resolution scheme with the total variation diminishing (TVD) property.

Keywords： central high resolution schemes     RBFs     higher order accuracy     generalized thermoelasticity     multiresolution-based    

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Title Author Date Type Operation

An Intelligent Non-Collocated Control Strategy for Ball-Screw Feed Drives with Dynamic Variations

Hui Liu, Jun Zhang, Wanhua Zhao

Journal Article

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

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

Journal Article

High-order phase-field model with the local and second-order max-entropy approximants

Fatemeh AMIRI

Journal Article

High-order moment methods for LRFD including random variables with unknown probability distributions

Zhao-Hui LU, Yan-Gang ZHAO, Zhi-Wu YU

Journal Article

Uncertainty propagation analysis by an extended sparse grid technique

X. Y. JIA, C. JIANG, C. M. FU, B. Y. NI, C. S. WANG, M. H. PING

Journal Article

Adaptive tracking control of high-order MIMO nonlinear systems with prescribed performance

Xuerao Wang, Qingling Wang, Changyin Sun,wangxuerao@seu.edu.cn,qlwang@seu.edu.cn,cysun@seu.edu.cn

Journal Article

Uncertainty propagation in dynamics of composite plates: A semi-analytical non-sampling-based approach

Mahdi FAKOOR, Hadi PARVIZ

Journal Article

High Order Differential Feedback Control for Nonlinear Systems

Qi Guoyuan,Chen Zengqiang,Yuan Zhuzhi

Journal Article

On the Order Reduction of Dynamics Models of Flexible Spacecrafts

Miao Bingqi,Qu Guangji,Xia Suiqin,Cheng Daosheng

Journal Article

Dynamics of a neuron exposed to integer- and fractional-order discontinuous externalmagnetic flux

Karthikeyan RAJAGOPAL, Fahimeh NAZARIMEHR, Anitha KARTHIKEYAN, Ahmed ALSAEDI, Tasawar HAYAT, Viet-Thanh PHAM

Journal Article

Computational fluid dynamics applied to high temperature hydrogen separation membranes

Guozhao JI, Guoxiong WANG, Kamel HOOMAN, Suresh BHATIA, Jo?o C. DINIZ da COSTA

Journal Article

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

Journal Article

Microbial community dynamics at high organic loading rates revealed by pyrosequencing during sugar refinery

Liguo Zhang, Qiaoying Ban, Jianzheng Li

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

Multiscale RBF-based central high resolution schemes for simulation of generalized thermoelasticity problems

Hassan YOUSEFI, Alireza TAGHAVI KANI, Iradj MAHMOUDZADEH KANI

Journal Article