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Design and Experimental Verification of a Roll Control Strategy for Large Wingspan Flapping-Wing Aerial Vehicle

Journal of Bionic Engineering 2024年第4期21卷 1644-1661页

作者： rui meng.bifeng.song.jianlin xuan Xiaojun Yang Dong Xue School of Aeronautics Northwestern Polytechnical UniversityXi’an710072China Research and Development Institute of Northwestern Polytechnical University in Shenzhen Shenzhen518057China Yangtze River Delta Research Institute of Northwestern Polytechnical University Taicang215400China

Most flapping-wing aircraft wings use a single degree of freedom to generate lift and thrust by flapping up and down,while relying on the tail control surfaces to manage ***,these aircraft have certain limitations,such as poor accuracy in attitude control and inadequate roll control *** paper presents a design for an active torsional mechanism at the wing's trailing edge,which enables differential variations in the pitch angle of the left and right wings during *** simple mechanical form significantly enhances the aircraft's roll control *** experimental verification of this mechanism was conducted in a wind tunnel using the RoboEagle flapping-wing aerial vehicle that we *** study investigated the effects of the control strategy on lift,thrust,and roll moment during flapping ***,the impact of roll control on roll moment was examined under various wind speeds,flapping frequencies,angles of attack,and wing ***,several rolling maneuver flight tests were performed to evaluate the agility of RoboEagle,utilizing both the elevon control strategy and the new roll control *** results demonstrated that the new roll control strategy effectively enhances the roll control capability,thereby improving the attitude control capabilities of the flapping-wing aircraft in complex wind field *** conclusion is supported by a comparison of the control time,maximum roll angle,average roll angular velocity,and other relevant parameters between the two control strategies under identical roll control input.

关键词： Roll control Bio-inspired Roll moment Flapping wing aerial vehicle

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Property evolution and service life prediction of novel metallic materials for future lunar bases

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Rare Metals 2024年第10期43卷 5318-5331页

作者： Sen-Kuan meng rui-song Zhu Hong-Liang Zheng Tong Gao Shi-Hao Jiang Wen-Hao Wang Shu-Hao Zhang Zi-Yuan Zhao xuan Ge Wei-Min Wang Li-Na Hu Zheng Wang Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education) School of Materials Science and EngineeringShandong University Department of Chemistry and Bioscience Aalborg University

While lunar bases have been a focus of development in recent years, the complex and extreme environment of the lunar surface remains a considerable challenge for lunar exploration. Unlike those on Earth,lunar day and night temperature variations cause the properties of materials, especially metallic materials, to evolve in completely different manners. In this study, we investigated the property evolution of nine typical highperformance metallic materials using laboratory simulations of the extremely long-period lunar temperature environment. While lunation treatment improves the properties of all metallic materials, the microscopic mechanisms vary for amorphous and crystalline alloys with different structures. The treatment reduces both the loosely packed regions and heterogeneity in amorphous alloys while causing significant phase changes in crystalline alloys. Furthermore, a conservative prediction of the service life of metallic materials on lunar bases is provided based on analyzing microplastic events, followed by the practical material selection recommendations in various lunar application scenarios.

关键词： Lunar exploration Metallic glass Metallic material Property evolution

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The anti-inflammatory effects of exercise on autoimmune diseases:A 20-year systematic review

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Journal of Sport and Health Science 2024年第3期13卷 353-367,I0001页

作者： Beibei Luo Dao Xiang Xiaorong Ji xuan Chen rui Li Shuxin Zhang Yujun meng David C.Nieman Peijie Chen School of Exercise and Health Shanghai University of SportShanghai 200438China Shanghai Key Laboratory of Human Performance Shanghai University of SportShanghai 200438China Department of Diving and Hyperbaric Medicine Naval Medical CenterShanghai 200433China National Key Laboratory of Immunity and Inflammation Naval Medical UniversityShanghai 200433China Human Performance Laboratory Appalachian State UniversityNorth Carolina Research CampusKannapolisNC 28081USA Research Institute for Doping Control Shanghai University of SportShanghai 200438China

Background:The anti-inflammatory effect of exercise may be an underlying factor in improving several autoimmune *** aim of this systematic review was to examine the evidence on the role of exercise training in mitigating inflammation in adolescents and adults with autoimmune ***:PubMed,Web of Science,and Embase databases were systematically reviewed for related studies published between January 1,2003,and August 31,*** randomized and non-randomized controlled trials of exercise interventions with autoimmune disease study participants that evaluated inflammation-related biomarkers were *** quality of evidence was assessed using the Tool for the assEssment of Study qualiTy and reporting in EXercise scale and Cochrane bias risk ***:A total of 14,565 records were *** screening the titles,abstracts,and full texts,87 were eligible for the systematic *** studies were conducted in 25 different countries and included a total of 2779 participants(patients with autoimmune disease,in exercise or control groups).Overall,the evidence suggests that inflammation-related markers such as C-reactive protein,interleukin 6,and tumor necrosis factor a were reduced by regular exercise *** exercise interventions combined with multiple exercise modes were associated with greater ***:Regular exercise training by patients with autoimmune disease exerts an anti-inflammatory *** systematic review provides support for the promotion and development of clinical exercise intervention programs for patients with autoimmune *** patients with autoimmune disease can safely adopt moderate exercise training protocols,but changes in inflammation biomarkers will be modest at *** exercise interventions are ineffective or even modestly but transiently pro-inflammatory.

关键词： Autoimmune diseases Cytokines Inflammation Physical activity Training

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Medcheck:A novel software for automated de-formulation of traditional Chinese medicine(TCM)prescriptions by liquid chromatography-mass spectrometry

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Journal of Pharmaceutical Analysis 2024年第6期14卷 930-932页

作者： Xiao-lan Li Jian-qing Zhang Yun Li xuan-jing Shen Huan-ya Yang Lin Yang meng Xu Qi-rui Bi Chang-liang Yao De-an Guo Shanghai Research Center for Modernization of Traditional Chinese Medicine National Engineering Research Center of TCM Standardization TechnologyShanghai Institute of Materia MedicaChinese Academy of SciencesShanghai201203China b University of Chinese Academy of Sciences Beijing100049China

Prescriptions are the main clinical application of traditional Chinese medicines(TCMs).Common forms include Chinese patent medicines,Kampo formulas,and hospital decoctions.A new pre-scription called“famous classical formulas”is recently developed and expected to boom in the *** constituent me-dicinal plants in prescriptions is critical for new drug development and quality control[1],which could avoid safety issues from adulteration or substandard ingredients,as seen in the notorious Longdan Xiegan Pill event.

关键词： medicines formulation prescription

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Characterization of Polymer Aging:A Review

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Chinese Journal of Polymer Science 2024年第11期 1642-1660页

作者： xuan Liu rui Yang Zhi-Ping Xu Yan Ye Guo-Shuo Tang Min Zhao Qian Zhang Xiang-Ze meng School of Chemical and Pharmaceutical Engineering Hefei Normal University Department of Chemical Engineering Tsinghua University

Polymer aging under environmental conditions causes deterioration of service *** the aging behavior and mechanism is important not only for lifetime prediction,but also for material improvement and ***,comprehensive characterization of polymer materials during aging is *** this review,various analytical methods for characterization of chemical changes,physical changes and service properties are *** on that,methods for stabilization evaluation and lifetime prediction,especially sensitive evaluation methods are *** changes include molecular weight changes by chain scission and crosslinking,functional group changes on the surface and in the bulk,formation of free radicals,formation of small molecular species as the degradation products,and chemical distribution by heterogeneous aging and additives *** changes include crystallization changes (post-or chemi-crystallization)and morphology changes (cracking,debonding,etc.).Service property changes include deterioration of processability,mechanical properties,electrical properties and *** the end,existing problems and future research perspective are proposed,including relationship between chemical/physical changes and service properties,introduction of modern mathematical and computer tools.

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具备多模态运动能力的扑翼飞行器研究进展

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航空学报 2024年第18期45卷 1-27页

作者：王嘉鑫宣建林杨晓君郑睿西北工业大学航空学院西安710012

飞行生物在不同的运动模式和栖息环境下通常会展现不同的运动特征,如自主起降、滑翔和快速机动等。这些多模态运动能力显著提升了它们对环境的适应力和生存能力,为当前扑翼飞行器设计提供了许多启示。本文回顾了昆虫和鸟类某些具有重要... 详细信息

飞行生物在不同的运动模式和栖息环境下通常会展现不同的运动特征,如自主起降、滑翔和快速机动等。这些多模态运动能力显著提升了它们对环境的适应力和生存能力,为当前扑翼飞行器设计提供了许多启示。本文回顾了昆虫和鸟类某些具有重要意义的多模态运动机理以及与扑翼飞行器工程设计相关的内容,综述了具备多模态运动能力的扑翼飞行器的设计特点,并对相关技术的发展水平和关键问题进行了分析和总结。最后,基于昆虫和鸟类的生物学机理与扑翼飞行器的发展现状,阐述了扑翼飞行器未来在多模态设计方面面临的关键难题,并展望了未来需要重点研究的方向。

关键词：多模态运动机理扑翼飞行器多模态设计技术自主起降扑滑结合飞爬一体

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面向微光学元件表面形貌测量的涡旋相移数字全息技术

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中国光学（中英文） 2024年第4期17卷 852-861页

作者：薛一梦刘丙才潘永强房鑫萌田爱玲张瑞轩西安工业大学光电工程学院陕西西安710021 西安工业大学陕西省薄膜技术与光学检测重点实验室陕西西安710021

非接触、无损害的相移数字全息技术对微光学元件检测具有独特优势。因传统的相移数字全息技术需要对相移器进行精细控制和繁琐校准,同时其光路易受到机械振动干扰,导致全息再现像的质量降低。本文借助涡旋光特殊的相位分布,提出了一种... 详细信息

非接触、无损害的相移数字全息技术对微光学元件检测具有独特优势。因传统的相移数字全息技术需要对相移器进行精细控制和繁琐校准,同时其光路易受到机械振动干扰,导致全息再现像的质量降低。本文借助涡旋光特殊的相位分布,提出了一种基于涡旋相移数字全息的微光学元件表面形貌测量方法。该方法利用螺旋相位板调制涡旋相位,引入高精度相移。基于构建的涡旋相移数字全息显微实验装置,采用干涉极值法确定了相移干涉图之间的真实相移量,并对螺旋相位板的旋转角度与相移量的关系进行标定,实验验证了涡旋相移的可行性;对微透镜阵列进行了重复测量实验,将测试结果与ZYGO白光干涉仪的测试结果进行比较。结果表明:测量得到单个微透镜的平均纵向矢高为12.897μm,平均相对误差为0.155%。所提方法可以实现对被测微光学元件表面形貌的高精度测量,具有易操作、稳定可靠、准确性高等优点。

关键词：涡旋相移数字全息显微螺旋相位板相位重建

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履带式自动跟随小车设计

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智能计算机与应用 2024年第6期14卷 193-196页

作者：尉祎璠玄一彤孟睿天津职业技术师范大学电子工程学院天津300222

针对目前智能行李箱环境适应性的不足,设计了履带式智能行李箱运载小车。小车基于UWB超宽带定位技术实时定位主人位置,抗干扰能力高;采用履带式底盘提升小车在复杂路况中通过障碍及爬坡驱动作业性能。本文讨论了电机使能控制信号对履带... 详细信息

针对目前智能行李箱环境适应性的不足,设计了履带式智能行李箱运载小车。小车基于UWB超宽带定位技术实时定位主人位置,抗干扰能力高;采用履带式底盘提升小车在复杂路况中通过障碍及爬坡驱动作业性能。本文讨论了电机使能控制信号对履带式小车差速转向灵敏度的影响,用实验法确定了小车最佳转向跟随判定阈值角度,并测试了其爬坡能力。结果表明:履带驱动PWM使能信号周期200 ms时转向效果最好,最佳转向跟随判定角度为65°,小车最大爬坡角度为30°。

关键词：自动跟随 UWB定位差速转向履带式爬坡

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Moderated crevice corrosion susceptibility of Ti6Al4V implant material due to albumin-corrosion interaction

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Journal of Materials Science & Technology 2022年第14期109卷 209-220页

作者： Jing Wu meng Li Chuanchuan Lin Pengfei Gao rui Zhang xuan Li Jixi Zhang Kaiyong Cai Key Laboratory of Biorheological Science and Technology Ministry of EducationCollege of BioengineeringChongqing UniversityChongqing 400044China

Localized corrosion of metallic biomaterials is a concerning problem for implant *** the present work,the interaction between localized corrosion of Ti6Al4V implant material and adsorption of bovine serum albumin(BSA)was investigated by electrochemical tests,surface morphological and compositional *** artificial crevice was set up on the Ti6Al4V surface to simulate the crevice corrosion of metallic *** results show that the BSA adsorption is regulated by the heterogeneous metallic ion release resulted from the crevice *** negatively charged BSA prefers to aggregate at the interior of artificial crevice due to electrostatic interaction with the concentrated metallic cations in the *** return,the non-uniform BSA adsorption can decrease the crevice corrosion susceptibility of the Ti6Al4V implant material,even though the presence of BSA accelerates the dissolution of passive *** the Ti6Al4V alloys with artificial crevice,stable localized corrosion occurs after 96 h of immersion in the PBS free of BSA while no stable localized corrosion can be determined in the presence of 4%*** is deduced that the presence of BSA can reduce the surface potential discrepancy between the crevice interior and the crevice *** disclosed mechanism of albumin-corrosion interaction is vital to the localized corrosion control of metallic implants in clinical use.

关键词： Titanium alloy Albumin Electrochemistry Localized corrosion Protein adsorption

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仿真引力系统的非线性光学实验进展

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天文学进展 2024年第1期42卷 40-57页

作者：崔峻烽孟润宇董小波张晓世李睿晅白金明中国科学院云南天文台昆明650216 中国科学院大学北京100049 云南大学物理与天文学院昆明650500 中国科学院空天信息创新研究院北京100094

非线性薛定谔方程(nonlinear Schrodinger equation,NLSE)是多类物理现象所遵守规律的共同数学形式。在光学系统中,NLSE可以描述激光脉冲在介质中传播的时空演化;在天文学中,可以描述引力透镜、波动暗物质纤维等天体和观测现象(所谓薛... 详细信息

非线性薛定谔方程(nonlinear Schrodinger equation,NLSE)是多类物理现象所遵守规律的共同数学形式。在光学系统中,NLSE可以描述激光脉冲在介质中传播的时空演化;在天文学中,可以描述引力透镜、波动暗物质纤维等天体和观测现象(所谓薛定谔―泊松方程系统,SPE),甚至可以巧妙地用来类比强引力场现象(所谓爱因斯坦Klein-Gordon系统,EKG)。从仿真原理、光路设计、实验结果、天文诠释等方面,详细介绍了非线性光学仿真实验在天文学领域的应用和进展;并简要展望了未来开展非线性光学实验,仿真各种波动暗物质结构的演化之前景。

关键词：引力系统波动暗物质类比引力实验仿真非线性光学非线性薛定谔方程

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