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Dynamic Event-Triggered Fixed-Time Consensus Control and Its Applications to Magnetic Map Construction

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自动化学报:英文版 2023年第10期10卷 2000-2013页

作者： Jiayu Chai Qiang Lu Xudong Tao dongliang peng Botao Zhang School of Automation Hangzhou Dianzi UniversityHangzhou 310018China

This article deals with the consensus problem of multi-agent systems by developing a fixed-time consensus control approach with a dynamic event-triggered rule. First, a new fixedtime stability condition is obtained where the less conservative settling time is given such that the theoretical settling time can well reflect the real consensus time. Second, a dynamic event-triggered rule is designed to decrease the use of chip and network resources where Zeno behaviors can be avoided after consensus is achieved, especially for finite/fixed-time consensus control approaches. Third, in terms of the developed dynamic event-triggered rule, a fixed-time consensus control approach by introducing a new item is proposed to coordinate the multi-agent system to reach consensus. The corresponding stability of the multi-agent system with the proposed control approach and dynamic eventtriggered rule is analyzed based on Lyapunov theory and the fixed-time stability theorem. At last, the effectiveness of the dynamic event-triggered fixed-time consensus control approach is verified by simulations and experiments for the problem of magnetic map construction based on multiple mobile robots.

关键词： Dynamic event-triggered rule fixed-time consensus control fixed-time stability condition magnetic map construction multi-agent system

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增强探测信息可观测性的主动防御滑模协同突防制导律

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导弹与航天运载技术（中英文） 2024年第2期 51-58页

作者：王昌平方峰王振亚彭冬亮谢俊伟杭州电子科技大学自动化学院杭州310018 中国运载火箭技术研究院北京100076

针对敌方来袭拦截弹制导策略未知的主动防御协同突防场景,考虑目标弹-防御弹单向和双向协同配合模式,采用滑模控制方法提出了兼顾拦截弹探测信息可观测性和防御弹反拦截精度的协同突防制导律。构建了融合空间探测构型需求和拦截成功必... 详细信息

针对敌方来袭拦截弹制导策略未知的主动防御协同突防场景,考虑目标弹-防御弹单向和双向协同配合模式,采用滑模控制方法提出了兼顾拦截弹探测信息可观测性和防御弹反拦截精度的协同突防制导律。构建了融合空间探测构型需求和拦截成功必要条件的滑模面,分别应用双幂次趋近律和带状态反馈的指数型趋近律,推导了目标弹-防御弹的单/双向协同制导律。相较于单向协同,双向协同通过引入加速度代价函数,应用最优化方法优化了协同突防制导律,目标弹通过协作机动帮助防御弹降低打击来袭拦截弹的过载需求。仿真结果表明,协同滑模突防制导律可确保目标弹和防御弹达到期望的空间探测构型,并能够精准地打击来袭拦截弹。

关键词：主动防御协同制导滑模控制可观测性

基于5G和SNMP协议的小型UPS在线监测方法研究

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科技资讯 2024年第6期22卷 33-35页

作者：彭东亮林保罗马若声广州地铁集团有限公司广州铁科智控有限公司广东广州510000

针对地铁无人值守车站信号设备房小型不间断电源(Uninterruptible Power Supply,UPS)因缺乏在线监测而导致故障影响大的问题,开展了基于5G和简单网络管理协议(Simple Network Management Protocol,SNMP)的小型UPS在线监测方法研究,对监... 详细信息

针对地铁无人值守车站信号设备房小型不间断电源(Uninterruptible Power Supply,UPS)因缺乏在线监测而导致故障影响大的问题,开展了基于5G和简单网络管理协议(Simple Network Management Protocol,SNMP)的小型UPS在线监测方法研究,对监测系统的原理及组成进行了详细的阐述,分析了SNMP协议的管理信息库(Management Information Base,MIB),并给出了MIB库的应用方法,运用5G技术进行数据传输,最后通过编制应用软件,实现了型号为UHA1R-0030L的艾默生小型UPS的远程实时数据采集,为地铁无人值守车站小型UPS远程监测提供了解决方案,对解决长期以来地铁无人值守车站小型UPS发生故障无法及时处理的问题具有十分重要的意义。

关键词：不间断电源系统单网络管理协议在线监测 5G通信

“双拱”弹性支架与“2+2”支架鼻尖成形术的临床比较

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中国美容医学 2024年第8期33卷 9-13页

作者：夏志冉周琮镇彭栋梁上海千美门诊部上海201100 杭州艺星医疗美容医院医疗美容科浙江杭州310012 广州海峡医疗美容医院医疗美容科广东广州510000

目的:比较“双拱”弹性支架与“2+2”支架在鼻尖成形术中的临床应用效果。方法:回顾性分析2022年1月-2023年8月笔者医院收治的100例行肋软骨综合鼻整形术就医者的临床资料。依据手术方式的不同分为观察组与对照组,各50例。观察组采用“... 详细信息

目的:比较“双拱”弹性支架与“2+2”支架在鼻尖成形术中的临床应用效果。方法:回顾性分析2022年1月-2023年8月笔者医院收治的100例行肋软骨综合鼻整形术就医者的临床资料。依据手术方式的不同分为观察组与对照组,各50例。观察组采用“双拱”支架鼻尖成形联合膨体植入鼻部的手术方式,对照组采用“2+2”鼻尖成形联合膨体植入鼻部的手术方式。对比两组手术时长、鼻尖突出度、鼻尖突出率,鼻尖活动度及美学满意度。结果:本组100例就医者均获随访9个月。观察组手术时长较对照组长(P0.05);观察组鼻尖突出率与对照组比较,差异无统计学意义(P>0.05);观察组9个月的鼻尖活动满意度评分均高于对照组(P<0.05)。结论:“双拱”弹性支架鼻尖成形术是一种模拟鼻尖解剖结构的手术方式,与主流的鼻尖成形术比较,效果及稳定性可靠,需术者对手术有更细致的把控与更资深的经验,就医者的鼻尖活动度明显提升,是一种值得推广的鼻尖成形术。

关键词：鼻尖成形鼻整形术肋软骨皮质 “双拱”弹性支架鼻翼软骨

Promising Electrode and Electrolyte Materials for High-Energy-Density Thin-Film Lithium Batteries

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Energy & Environmental Materials 2022年第1期5卷 133-156页

作者： Jie Lin Liang Lin Shasha Qu Dongyuan Deng Yunfan Wu Xiaolin Yan Qingshui Xie Laisen Wang dongliang peng College of Materials State Key Laboratory for Physical Chemistry of Solid SurfacesFujian Key Laboratory of Materials GenomeCollaborative Innovation Center of Chemistry for Energy MaterialsXiamen UniversityXiamen 361005China

All-solid-state thin-film lithium batteries(TFLBs)are the ideal wireless power sources for on-chip micro/nanodevices due to the significant advantages of safety,portability,and *** the bottleneck for increasing the energy density of TFLBs,the key components of cathode,electrolyte,and anode are still underway to be *** this review,a brief history of TFLBs is first outlined by presenting several TFLB *** on the state-of-the-art materials developed for lithium-ion batteries(LIBs),the challenges and related strategies for the application of those potential electrode and electrolyte materials in TFLBs are *** the advanced manufacture and characterization techniques,the recent advances of TFLBs are reviewed for pursuing the high-energy-density and long-termdurability demands,which could guide the development of future TFLBs and analogous all-solid-state lithium batteries.

关键词： all-solid-state high-energy-density lithium battery physical vapor deposition thin film

A combined algorithm of K-means and MTRL for multi-class classification

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Journal of Systems Engineering and Electronics 2019年第5期30卷 875-885页

作者： XUE Mengfan HAN Lei peng dongliang School of Automation Hangzhou Dianzi University

The basic idea of multi-class classification is a disassembly method,which is to decompose a multi-class classification task into several binary classification *** order to improve the accuracy of multi-class classification in the case of insufficient samples,this paper proposes a multi-class classification method combining K-means and multi-task relationship learning(MTRL).The method first uses the split method of One *** to disassemble the multi-class classification task into binary classification tasks.K-means is used to down sample the dataset of each task,which can prevent over-fitting of the model while reducing training ***,the sampled dataset is applied to the MTRL,and multiple binary classifiers are trained *** the help of MTRL,this method can utilize the inter-task association to train the model,and achieve the purpose of improving the classification accuracy of each binary *** effectiveness of the proposed approach is demonstrated by experimental results on the Iris dataset,Wine dataset,Multiple Features dataset,Wireless Indoor Localization dataset and Avila dataset.

关键词： machine learning multi-class classification K-means multi-task relationship learning (MTRL) over-fitting

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基于深度学习的舰船目标重识别技术

指挥控制与仿真 2024年第4期46卷 88-96页

作者：莫倩倩刘俊管坚杨麒霖彭冬亮陈华杰谷雨杭州电子科技大学浙江杭州310018

面向行人和车辆的重识别技术已在情报分析领域得到成功应用,但是对于舰船目标的重识别技术研究还比较缺乏,对此本文提出了一种基于双重特征融合的海上去雾重识别网络,用于海面舰船目标的情报分析和监管。首先,为了降低负样本对特征的影... 详细信息

面向行人和车辆的重识别技术已在情报分析领域得到成功应用,但是对于舰船目标的重识别技术研究还比较缺乏,对此本文提出了一种基于双重特征融合的海上去雾重识别网络,用于海面舰船目标的情报分析和监管。首先,为了降低负样本对特征的影响,采用了视角辅助的自适应查询扩展方法和基于相似度的特征融合方法。其次,在重识别分支的浅层嵌入了去雾分支,利用权重共享技术提取无雾特征,并通过上采样技术和金字塔模型重建去雾图像,以增强网络在低能见度场景下的识别能力。最后,提出了一种基于伪交并比的非极大值抑制方法,通过修正检测框置信度来提高船舶目标的检测精度。实验结果表明,所提方法的性能优于现有方法,并且各模块对网络性能都有贡献。

关键词：船舶重识别深度学习卷积神经网络视角辅助

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Geometrical entropy approach for variable structure multiple-model estimation

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Chinese Journal of Aeronautics 2015年第4期28卷 1131-1146页

作者： Shen-tu Han Xue Anke peng dongliang Institution of Information and Control Hangzhou Dianzi University

The variable structure multiple-model（VSMM） estimation approach, one of the multiple-model（MM） estimation approaches, is popular in handling state estimation problems with mode *** the VSMM algorithms, the model sequence set adaptation（MSA） plays a key *** MSA methods are challenged in both theory and practice for the target modes and the real observation error distributions are usually uncertain in *** this paper, a geometrical entropy（GE） measure is proposed so that the MSA is achieved on the minimum geometrical entropy（MGE） ***, the minimum geometrical entropy multiple-model（MGEMM） framework is proposed, and two suboptimal algorithms, the particle filter k-means minimum geometrical entropy multiple-model algorithm（PF-KMGEMM） as well as the particle filter adaptive minimum geometrical entropy multiple-model algorithm（PF-AMGEMM）, are established for practical *** proposed algorithms are tested in three groups of maneuvering target tracking scenarios with mode and observation error distribution *** simulations have demonstrated that compared to several existing algorithms, the MGE-based algorithms can achieve more robust and accurate estimation results when the real observation error is inconsistent with a priori.

关键词： Geometrical entropy Maneuvering target tracking Model sequence setadaptation Multiple-model estimation Particle filter

In-situ imaging electrocatalysis in a solid-state Li-O_(2) battery with CuSe nanosheets as air cathode

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Chinese Chemical Letters 2024年第5期35卷 466-470页

作者： peng Jia Yunna Guo dongliang Chen Xuedong Zhang Jingming Yao Jianguo Lu Liqiang Zhang Hebei Key Laboratory of Applied Chemistry College of Environmental and Chemical EngineeringYanshan UniversityQinhuangdao 066004China Clean Nano Energy Center State Key Laboratory of Metastable Materials Science and TechnologyYanshan UniversityQinhuangdao 066004China State Key Laboratory of Silicon and Advanced Semiconductor Materials School of Materials Science and EngineeringZhejiang UniversityHangzhou 310058China Key Laboratory of Low Dimensional Materials and Application Technology of Ministry of Education School of Materials Science and EngineeringXiangtan UniversityXiangtan 411105China

The development of highly efficient catalysts in the cathodes of rechargeable Li-O_(2) batteries is a considerable *** enhance the electrochemical performance of the Li-O_(2) battery,it is essential to choose a suitable catalyst *** selenide(CuSe)is considered as a more promising cathode catalyst material for Li-O_(2) battery due to its better conductivity and rich electrochemical active ***,its electrochemical reaction and fundamental catalytic mechanism remain unclear till ***,in-situ environmental transmission electron microscopy technique was used to study the catalysis mechanism of the CuSe nanosheets in Li-O_(2) batteries during discharge and charge *** is found that Li_(2)O was formed and decomposed around the ultrafine-grained Cu during the discharge and charge processes,respectively,demonstrating excellent *** indicate that the freshly formed ultrafine-grained Cu in the conversion reaction catalyzed the latter four-electron-transfer oxygen reduction reaction,leading to the formation of Li_(2)*** study provides important understanding of the electrochemistry of the LiO_(2) nanobatteries,which will aid the development of high-performance Li-O_(2) batteries for energy storage applications.

关键词： In-situ environmental transmission electron microscopy Lithium oxygen batteries CuSe nanosheets Oxygen reduction reaction Oxygen evolution reaction