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Power quality improvement using fuzzy logic controller for five-level shunt active power filter under distorted voltage conditions

Amar BENAISSA,Boualaga RABHI,Ammar MOUSSI

Frontiers in Energy 2014, Volume 8, Issue 2,   Pages 212-220 doi: 10.1007/s11708-013-0284-4

Abstract: The APF control strategy is based on the use of self-tuning filters (STF) for reference current generationThe use of STF instead of classical extraction filters allows extracting directly the voltage and current

Keywords： active power filter (APF)     harmonics isolator     distorted voltage conditions     self-tuning filters (STF)     fuzzy    

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Study on Temperature Control of Trace ContaminantControl Subassembly in Manned Spacecraft

Pang Liping,Wang Jun

Strategic Study of CAE 2007, Volume 9, Issue 4,   Pages 60-63

Abstract: Temperature control in COA via a new self-tuning fuzzy logical controller (FLC)is analyzed in this paperThe new tuning method applies the bang-bang on-line tuned method to the design of the self-tuning FLCThen the proposed self-tuning FLC is realized by combining the scaling factors and the normal look-upIt can realize self-tuning parameters,  and simplify the design.Simulation results show that the proposed self-tuning FLC is fit for controlling the temperature of COA

Keywords： manned spacecraft     catalytic oxidizer     temperature control     fuzzy control     self-tuning    

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Fine-tuning cell organelle dynamics during mitosis by small GTPases

Frontiers of Medicine 2022, Volume 16, Issue 3,   Pages 339-357 doi: 10.1007/s11684-022-0926-1

Abstract: During mitosis, the allocation of genetic material concurs with organelle transformation and distribution. The coordination of genetic material inheritance with organelle dynamics directs accurate mitotic progression, cell fate determination, and organismal homeostasis. Small GTPases belonging to the Ras superfamily regulate various cell organelles during division. Being the key regulators of membrane dynamics, the dysregulation of small GTPases is widely associated with cell organelle disruption in neoplastic and non-neoplastic diseases, such as cancer and Alzheimer’s disease. Recent discoveries shed light on the molecular properties of small GTPases as sophisticated modulators of a remarkably complex and perfect adaptors for rapid structure reformation. This review collects current knowledge on small GTPases in the regulation of cell organelles during mitosis and highlights the mediator role of small GTPase in transducing cell cycle signaling to organelle dynamics during mitosis.

Keywords： small GTPase     cell organelle     mitosis    

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Variable identification and automatic tuning of the main module of a servo system of parallel mechanism

YANG Zhiyong, XU Meng, HUANG Tian, NI Yanbing

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 1,   Pages 82-88 doi: 10.1007/s11465-007-0014-x

Abstract: The variables of the main module of a servo system for miniature reconfigurable parallel mechanism were identified and automatically tuned. With the reverse solution module of the translation, the module with the exerted translation joint was obtained, which included the location, velocity and acceleration of the parallelogram carriage-branch. The rigid dynamic reverse model was set as the virtual work principle. To identify the variables of the servo system, the triangle-shaped input signal with variable frequency was adopted to overcome the disadvantages of the pseudo-random number sequence, i.e., making the change of the vibration amplitude of the motor dramatically, easily impact the servo motor and make the velocity loop open and so on. Moreover, all the variables including the rotary inertia of the servo system were identified by the additive mass. The overshoot and rise time were the optimum goals, the limited changing load with the attitude was considered, and the range of the controller variables in the servo system was identified. The results of the experiments prove that the method is accurate.

Keywords： acceleration     reconfigurable parallel     additive     sequence     parallel mechanism    

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Task-space position/attitude tracking control of FAST fine tuning system

QI Lin, ZHANG Hui, DUAN Guanghong

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 4,   Pages 392-399 doi: 10.1007/s11465-008-0056-8

Abstract: This paper addresses the task-space position/attitude tracking control of a suspended parallel robot, which is being developed in the framework of a five-hundred meter aperture spherical radio telescope (FAST) project. Based on the quaternion algebra, a novel model-independent task-space PD controller that ensures end-effector position and attitude tracking is presented. The simulation and experimental results show that the new controller has better control effects than the traditional joint-space controller.

Keywords： telescope     five-hundred     end-effector     controller     simulation    

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Evaluate HAA removal in biologically active carbon filters using the ICR database

Hsin-hsin TUNG, Yuefeng F. XIE

Frontiers of Environmental Science & Engineering 2011, Volume 5, Issue 4,   Pages 489-496 doi: 10.1007/s11783-011-0312-8

Abstract: The effects of biologically active carbon (BAC) filtration on haloacetic acid (HAA) levels in plant effluents and distribution systems were investigated using the United States Environmental Protection Agency’s Information Collection Rule (ICR) database. The results showed that average HAA5 concentrations in all locations were 20.4 μg·L and 29.6 μg·L in ICR plants with granular activated carbon (GAC) and ICR plants without GAC process, respectively. For plants without GAC, the highest HAA levels were observed in the quarters of April to June and July to September. However, for plants with GAC, the highest HAA levels were observed in the quarters of April to June and January to March. This HAA level profile inversely correlated well with water temperature, or biologic activity. For GAC plants, simulated distribution samples matched well with distribution system equivalent samples for Cl AA and THMs. For plants with and without GAC, simulated distribution samples overestimated readily biodegradable HAAs in distribution systems. The study indicated that through HAA biodegradation, GAC process plays an important role in lowering HAA levels in finished drinking water.

Keywords： biologically active carbon (BAC)     disinfection byproduct (DBP)     granular activated carbon (GAC)     haloacetic acid (HAA)     Information Collection Rule (ICR)    

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Isolating higher yielding and more stable rice genotypes in stress environments: fine-tuning a selection

Frontiers of Agricultural Science and Engineering doi: 10.15302/J-FASE-2023521

Abstract:

● Score index methods readily discriminate genotypes adapted to a target environment.

Keywords： Aerobic rice     breeding selection     drought resilience     production capacity index     resilience capacity index     stress score index     upland    

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Impacts of backwashing on micropollutant removal and associated microbial assembly processes in sand filters

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 3, doi: 10.1007/s11783-023-1634-z

Abstract:

● Backwashing in sand filters with 2-h and 4-h EBCTs was simulated

Keywords： Sand filter     Backwashing     Recovery     Micropollutants     Community composition    

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Exploring self-organization and self-adaption for smart manufacturing complex networks

Frontiers of Engineering Management 2023, Volume 10, Issue 2,   Pages 206-222 doi: 10.1007/s42524-022-0225-1

Abstract: In this context, this paper investigates the mechanisms and methodology of self-organization and self-adaptionSubsequently, analytical target cascading is used to formulate the processes of self-organizing optimalconfiguration and self-adaptive collaborative control for multilevel key manufacturing resources whilework potentially enables managers and practitioners to implement active perception, active response, self-organization, and self-adaption solutions in discrete manufacturing enterprises.

Keywords： cyber–physical systems     Industrial Internet of Things     smart manufacturing complex networks     self-organizationand self-adaption     analytical target cascading     collaborative optimization    

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Asymmetric discriminative correlation filters for visual tracking

Shui-wang Li, Qian-bo Jiang, Qi-jun Zhao, Li Lu, Zi-liang Feng,lishuiwang0721@163.com,jqianbo@163.com,qjzhao@scu.edu.cn,luli@scu.edu.cn,fengziliang@scu.edu.cn

Frontiers of Information Technology & Electronic Engineering 2020, Volume 21, Issue 10,   Pages 1413-1534 doi: 10.1631/FITEE.1900507

Abstract: Discriminative correlation filters (DCF) are efficient in and have advanced the field significantly.
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Tuning the catalytic selectivity in electrochemical CO

Jiafang XIE,Yuxi HUANG,Hanqing YU

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 5,   Pages 861-866 doi: 10.1007/s11783-014-0742-1

Abstract: By tuning the electrochemical parameters, either Cu oxide nanowires or nanoneedles were fabricated and

Keywords： electrochemical CO2 reduction     Cu oxide     nanostructure     selectivity     hydrocarbon formation    

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GaAlAs/GaAs Planar Waveguide Filters Based on Cascade Rectangular Resonators

Cai Chun,Liu Xu,Xiao Jinbiao,Ma Changfeng,Chen Lin,Ding Dong,Zhang Mingde,Sun Xiaohan,Xu Xiaole,Chen Tangsheng,Li Fuxiao

Strategic Study of CAE 2004, Volume 6, Issue 2,   Pages 61-66

Abstract: on the electromagnetic model for four-port resonant filter, the optical characteristics of several filters

Keywords： WDM     planar lightwave circuits     optical filters     resonator     FDTD    

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Tuning nitrogen defects and doping sulfur in carbon nitride for enhanced visible light photocatalytic

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 1,   Pages 93-101 doi: 10.1007/s11705-022-2175-x

Abstract: Defect construction and heteroatom doping are effective strategies for improving photocatalytic activity of carbon nitride (g-C3N4). In this work, N defects were successfully prepared via cold plasma. High-energy electrons generated by plasma can produce N defects and embed sulfur atoms into g-C3N4. The N defects obviously promoted photocatalytic degradation performance that was 7.5 times higher than that of pure g-C3N4. The concentration of N defects can be tuned by different power and time of plasma. With the increase in N defects, the photocatalytic activity showed a volcanic trend. The g-C3N4 with moderate concentration of N defects exhibited the highest photocatalytic activity. S-doped g-C3N4 exhibited 11.25 times higher photocatalytic activity than pure g-C3N4. It provided extra active sites for photocatalytic reaction and improved stability of N defects. The N vacancy-enriched and S-doped g-C3N4 are beneficial for widening absorption edge and improving the separation efficiency of electron and holes.

Keywords： g-C3N4     nitrogen defect     sulfur doping     photodegradation     plasma    

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Emerging trends in self-healable nanomaterials for triboelectric nanogenerators: A comprehensive review

Frontiers in Energy   Pages 727-750 doi: 10.1007/s11708-023-0896-2

Abstract: A thorough analysis of triboelectric nanogenerators (TENGs) that make use of self-healable nanomaterialsTENGs, on the other hand, provide unique opportunities for future self-powered systems and might encourageExamining the many approaches used to improve nanogenerators by employing materials with shape memory and self-healableAdditionally, the cost-effectiveness, social acceptability, and regulatory implications of self-healing

Keywords： triboelectric nanogenerator (TENG)     self-healable nanomaterials     self-powered devices     energy    

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Modular structure of a self-reconfigurable robot

FEI Yanqiong, DONG Qinglei, ZHAO Xifang

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 1,   Pages 116-119 doi: 10.1007/s11465-007-0020-z

Abstract: This paper proposes a novel, hermaphroditic, and lattice self-reconfigurable modular robot.

Keywords： compact     self-reconfigurable modular     hermaphroditic     cone-shaped     clutch    

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Title Author Date Type Operation

Power quality improvement using fuzzy logic controller for five-level shunt active power filter under distorted voltage conditions

Amar BENAISSA,Boualaga RABHI,Ammar MOUSSI

Journal Article

Study on Temperature Control of Trace ContaminantControl Subassembly in Manned Spacecraft

Pang Liping,Wang Jun

Journal Article

Fine-tuning cell organelle dynamics during mitosis by small GTPases

Journal Article

Variable identification and automatic tuning of the main module of a servo system of parallel mechanism

YANG Zhiyong, XU Meng, HUANG Tian, NI Yanbing

Journal Article

Task-space position/attitude tracking control of FAST fine tuning system

QI Lin, ZHANG Hui, DUAN Guanghong

Journal Article

Evaluate HAA removal in biologically active carbon filters using the ICR database

Hsin-hsin TUNG, Yuefeng F. XIE

Journal Article

Isolating higher yielding and more stable rice genotypes in stress environments: fine-tuning a selection

Journal Article

Impacts of backwashing on micropollutant removal and associated microbial assembly processes in sand filters

Journal Article

Exploring self-organization and self-adaption for smart manufacturing complex networks

Journal Article

Asymmetric discriminative correlation filters for visual tracking

Shui-wang Li, Qian-bo Jiang, Qi-jun Zhao, Li Lu, Zi-liang Feng,lishuiwang0721@163.com,jqianbo@163.com,qjzhao@scu.edu.cn,luli@scu.edu.cn,fengziliang@scu.edu.cn

Journal Article

Tuning the catalytic selectivity in electrochemical CO

Jiafang XIE,Yuxi HUANG,Hanqing YU

Journal Article

GaAlAs/GaAs Planar Waveguide Filters Based on Cascade Rectangular Resonators

Cai Chun,Liu Xu,Xiao Jinbiao,Ma Changfeng,Chen Lin,Ding Dong,Zhang Mingde,Sun Xiaohan,Xu Xiaole,Chen Tangsheng,Li Fuxiao

Journal Article

Tuning nitrogen defects and doping sulfur in carbon nitride for enhanced visible light photocatalytic

Journal Article

Emerging trends in self-healable nanomaterials for triboelectric nanogenerators: A comprehensive review

Journal Article

Modular structure of a self-reconfigurable robot

FEI Yanqiong, DONG Qinglei, ZHAO Xifang

Journal Article