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Dynamic Target Tracking of Unmanned Aerial Vehicles Under Unpredictable Disturbances

Yanjie Chen,Yangning Wu,Limin Lan,Hang Zhong,Zhiqiang Miao,Hui Zhang,Yaonan Wang,

Engineering doi: 10.1016/j.eng.2023.05.017

Abstract: This study proposes an image-based visual servoing (IBVS) method based on a velocity observer for anThe relative velocities of the UAV and the dynamic target are estimated using the proposed velocity observerThanks to the velocity observer, translational velocity measurements are not required, and the controlThe stability of the velocity observer and IBVS controller is analyzed using the Lyapunov method.

Keywords： Unmanned aerial vehicle     Visual servoing     Velocity observer     Target tracking    

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Prediction of the shear wave velocity

Amoroso SARA

Frontiers of Structural and Civil Engineering 2014, Volume 8, Issue 1,   Pages 83-92 doi: 10.1007/s11709-013-0234-6

Abstract: The paper examines the correlations to obtain rough estimates of the shear wave velocity from non-seismic

Keywords： horizontal stress index     shear wave velocity     flat dilatometer test     cone penetration test    

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High velocity impact of metal sphere on thin metallic plate using smooth particle hydrodynamics (SPH)

Hossein ASADI KALAMEH, Arash KARAMALI, Cosmin ANITESCU, Timon RABCZUK

Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 2,   Pages 101-110 doi: 10.1007/s11709-012-0160-z

Abstract: The modeling of high velocity impact is an important topic in impact engineering.The goal is to study the most sensitive input parameters (impact velocity and plate thickness) on the

Keywords： smoothed particle hydrodynamics     high velocity impact     sensitivity analysis    

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Experimental study on velocity characteristics of recirculation zone in humid air non-premixed flame

GU Xin, ZANG Shusheng, GE Bing

Frontiers in Energy 2008, Volume 2, Issue 2,   Pages 140-144 doi: 10.1007/s11708-008-0037-y

Abstract: examine the effect of the flow field within the recirculation zone on flame structure, the characteristic velocitydistance of the two stagnation points in humid air combustion shortens, and the minimal dimensionless velocityanalysis of axial minimal velocities on the centerline and their positions under different co-flow air velocityconditions reveals that fuel-to-air velocity ratio is the crucial parameter that governs humid air combustion

Keywords： distance     bluff-body     fuel-to-air velocity     stagnation     parameter    

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definition of metabolic dysfunction-associated fatty liver disease with elevated brachial-ankle pulse wave velocity

Frontiers of Medicine 2022, Volume 16, Issue 5,   Pages 714-722 doi: 10.1007/s11684-021-0888-8

Abstract: non-alcoholic fatty liver disease (NAFLD), with the progression of elevated brachial-ankle pulse wave velocity

Keywords： dysfunction-associated fatty liver disease     non-alcoholic fatty liver disease     fibrosis score     brachial-ankle pulse wave velocity    

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Assessment of a fuzzy logic based MRAS observer used in a photovoltaic array supplied AC drive

Bhavnesh KUMAR, Yogesh K CHAUHAN, Vivek SHRIVASTAVA

Frontiers in Energy 2014, Volume 8, Issue 1,   Pages 81-89 doi: 10.1007/s11708-014-0295-9

Abstract: In this paper a fuzzy logic (FL) based model reference adaptive system (MRAS) speed observer for high

Keywords： induction motor drive     fuzzy logic (FL) control     model reference adaptive system (MRAS)     photovoltaic (PV) array     vector control    

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Observer-based control for fractional-order singular systems with order Research Article

Bingxin LI, Xiangfei ZHAO, Xuefeng ZHANG, Xin ZHAO

Frontiers of Information Technology & Electronic Engineering 2022, Volume 23, Issue 12,   Pages 1862-1870 doi: 10.1631/FITEE.2200294

Abstract: In this paper, for fractional-order with order (0<<1) and is studied. On the basis of the Smith predictor and approximation error, the system with is approximately equivalent to the system without . Furthermore, based on the (LMI) technique, the necessary and sufficient condition of is proposed. Since the condition is a nonstrict LMI, including the equality constraint, it will lead to some trouble when solving problems using toolbox. Thus, the strict LMI-based condition is improved in the paper. Finally, a numerical example and a direct current motor example are given to illustrate the effectiveness of the strict LMI-based condition.

Keywords： Observer-based control     Singular systems     Fractional order     Input delay     Linear matrix inequality    

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Observer design for induction motor: an approach based on the mean value theorem

Mohamed Yacine HAMMOUDI,Abdelkarim ALLAG,Mohamed BECHERIF,Mohamed BENBOUZID,Hamza ALLOUI

Frontiers in Energy 2014, Volume 8, Issue 4,   Pages 426-433 doi: 10.1007/s11708-014-0314-x

Abstract: In this paper, observer design for an induction motor has been investigated.The peculiarity of this paper is the synthesis of a mono-Luenberger observer for highly coupled systemThe proposed observer guarantees the global exponential convergence to zero of the estimation error.Finally, the simulation results are given to show the performance of the observer design.

Keywords： observer design     differential mean value theorem (DMVT)     sector nonlinearity transformation     linear matrix    

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Theoretical study of failure in composite pressure vessels subjected to low-velocity impact and internal

Roham RAFIEE, Hossein RASHEDI, Shiva REZAEE

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 6,   Pages 1349-1358 doi: 10.1007/s11709-020-0650-3

Abstract: research for predicting the failure in internally pressurized composite pressure vessels exposed to low-velocitythis purpose, layer-wise theory is employed in a composite cylinder under internal pressure and low-velocity

Keywords： composite pressure vessel     low-velocity impact     failure     theoretical solution     progressive damage modeling    

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Topology optimization of piezoelectric bi-material actuators with velocity feedback control

Mariana MORETTI, Emílio C. N. SILVA

Frontiers of Mechanical Engineering 2019, Volume 14, Issue 2,   Pages 190-200 doi: 10.1007/s11465-019-0537-y

Abstract: by two piezo-ceramic layers that act as a sensor and an actuator coupled with a constant gain active velocityAVFC, provided by the piezoelectric layers, affects the structural damping of the system through the velocity

Keywords： topology optimization method     bi-material piezoactuator     active velocity feedback control     time-domain transient    

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seismic liquefaction and performing parametric sensitivity analysis: Considering cumulative absolute velocity

Nima PIRHADI, Xiaowei TANG, Qing YANG, Afshin ASADI, Hazem Samih MOHAMED

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 2,   Pages 506-519 doi: 10.1007/s11709-021-0677-0

Abstract: Among all earthquake parameters, the standardized cumulative absolute velocity ( ) exhibits the largest

Keywords： lateral spreading displacement     cumulative absolute velocity     fine content     artificial neural network     sensitivity    

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Several Theoretical Problems in Faster-than-Light Research

Huang Zhixun,Geng Tianming

Strategic Study of CAE 2007, Volume 9, Issue 4,   Pages 6-17

Abstract: style="text-align: justify;">In the early stage of the universe, during the hadronic era, the light velocityThis implies that light velocity has been decreasing in time slowly, from v down to the present valueThis paper also discusses some problems of faster-than-light research profoundly, such as the velocitydefinition of the microscopic particles, the velocity of gravitation, the interaction speed of the quantum-entangle-state

Keywords： variable light velocity     faster-than-light     velocity of microscopic particles     velocity ofgravitation     interaction    

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Polynomial robust observer implementation based passive synchronization of nonlinear fractional-order

Alain Soup Tewa Kammogne, Michaux Noubé Kountchou, Romanic Kengne, Ahmad Taher Azar, Hilaire Bertrand Fotsin, Soup Teoua Michael Ouagni,kouaneteoua@yahoo.fr,aazar@psu.edu.sa,ahmad.azar@fci.bu.edu.eg

Frontiers of Information Technology & Electronic Engineering 2020, Volume 21, Issue 9,   Pages 1267-1412 doi: 10.1631/FITEE.1900430

Abstract: A robust polynomial observer is designed based on passive synchronization of a given class of r ColpittsThe primary objective of the proposed observer is to minimize the effects of unknown bounded disturbancesmore practicable output-feedback passive controller is proposed using an adaptive polynomial state observerdistributed approach of a continuous frequency of the FOC is considered to analyze the stability of the observer
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Accounting for the uncertainties in the estimation of average shear wave velocity using – correlations

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 5,   Pages 1199-1208 doi: 10.1007/s11709-021-0749-1

Abstract: Shear wave velocity ( V S) is a key parameter in such analysis, although the economyFurther, the average shear wave velocity of the top 30 m soil cover ( V S30) is estimated

Keywords： uncertainties     V S– N correlations     V S30     SPT data     statistical methodology    

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Ballistic behavior of plain and reinforced concrete slabs under high velocity impact

Chahmi OUCIF, Luthfi Muhammad MAULUDIN, Farid Abed

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 2,   Pages 299-310 doi: 10.1007/s11709-019-0588-5

Abstract: This work presents a numerical simulation of ballistic penetration and high velocity impact behavior

Keywords： Johnson-Holmquist-2     Johnson-Cook     reinforced concrete     damage     impact loads    

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Title Author Date Type Operation

Dynamic Target Tracking of Unmanned Aerial Vehicles Under Unpredictable Disturbances

Yanjie Chen,Yangning Wu,Limin Lan,Hang Zhong,Zhiqiang Miao,Hui Zhang,Yaonan Wang,

Journal Article

Prediction of the shear wave velocity

Amoroso SARA

Journal Article

High velocity impact of metal sphere on thin metallic plate using smooth particle hydrodynamics (SPH)

Hossein ASADI KALAMEH, Arash KARAMALI, Cosmin ANITESCU, Timon RABCZUK

Journal Article

Experimental study on velocity characteristics of recirculation zone in humid air non-premixed flame

GU Xin, ZANG Shusheng, GE Bing

Journal Article

definition of metabolic dysfunction-associated fatty liver disease with elevated brachial-ankle pulse wave velocity

Journal Article

Assessment of a fuzzy logic based MRAS observer used in a photovoltaic array supplied AC drive

Bhavnesh KUMAR, Yogesh K CHAUHAN, Vivek SHRIVASTAVA

Journal Article

Observer-based control for fractional-order singular systems with order

Bingxin LI, Xiangfei ZHAO, Xuefeng ZHANG, Xin ZHAO

Journal Article

Observer design for induction motor: an approach based on the mean value theorem

Mohamed Yacine HAMMOUDI,Abdelkarim ALLAG,Mohamed BECHERIF,Mohamed BENBOUZID,Hamza ALLOUI

Journal Article

Theoretical study of failure in composite pressure vessels subjected to low-velocity impact and internal

Roham RAFIEE, Hossein RASHEDI, Shiva REZAEE

Journal Article

Topology optimization of piezoelectric bi-material actuators with velocity feedback control

Mariana MORETTI, Emílio C. N. SILVA

Journal Article

seismic liquefaction and performing parametric sensitivity analysis: Considering cumulative absolute velocity

Nima PIRHADI, Xiaowei TANG, Qing YANG, Afshin ASADI, Hazem Samih MOHAMED

Journal Article

Several Theoretical Problems in Faster-than-Light Research

Huang Zhixun,Geng Tianming

Journal Article

Polynomial robust observer implementation based passive synchronization of nonlinear fractional-order

Alain Soup Tewa Kammogne, Michaux Noubé Kountchou, Romanic Kengne, Ahmad Taher Azar, Hilaire Bertrand Fotsin, Soup Teoua Michael Ouagni,kouaneteoua@yahoo.fr,aazar@psu.edu.sa,ahmad.azar@fci.bu.edu.eg

Journal Article

Accounting for the uncertainties in the estimation of average shear wave velocity using – correlations

Journal Article

Ballistic behavior of plain and reinforced concrete slabs under high velocity impact

Chahmi OUCIF, Luthfi Muhammad MAULUDIN, Farid Abed

Journal Article