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面向深部矿产资源勘探的井中重磁三维交叉梯度联合反演

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中国石油大学学报（自然科学版） 2024年第3期48卷 65-74页

作者：徐凯军季春晖庞朝辉中国石油大学(华东)地球科学与技术学院山东青岛266580 中海石油有限公司海南分公司海南海口571100

单一井中重磁方法解决问题有限,其三维反演具有严重的多解性。开展面向深部矿产资源勘探的井中重磁三维交叉梯度联合反演,采用交叉梯度函数对密度和磁化率进行耦合,综合井中重磁多参数信息进行联合反演,减少反解的多解性,提高深部矿体... 详细信息

单一井中重磁方法解决问题有限,其三维反演具有严重的多解性。开展面向深部矿产资源勘探的井中重磁三维交叉梯度联合反演,采用交叉梯度函数对密度和磁化率进行耦合,综合井中重磁多参数信息进行联合反演,减少反解的多解性,提高深部矿体识别的准确性。通过理论模型和实际资料进行反演分析。结果表明:井中重磁交叉梯度联合反演具有较高的纵向分辨能力,可以显著提高深部矿体识别的准确性,特别是能有效识别深部隐伏矿体。

关键词：井中重力井中磁力交叉梯度三维联合反演

Analysis on Chinese Airline Network Invulnerability

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Journal of Systems Science and Information 2019年第4期10卷 359-372页

作者： Yong YANG kaijun xu Honghui XIANG Department of Flight Technology Civil Aviation Flight University of ChinaGuanghan 618307China AECC Sichuan Gas Turbine Establishment Mianyang 621000China

Air transportation systems are often subject to failures or attacks induced by unexpected abominable weather or temporal airspace occupation, while complex networks have been springing up as a convenient yet efficient tool to represent and analyze various realistic complex systems such as realistic airline system. In terms of Chinese airline network formed during the spring festival timespan, structural empirical research and invulnerability simulation analysis against various deliberate attack strategies were made using complex network theory, where nodes and edges denotes domestic airports and direct flights between them respectively. The analysis results indicate: The presented airline network is a small net-work with scale-free characteristics, and correlation shows remarkable hierarchical structure and obvious assortative characteristics;The network shows obvious invulnerability under deliberate node attack, while shows partly robustness under edge attack even with obvious attack effects against various attack strategies.

关键词： complex networks invulnerability simulation Chinese airline network attack strategies

Experimental Study of the Vibration Phenomenon of Compressor Rotor Blade Induced by Inlet Probe Support

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Journal of Thermal Science 2021年第5期30卷 1674-1683页

作者： YANG Yong XIANG Honghui GAO Jie xu kaijun YANG Rongfei GE Ning Department of Flight Technology Civil Aviation Flight University of ChinaGuanghan618307China AECC Sichuan Gas Turbine Establishment Mianyang621000China College of Energy and Power Engineering Nanjing University of Aeronautics and AstronauticsNanjing210016China

An experimental investigation was conducted in order to understand the installation effects of inlet measurement probes on the vibration characteristics of the rotor blades in two axial *** vibration signal of the rotor blades was analyzed for different layouts of the inlet measurement *** the three-stage axial compressor,the first-order resonance occurs on the first stage of the rotor blades at an engine order excitation condition,which is induced by the cylindrical probe support with a diameter of 10 *** the size of the probe support is decreased,the vibration level reduces *** contrast,for the six-stage axial compressor,the first-order resonance occurs on the first stage of the rotor blades at an excitation source of 6th order,which is triggered by the inlet measurement probes and the upstream *** the number of the inlet measurement probes is changed,the resonance of the rotor blades vanishes.

关键词： aero-engine axial compressor probe support rotor blade vibration strain resonance

基于扎根理论的民航飞行员心理胜任力专家访谈分析

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综合运输 2024年第4期46卷 45-49页

作者：徐开俊刘鼎一王泉川中国民用航空飞行学院飞行技术学院四川德阳618300

探究飞行员心理胜任力指标体系,并初步寻找相关指标,为民航飞行员心理健康教育探究与发展提供基础。运用专家深度访谈法,采用半结构式的访谈方法对了解飞行以及飞行实际操作的专家进行采访,并整理归纳访谈所得的资料。分析专家意见以及... 详细信息

探究飞行员心理胜任力指标体系,并初步寻找相关指标,为民航飞行员心理健康教育探究与发展提供基础。运用专家深度访谈法,采用半结构式的访谈方法对了解飞行以及飞行实际操作的专家进行采访,并整理归纳访谈所得的资料。分析专家意见以及结合在实际过程中的问题,明确飞行员心理胜任力所需指标,同时采用扎根理论与专家访谈相结合对数据深入剖析,对实际经验高度概括总结,为后续研究奠定基础。

关键词：飞行心理健康心理胜任力专家访谈法扎根理论心理品质

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捷联惯导系统IMU误差特性分析

西安航空学院学报 2024年第1期42卷 1-6页

作者：徐开俊董韵杨泳孔令兵魏阳中国民用航空飞行学院飞行技术学院四川广汉618307

为了优化捷联惯导系统惯性测量单元性能,首先,从惯性导航系统工作原理出发,细致梳理捷联惯导误差模型,对惯性测量单元常见误差源分类,重点分析主流民航客机机型捷联惯导惯性测量单元的误差特性;然后,对由5个直线段和4个转弯组成的矩形... 详细信息

为了优化捷联惯导系统惯性测量单元性能,首先,从惯性导航系统工作原理出发,细致梳理捷联惯导误差模型,对惯性测量单元常见误差源分类,重点分析主流民航客机机型捷联惯导惯性测量单元的误差特性;然后,对由5个直线段和4个转弯组成的矩形起落航线,在无误差的理想模式和设置导航级捷联惯导惯性测量单元误差参数模式,分别进行轨迹仿真;最后,在飞行轨迹的姿态、速度、位置误差三维方向对比分析。结果表明,IMU误差诱使飞行轨迹随时间有偏离趋势,高度误差波动始终非常平稳,水平方向误差在一定时间后大幅度发散,表现出惯性导航性能的固有缺陷,即误差随时间的推移逐渐累积,会在一段平稳时间后呈发散趋势。因此在实际使用惯导中可以使用特殊的算法和硬件平台以延长误差发散之前的时间,也可以通过与GPS等数据进行组合导航的方式抑制其发散趋势。研究结果为进一步进行组合导航算法优化奠定基础。

关键词：捷联惯导惯性测量单元误差特性

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动态环境下基于深度学习的视觉SLAM

计算机与数字工程 2024年第5期52卷 1529-1535页

作者：陈明强李奇峰冯树娟徐开俊中国民用航空飞行学院飞行技术学院广汉618307

传统的视觉同时定位与建图(SLAM)技术都是根据对静态环境条件的假设而设计,在动态环境中,运动目标的移动会导致特征匹配失败,进而影响位姿的估计。基于此提出了一种结合卷积神经网络的视觉SLAM算法,通过对ORB-SLAM2算法RGB-D模式前端添... 详细信息

传统的视觉同时定位与建图(SLAM)技术都是根据对静态环境条件的假设而设计,在动态环境中,运动目标的移动会导致特征匹配失败,进而影响位姿的估计。基于此提出了一种结合卷积神经网络的视觉SLAM算法,通过对ORB-SLAM2算法RGB-D模式前端添加结合注意力机制的卷积神经网络动态目标检测线程,在提取图像特征点时剔除动态目标区域,使用静态特征点完成对相机位姿精确的估计。仿真实验在TUM动态数据集下测试,通过多次测试后结果显示改进后的算法的位姿精度比原始算法提高90%以上,并且算法能满足实时性要求。

关键词：同时定位与建图深度学习位姿估计动态场景目标检测

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飞行训练典型科目轨迹仿真实现

舰船电子工程 2024年第6期44卷 98-102,143页

作者：杨泳孔令兵朱家民徐开俊董韵中国民用航空飞行学院飞行技术学院广汉618307

飞行训练科目是飞行学员学习飞行技能、掌握飞机性能、检验飞行技术能力的有效途径。针对科目训练过程中轨迹随意性大、评分标准不统一、事后讲评效果差的实际问题,构建基于捷联惯导微分方程离散化的轨迹仿真系统,对几种典型训练科目的... 详细信息

飞行训练科目是飞行学员学习飞行技能、掌握飞机性能、检验飞行技术能力的有效途径。针对科目训练过程中轨迹随意性大、评分标准不统一、事后讲评效果差的实际问题,构建基于捷联惯导微分方程离散化的轨迹仿真系统,对几种典型训练科目的、特点和标准等因素进行梳理,完成训练科目细分动作的时间序列化,实现标准起落航线、小速度飞行、懒八字等几种典型飞行训练科目的轨迹仿真。结果表明:论文构建的轨迹仿真系统,能准确反映训练科目的训练目标和飞行特征,为提升训练讲评质量及后续量化评估奠定基础。

关键词：飞行训练轨迹仿真标准起落航线小速度飞行懒八字

Experimental Study on the Molten Salt at Micron Scale during the Melting Process

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Journal of Thermal Science 2024年第1期33卷 70-85页

作者： TIAN Ziqian LIAO Zhirong xu Chao FANG Yongzhe JIANG kaijun YUAN Mengdi Key Laboratory of Power Station Energy Transfer Conversion and System Ministry of Education of ChinaSchool of Energy Power and Mechanical EngineeringNorth China Electric Power UniversityBeijing 102206China

The investigation of the melting behaviors of the molten salt at micron scale during the melting process is critical for explaining the solid-liquid phase transition *** this paper,a novel experimental system and analysis method were proposed to study the melting process with three heating rates in the range of1-10℃/min of the solar salt at micron *** solid-liquid boundary morphology and phase transition kinetics of molten salt particles were focused ***,the correlations between liquid fraction,temperature and time under different heating rates were *** solid-liquid boundary morphology was depicted by the visualized experimental set-up,and the instantaneous liquid volume fraction during the non-isothermal phase transition was ***,the correlation between temperature and liquid volume fraction was proposed to reveal the evolution of the solid-liquid boundary with temperature at different heating ***,the non-isothermal phase transition kinetic equation was established by introducing a constant parameter(V_(a,b)),and more kinetic parameters such as 1g V_(a,b) and-lg V_(a,b)/b were *** results showed that the exponent b is not sensitive to the heating rate with a range of 3-5 for solar salt ***,the heating rate influences the value of V_(a,b) and presents a positive ***,the non-isothermal phase transition kinetic equations at different heating rates in the range of 1-10℃/min can be quickly predicted by the proposed improved experimental test *** study could fill the research insufficiency and provide significant guidance for future research on the solid-liquid transition mechanism of molten salts at micron scale.

关键词： molten salt non-isothermal phase transition solid-liquid boundary morphology liquid volume fraction micron scale melting process

Cyclometalated platinum(Ⅱ) complexes with sterically bulky camphor-derived groups as β-diketonate ancillary ligand:a new route to efficiently reducing π-π interactions and Pt-Pt interactions

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Science China Chemistry 2010年第1期53卷 167-172页

作者： LUO kaijun,XIE Yu,xu LingLing,WANG JiangWei,ZHANG LiFang & ZHAO KeQing College of Chemistry and Materials Science,Sichuan Normal University,Chengdu 610068,China College of Chemistry and Materials Science Sichuan Normal University Chengdu China

A new series of mono-cyclometalated square planar platinum(Ⅱ) complexes have been synthesized and the single-crystal X-ray structures of complex 1 and 2 have been *** complexes have the general formula ppyPt(O^O),where ppy is 2-phenylpyridyl,and O^O is β-diketonate ancillary ligands with the acyl substituent group in position 3 of(D)-(+)-***,like the many Pt(Ⅱ) complexes with square-planar geometry,these complexes have plane stacking modes in crystal structure,the sterically bulky camphor-derived groups compel extensive slipping of the molecular stacking planes,resulting in the negligible overlapping of the aromatic ring fragments between molecules and the considerable Pt-Pt *** resolved spectra and a little shifted emission in solid state of complexes show that there is significant reduction of π-π interactions and Pt-Pt interactions,and suggest these complexes may be good candidates for doped phosphorescent organic light emitting diodes(PhOLEDs) and even for nondoped PhOLEDs.

关键词： sterically bulky camphor derivatives crystal structure π-π interactions cyclometalated Pt(Ⅱ) complexes