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Neural Network Modeling-Based Anti-Disturbance Tracking Control for Hypersonic Flight Vehicle Models

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Neural Network Modeling-Based Anti-Disturbance Tracking Cont...

DOB Identification and Anti-Disturbance Control for Hypersonic Flight Vehicle Systems

第36届中国控制会议

作者： xu lubing YI Yang SHAO Liren ZHENG Weixing College of Information Engineering Yangzhou University School of Computing Engineering and MathematicsUniversity of Western Sydney

ISBN: (纸本)9781538629185

This paper discusses the novel anti-disturbance control algorithm for hypersonic flight vehicle（HFV） models by using neural network（NN） identifier. Different from those existed anti-disturbance results, the unknown exogenous disturbances in HFV models are assumed to be described by the designed NNs with adjustable parameters. Furthermore, the disturbanceobserver-based-control（DOBC） algorithm with adaptive regulation laws is thus presented to estimate the nonlinear *** integrating the estimated value of disturbances with the PI feedback control input, a composite controller based on convex optimization theory is generated to ensure the satisfactory stability and dynamical tacking convergence of HFV models. Finally,a numerical example for HFV models is included to illustrate the effectiveness of the theoretical results.

关键词： anti-disturbance control hypersonic flight vehicle tracking control neural network identifier disturbance observer

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DOB Identification and Anti-Disturbance Control for Hyperson...

DOB Tracking Control Algorithm for Unmanned Aerial Vehicles with T-S Disturbance Modeling

第三十九届中国控制会议

作者： xu lubing Ye Yangfei Yi Yang Jiangsu Aviation Technical College College of Information Engineering Yangzhou University

In this paper, a novel DOB identification and control algorithm is developed for hypersonic flight vehicle. The DOBC technique is combined with the DNNs Models so as to identify attitude and velocity in the presence of disturbance. By using an adaptive method to adjust the weight matrices and compensate the unknown parameters, the control input is built with the Nussbaum gain matrix and feedback control gain. The stability proof is provided by using Lyapunov method. Finally, the simulation results shows DOBC technique is combined with DNNs models can obtained satisfactory dynamical identification and anti-disturbance performance.

关键词： Disturbance-observer-based-control(DOBC) dynamics neural networks(DNNs) hypersonic flight vehicles adaptive control anti-disturbance control

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DOB Tracking Control Algorithm for Unmanned Aerial Vehicles ...

第40届中国控制会议

作者： xu lubing Ye Yangfei Yi Yang Zheng Weixing Jiangsu Aviation Technical College College of Information Engineering Yangzhou University School of Computing Engineering and MathematicsUniversity of Western Sydney

In this paper, a disturbance observer based（DOB） anti-disturbance dynamical tracking control is discussed for unmanned aerial vehicles（UAVs） with unknown disturbances. The designed DOBC algorithm is combined with the T-S fuzzy disturbance models so as to achieve the track of the velocity and the pitching angle of UAVs. On one hand, the T-S fuzzy models are employed to describe the unmodeled nonlinear disturbances, in which a DOB on T-S disturbance model is designed to estimate unknown disturbances. On the other hand, a DOB PI-type feedback controller is proposed to ensure the UAV models stability and convergence of the tracking error to zero. Finally, the simulation results further verify the designed DOB algorithm can obtain the satisfactory anti-disturbance and dynamical tracking performance.

关键词： anti-disturbance control UAV models disturbance observer,T-S disturbance fuzzy,convex optimization algorithm

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某动力涡轮转子连接圆弧端齿的优化设计

机械科学与技术 2023年第6期42卷 969-977页

作者：徐鲁兵廖明夫吕延军西北工业大学动力与能源学院西安710072 中国航发湖南动力机械研究所湖南株洲412002 西安理工大学机械与精密仪器工程学院西安710048

针对圆弧端齿开设螺栓孔会破坏圆弧端齿齿形结构的完整性、产生局部应力集中等问题,建立了带有螺栓预紧的动力涡轮盘轴圆弧端齿连接转子优化模型,基于ANSYS优化平台进行了带螺栓孔的圆弧端齿结构优化设计。分析结果表明,螺栓孔的开设对... 详细信息

针对圆弧端齿开设螺栓孔会破坏圆弧端齿齿形结构的完整性、产生局部应力集中等问题,建立了带有螺栓预紧的动力涡轮盘轴圆弧端齿连接转子优化模型,基于ANSYS优化平台进行了带螺栓孔的圆弧端齿结构优化设计。分析结果表明,螺栓孔的开设对圆弧端齿齿底的强度削弱作用要比对凹(凸)齿本身的大,且将螺栓孔径向分布在圆弧端齿的节圆直径附近有利于降低圆弧端齿结构的应力和改善应力分布;在满足其他应力约束条件下,优化后的圆弧端齿最大等效应力比原始方案降低9.1%,端齿工作面最大接触应力降低44.6%,改善了圆弧端齿齿根附近的应力分布状态,同时也没有对动力涡轮盘轴转子变形产生影响。

关键词：动力涡轮转子圆弧端齿应力优化设计

几何参数对涡轮榫连接微动疲劳寿命的影响:试验

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航空动力学报 2023年第7期38卷 1474-1479页

作者：蒋康河鄢林陈竞炜徐鲁兵毛建兴胡殿印王荣桥中国航发湖南动力机械研究所湖南株洲412002 北京航空航天大学能源与动力工程学院北京100191 北京航空航天大学航空发动机研究院北京100191 中小型航空发动机联合研究中心北京100191 北京航空航天大学航空发动机结构强度北京市重点实验室北京100191

针对涡轮榫连接结构微动疲劳行为及损伤表征开展了试验研究。设计了具有不同压力角、齿形角和齿距的7种榫连接结构,在高低周载荷下开展了疲劳试验,所有构型的榫头第2齿发生微动疲劳失效,并根据试验结果总结了榫连接结构几何参数对微动... 详细信息

针对涡轮榫连接结构微动疲劳行为及损伤表征开展了试验研究。设计了具有不同压力角、齿形角和齿距的7种榫连接结构,在高低周载荷下开展了疲劳试验,所有构型的榫头第2齿发生微动疲劳失效,并根据试验结果总结了榫连接结构几何参数对微动疲劳的影响规律:随着压力角、齿距的增大,微动疲劳寿命逐步降低;而随着齿形角增大,微动疲劳寿命先基本不变,后大幅增加。试验结果为揭示高低周复合疲劳载荷下的榫连接结构失效机理提供了重要依据,为榫连接结构微动疲劳损伤控制参量选取和模型验证提供了数据支撑。

关键词：榫连接结构微动疲劳高低周载荷裂纹萌生几何参数

同方期刊数据库

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高超音速飞行器及其制导控制技术分析

电子技术（上海） 2022年第5期51卷 22-24页

作者：叶杨飞徐露兵江苏航空职业技术学院工程学院无人机应用技术系江苏212134

分析表明,高超音速飞行器作为重要的军事设备,超速的飞行状态令飞行器具备突防协同的作战能力、侦查防控的管控能力,此类飞行器的特征及优势,令世界各国积极投入到高超音速飞行器的研发进程中,强化己身实力,更好应对其他国家的战略封锁... 详细信息

分析表明,高超音速飞行器作为重要的军事设备,超速的飞行状态令飞行器具备突防协同的作战能力、侦查防控的管控能力,此类飞行器的特征及优势,令世界各国积极投入到高超音速飞行器的研发进程中,强化己身实力,更好应对其他国家的战略封锁。基于高超音速飞行器为切入点,探讨高超音速飞行器的特性,并对高超音速飞行器的制导控制技术进行研究。

关键词：智能控制高超音速飞行器制导控制技术

1.6 kW 8 GHz线宽线偏振窄线宽全光纤激光器

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中国激光 2024年第13期51卷 79-86页

作者：许阳房强崔雪龙赵一柱丁香栋许海鑫陈鲁兵侯博文史伟天津大学精密仪器与光电子工程学院天津300072 山东海富光子科技股份有限公司山东威海264209

以白噪声调制的单频激光器作为种子源,基于主振荡功率放大结构搭建了1053 nm窄线宽光纤激光系统,该系统由一级种子源和三级放大器构成。在主放大器中对大模场保偏光纤进行合理的盘绕设计,通过结合976 nm全反向泵浦方式,成功地抑制了模... 详细信息

以白噪声调制的单频激光器作为种子源,基于主振荡功率放大结构搭建了1053 nm窄线宽光纤激光系统,该系统由一级种子源和三级放大器构成。在主放大器中对大模场保偏光纤进行合理的盘绕设计,通过结合976 nm全反向泵浦方式,成功地抑制了模式不稳定效应。最终实现了1053 nm的1.6 k W、8 GHz线偏振窄线宽激光输出,横向光束质量因子(M_(x)^(2))、纵向光束质量因子(M_(y)^(2))和偏振消光比分别为1.090、1.166和~14 d B。实验中未观测到明显的受激布里渊散射效应。

关键词：光纤激光器线偏振窄线宽高功率

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高涂布率轻质抹灰石膏的研制

新型建筑材料 2023年第10期50卷 102-107页

作者：赵守佳徐炉兵李素巧李广涛山东天盛纤维素股份有限公司山东菏泽274051 青青源公司兴义生产基地贵州兴义562400

通过研究建筑石膏种类、轻骨料种类、纤维素醚种类的选择,纤维素醚的黏度和用量,普硅水泥用量及缓凝剂用量等对轻质抹灰石膏的涂布率、抗压强度、拉伸粘结强度等性能的影响,确定了高涂布率轻质高强抹灰石膏的配比组成为:石膏粉88%~90%,... 详细信息

通过研究建筑石膏种类、轻骨料种类、纤维素醚种类的选择,纤维素醚的黏度和用量,普硅水泥用量及缓凝剂用量等对轻质抹灰石膏的涂布率、抗压强度、拉伸粘结强度等性能的影响,确定了高涂布率轻质高强抹灰石膏的配比组成为:石膏粉88%~90%,普硅水泥2.0%~4.0%,轻骨料8.0%,掺黏度为50 000 m Pa·s的EH纤维素醚0.25%~0.35%,蛋白质类缓凝剂用量为0.015%~0.020%。制备的高涂布率轻质抹灰石膏施工顺滑,物理性能符合GB/T 28627—2023的技术要求。

关键词：轻质抹灰石膏高涂布率 EH纤维素醚普硅水泥蛋白质类缓凝剂

Generation of Cenozoic intraplate basalts in the big mantle wedge under eastern Asia

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Science China Earth Sciences 2018年第7期61卷 869-886页

作者： Yigang xu Hongyan LI lubing HONG Liang MA Qiang MA Mingdao SUN State Key Laboratory of Isotope Geochemistry Guangzhou Institute of GeochemistryChinese Academy of SciencesGuangzhou 510640China School of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijing 100049China

The roles of subduction of the Pacific plate and the big mantle wedge(BMW) in the evolution of east Asian continental margin have attracted lots of attention in past years. This paper reviews recent progresses regarding the composition and chemical heterogeneity of the BMW beneath eastern Asia and geochemistry of Cenozoic basalts in the region, with attempts to put forward a general model accounting for the generation of intraplate magma in a BMW system. Some key points of this review are summarized in the following.(1) Cenozoic basalts from eastern China are interpreted as a mixture of high-Si melts and low-Si melts. Wherever they are from, northeast, north or south China, Cenozoic basalts share a common low-Si basalt endmember, which is characterized by high alkali, Fe_2O_3~T and TiO_2 contents, HIMU-like trace element composition and relatively low ^(206)Pb/^(204)Pb compared to classic HIMU basalts. Their Nd-Hf isotopic compositions resemble that of Pacific Mantle domain and their source is composed of carbonated eclogites and peridotites. The high-Si basalt endmember is characterized by low alkali, Fe_2O_3~T and TiO_2 contents, Indian Mantle-type Pb-Nd-Hf isotopic compositions, and a predominant garnet pyroxenitic source. High-Si basalts show isotopic provinciality, with those from North China and South China displaying EM1-type and EM2-type components, respectively, while basalts from Northeast China containing both EM1-and EM2-type components.(2) The source of Cenozoic basalts from eastern China contains abundant recycled materials, including oceanic crust and lithospheric mantle components as well as carbonate sediments and water. According to their spatial distribution and deep seismic tomography, it is inferred that the recycled components are mostly from stagnant slabs in the mantle transition zone,whereas EM1 and EM2 components are from the shallow mantle.(3) Comparison of solidi of garnet pyroxenite, carbonated eclogite and peridotite with regional geoth

关键词： Big mantle wedge Subduction of west Pacific plate Cenozoic intraplate basalt Eastern China East Asia