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Robust switched fractional controller for performance improvement of single phase active power filter under unbalanced conditions

H. AFGHOUL,F. KRIM,D. CHIKOUCHE,A. BEDDAR

Frontiers in Energy 2016, Volume 10, Issue 2, Pages 203-212 doi: 10.1007/s11708-015-0381-7

Abstract: but it causes dramatic degradation in control performances in steady-state because of the fractional calculus

Keywords： conventional PI controller fractional calculus (FC) total harmonic distortion (THD) Oustaloup continuous

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Stability analysis of slopes with planar failure using variational calculus and numerical methods

Norly BELANDRIA, Roberto ÚCAR, Francisco M. LEÓN, Ferri HASSANI

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 5, Pages 1262-1273 doi: 10.1007/s11709-020-0657-9

Abstract: This study investigates the technique of variational calculus applied to estimate the slope stability

Keywords： slopes stability planar failure variational calculus numerical methods

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Proteomics study of Mycoplasma pneumoniae pneumonia reveals the Fc fragment of the IgG-binding protein

Frontiers of Medicine 2022, Volume 16, Issue 3, Pages 378-388 doi: 10.1007/s11684-021-0840-y

Abstract: The Fc fragment of the IgG-binding protein (FCGBP) was identified as the most promising indicator of

Keywords： severe Mycoplasma pneumoniae pneumonia children proteomics Fc fragment of the IgG-binding protein

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Modeling and Real-time Performance Analysis of Switched Ethernet by Network Calculus

Wang Xiaoxin,Liu Luyuan,Liu Jing,Ma Jinjue

Strategic Study of CAE 2006, Volume 8, Issue 6, Pages 55-59

Abstract: Through analyzing the structure of classical switch, a switch model by network calculus is proposed,

Keywords： network calculus switch arrival curve service curve delay

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PASS - BDI Model for Software Agent

Fan Wei,Chen Zengqiang,Yuan Zhuzhi

Strategic Study of CAE 2004, Volume 6, Issue 6, Pages 43-49

Abstract: model named as PASS-BDI, describes the mental states, cognitive processes and whole behaviors with pi-calculus

Keywords： agent pi-calculus cognitive processes mental state

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Research Progress in Proton Exchange Membrane Fuel Cell

Ren Xueyou

Strategic Study of CAE 2005, Volume 7, Issue 1, Pages 86-94

Abstract:

The developing status and research progress of PEMFC at home and abroad were outlined in the paper. Simultaneously, hydrogen storage technique, and some key technique including PEM, bipolar board, membrane electrode and electrocatalyst,as well as their pplication and future outlook are described.

Keywords： FC PEM bipolar board membrane electrode electrocatalyst developing status

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Treatment technologies for aqueous perfluorooctanesulfonate (PFOS) and perfluorooctanoate (PFOA)

Chad D. VECITIS, Hyunwoong PARK, Jie CHENG, Brian T. MADER, Michael R. HOFFMANN

Frontiers of Environmental Science & Engineering 2009, Volume 3, Issue 2, Pages 129-151 doi: 10.1007/s11783-009-0022-7

Abstract: of the concentrated waste is required for complete FC destruction.Recently, a number of alternative technologies for FC decomposition have been reported.The FC degradation technologies span a wide range of chemical processes including direct photolysis,This paper reviews these FC degradation technologies in terms of kinetics, mechanism, energetic cost,The optimal PFOS/PFOA treatment method is strongly dependent upon the FC concentration, background organic

Keywords： fluorochemical (FC) degradation technologies perfluoroctanesulfonate (PFOS) perfluorooctanoate (PFOA)

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Hohmann transfer via constrained optimization None

Li XIE, Yi-qun ZHANG, Jun-yan XU

Frontiers of Information Technology & Electronic Engineering 2018, Volume 19, Issue 11, Pages 1444-1458 doi: 10.1631/FITEE.1800295

Abstract: We next formulate the Hohmann transfer problem as boundary value problems, which are solved by the calculus

Keywords： Hohmann transfer Nonlinear programming Constrained optimization Calculus of variations

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Design of a fractional PI None

Pritesh SHAH, Sudhir AGASHE, Anand J. KULKARNI

Frontiers of Information Technology & Electronic Engineering 2018, Volume 19, Issue 3, Pages 437-445 doi: 10.1631/FITEE.1601495

Abstract: The cohort intelligence (CI) method has recently evolved as an optimization method based on artificial intelligence. We use the CI method for the first time to optimize the parameters of the fractional proportionalintegral-derivative (PID) controller. The performance of the CI method in designing the fractional PID controller was validated and compared with those of some other popular algorithms such as particle swarm optimization, the genetic algorithm, and the improved electromagnetic algorithm. The CI method yielded improved solutions in terms of the cost function, computing time, and function evaluations in comparison with the other three algorithms. In addition, the standard deviations of the CI method demonstrated the robustness of the proposed algorithm in solving control problems.

Keywords： Cohort intelligence Fractional calculus Fractional PID controller Tuning

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Fractional order extremum seeking approach for maximum power point tracking of photovoltaic panels

Ammar NEÇAIBIA,Samir LADACI,Abdelfatah CHAREF,Jean Jacques LOISEAU

Frontiers in Energy 2015, Volume 9, Issue 1, Pages 43-53 doi: 10.1007/s11708-014-0343-5

Abstract: Due to the high interest in renewable energy and diversity of research regarding photovoltaic (PV) array, a great research effort is focusing nowadays on solar power generation and its performance improvement under various weather conditions. In this paper, an integrated framework was proposed, which achieved both maximum power point tracking (MPPT) and minimum ripple signals. The proposed control scheme was based on extremum-seeking (ES) combined with fractional order systems (FOS). This auto-tuning strategy was developed to maximize the PV panel output power through the regulation of the voltage input to the DC/DC converter in order to lead the PV system steady-state to a stable oscillation behavior around the maximum power point (MPP). It is shown that fractional order operators can improve the plant dynamics with respect to time response and disturbance rejection. The effectiveness of the proposed controller scheme is illustrated with simulations using measured solar radiation data.

Keywords： extremum seeking (ES) fractional order control (FOC) fractional calculus photovoltaic (PV) panel maximum