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Finite-time Attitude Coordinated Control for Spacecraft Formation Flying Using Consensus Algorithm

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Finite-time Attitude Coordinated Control for Spacecraft Form...

第40届中国控制会议

作者： xiong xie Tao Sheng Zhijun Chen Liang He College of Aerospace Science and Engineering National University of Defense Technology

For the spacecraft formation flying system with unknown external disturbances and model uncertainties, a finite-time attitude coordinated control law is proposed based on consensus theory. Firstly, a disturbance observer is developed to estimate generalized disturbances consisting of external disturbances and model uncertainties, which can guarantee the estimation errors to converge to zero in finite time. Secondly, a novel nonsingular fast terminal sliding mode attitude cooperative controller based on the finite-time disturbance observer is designed to ensure that the attitude errors of the system converge to zero in finite ***, simulation results are come out to demonstrate the effectiveness of the proposed control law.

关键词： Spacecraft formation flying Finite-time disturbance observer Finite-time control Attitude cooperative control Terminal sliding mode control

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计算布尔差分与布尔偏导数的表格方法

浙江大学学报（工学版） 2006年第9期40卷 1486-1489页

作者：刘观生陈偕雄浙江大学信息与电子工程学系浙江杭州310028

为了简化Reed-Muller型逻辑函数的布尔差分与布尔偏导数的计算过程,提出了一种基于表格的新方法.该方法通过用表格列出Reed-Muller型逻辑函数的1值积项,并对1值积项中相应的位取1到0的变换产生新项来计算一阶布尔差分.二阶布尔差分通过... 详细信息

为了简化Reed-Muller型逻辑函数的布尔差分与布尔偏导数的计算过程,提出了一种基于表格的新方法.该方法通过用表格列出Reed-Muller型逻辑函数的1值积项,并对1值积项中相应的位取1到0的变换产生新项来计算一阶布尔差分.二阶布尔差分通过两次变换产生新积项,并删除相同积项来得到.一阶布尔偏导数作为一阶布尔差分,二阶布尔偏导数通过对积项中相应位作两次连续的1到0的变换来得到.该方法用表格模拟了计算布尔差分与布尔偏导数的过程.应用结果表明,与图形方法相比较,该方法不需要画图,操作简便,可适合求解多变量逻辑函数以及计算机编程.

关键词： RM展开表格方法布尔差分布尔偏导数

Fractional flow reserve measured via left internal mammary artery after coronary artery bypass grafting:Two case reports

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World Journal of Clinical Cases 2023年第13期11卷 3045-3051页

作者： Li-Ying Zhang Yi-Rong Gan Yan-Zhen Wang Ding-xiong xie Zong-Ke Kou Xiao-Qing Kou Yun-Long Zhang Bing Li Rui Mao Tian-Xiang Liang Jing xie Jian-Jian Jin Jin-Mei Yang Gansu Institute of Cardiovascular Diseases Lanzhou 730050Gansu ProvinceChina Provincial Level Key Laboratory for Molecular Medicine of Major Diseases and Prevention and Treatment with Traditional Chinese Medicine Research in Gansu Colleges and Universities Gansu University of Chinese MedicineLanzhou 730000Gansu ProvinceChina Department of Functional Lanzhou First People’s HospitalLanzhou 730050Gansu ProvinceChina Department of Cardiology The First Hospital of Lanzhou UniversityLanzhou 730000Gansu ProvinceChina

BACKGROUND The fractional flow reserve(FFR)has made the treatment of coronary heart disease more ***,there are few reports on the measurement of FFR via the left internal mammary artery(LIMA).Herein,we described the determination of further treatments by measuring FFR via the LIMA in 2 cases after coronary artery bypass grafting(CABG).CASE SUMMARY Case 1 was a 66-year-old male who was admitted due to“chest tightness after CABG.”The patient underwent CABG 7 years prior due to coronary heart *** artery angiography showed complete occlusion of the left anterior descending artery(LAD),and subtotal occlusion of the third segment of the right coronary *** arterial angiography,there was 85%stenosis at the distal end of the anastomosis of the LIMA-LAD *** via LIMA was determined at ***,balloon dilation was performed in Case *** after balloon dilation was *** 2 was a 60-year-old male who was admitted due to“chest tightness after CABG.”The patient underwent CABG 6 years prior due to coronary heart *** was 60%segmental stenosis in the middle segment of LAD and 75%anastomotic *** measured via LIMA was 0.83(negative);thus the intervention was not *** 2 was given drug *** the 3-mo follow-up,there was no recurrence of chest tightness or shortness of breath in both *** are currently under continual *** We provided evidence that FFR measurement via grafted blood vessels,especially LIMA,after CABG is a good method to determine the intervention course.

关键词： Left internal mammary artery Fractional flow reserve Coronary artery bypass Intervention Case report

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原油生物降解规律在海上油田开发中的应用

石油化工应用 2025年第1期44卷 63-67,74页

作者：谢雄陈维华杨勇胡文丽冯缙王雪美王维锋石先亚中海石油(中国)有限公司深圳分公司广东深圳518000

通常原油黏度、密度随油藏埋深的增加呈下降趋势,实际生产实践表明,上述原油性质变化规律不适用于南海东部浅层油藏,有时深度相邻的油藏原油性质差异较大,而且稠油油藏数量明显增多。经过研究发现,浅层油藏原油性质变化规律主要受生物... 详细信息

通常原油黏度、密度随油藏埋深的增加呈下降趋势,实际生产实践表明,上述原油性质变化规律不适用于南海东部浅层油藏,有时深度相邻的油藏原油性质差异较大,而且稠油油藏数量明显增多。经过研究发现,浅层油藏原油性质变化规律主要受生物降解的控制,与深度没有相关性。进一步研究发现,在浅层油藏中,不同的油藏类型对原油性质影响很大,底水油藏生物降解严重,原油性质普遍较差,边水油藏受生物降解影响较轻,油品保存较好。南海东部浅层油藏原油生物降解规律的发现可以快速定性判断原油性质以及底水油藏隔夹层的封闭性,也对浅层油藏的勘探评价取样和开发方案的取值都提出了新的要求,有效推动了地球化学在油田开发中的应用。

关键词：生物降解浅层油藏原油性质变化规律油田开发地球化学

Influence of heat treatment on microstructure and mechanical properties of FeCrNi coating produced by laser cladding

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Transactions of Nonferrous Metals Society of China 2016年第8期26卷 2117-2125页

作者： Fu-bao GONG Jun SHEN Run-hua GAO Tao ZHANG xiong xie Yang LI State Key Laboratory of Mechanical Transmission College of Material Science and EngineeringChongqing University Chongqing 400044 China

The FeCrNi alloy powders were used on the dovetail groove of FV520B steel to fabricate the multilayer laser cladding layers. The effects of heat treatment on the microstructure and mechanical properties of FeCrNi layers were investigated. The results showed that the heat treatment at the temperature ranged from 1073 to 1273 K refined the grains of the substrate materials and removed the soft zone of hardness between the fused zone (FZ) and base material (BM) effectively mainly due to a secondary quench of heat treatment. When the temperature of heat treatment was 1073 K, the maximum ultimate tensile strength (UTS) values of the laser cladding component were obtained. However, the heat treatment at high temperature had a bad effect on wear resistance of coatings at some extent.

关键词： laser cladding microstructure microhardness tensile strength heat treatment

Clinical application of SARS-CoV-2 antibody detection and monoclonal antibody therapies against COVID-19

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World Journal of Clinical Cases 2023年第10期11卷 2168-2180页

作者： Jin Sun Zhen-Dong Yang xiong xie Li Li Hua-Song Zeng Bo Gong Jian-Qiang Xu Ji-Hong Wu Bei-Bei Qu Guo-Wei Song Medical Innovation Research Office Sinopharm Gezhouba Central HospitalThird Clinical Medical College of Three Gorges UniversityYichang 443002Hubei ProvinceChina Department of Respiratory Beijing Jindu Children HospitalBeijing 102208China Innovative Medicine Working Committee of the Chinese Society of Water Resources and Electric Power Medical Science and Technology Beijing 100053China Department of Pediatrics Sinopharm Gezhouba Central HospitalThird Clinical Medical College of Three Gorges UniversityYichang 443002Hubei ProvinceChina Department of Intensive Care First Clinical Medical College of Three Gorges UniversityYichang 443000Hubei ProvinceChina Department of Allergy Immunology and Rheumatology Guangzhou Children's HospitalWomen's and Children's Medical Center Affiliated with Guangzhou Medical UniversityGuangzhou 510000Guangdong ProvinceChina Central Laboratory Shanghai Changning District Maternal and Child HealthMaternal and Child Health Hospital Affiliated with Shanghai East China Normal UniversityShanghai 210000China Department of Respiratory and Critical Care Medicine Sinopharm Gezhouba Central HospitalThird Clinical Medical College of Three Gorges UniversityYichang 443002Hubei ProvinceChina School of Clinical Medicine Beijing Tsinghua Chang Gung Hospital Affiliated to Tsinghua UniversityBeijing 102218China Department of Emergency Children's Hospital Affiliated with Beijing Capital Institute of PediatricsBeijing 100020China

The purpose of this study was to investigate the clinical application of severe acute respiratory distress syndrome coronavirus-2(SARS-CoV-2)specific antibody detection and anti-SARS-CoV-2 specific monoclonal antibodies(mAbs)in the treatment of coronavirus infectious disease 2019(COVID-19).The dynamic changes of SARS-CoV-2 specific antibodies during COVID-19 were *** M(IgM)appeared earlier and lasted for a short time,while immunoglobulin G(IgG)appeared later and lasted *** tests can be used for early diagnosis of COVID-19,and IgG tests can be used for late diagnosis of COVID-19 and identification of asymptomatic infected *** combination of antibody testing and nucleic acid testing,which complement each other,can improve the diagnosis rate of *** anti-SARS-CoV-2 specific antibodies can be used to treat hospitalized severe and critically ill patients and non-hospitalized mild to moderate COVID-19 ***-19 convalescent plasma,highly concentrated immunoglobulin,and anti-SARS-CoV-2 specific mAbs are examples of anti-SARS-CoV-2 antibody *** to the continuous emergence of mutated strains of the novel coronavirus,especially omicron,its immune escape ability and infectivity are enhanced,making the effects of authorized products reduced or ***,the optimal application of anti-SARS-CoV-2 antibody products(especially anti-SARS-CoV-2 specific mAbs)is more effective in the treatment of COVID-19 and more conducive to patient recovery.

关键词： SARS-CoV-2 antibody Detection COVID-19 Monoclonal antibody Clinical application

Efficient plasmon-enhanced perovskite solar cells by molecularly isolated gold nanorods

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Journal of Energy Chemistry 2022年第10期31卷 60-67,I0003页

作者： Yong Hui En-Ming You Qing-Peng Luo Tan Wang Zi-Ang Nan Yu Gu Wen-Han Zhang Zhuan-Yun Cai Liang Chen Jian-Zhang Zhou Jia-Wei Yan Zhao-xiong xie Bing-Wei Mao Zhong-Qun Tian State Key Laboratory of Physical Chemistry of Solid Surfaces and Department of Chemistry College of Chemistry and Chemical EngineeringInnovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province(IKKEM)Xiamen UniversityXiamen 361005FujianChina School of Mechanical Engineering Shanghai Jiao Tong UniversityShanghai 200241China

Perovskite solar cells(PSCs)are becoming a promising candidate for next-generation photovoltaic cells due to their attractive power conversion efficiency(PCE).Plasmonic enhancement is regarded as an optical tuning approach for further improving the PCE of single-junction PSCs toward Shockley-Queisser ***,we introduce molecularly isolated gold nanorods(Au NRs),bearing relatively stronger scattering ability and localized surface plasmonic resonance(LSPR)effect,in the rear side of perovskites in PSCs,for promoting light harvesting and for electrical *** to the larger refractive index and better matched energy level alignment,the 4-mercaptobenzoic acid molecules coated on Au NRs prove to play important dual roles:isolating the metallic Au NRs from contacting with perovskite,and facilitating more efficient charge separation and transport across the interface under the synergetic LSPR effect of Au *** work highlights the capability of the plasmonic approach by nanorods and by molecular isolation,extending nanoparticle-based plasmonic approaches,toward highly efficient plasmon-enhanced PSCs.

关键词： Perovskite solar cells Plasmon-enhanced Gold nanorods Molecular isolation Scattering

1000kV同塔双回输电线路绝缘子串污秽特性

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高电压技术 2009年第9期35卷 2071-2075页

作者：徐涛陈勇孟刚谢梁谢雄杰武汉大学电气工程学院武汉430072 国网电力科学研究院武汉430074

为了研究1000kV同塔双回输电线路绝缘子串的污耐压特性,按照真型布置,依据GB/T4585-2004采用升降法求取绝缘子串的50%污秽闪络电压。内容包括不同型式、不同串形绝缘子的污耐压特性,附灰密度(ρNSDD)、上下表面不均匀积污对污耐压的影... 详细信息

为了研究1000kV同塔双回输电线路绝缘子串的污耐压特性,按照真型布置,依据GB/T4585-2004采用升降法求取绝缘子串的50%污秽闪络电压。内容包括不同型式、不同串形绝缘子的污耐压特性,附灰密度(ρNSDD)、上下表面不均匀积污对污耐压的影响等。指出单V串污耐压特性优于I串污耐压特性;ρNSDD的增加使得绝缘子的U50%下降;上下表面不均匀积污时的U50%高于均匀积污时的U50%等。研究结果对1000kV特高压同塔双回线路绝缘子串的选型及污秽外绝缘配置具有重要指导意义。

关键词： 1000 kV 同塔双回绝缘子串真型布置污耐压污秽外绝缘配置

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基于0-1编码谱技术检测旋转对称函数

浙江大学学报（理学版） 2012年第6期39卷 648-650页

作者：马汝星陈偕雄金华职业技术学院信息学院浙江金华321017 浙江大学信息与电子工程学系浙江杭州310027

分析了旋转对称函数的0-1编码Hadamard变换谱系数的特点,给出了变量数n为素数的旋转对称函数的必要条件,提出了基于0-1编码Hadamard变换检测旋转对称函数的方法,该方法具有可编程操作以及同时可检测其他特殊布尔函数等优点.

关键词：谱技术 0-1编码Hadamard变换旋转对称函数特殊布尔函数检测