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China Communications 2015年第9期12卷 35-44页

作者： Yang Mingchuan Li Yuan Liu Xiaofeng tang wenyan Communication Research Center Harbin Institute of Technology Key Lab.for Spacecraft TT&C and Communication under the Ministry of Education Instrument Science and Technology Postdoctoral Station Harbin Institute of Technology

This paper focuses on improving the detection performance of spectrum sensing in cognitive radio(CR) networks under complicated electromagnetic environment. Some existing fast spectrum sensing algorithms cannot get specific features of the licensed users'(LUs') signal, thus they cannot be applied in this situation without knowing the power of noise. On the other hand some algorithms that yield specific features are too complicated. In this paper, an algorithm based on the cyclostationary feature detection and theory of Hilbert transformation is proposed. Comparing with the conventional cyclostationary feature detection algorithm, this approach is more flexible i.e. it can flexibly change the computational complexity according to current electromagnetic environment by changing its sampling times and the step size of cyclic frequency. Results of simulation indicate that this approach can flexibly detect the feature of received signal and provide satisfactory detection performance compared to existing approaches in low Signal-to-noise Ratio(SNR) situations.

关键词： cognitive radio cyclostationary feature detection Hilbert transformation

Nonlinear control and synchronization of a class of nonlinear coupled dynamical systems

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控制理论与应用（英文版） 2013年第4期11卷 623-628页

作者： wenyan tang Zhihua QU Xiaoping FAN Hui LONG School of Information Science and Engineering Central South University Hunan Engineering Laboratory for Advanced Control and Intelligent Automation Department of Electrical Engineering and Computer Science University of Central Florida

In this paper, a control problem for a class of nonlinear coupled dynamical systems is proposed and a continuous nonlinear feedback control law is designed using direct Lyapunov method to solve the proposed control problem. Moreover, synchronization problem for a special case of this class nonlinear coupled dynamical systems is concerned. Numerical examples show the effectiveness and advantage of the designed continuous nonlinear control law and derived synchronization result.

关键词： Nonlinear control Synchronization Lyapunov method

Evaluation of measurement uncertainty based on grey system theory for small samples from an unknown distribution

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Science China(Technological Sciences) 2013年第6期56卷 1517-1524页

作者： HAN LianFu tang wenyan LIU YongMeng WANG Jun FU ChangFeng Institute of Precision Instrument Harbin Institute of Technology School of Electronic Science Northeast Petroleum University

To evaluate measurement uncertainty for small sample size and measurement data from an unknown distribution, we propose a grey evaluation method of measurement uncertainty based on the grey relation coefficient. The uncertainty of measurement is analyzed using grey system theory, and the defects of the grey evaluation model of measurement uncertainty (GEMU) are studied. We then establish an improved grey evaluation model of measurement uncertainty (IGEMU). Simulations show that the precision of IGEMU is greater than that of GEMU, and that sample size has only a small effect on the precision of IGEVU. In particular, IGEMU is applied to evaluating measurement uncertainty for small sample size and measurement data from an unknown distribution. The measurement uncertainty of total profile deviation, which is measured by the CNC gear measuring center, can be evaluated by a combination of IGEMU and the Monte Carlo method.

关键词： grey system theory grey relational coefficient measurement uncertainty tooth profile gear measuring center

Statistical Modeling of the High Altitude Platform Dual-Polarized MIMO Propagation Channel

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China Communications 2017年第3期14卷 43-54页

作者： Mingchuan Yang Shuo Zhang Xinye Shao Qing Guo wenyan tang Communication Research Center Harbin Institute of Technology Harbin 150080 China Instrument Science and Technology postdoctoral Station Harbin Institute of Technology

In order to investigate the benefit of multiple-input multiple-output(MIMO) technique applying to the high altitude platform(HAP), a 2×2 MIMO statistical model, which can accurately describe the channel between HAP and high-speed train, is presented. And dual polarization diversity is particularly considered. Based on first-order three-state Markov chain, the single-input single-output(SISO) channel, a subset of the MIMO channel is first established. The ray tracing approach applied to the digital relief model(DRM) which covers the railway between Xi'an and Zhengzhou is used to obtain the state probability vector and matrix of the state transition probability. The proposed model considers both Doppler shift and temporal correlation, and the polarization correlation and spatial correlation statistical properties of large-scale fading and smallscale fading are analyzed. Moreover, useful numerical results on the MIMO HAP channel outage capacity are provided based on which, significant capacity gains with respect to the conventional SISO case are illustrated. Such statistical channel model can be applied to the future wireless communication system between HAP and high-speed train.

关键词： high altitude platform(HAP) channel model multiple-input multiple-output(MIMO) polarization diversity

Analytical solution for a class of linear quadratic open-loop Nash game with multiple players

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控制理论与应用（英文版） 2006年第3期4卷 239-244页

作者： Xiaohong NIAN Zhisheng DUAN wenyan tang School of Information Science ＆ Engineering Central South University Changsha Hunan 410075 China Center for Systems and Control Department of Mechanics and Engineering Science Peking University Beijing 100871 China

In this paper, the Nash equilibria for differential games with multiple players is studied. A method for solving the Riccati-type matrix differential equations for open-loop Nash strategy in linear quadratic game with multiple players is presented and analytical solution is given for a type of differential games in which the system matrixcan be diagonalizable. As the special cases, the Nash equilibria for some type of differential games with particular structure is studied also, and some results in previous literatures are extended. Finally, a numerical example is given to illustrate the effectiveness of the solution procedure.

关键词： Linear quadratic games Open-loop Nash equilibrium Riccati-type differential equations

基于DTCNN-SVM的工业循环水系统供水泵故障诊断

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振动与冲击 2023年第13期42卷 226-234页

作者：吴佳李明宸唐文妍湘潭大学自动化与电子信息学院湖南湘潭411105

工业循环水系统供水泵的工作状态是影响工业过程安全生产的重要因素,为及时准确地识别供水泵的工作状态,提出一种基于深度迁移卷积神经网络和支持向量机(deep transfer convolutional neural network-support vector machine,DTCNN-SVM... 详细信息

工业循环水系统供水泵的工作状态是影响工业过程安全生产的重要因素,为及时准确地识别供水泵的工作状态,提出一种基于深度迁移卷积神经网络和支持向量机(deep transfer convolutional neural network-support vector machine,DTCNN-SVM)的故障诊断方法。将与工作状态强相关的振动信号进行信号-图像预处理,实现振动时序信号的二维灰度图化;在此基础上,采用融合迁移学习与残差神经网络的深度迁移卷积神经网络模型提取振动信号灰度图特征,并基于模糊不一致性度量对深度学习特征进行约简;采用支持向量机法建立供水泵故障诊断模型。试验结果表明,所提方法在少量样本数据和模型参数下能有效识别供水泵工作状态。

关键词：供水泵故障诊断深度迁移卷积神经网络(DTCNN) 支持向量机(SVM) 模糊不一致性度量

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改进的遗传算法求解桁架的形状优化

力学学报 2006年第6期38卷 843-849页

作者：唐文艳袁清珂广东工业大学机电工程学院机械设计系广州510090

提出将改进的遗传算法用于优化具有离散尺寸、连续形状变量的桁架重量．考虑到离散和连续变量的本质,提出了混合编码方法,其中包括二进制和实数编码,整数和实数编码．采用了凝聚选择法——基于约束和适应度值双重标准,完全适应约束问题... 详细信息

提出将改进的遗传算法用于优化具有离散尺寸、连续形状变量的桁架重量．考虑到离散和连续变量的本质,提出了混合编码方法,其中包括二进制和实数编码,整数和实数编码．采用了凝聚选择法——基于约束和适应度值双重标准,完全适应约束问题的本质．竞争保留最优个体方法延长了优良个体的寿命,使好基因有更大的机会遗传给下一代．算例表明改进的遗传算法是可行且有效的．

关键词：遗传算法混合编码凝聚选择竞争最优保留

新时代民族地区文化软实力之现实检视及提升路径

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广西民族研究 2018年第3期 117-125页

作者：唐文艳广西艺术学院马克思主义学院讲师法学博士南宁530022

民族地区在新时代迎来了良好的全面发展契机,文化软实力的提升是民族地区全面发展的灵魂和根基,提升民族地区文化软实力是社会主义强国建设的重要内容、实现全面发展的应有之义、是增强国家认同的必由之路。基于文化价值吸引力、文化知... 详细信息

民族地区在新时代迎来了良好的全面发展契机,文化软实力的提升是民族地区全面发展的灵魂和根基,提升民族地区文化软实力是社会主义强国建设的重要内容、实现全面发展的应有之义、是增强国家认同的必由之路。基于文化价值吸引力、文化知识生产力、文化体制引导力以及文化产业竞争力的"四力"分析结构,研究分析民族地区文化软实力的形状。在社会主义文化强国建设背景下,民族地区文化软实力的提升应当突出问题导向,以社会主义先进文化为指导增强文化价值吸引力,以科教兴区战略为依托增进文化知识生产力,以全面深化文化体制改革为契机优化文化体制引导力,以协同发展为指引夯实文化产业竞争力。

关键词：文化软实力民族地区社会主义文化强国

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再生型切削颤振稳定性极限的图解法

中国机械工程 2000年第5期11卷 496-498页

作者：张军唐文彦强锡富哈尔滨工业大学计算机与电气工程学院自动化测试与控制系哈尔滨市150001

分析了再生型切削颤振的稳定性极限 ,并提出一种简单的确定稳定性曲线的图解法 ,这种图解法对于分析系统的稳定性更具有直观性。

关键词：再生型切削颤振稳定性极限重叠系数图解法

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表面粗糙度光切显微镜测量系统的研制

红外与激光工程 2012年第3期41卷 775-779页

作者：刘颖郎治国唐文彦北京航天时代激光导航技术有限责任公司中国人民解放军61081部队哈尔滨工业大学自动化测试与控制系

以光切法测量原理为基础,采用CCD摄像头和传统光切显微镜,使用VC开发工具和图像处理技术开发了一套材料表面粗糙度测量系统。根据光切显微镜下材料表面粗糙度图像有明显方向性的特征,使用旋滤波方法对图像进行预处理,并与传统的几种滤... 详细信息

以光切法测量原理为基础,采用CCD摄像头和传统光切显微镜,使用VC开发工具和图像处理技术开发了一套材料表面粗糙度测量系统。根据光切显微镜下材料表面粗糙度图像有明显方向性的特征,使用旋滤波方法对图像进行预处理,并与传统的几种滤波方法进行了比较,同时讨论了滤波窗口的大小和切线方向采用的滤波方法对粗糙度测量结果的影响。该测量系统能够测量新国标中的全部参数,并能进行在线测量。介绍了系统的标定方法,对影响测量精度的主要误差因素进行了分析,并对算术平均偏差Ra为3.2μm的标准粗糙度比较样块进行了测量,测得的结果是:Ra约等于2.93μm,相对误差约为-8.5%,低于该系统的示值允许误差。

关键词：表面粗糙度光切法测量图像处理