搜索到621篇“ DRAGONFLY“的相关文章
Dragonfly Interaction Algorithm for Optimization of Queuing Delay in Industrial Wireless Networks
2024年
In industrial wireless networks,data transmitted from source to destination are highly repetitive.This often leads to the queuing of the data,and poor management of the queued data results in excessive delays,increased energy consumption,and packet loss.Therefore,a nature-inspired-based Dragonfly Interaction Optimization Algorithm(DMOA)is proposed for optimization of the queue delay in industrial wireless networks.The term“interaction”herein used is the characterization of the“flying movement”of the dragonfly towards damselflies(female dragonflies)for mating.As a result,interaction is represented as the flow of transmitted data packets,or traffic,from the source to the base station.This includes each and every feature of dragonfly movement as well as awareness of the rival dragonflies,predators,and damselflies for the desired optimization of the queue delay.These features are juxtaposed as noise and interference,which are further used in the calculation of industrial wireless metrics:latency,error rate(reliability),throughput,energy efficiency,and fairness for the optimization of the queue delay.Statistical analysis,convergence analysis,the Wilcoxon test,the Friedman test,and the classical as well as the 2014 IEEE Congress of Evolutionary Computation(CEC)on the benchmark functions are also used for the evaluation of DMOA in terms of its robustness and efficiency.The results demonstrate the robustness of the proposed algorithm for both classical and benchmarking functions of the IEEE CEC 2014.Furthermore,the accuracy and efficacy of DMOA were demonstrated by means of the convergence rate,Wilcoxon testing,and ANOVA.Moreover,fairness using Jain’s index in queue delay optimization in terms of throughput and latency,along with computational complexity,is also evaluated and compared with other algorithms.Simulation results show that DMOA exceeds other bio-inspired optimization algorithms in terms of fairness in queue delay management and average packet loss.The proposed algorithm is also evaluated for the con
Sanjay BhardwajDa-Hye KimDong-Seong Kim
关键词:DRAGONFLYDAMSELFLYINTERACTIONOPTIMIZATION
手机(Dragonfly)
1.本外观设计产品的名称:手机(Dragonfly)。;2.本外观设计产品的用途:本外观设计产品用于运行程序和/或通信。;3.本外观设计产品的设计要点:在于产品的形状、图案及其结合。;4.最能表明设计要点的图片或照片:立...
万志华陈梁建杨伟叶富强竹岩
玩具(喷水蜻蜓Dragonfly Sprayer)
1.本外观设计产品的名称:玩具(喷水蜻蜓Dragonfly Sprayer)。;2.本外观设计产品的用途:本外观设计产品用于供小孩子玩耍的喷水蜻蜓玩具。;3.本外观设计产品的设计要点:在于本产品的形状。;4.最能表明设计...
陈松青
基于蜻蜓算法的飞行器自抗扰控制器设计
2024年
针对飞行器复杂环境下强耦合、非线性和气动参数变化剧烈的问题,提出一种基于蜻蜓算法的自抗扰控制器设计方法。首先建立复杂环境下飞行过程三通道的数学模型,采用扩张状态观测器估计系统的状态和总扰动,并对观测到的干扰进行补偿,采用蜻蜓算法整定优化自抗扰控制器的参数,最后通过六自由度仿真进行验证。结果表明,优化后的控制器参数具有更好的控制精度,在气动参数拉偏的情况下也具有较好的控制效果。
陈哲一高晓颖赵建军郑总准刘晓宇
关键词:飞行器自抗扰控制
Effect of Blood Circulation in Veins on Resonance Suppression of the Dragonfly Wing Constructed by Numerical Method
2024年
To reveal the resonance suppression mechanism of the blood circulation in dragonfly wings,a numerical modeling method of dragonfly wings based on Voronoi diagrams is proposed,and the changes in mass,aerodynamic damping,and natural frequencies caused by blood circulation in veins are investigated.The equivalent mass of blood,boundary conditions,and aerodynamic damping are calculated theoretically.Modal analysis and harmonic response analysis of wing models with different blood circulation paths are performed using the finite-element method(FEM).The vibration reduction ratioδis introduced to compare the damping efficiency of different mass regions.Finally,a natural frequency testing device is constructed to measure the natural frequencies of dragonfly wings.The results indicate that the shape,mass,and natural frequencies of the dragonfly wing model constructed by numerical method agree well with reality.The mass distribution on the wing can be altered by blood circulation,thereby adjusting the natural frequencies and achieving resonance suppression.The highestδof 1.013 is observed in the C region when blood circulates solely in secondary veins,but it is still lower than theδof 1.017 when blood circulates in complete veins.The aerodynamic damping ratio(1.19–1.79%)should not be neglected in the vibration analysis of the beating wing.
Lijun ZhangXu ZhangKaifei WangZhenwei GanShibo LiuXiao LiuZhengjun JingXudong CuiJiahui LuJing Liu
关键词:FEM
蜻蜓扑翼前飞时弯曲褶皱翼气动特性分析
2024年
蜻蜓翅膀具有独特的褶皱结构,其横截面在扑翼飞行中常呈现弯曲变形.本文设计了具有弯度的褶皱翼型,并综合考虑弯度大小及分布的影响;基于Fluent软件,采用重叠网格方法对其扑翼前飞的气动性能进行分析.首先,与平板褶皱翼相比,正弯度褶皱翼可以显著提高升力,在对弯曲大小和分布的合理设计下,如m=4%, p=0.2时,可实现在扑翼中同时提高升力和推力.其次,弯曲褶皱翼型的升力随着扭转角的增加而增加,但是较大扭转角会降低推力,此时可通过后移最大弯曲位置改善推力.因此,在特定条件下,合适的弯度大小及分布可以较大幅度地改善褶皱翼型的气动力性能.
侯丹谭标仲政
自动驾驶与机器人实践指南 基于DragonFly智能车的模块化设计方法
本书深入探讨了构建自动驾驶汽车和机器人的全过程。作为刘少山博士的得意之作,本书不仅被国际电气和电子工程师协会计算机学会(IEEEComputerSociety)推荐为无人驾驶国际标准教材,还涵盖了从基础硬件设备到通信、定...
刘少山作
一种针对Dragonfly拓扑的动态重构实施方法
本发明提供一种针对Dragonfly拓扑的动态重构实施方法,随着网络中流量模式不断变化,首先周期性收集网络流量信息并分析生成重构指令。其次在网络重构前,识别出网络中即将受重构影响的数据流,对其进行局部排空操作。然后向光交...
唐益莹李子健邵将刘森秦勇
基于改进蜻蜓算法的综合能源系统经济调度
2024年
为了提升热、电、气综合能源系统(Integrated Energy System,IES)的经济效益,文章以IES总成本最小构建了综合能源系统经济调度模型。采用逆混沌映射和非线性惯性权重对蜻蜓算法进行改进,使改进的蜻蜓算法(Improved Dragonfly Algorithm,IDA)具备更好地寻优性能。采用IDA算法对综合能源系统经济调度模型进行求解,并将求解结果与常用优化算法进行对比,结果表明,IDA算法在进行综合能源系统经济调度时的优化效果更好,在该调度方案下,各设备出力合理,IES总成本也达到了最小,实现了IES的经济调度。
伍瑞泽尤敬尧段洁陈磊曾芮清
关键词:经济调度总成本
基于混沌映射和差分进化的改进蜻蜓算法
2024年
针对蜻蜓算法初始种群随机性大、算法权重参数调节困难导致算法收敛精度低,后期种群收缩限制导致算法活力不足、收敛速度慢等问题,提出一种基于混沌映射和差分进化的改进蜻蜓算法。通过Tent混沌映射,使种群初始化分布均匀;改进对齐权重、聚集权重和惯性权重,提高收敛速度和精度;引入差分算法,提高最后时刻收敛速度;最终选取9个测试函数做仿真试验对比。结果表明,相较于基础蜻蜓算法、差分进化蜻蜓算法,基于混沌映射和差分进化改进后的蜻蜓算法收敛速度和精度提升显著,避免陷入局部最优解,能获得稳定可靠的全局最优解。
田博文朱姿娜刘瑞郭中阳
关键词:差分算法

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