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Adaptive robust feedback control of moving target tracking for all-Electrical tank with uncertainty

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Defence Technology（防务技术） 2022年第4期18卷 626-642页

作者： Yu-ze Ma Guo-lai Yang qin-qin sun Xiu-ye Wang Zong-fan Wang The School of Mechanical Engineering Nanjing University of Science and TechnologyNanjing210094China

A moving target tracking control problem for marching tank based on adaptive robust feedback control scheme is addressed.A series of preparations is needed for tank gun before shooting a target,the purpose of this paper is to design a control system to fulfill two requirements in this process:the turretbarrel system of tank needs to be adjusted from off-target position to command position and point to the moving target stably when there are strong uncertainties(modeling error,uncertain disturbance with unknown boundaries and road excitation) in the *** the characteristic of coupled interaction,the first thing we do in this paper is to build a coupled analysis model of turret-barrel system with uncertainty term in state-space ***,an adaptive robust feedback control scheme is proposed by adding adaptive law to overcome the ***,multi-body dynamics software is used to establish the mechanical mechanism of the tank,and DC-motor module is established in SIMULINK environment,thus the target information and tracking error of the control system is collected and transferred,the gear-ball screw is derived directly by the output torque of the DC-motor ***,the control system and the 3D model are combined together by means of Recur Dyn/SIMULINK co-simulation,the turret-barrel system of tank can approximately track the moving target in a certain *** the adaptive robust feedback control,the target action is completely followed when the target location is constantly changing.

关键词： Mechanical system Tank stability Uncertainty Road excitation Adaptive robust feedback control

Adaptive robust control for triple avoidance - striking - arrival performance of uncertain tank mechanical systems

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Defence Technology（防务技术） 2022年第8期18卷 1483-1497页

作者： Zong-fan Wang Guo-lai Yang Xiu-ye Wang qin-qin sun Yu-ze Ma The School of Mechanical Engineering Nanjing University of Science and TechnologyJiangsuPeople's Republic of China

This paper puts forward an unprecedented avoidance-striking-arrival problem aiming to address the need for tank's uncertain mechanical systems on the intelligent *** associated system uncertainties(possibly rapid)are time-varying but bounded(possibly unknown).The goal is to design a controller that enables the tank to aim at and attack the enemy tank while keeping itself(out of the enemy fire zone).The tank maintains this condition until reaching the predefined *** this paper,an approximate constraint following control method is adopted to solve this problem,and the original constraints are creatively divided into two categories:the avoidance-tracking constraint and the striking-arrival *** adaptive robust control method is proposed and consequently verified through simulation *** is proved that the system fully obeys the avoidance-tracking-constraint and strictly obeys the striking-arrival constraint under the control ***,the control of the tank vehicle running system and tank gun bidirectional stabilization system are unified to deal with the control signal delay caused by complex uncertainties on the ***,this paper reduced the delay of signal transmission in the system while solved the avoidance-striking-arrival problem.

关键词： Adaptive robust control Multivariable tank system Uncertainty Constraint following Avoidance-striking-arrival

线上供应链金融平台客户信息安全风险自动评估系统设计

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自动化技术与应用 2024年第6期43卷 116-119页

作者：朱辉袁亮张洁孙琴国网数字科技控股有限公司国网雄安金融科技集团有限公司北京100053 国网汇通金财(北京)信息科技有限公司北京100053

风险因素级别估算过程中,安全风险自动评估权值的绝对误差增加,评估结果可信度降低,由此,提出一种线上供应链金融平台客户信息安全风险自动评估系统。通过分析结果向系统管理员提供周密可靠的安全性分析报告,同时结合评估数据库进行系... 详细信息

风险因素级别估算过程中,安全风险自动评估权值的绝对误差增加,评估结果可信度降低,由此,提出一种线上供应链金融平台客户信息安全风险自动评估系统。通过分析结果向系统管理员提供周密可靠的安全性分析报告,同时结合评估数据库进行系统硬件部分设计。将人工神经网络应用到客户信息安全风险评估中,估算风险因素的级别,建立自动评估模型,模型在经过训练后能够有效实现线上供应链金融平台的客户信息安全风险自动评估。仿真实验结果表明,所设计系统能够有效减少绝对误差,提升评估结果的可信度。

关键词：线上供应链金融平台客户信息安全风险自动评估系统设计

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磁力加热搅拌器转速测量标准方法研究

中国标准化 2024年第6期 168-171页

作者：孙钦密李海滨河南省计量测试科学研究院

为了控制好特殊液体介质的加热混匀搅拌,现已通过对磁力加热搅拌器搅拌子的工作方式进行分析,对比两种不同方式转速准确度的测试,试图找出影响转速测量结果的不确定度因素,并将其进行适度量化。结果发现对搅拌子直接测量的不确定度因素... 详细信息

为了控制好特殊液体介质的加热混匀搅拌,现已通过对磁力加热搅拌器搅拌子的工作方式进行分析,对比两种不同方式转速准确度的测试,试图找出影响转速测量结果的不确定度因素,并将其进行适度量化。结果发现对搅拌子直接测量的不确定度因素影响较小,是转速参数的较佳测量方法,适于日常的量值溯源,从而为计量及日常使用提供标准参考。

关键词：转速校准测量不确定度参考

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芒果苷抑制脂多糖诱导小鼠肺泡巨噬细胞炎症反应的机制研究

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南方农业学报 2024年第7期55卷 1907-1915页

作者：李亚娟方秋果李玉树孙芹芹李舜黄云飞付强华南理工大学生物科学与工程学院广东广州510641 佛山大学动物科技学院广东佛山528225

【目的】探究芒果苷抑制脂多糖(LPS)诱导的炎症反应作用机制,为筛选治疗脓毒症的候选药物提供科学依据。【方法】选取小鼠肺泡巨噬细胞(MH-S)为研究对象,通过CCK-8试剂检测芒果苷对MH-S细胞的毒性作用,根据细胞毒性试验确定芒果苷的作... 详细信息

【目的】探究芒果苷抑制脂多糖(LPS)诱导的炎症反应作用机制,为筛选治疗脓毒症的候选药物提供科学依据。【方法】选取小鼠肺泡巨噬细胞(MH-S)为研究对象,通过CCK-8试剂检测芒果苷对MH-S细胞的毒性作用,根据细胞毒性试验确定芒果苷的作用浓度为100μg/mL,以正常培养的MH-S细胞为对照,使用10μg/mL LPS处理24 h构建体外炎症模型(LPS组),再以100μg/mL芒果苷干预24 h(干预组);通过ELISA检测MH-S细胞上清液中的炎症因子(IL-1β、TNF-α、IL-6和IL-18)含量,采用实时荧光定量PCR检测IL-1β、TNF-α、IL-6和IL-18基因表达情况,并以Western blotting和免疫荧光法检测TLR4/NF-κB信号通路的变化。【结果】芒果苷浓度低于287.60μg/mL时,对MH-S细胞无明显的毒性作用。与对照组相比,LPS组MH-S细胞中的IL-1β、TNF-α、IL-6和IL-18基因相对表达量极显著升高(P<0.01,下同),细胞上清液中的IL-1β、TNF-α、IL-6和IL-18含量显著(P<0.05,下同)或极显著升高;但以芒果苷干预后,IL-1β、TNF-α、IL-6和IL-18基因的相对表达量及其分泌水平均显著降低,表明芒果苷能有效抑制LPS诱导MH-S细胞的炎症反应。此外,LPS组MH-S细胞中的NF-κB基因相对表达量与蛋白表达水平极显著高于对照组,经芒果苷干预后NF-κB基因相对表达量与蛋白表达水平均显著下降,表明芒果苷能有效抑制LPS诱导MH-S细胞中核转录因子的表达;LPS组MH-S细胞表面的TLR4表达水平明显升高,但经芒果苷干预后MH-S细胞表面的TLR4表达水平明显降低,说明芒果苷能有效抑制LPS诱导MH-S细胞表面TLR4的表达。【结论】芒果苷对MH-S细胞的增殖无明显抑制作用,其半数增殖抑制率(IC50)为287.60μg/mL;芒果苷对LPS诱导的MH-S细胞炎症反应具有良好的保护作用,其作用机制可能与抑制TLR4/NF-κB信号通路激活而减少炎症因子的分泌有关。

关键词：芒果苷小鼠肺泡巨噬细胞(MH-S) 脂多糖(LPS) 炎症因子 TLR4/NF-κB信号通路

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一种有机分子的合成及其对有机溶剂中水含量的检测

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化学研究与应用 2024年第3期36卷 668-673页

作者：孙琴冯灿杨帆苟美玲张静邓国伟成都师范学院化学与生命科学学院功能分子结构优化与应用四川省高校重点实验室四川成都611130

设计合成了一种以3,5-二叔丁基-4-羟基苯甲醛为电子给体、三氰基呋喃衍生物为电子受体的新型传感器C1,经^(1)H NMR,^(13)C NMR和HRMS表征,并通过可视化观察和紫外-可见吸收光谱研究C1对四氢呋喃中水含量的定性和定量分析。结果表明:C1... 详细信息

设计合成了一种以3,5-二叔丁基-4-羟基苯甲醛为电子给体、三氰基呋喃衍生物为电子受体的新型传感器C1,经^(1)H NMR,^(13)C NMR和HRMS表征,并通过可视化观察和紫外-可见吸收光谱研究C1对四氢呋喃中水含量的定性和定量分析。结果表明:C1在无水四氢呋喃中最大吸收波长为450 nm,当体系中存在水时,溶液在550~600 nm出现新的吸收峰,颜色由黄色变为紫色;当水的含量在0~2.94%(%V:V)时,590 nm处吸光度与水体积浓度展现出良好的线性关系,线性方程为y=0.069 07X+0.010 6、R^(2)=0.996 16;并且利用手机采集溶液RGB值,可构建RGB-水含量线性曲线判断四氢呋喃中水含量。

关键词：推拉电子结构水含量有机溶剂传感器

Application of rare-earth element Y in refining impure copper

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International Journal of Minerals,Metallurgy and Materials 2015年第5期22卷 453-459页

作者： Hai-hong Li Xue-qin sun Shang-zhou Zhang qin-yi Zhao Guang-zhen Wang School of Environment and Materials Engineering Yantai University

The effects of rare-earth element Y in refining impure copper were investigated in this paper. The composition, microstructures, and corrosion resistance properties of impure copper before and after refinement with Y were investigated using direct-reading spectrometry, inductively coupled plasma atomic emission spectrometry, optical microscopy, scanning electron microscopy, and potentiodynamic polariza- tion measurements. The results show that the concentrations of impurities S, As, Sb, Bi, A1, Cd, and Se are remarkably decreased. Adding an appropriate amount of Y refines the microstructure and enhances the corrosion resistance properties of impure copper in HC1 solution via a purification effect. The formation enthalpies of compounds formed between Y and various impurity elements were calculated on the basis of Miedema＇s theory. The thermodynamic mechanisms of the refinement of impure copper by Y were also discussed.

关键词： copper refining yttrium addition impurities removal microstructure corrosion resistance

Investigation of potential interferences on the measurement of dissolved reactive phosphate using zirconium oxide-based DGT technique

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Journal of Environmental Sciences 2013年第8期25卷 1592-1600页

作者： qin sun Yifei Chen Di Xu Yan Wang Shiming Ding Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes Ministry of Education College of Environment Hohai University State Key Laboratory of Lake Science and Environment Nanjing Institute of Geography and Limnology Chinese Academy of Sciences

A diffusive gradients in thin films （DGT） technique based on hydrous zirconium oxide （Zr-oxide） has been recently developed for the measurement of dissolved reactive phosphate （DRP）. In this study, the detailed performance of the DGT technique is reported. Spiking experiments revealed that several orthophosphate monoester compounds contributed to the Zr-oxide DGT measurements of DRP. However, such a phenomenon is unlikely to occur during field conditions due to the low concentration of organic P in typical natural waters. The presence of Cl- （up to 106 g/L）, SO42- （up to 16 g/L）, HCO3- （up to 817 g/L）, and AsO2- and AsO 3 4 （both up to 1 mg As/L） in solutions had negligible effects on the measurement of DRP. The threshold concentrations of Cl-, SO42- and HCO3- have been increased from previous reports for the measurements of DRP using other adsorbent-based DGT techniques. The capacity for DGT measurements of DRP decreased with increasing solution pH （4.2-9.2）. The lowest capacity （95 μg P/m2 at pH 9.2） was still greater than that of other DGT techniques that are usually used for the measurement of DRP （2-12 μg P/cm2 ）. The Zr-oxide binding gel could be stored for up to 2 years without any aging effect. This period of validity was considerably longer than the ferrihydrite binding gel that is commonly used in present DGT devices （6 months）. The field application revealed that the concentrations of DRP measured in three fresh water samples using the Zr-oxide DGT technique were in agreement with those of the traditional colorimetric method.

关键词： diffusive gradients in thin films (DGT) technique zirconium oxide (Zr-oxide) dissolved reactive phosphate (DRP) interference soil water

水陆二仙丹通过调控磷脂酰肌醇3激酶/蛋白激酶B信号通路治疗糖尿病肾脏疾病的作用及机制研究

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临床肾脏病杂志 2024年第4期24卷 309-318页

作者：饶艳玲孙勤国黄威湖北中医药大学武汉430065 武汉市第三医院中医科武汉430060 武汉市第五医院中医科武汉430050

目的利用网络药理学方法结合体内实验验证,探讨水陆二仙丹治疗糖尿病肾脏疾病(diabetic kidney disease,DKD)的作用机制。方法利用中药系统药理学数据库和分析平台筛选得到水陆二仙丹有效成分和相关作用靶点,通过文献检索补充上述化... 详细信息

目的利用网络药理学方法结合体内实验验证,探讨水陆二仙丹治疗糖尿病肾脏疾病(diabetic kidney disease,DKD)的作用机制。方法利用中药系统药理学数据库和分析平台筛选得到水陆二仙丹有效成分和相关作用靶点,通过文献检索补充上述化学成分和作用靶点信息,进一步关联DKD在疾病数据库中的作用靶点。基于String软件构建蛋白相互作用网络,利用R语言进行富集分析,建立复杂网络模型,采用酶联免疫吸附试验法检测肾脏肿瘤坏死因子α、白细胞介素(interleukin,IL)6、IL-1β水平,蛋白免疫印迹法检测验证关键蛋白表达,对水陆二仙丹治疗DKD的药效作用机制进行初步预测。结果筛选得到水陆二仙丹中376个具有潜在DKD治疗作用的靶点。“成分-疾病-靶点”网络图提示山柰酚、黄芪甲苷等是水陆二仙丹中发挥DKD治疗作用的主要活性成分。其常见通路与磷脂酰肌醇3激酶(phosphatidylinositol 3 kinase,PI3K)/蛋白激酶B(protein kinase B,Akt)通路、晚期糖基化终产物-晚期糖基化终产物受体通路等有关。实验结果表明,水陆二仙丹有效降低糖尿病大鼠炎症因子水平,提高肾病蛋白和足突蛋白表达,降低p-PI3K/PI3K、pAkt/Akt蛋白的表达。结论水陆二仙丹可能通过调控PI3K/Akt信号通路,抑制炎症反应和肾脏组织纤维化起到治疗DKD的作用,对DKD的治疗具有多成分、多靶点、多途径的特点。

关键词：糖尿病肾脏疾病药理学水陆二仙丹