期刊文献+
任意字段
题名或关键词
题名
关键词
摘要
作者
第一作者
机构
刊名
分类号
参考文献
作者简介
基金资助
栏目信息
共找到65篇文章
< 1 2 … 4 >
每页显示 20 50 100
已选0条
引用分析
参考文献
引证文献
 统计分析
检索结果
已选文献
显示方式：
Configuration Optimization Design of Magnetic Circuit for Large Magnetostrictive Devices Based on TbDyFe Alloy 认领 引用
1
作者 Jinan Yu Yusheng Wen +10 位作者 Ziwei Feng Yongbo Guo Zhihao Zhang Yu Qiao Yangkun He Shizhong An Dazhuang Kang Tianli Zhang Jinghua Liu Chengbao Jiang J.M.D.Coey 《Rare Metals》 SCIE EI CAS CSCD 2026年第3期236-245,共10页
Reliable operation of high-performance magnetostrictive devices,composed of the giant magnetostrictive material(GMM),that is,the TbDyFe alloy,critically depends on an optimally tailored bias magnetic field.Sufficient ... Reliable operation of high-performance magnetostrictive devices,composed of the giant magnetostrictive material(GMM),that is,the TbDyFe alloy,critically depends on an optimally tailored bias magnetic field.Sufficient intensity and uniformity are essential to induce the ideal initial strain in the GMM,enabling peak reciprocating output.This study develops a novel bias field scheme featuring the permanent magnet(PM)/pure iron(PI)/GMM stack assembly with dedicated thin cylindrical compensating PMs.This design first applies the principle of magnetic refraction to homogenize the magnetic field.By virtue of the refraction of the embedded PI layer at the PM/GMM interface,the magnetic field inhomogeneity within the GMM is reduced by 9%.Furthermore,a streamlined magnetic circuit model—derived from the concept of zero magnetomotive force(MMF)—provides robust support for the comprehensive magnetic leakage analysis.Finally,a large-sized giant magnetostrictive actuator(GMA)with the proposed optimized configuration was fabricated and analyzed.Results demonstrate that this design ultimately reduces magnetic field inhomogeneity from 26.7%to 1.5%while increasing the average magnetic field intensity from 54 to 67 kA m-1,and it can be extended to form devices with a large aspect ratio.This study facilitates the development of highprecision and large-output magnetostrictive devices.Additionally,it provides a generalized design paradigm for magnetic circuit structures in the development of high-performance magnetic devices. 展开更多
关键词 bias magnetic field configuration optimization design magnetostrictive devices TbDyFe alloy
暂未订购 下载PDF
Optimization Configuration Analysis of Wind-Solar-Storage System Based on HOMER 认领 引用
2
作者 Daixuan Zhou Zhichao Wang +2 位作者 Kaile Xi Chong Zuo Yan Jia 《Energy Engineering》 EI 2025年第5期2119-2153,共35页
HOMER(Hybrid OptimizationModel for Electric Renewables)is an effective simulation and optimization platform for hybrid renewable energy.By inputting specific users’energy resource data(such as wind speed,solar radiat... HOMER(Hybrid OptimizationModel for Electric Renewables)is an effective simulation and optimization platform for hybrid renewable energy.By inputting specific users’energy resource data(such as wind speed,solar radiation,etc.)and load data,and by determining the types and models of components selected by the user,HOMER calculates and simulates the operational status of each component at every time step.Ultimately,it computes the energy balance of the system within specified constraints to simulate the overall system operation.This approach enables the reasonable determination of system component capacities,the evaluation of system feasibility,and the calculation of costs over the entire lifecycle of the system.In response to the challenges of matching capacities and high construction costs in wind-solar-storage multi-energy complementary power generation systems,This paper addresses issues such as difficulty in matching component capacities,high construction costs,and low system reliability in multi-energy complementary power generation systems.Using the HOMER hybrid renewable energy simulation and optimization platform,we constructed various hybrid energy systems for a specific region and considered multiple power supply modes.Thesoftware was used to solve for the optimal capacities and costs of each system.Four scenarios were analyzed:grid-only,grid-connected(purchase-sale)wind-solar-storage system,grid-connected(sale)wind-solar-storage system,and off-grid wind-solar-storage system.The results were compared and analyzed.HOMER can assess systemfeasibility and calculate the cost over its entire lifecycle.By inputting 8760 h of wind and solar resource data and load data for a specific region,and considering multiple system structures and power supply modes,the configuration results were evaluated using indicators such as cost and renewable energy utilization ratio.The simulation results indicate that the Net Present Cost(NPC)values across four different scenarios range from 1,877,292 CNY to 3,222,724 CNY,demonstrating significant cost differences.Among these scenarios,the grid-connected(purchase-sell)wind-solarstorage system exhibited the lowest NPC and the highest renewable energy utilization rate.Compared to a system relying solely on the grid,the NPC was reduced by 305,695 CNY,and the renewable energy utilization rate reached 74.7%. 展开更多
关键词 Wind-solar-storage system HOMER software capacity optimization configuration
暂未订购 下载PDF
Analytical Solution of Optimal Geometric Configuration Based on PDOP for DOA FDOA and TDOA 认领 引用
3
作者 Junhua Yang Hao Huan Ran Tao 《Journal of Beijing Institute of Technology》 EI CAS 2025年第6期535-544,共10页
The radar radiation source signals hold extremely high reconnaissance value.Accurately positioning these signals constitutes one of the key technologies in safeguarding the security of the electromagnetic space.The po... The radar radiation source signals hold extremely high reconnaissance value.Accurately positioning these signals constitutes one of the key technologies in safeguarding the security of the electromagnetic space.The positioning error in multi-station scenarios is influenced not only by the accuracy of positioning parameter estimation but also by the geometric configuration of the positioning platform.This paper focuses on the direction of arrival(DOA),frequency difference of arrival(FDOA),and time difference of arrival(TDOA)methods,analyzing the optimal configuration,optimal detection area,and optimal position dilution of precision in both elevation-known and elevation-unknown scenarios.Specifically,the paper constructs a signal receiving model,establishes the corresponding positioning equations,and performs dimensional normalization on these equations to derive measurement values in meters.Through differential processing,the position dilution of precision is obtained,which is then used as the optimization function to determine the optimal configuration,optimal detection area,and optimal position dilution of precision.Simulation results validate the accuracy of the proposed formulas. 展开更多
关键词 optimal geometric configuration analytical solution position dilution of precision direction of arrival(DOA) frequency difference of arrival(FDOA) time difference of arrival(TDOA)
暂未订购 下载PDF
Correction to High-Performance Anion Exchange Membrane Fuel Cells Enabled by Nitrogen Configuration Optimization in Graphene-Coated Nickel for Enhanced Hydrogen Oxidation 认领 引用
4
《Energy & Environmental Materials》 SCIE EI CAS CSCD 2025年第4期296-296,共1页
P.Li,J.Zhong,Y.Fu,Z.Du,L.Jiang,Y.Han,J.Luxa,B.Wu,Z.Sofer,Q.Wei,W.Yang.High-Performance Anion Exchange Membrane Fuel Cells Enabled by Nitrogen Configuration Optimization in Graphene-Coated Nickel for Enhanced Hydrogen ... P.Li,J.Zhong,Y.Fu,Z.Du,L.Jiang,Y.Han,J.Luxa,B.Wu,Z.Sofer,Q.Wei,W.Yang.High-Performance Anion Exchange Membrane Fuel Cells Enabled by Nitrogen Configuration Optimization in Graphene-Coated Nickel for Enhanced Hydrogen Oxidation.Energy Environ.Mater.2024,7,e12716. 展开更多
关键词 enhanced hydrogen oxidation nitrogen configuration optimization anion exchange membrane fuel cells high performance anion exchange membrane fuel cells graphene coated nickel
暂未订购 下载PDF
Optimal observation configuration of UAVs based on angle and range measurements and cooperative target tracking in three-dimensional space 认领 引用 被引量：9
5
作者 SHI Haoran LU Faxing +1 位作者 WANG Hangyu XU Junfei 《Journal of Systems Engineering and Electronics》 SCIE CSCD 2020年第5期996-1008,共13页
This article investigates the optimal observation configuration of unmanned aerial vehicles(UAVs) based on angle and range measurements, and generalizes predecessors' researches in two dimensions into three dimens... This article investigates the optimal observation configuration of unmanned aerial vehicles(UAVs) based on angle and range measurements, and generalizes predecessors' researches in two dimensions into three dimensions. The relative geometry of the UAVs-target will significantly affect the state estimation performance of the target, the cost function based on the Fisher information matrix(FIM) is used to derive the FIM determinant of UAVs' observation in three-dimensional space, and the optimal observation geometric configuration that maximizes the determinant of the FIM is obtained. It is shown that the optimal observation configuration of the UAVs-target is usually not unique, and the optimal observation configuration is proved for two UAVs and three UAVs in three-dimension. The long-range over-the-horizon target tracking is simulated and analyzed based on the analysis of optimal observation configuration for two UAVs. The simulation results show that the theoretical analysis and control algorithm can effectively improve the positioning accuracy of the target. It can provide a helpful reference for the design of over-the-horizon target localization based on UAVs. 展开更多
关键词 target state estimation optimal observation configuration Fisher information matrix(FIM) Cramer-Rao lower bound(CRLB)
暂未订购 下载PDF
Configuration optimization model of multi-energy distributed generation system 认领 引用 被引量：2
6
作者 徐青山 徐敏姣 +1 位作者 李国栋 蒋菱 《Journal of Southeast University(English Edition)》 EI CAS 2017年第2期182-188,共7页
To integrate different renewable energy resources effectively in a microgrid, a configuration optimization model of a multi-energy distributed generation（DG） system and its auxiliary equipment is proposed. The model... To integrate different renewable energy resources effectively in a microgrid, a configuration optimization model of a multi-energy distributed generation（DG） system and its auxiliary equipment is proposed. The model mainly consists of two parts, the determination of initial configuration schemes according to user preference and the selection of the optimal scheme. The comprehensive evaluation index（CEI）, which is acquired through the analytic hierarchy process（AHP） weight calculation method, is adopted as the evaluation criterion to rank the initial schemes. The optimal scheme is obtained according to the ranking results. The proposed model takes the diversity of different equipment parameters and investment cost into consideration and can give relatively suitable and economical suggestions for system configuration.Additionally, unlike Homer Pro, the proposed model considers the complementation of different renewable energy resources, and thus the rationality of the multi-energy DG system is improved compared with the single evaluation criterion method which only considers the total cost. 展开更多
关键词 multi-energy complementation distributed generation（DG） optimal configuration energy management comprehensive evaluation index（CEI） analytic hierarchy process（AHP）
暂未订购 下载PDF
Operation Strategy Analysis and Configuration Optimization of Solar CCHP System 认领 引用 被引量：1
7
作者 Duojin Fan Chengji Shi +1 位作者 Kai Sun Xiaojuan Lu 《Energy Engineering》 EI 2021年第4期1197-1221,共25页
This paper proposed a new type of combined cooling heating and power(CCHP)system,including the parabolic trough solar thermal(PTST)power generation and gas turbine power generation.The thermal energy storage subsystem... This paper proposed a new type of combined cooling heating and power(CCHP)system,including the parabolic trough solar thermal(PTST)power generation and gas turbine power generation.The thermal energy storage subsystem in the PTST unit provides both thermal energy and electrical energy.Based on the life cycle method,the configuration optimization under eight operation strategies is studied with the economy,energy,and environment indicators.The eight operation strategies include FEL,FEL-EC,FEL-TES,FEL-TES&EC,FTL,FTL-EC,FTL-TES,and FTL-TES&EC.The feasibility of each strategy is verified by taking a residential building cluster as an example.The indicators under the optimal configuration of each strategy are compared with that of the separate production(SP)system.The results showed that the PTST-CCHP system improves the environment and energy performance by changing the ratio of thermal energy and electric energy.The environment and energy indicators of FEL-TES&EC are superior to those of FTL-TES&EC in summer,and the results are just the opposite in winter.The initial annual investment of the PTST-CCHP system is higher than that of the SP system,but its economic performance is better than that of the SP system with the increase of life-cycle. 展开更多
关键词 Combined cooling heating and power(CCHP)system trough solar thermal power generation operation strategy optimization configuration hill-climbing algorithm(HCA)
暂未订购 下载PDF
Warship Spare Parts Configuration Optimization for Stock Control:Investigating the Gap Between Qualitative and Quantitative Constraints 认领 引用 被引量：1
8
作者 金家善 蔡芝明 陈砚桥 《Journal of Shanghai Jiaotong university(Science)》 EI 2017年第4期440-448,共9页
This paper investigates the gap between qualitative and quantitative constraints in spare parts stock control, with specific reference to warship spare parts support projects. A critical literature review of theoretic... This paper investigates the gap between qualitative and quantitative constraints in spare parts stock control, with specific reference to warship spare parts support projects. A critical literature review of theoretical contributions about qualitative or quantitative factors for warship spare parts warehouse management is firstly provided, which allows to analyze the reasons for this qualitative-quantitative gap by addressing the limitations of spare parts models developed in the literature. Therefore a model including cloud model, marginal analysis and Lagrange multiplier method (CML) for study is proposed in this paper to bridge the gap. The model is used to solve the mix-constraints (both qualitative and quantitative constraints are considered) problem in a logic decision diagram particularly at the different decision nodes of the diagram. Finally, verifying test results show that the algorithm is feasible and its optimal support project meets the needs of engineering practices. © 2017, Shanghai Jiaotong University and Springer-Verlag GmbH Germany. 展开更多
关键词 spare parts configuration optimization support project qualitative-quantitative gap
暂未订购 下载PDF
Repairable Configuration Optimization Model under Two-Echelon Inventory 认领 引用 被引量：1
9
作者 邓雅冲 贾云献 +1 位作者 范智滕 庞升 《Journal of Donghua University(English Edition)》 EI CAS 2015年第6期1063-1065,共3页
Spares inventory configuration optimization is an effective way to improve readiness and reduce life cycle cost of equipment.Through analyzing two-echelon spares support system,the METRIC model basic theory was used.A... Spares inventory configuration optimization is an effective way to improve readiness and reduce life cycle cost of equipment.Through analyzing two-echelon spares support system,the METRIC model basic theory was used.An inventory configuration optimization model of two-echelon spares support system was proposed which took the spares expected shortfall as the object and made the minimum repairable parts expected shortfall instead of the maximum spares supportability as the objective function.Marginal efficiency analysis algorithm was applied to optimizing the spares configuration and generating a rational spares inventory configuration.Finally,several examples are given to verify the model. 展开更多
关键词 repairable parts spares configuration optimization spares expected shortfall spares supportability marginal efficiency analysis algorithm
暂未订购 下载PDF
Investigation on the Optimizing Range of CombustionChamber Configuration Parameters of DSCS 认领 引用 被引量：1
10
作者 李向荣 张国栋 魏熔 《Journal of Beijing Institute of Technology》 EI CAS 1998年第2期147-153,共7页
Aim To obtain an optimizing range of the main configuration parameters of double swirls combustion system (DSCS) Methods To analyze the influence of DS combustion cham-ber configuration parameters on fuel spray and mi... Aim To obtain an optimizing range of the main configuration parameters of double swirls combustion system (DSCS) Methods To analyze the influence of DS combustion cham-ber configuration parameters on fuel spray and mixing by means of the fuel jet developmentperiphery charts obtained by the high speed photography with a modeling test device deve-loped by authors,and to examine it by the tests on a single cylinder diesel engine.Resultsand Conclusion The mixing process can be divided into four phases.The optimizing range of the ration of the inner chamber diameter to the cylinder bore,d2/D,is 0.4-0.7; and the outerchamber diameter,d1 the height of the circular ridge to the piston top face,h1,the radius of outer/inner chamber circle,R1,R2 ,the max depth of outer/inner chamber bowl,H1,H2,etc. are also important 展开更多
关键词 diesel engine double swirls combustion system configuration parameter optimizing range
暂未订购 下载PDF
Research on Power System Design and Energy Efficiency Improvement of New Energy Agricultural Machinery 认领 引用
11
作者 Yuxuan Mei 《Journal of Electronic Research and Application》 2026年第2期169-177,共9页
Driven by the dual objectives of agricultural green transition and carbon neutrality,new energy agricultural machinery has emerged as a pivotal solution to replace traditional fuel-powered equipment while enhancing en... Driven by the dual objectives of agricultural green transition and carbon neutrality,new energy agricultural machinery has emerged as a pivotal solution to replace traditional fuel-powered equipment while enhancing energy efficiency in farming.This study investigates powertrain systems for new energy agricultural machinery,analyzing design characteristics of mainstream technologies,including pure electric,hybrid,and clean fuel systems.Through critical design phases such as core component matching,drive configuration optimization,and energy management strategy formulation,the research proposes multidimensional energy efficiency enhancement methods tailored to operational conditions.Experimental validation confirms the feasibility and efficiency improvements of proposed designs.Results demonstrate that optimized powertrain systems with intelligent energy management can reduce energy consumption by 15-25%and increase operational efficiency by over 10%during typical tasks like plowing,rotary tilling,and transportation.Addressing existing challenges such as inadequate core technology compatibility and efficiency bottlenecks,the study offers technical breakthrough recommendations and industrial development strategies,providing theoretical references and practical pathways for advancing new energy agricultural machinery research and promotion. 展开更多
关键词 New energy agricultural machinery Power system design Energy efficiency improvement Energy management Drive configuration optimization
暂未订购 下载PDF
Variable Stiffness Identification and Configuration Optimization of Industrial Robots for Machining Tasks 认领 引用 被引量：4
12
作者 Jiachen Jiao Wei Tian +5 位作者 Lin Zhang Bo Li Junshan Hu Yufei Li Dawei Li Jianlong Zhang 《Chinese Journal of Mechanical Engineering》 SCIE EI CAS CSCD 2022年第5期275-290,共16页
Industrial robots are increasingly being used in machining tasks because of their high flexibility and intelligence.However,the low structural stiffness of a robot significantly affects its positional accuracy and the... Industrial robots are increasingly being used in machining tasks because of their high flexibility and intelligence.However,the low structural stiffness of a robot significantly affects its positional accuracy and the machining quality of its operation equipment.Studying robot stiffness characteristics and optimization methods is an effective method of improving the stiffness performance of a robot.Accordingly,aiming at the poor accuracy of stiffness modeling caused by approximating the stiffness of each joint as a constant,a variable stiffness identification method is proposed based on space gridding.Subsequently,a task-oriented axial stiffness evaluation index is proposed to quantitatively assess the stiffness performance in the machining direction.In addition,by analyzing the redundant kinematic characteristics of the robot machining system,a configuration optimization method is further developed to maximize the index.For numerous points or trajectory-processing tasks,a configuration smoothing strategy is proposed to rapidly acquire optimized configurations.Finally,experiments on a KR500 robot were conducted to verify the feasibility and validity of the proposed stiffness identification and configuration optimization methods. 展开更多
关键词 Industrial robot Space gridding Variable stiffness identification Configuration optimization Smooth processing
暂未订购 下载PDF
Optimal Configuration Method for the Installed Capacity of the Solar-Thermal Power Stations 认领 引用 被引量：1
13
作者 Yan Wang Zhicheng Ma +3 位作者 Jinping Zhang Qiang Zhou Ruiping Zhang Haiying Dong 《Energy Engineering》 EI 2023年第4期949-963,共15页
Because of the randomness of wind power and photovoltaic(PV)output of new energy bases,the problem of peak regulation capability and voltage stability of ultra-high voltage direct current(UHVDC)transmission lines,we p... Because of the randomness of wind power and photovoltaic(PV)output of new energy bases,the problem of peak regulation capability and voltage stability of ultra-high voltage direct current(UHVDC)transmission lines,we proposed an optimum allocation method of installed capacity of the solar-thermal power station based on chance constrained programming in this work.Firstly,we established the uncertainty model of wind power and PV based on the chance constrained planning theory.Then we used the K-medoids clusteringmethod to cluster the scenarios considering the actual operation scenarios throughout the year.Secondly,we established the optimal configuration model based on the objective function of the strongest transient voltage stability and the lowest overall cost of operation.Finally,by quantitative analysis of actual wind power and photovoltaic new energy base,this work verified the feasibility of the proposed method.As a result of the simulations,we found that using the optimal configuration method of solar-thermal power stations could ensure an accurate allocation of installed capacity.When the installed capacity of the solar-thermal power station is 1×106 kW,the transient voltage recovery index(TVRI)is 0.359,which has a strong voltage support capacity for the system.Based on the results of this work,the optimal configuration of the installed capacity of the solar-thermal power plant can improve peak shaving performance,transient voltage support capability,and new energy consumption while satisfying the Direct Current(DC)outgoing transmission premise. 展开更多
关键词 Solar-thermal power station optimal configuration of installed capacity new energy base multi-objective optimization chance constrained planning theory
暂未订购 下载PDF
Optimal Configuration Method for Multi-Type Reactive Power Compensation Devices in Regional Power Grid with High Proportion of Wind Power 认领 引用 被引量：1
14
作者 Ying Wang Jie Dang +2 位作者 Cangbi Ding Chenyi Zheng Yi Tang 《Energy Engineering》 EI 2024年第11期3331-3353,共23页
As the large-scale development of wind farms(WFs)progresses,the connection ofWFs to the regional power grid is evolving from the conventional receiving power grid to the sending power grid with a high proportion of wi... As the large-scale development of wind farms(WFs)progresses,the connection ofWFs to the regional power grid is evolving from the conventional receiving power grid to the sending power grid with a high proportion of wind power(WP).Due to the randomness of WP output,higher requirements are put forward for the voltage stability of each node of the regional power grid,and various reactive power compensation devices(RPCDs)need to be rationally configured to meet the stable operation requirements of the system.This paper proposes an optimal configuration method for multi-type RPCDs in regional power grids with a high proportion of WP.The RPCDs are located according to the proposed static voltage stability index(VSI)and dynamicVSI based on dynamic voltage drop area,and the optimal configuration model of RPCDs is constructed with the lowest construction cost as the objective function to determine the installed capacity of various RPCDs.Finally,the corresponding regional power grid model for intensive access to WFs is constructed on the simulation platform to verify the effectiveness of the proposed method. 展开更多
关键词 Wind power reactive power compensation device optimal configuration model voltage stability
暂未订购 下载PDF
Capacity Optimization Configuration of Hydrogen Production System for Offshore Surplus Wind Power 认领 引用 被引量：1
15
作者 Yanshan Lu Binbin He +6 位作者 Jun Jiang Ruixiao Lin Xinzhen Zhang Zaimin Yang Zhi Rao Wenchuan Meng Siyang Sun 《Energy Engineering》 EI 2023年第12期2803-2818,共16页
To solve the problem of residual wind power in offshore wind farms,a hydrogen production system with a reasonable capacity was configured to enhance the local load of wind farms and promote the local consumption of re... To solve the problem of residual wind power in offshore wind farms,a hydrogen production system with a reasonable capacity was configured to enhance the local load of wind farms and promote the local consumption of residual wind power.By studying the mathematical model of wind power output and calculating surplus wind power,as well as considering the hydrogen production/storage characteristics of the electrolyzer and hydrogen storage tank,an innovative capacity optimization allocation model was established.The objective of the model was to achieve the lowest total net present value over the entire life cycle.The model took into account the cost-benefit breakdown of equipment end-of-life cost,replacement cost,residual value gain,wind abandonment penalty,hydrogen transportation,and environmental value.The MATLAB-based platform invoked the CPLEX commercial solver to solve the model.Combined with the analysis of the annual average wind speed data from an offshore wind farm in Guangdong Province,the optimal capacity configuration results and the actual operation of the hydrogen production system were obtained.Under the calculation scenario,this hydrogen production system could consume 3,800 MWh of residual electricity from offshore wind power each year.It could achieve complete consumption of residual electricity from wind power without incurring the penalty cost of wind power.Additionally,it could produce 66,500 kg of green hydrogen from wind power,resulting in hydrogen sales revenue of 3.63 million RMB.It would also reduce pollutant emissions from coal-based hydrogen production by 1.5 tons and realize an environmental value of 4.83 million RMB.The annual net operating income exceeded 6 million RMB and the whole life cycle NPV income exceeded 50 million RMB.These results verified the feasibility and rationality of the established capacity optimization allocation model.The model could help advance power system planning and operation research and assist offshore wind farm operators in improving economic and environmental benefits. 展开更多
关键词 Surplus wind power offshore wind power hydrogen generation capacity optimization configuration total net present cost
暂未订购 下载PDF
Optimization of Line Configuration and Balancing for Flexible Machining Lines 认领 引用 被引量：4
16
作者 LIU Xuemei LI Aiping CHEN Zurui 《Chinese Journal of Mechanical Engineering》 SCIE EI CAS CSCD 2016年第3期579-587,共9页
Line configuration and balancing is to select the type of line and allot a given set of operations as well as machines to a sequence of workstations to realize high-efficiency production. Most of the current researche... Line configuration and balancing is to select the type of line and allot a given set of operations as well as machines to a sequence of workstations to realize high-efficiency production. Most of the current researches for machining line configuration and balancing problems are related to dedicated transfer lines with dedicated machine workstations. With growing trends towards great product variety and fluctuations in market demand, dedicated transfer lines are being replaced with flexible machining line composed of identical CNC machines. This paper deals with the line configuration and balancing problem for flexible machining lines. The objective is to assign operations to workstations and find the sequence of execution, specify the number of machines in each workstation while minimizing the line cycle time and total number of machines. This problem is subject to precedence, clustering, accessibility and capacity constraints among the features, operations, setups and workstations. The mathematical model and heuristic algorithm based on feature group strategy and polychromatic sets theory are presented to find an optimal solution. The feature group strategy and polychromatic sets theory are used to establish constraint model. A heuristic operations sequencing and assignment algorithm is given. An industrial case study is carried out, and multiple optimal solutions in different line configurations are obtained. The case studying results show that the solutions with shorter cycle time and higher line balancing rate demonstrate the feasibility and effectiveness of the proposed algorithm. This research proposes a heuristic line configuration and balancing algorithm based on feature group strategy and polychromatic sets theory which is able to provide better solutions while achieving an improvement in computing time. 展开更多
关键词 flexible machining line line balancing line configuration constraints model optimization
暂未订购 下载PDF
A Biomimetic Rotor-configuration Design for Optimal Aerodynamic Performance in Quadrotor Drone 认领 引用
17
作者 Yi Li Koichi Yonezawa +1 位作者 Ru Xu Hao Liu 《Journal of Bionic Engineering》 SCIE EI CSCD 2021年第4期824-839,共16页
Motivated by optimal combination of paired wings configuration and troke-plane inclination in biological flapping flights that can achieve high aerodynamic performance,we propose a biomimetic rotor-configuration desig... Motivated by optimal combination of paired wings configuration and troke-plane inclination in biological flapping flights that can achieve high aerodynamic performance,we propose a biomimetic rotor-configuration design to explore optimal aerodynamic performance in multirotor drones.While aerodynamic interactions among propellers in multirotor Unmanned Aerial Vehicles(UAVs)play a crucial role in lift force production and Figure of Merit(FM)efficiency,the rotor-configuration effect remains poorly understood.Here we address a Computational Fluid Dynamics(CFD)-based study on optimal aerodynamic performance of the rotor-configuration in hovering quadrotor drones with a specific focus on the aerodynamic effects of tip distance,height difference and tilt angle of propellers.Our results indicate that the tip distance-induced interactions can most alter lift force production and hence lead to remarked improvement in FM,and the height difference also plays a key role in improving aerodynamic performance,while the tilt angle effect is less important.Furthermore,we carried out an extensive analysis to explore the optimal aerodynamic performance of the rotor-configuration over a broad parameter space,by combining the CFD-based simulations and a novel surrogate model.We find that a rotor-configuration with a large tip distance and some height difference with zero tilt angle is capable of optimizing both lift force production and FM,which could offer a novel optimal design as well as maneuver strategy for multirotor UAVs. 展开更多
关键词 bioinspiration optimal quadrotor configuration aerodynamic interactions aerodynamic performance CFD surrogate modeling
Improvement in discharge characteristics and energy yield of ozone generation via configuration optimization of a coaxial dielectric barrier discharge reactor 认领 引用
18
作者 Chuang Liang Zhihao Liu +2 位作者 Baochang Sun Haikui Zou Guangwen Chu 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2023年第8期61-68,共8页
Dielectric barrier discharge (DBD) has been widely employed in ozone generation.However,the technology still exhibits relatively low energy yield (EY) referring to its theoretical value.In this work,EYof ozone g... Dielectric barrier discharge (DBD) has been widely employed in ozone generation.However,the technology still exhibits relatively low energy yield (EY) referring to its theoretical value.In this work,EYof ozone generation was improved by optimizing the mesh number,electrode length,and dielectric material in a coaxial DBD reactor with two wire mesh electrodes.Meanwhile,the discharge characteristics were investigated to elucidate the effect of reactor configuration on EY.Results showed that the discharge characteristics were improved by increasing the mesh number,electrode length,and relative permittivity.When the mesh number was increased from 40 to 100,an improvement of approximately 48%in EY was obtained.Additionally,higher EY values were obtained using corundum as the dielectric material relative to polytetrafluoroethylene and quartz.Ultimately,EY in the optimal DBD reactor could reach 326.77 g·(k W·h)-1.Compared with the reported DBD reactor,the coaxial DBD reactor with the mesh electrode and the dielectric material of corundum could effectively improve EY,which lays a foundation for the design of high-efficiency coaxial DBD reactor. 展开更多
关键词 Coaxial DBD reactor Configuration optimization Ozone generation Discharge characteristics Energy yield
暂未订购 下载PDF
Optimal Static Partition Configuration in ARINC653 System 认领 引用 被引量：4
19
作者 Sheng-Lin Gui Lei Luo +1 位作者 Sen-Sen Tang Yang Meng 《Journal of Electronic Science and Technology》 CAS 2011年第4期373-378,共6页
ARINC653 systems,which have been widely used in avionics industry,are an important class of safety-critical applications.Partitions are the core concept in the Arinc653 system architecture.Due to the existence of part... ARINC653 systems,which have been widely used in avionics industry,are an important class of safety-critical applications.Partitions are the core concept in the Arinc653 system architecture.Due to the existence of partitions,the system designer must allocate adequate time slots statically to each partition in the design phase.Although some time slot allocation policies could be borrowed from task scheduling policies,no existing literatures give an optimal allocation policy.In this paper,we present a partition configuration policy and prove that this policy is optimal in the sense that if this policy fails to configure adequate time slots to each partition,nor do other policies.Then,by simulation,we show the effects of different partition configuration policies on time slot allocation of partitions and task response time,respectively. 展开更多
关键词 ARINC653 earliest-next release time first policy optimal partition configuration policy real-time systems.
暂未订购 下载PDF
Research on the coordinated optimization of energy storage and renewable energy in off-grid microgrids under new electric power systems 认领 引用 被引量：1
20
作者 Zhuoran Song Mingli Zhang +2 位作者 Yuanying Chi Jialin Li Yi Zheng 《Global Energy Interconnection》 EI CSCD 2025年第2期213-224,共12页
The supply of electricity to remote regions is a significant challenge owing to the pivotal transition in the global energy landscape.To address this issue,an off-grid microgrid solution integrated with energy storage... The supply of electricity to remote regions is a significant challenge owing to the pivotal transition in the global energy landscape.To address this issue,an off-grid microgrid solution integrated with energy storage systems is proposed in this study.Off-grid microgrids are self-sufficient electrical networks that are capable of effectively resolving electricity access problems in remote areas by providing stable and reliable power to local residents.A comprehensive review of the design,control strategies,energy management,and optimization of off-grid microgrids based on domestic and international research is presented in this study.It also explores the critical role of energy stor-age systems in enhancing microgrid stability and economic efficiency.Additionally,the capacity configurations of energy storage systems within off-grid networks are analyzed.Energy storage systems not only mitigate the intermittency and volatility of renewable energy gen-eration but also supply power support during peak demand periods,thereby improving grid stability and reliability.By comparing different energy storage technologies,such as lithium-ion batteries,pumped hydro storage,and compressed air energy storage,the optimal energy storage capacity configurations tailored to various application scenarios are proposed in this study.Finally,using a typical micro-grid as a case study,an empirical analysis of off-grid microgrids and energy storage integration has been conducted.The optimal con-figuration of energy storage systems is determined,and the impact of wind and solar power integration under various scenarios on grid balance is explored.It has been found that a rational configuration of energy storage systems can significantly enhance the utilization rate of renewable energy,reduce system operating costs,and strengthen grid resilience under extreme conditions.This study provides essential theoretical support and practical guidance for the design and implementation of off-grid microgrids in remote areas. 展开更多
关键词 Off-grid microgrid Energy storage system Optimal configuration Renewable energy
暂未订购 下载PDF
已选0条
引用分析
参考文献
引证文献
 统计分析
检索结果
已选文献
上一页 1 2 … 4 下一页 到第 页
在线咨询 使用帮助 返回顶部 意见反馈