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Analysis of the Comprehensive Physical Field for a New Flywheel Energy Storage Motor/Generator on Ships

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Journal of Marine Science and Application 2012年第1期11卷 134-142页

作者： Yali Yu yuanxi wang Guosheng Zhang Feng Sun Research Institute of Energy Storage Technology and Application Harbin Engineering University Department of Automation Harbin Engineering University

A novel flywheel energy storage （FES） motor/generator （M/G） was proposed for marine systems. The purpose was to improve the power quality of a marine power system （MPS） and strengthen the energy recycle. Two structures including the magnetic or non-magnetic inner-rotor were contrasted in the magnetostatic field by using finite element analysis （FEA）. By optimally designing the size parameters, the average speed of FEA results of was 17 200 r/m, and the current was controlled between 62 and 68 A in the transient field. The electrical machine electromagnetism design was further optimized by the FEA in the temperature field, to find the local overheating point under the normal operation condition and provide guidance for the cooling system. Finally, it can be concluded from the comprehensive physical field analysis that the novel redundant structure M/G can improve the efficiency of the M/G and maintain the stability of the MPS.

关键词： marine power system flywheel energy storage Halbach array magnet structure comprehensivephysical field motor/generator finite element analysis

Multiscale computational understanding and growth of 2D materials:a review

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npj Computational Materials 2020年第1期6卷 1484-1501页

作者： Kasra Momeni Yanzhou Ji yuanxi wang Shiddartha Paul Sara Neshani Dundar E.Yilmaz Yun Kyung Shin Difan Zhang Jin-Wu Jiang Harold S.Park Susan Sinnott Adri van Duin Vincent Crespi Long-Qing Chen Mechanical Engineering Department Louisiana Tech UniversityRustonLA 71272USA Department of Mechanical Engineering University of AlabamaTuscaloosaALUSA Institute for Micromanufacturing Louisiana Tech UniversityRustonLAUSA Materials Research Institute The Pennsylvania State UniversityUniversity ParkPA 16802USA Department of Materials Science and Engineering The Pennsylvania State UniversityUniversity ParkPA 16802USA 2-Dimensional Crystal Consortium The Pennsylvania State UniversityUniversity ParkPA 16802USA Department of Physics The Pennsylvania State UniversityUniversity ParkPA 16802USA Department of Electrical Engineering Iowa State UniversityAmesIA 50010USA Mechanical Engineering Department The Pennsylvania State UniversityUniversity ParkPA 16802USA Shanghai Institute of Applied Mathematics and Mechanics Shanghai Key Laboratory of Mechanics in Energy EngineeringShanghai UniversityShanghai 200072China Department of Mechanical Engineering Boston UniversityBostonMA 02215USA Department of Engineering Science and Mechanics The Pennsylvania State UniversityUniversity ParkPA 16802USA Department of Mathematics The Pennsylvania State UniversityUniversity ParkPA 16802USA

The successful discovery and isolation of graphene in 2004,and the subsequent synthesis of layered semiconductors and heterostructures beyond graphene have led to the exploding field of two-dimensional(2D)materials that explore their growth,new atomic-scale physics,and potential device *** review aims to provide an overview of theoretical,computational,and machine learning methods and tools at multiple length and time scales,and discuss how they can be utilized to assist/guide the design and synthesis of 2D materials beyond graphene.

关键词： synthesis utilized subsequent

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有线时钟同步的超宽带3D室内定位

机械工程学报 2023年第10期59卷 9-16页

作者：王远西张浩房宏赵荣泳王俊同济大学电子与信息工程学院上海200092 南京沃旭有限公司南京211167

针对三维室内超宽带定位过程中非视距目标定位的静态和动态误差问题,提出一种基于自适应卡尔曼滤波的有线时钟同步3D室内定位测量方法。采用基于到达时间定位原理的非视距(Nonlineofsight,NLOS)误差模型和基站有线时钟同步技术,搭建立... 详细信息

针对三维室内超宽带定位过程中非视距目标定位的静态和动态误差问题,提出一种基于自适应卡尔曼滤波的有线时钟同步3D室内定位测量方法。采用基于到达时间定位原理的非视距(Nonlineofsight,NLOS)误差模型和基站有线时钟同步技术,搭建立体基站空间布局和系统架构。在自适应卡尔曼滤波过程中,通过自适应因子修正增益矩阵,达到在三维空间上减小定位误差。经行业权威机构测试,在室内工业环境下,超宽带3D定位算法水平定位精度优于100 mm,高程定位精度小于200 mm,且漂移小稳定性高,进一步提高车间移动作业定位的精度。

关键词： 3D室内定位立体超宽带卡尔曼滤波有线时钟同步动态误差

Time Transfer Analysis of GPS-and BDS-Precise Point Positioning based on iGMAS Products

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Time Transfer Analysis of GPS-and BDS-Precise Point Position...

第九届中国卫星导航学术年会

作者： Yulong Ge Xuhai Yang Weijin Qin Hang Su Meifang Wu yuanxi wang Shengli wang National Time Service Center Chinese Academy of Sciences Key Laboratory of Precise Positioning and Timing Technology Chinese Academy of Sciences University of Chinese Academy of Sciences School of Astronomy and Space Science University of Chinese Academy of Sciences Institute of Ocean Engineering Shandong University of Science and Technology

International time transfer experiment based on GPS-and BDS-precise point positioning(PPP) technique is carried out using final(ISC) and rapid(ISR) precise satellite clock products provided by iG MAS(international GNSS continuous Monitoring and Assessment System). As a comparison, the same processing is conducted by using COD products provided by the Center for Orbit Determination in Europe(CODE). Experimental data come from observation of seven stations from Multi-GNSS-Experiment(MGEX) and two stations including PT11(PTB) and BRUX(ROB) from time keeping laboratory in 70 days from 5 August to 15 October 2017. With PTB as the center node, the solutions of 8 time-links are formed. In order to verify the type A uncertainty(uA) of time transfer based on GPS-and BDS-PPP by using iG MAS products, this paper compares the differences between GPS-and BDS-PPP results and GPS PPP results using IGR products. The experimental results demonstrate that uA of time transfer based on GPS-and BDS-PPP using iG MAS1 products are roughly equal to CODE products. For the results of time-links based on GPS-and BDS-PPP, the STD of one-day arc solutions can reach better than 0.1 and 0.8 ns for all of processing, while 0.1 and 1 ns were achieved for ten-day arc solutions, respectively. Since uA of GPS-and BDS-PPP time transfer using iG MAS products was up to sub nanosecond, therefore, the experiments can provide a reference for BIPM to use BDS PPP based on iG MAS products for International UTC/TAI comparison. Moreover, this also illustrates iG MAS products is reliable.

关键词： Precise point positioning Time transfer iGMAS GPS BDS

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RISC 例外处理机制的应用研究

航天控制 1998年第1期16卷 28-32页

作者：郭震王东盛王远禧北京控制工程研究所

例外处理机制已经成为当前容错系统的一个重要机制。本文首先介绍ＲＩＳＣ例外处理机制，然后用实例说明其在ＲＩＳＣ基本系统的调试中对于故障的诊断、定位和消除所起到的重要作用。

关键词：计算机系统体系结构例外处理机制容错星载

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钢管自密实再生混凝土短柱偏压受力性能研究

河北农业大学学报 2019年第3期42卷 125-130页

作者：赵虎强杜喜凯王元熙河北农业大学城乡建设学院

通过14根钢管自密实再生混凝土偏压短柱静力试验,研究了再生骨料替代率、膨胀剂掺量、含钢率和偏心距对钢管自密实再生混凝土偏压短柱受力性能的影响,得到了偏压试件的破坏形态、弯矩-曲率曲线、荷载-应变曲线、承载力、延性系数和耗能... 详细信息

通过14根钢管自密实再生混凝土偏压短柱静力试验,研究了再生骨料替代率、膨胀剂掺量、含钢率和偏心距对钢管自密实再生混凝土偏压短柱受力性能的影响,得到了偏压试件的破坏形态、弯矩-曲率曲线、荷载-应变曲线、承载力、延性系数和耗能系数等数据,分析了各因素对偏压试件承载力、延性系数和耗能系数的影响规律。研究表明:增加含钢率可以增大试件的极限承载力、延性系数及耗能系数。掺加一定量的膨胀剂会使得试件极限承载力提高,延性系数和耗能系数降低。而增加再生骨料替代率会使试件的极限承载力降低,延性系数有提高趋势,耗能系数提高。增加偏心距,极限承载力降低。

关键词：钢管混凝土再生混凝土自密实混凝土短柱偏压

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方钢管自密实铁尾矿混凝土短柱偏压力学性能

河北大学学报（自然科学版） 2020年第4期40卷 351-359页

作者：王元熙杜喜凯刘京红河北农业大学城乡建设学院河北保定071001 天津城建大学土木工程学院天津300384

通过10根方钢管自密实铁尾矿混凝土偏压短柱的实验,研究含钢率、铁尾矿粉替代率和偏心距对其力学性能的影响,并将实验承载力与各规范计算所得承载力进行比较.结果表明:试件承载力、延性系数及抗弯刚度随含钢率的增大而显著增长;增大铁... 详细信息

通过10根方钢管自密实铁尾矿混凝土偏压短柱的实验,研究含钢率、铁尾矿粉替代率和偏心距对其力学性能的影响,并将实验承载力与各规范计算所得承载力进行比较.结果表明:试件承载力、延性系数及抗弯刚度随含钢率的增大而显著增长;增大铁尾矿粉替代率,试件抗弯刚度降低,承载力与延性系数无明显变化;增大偏心距,试件承载力、抗弯刚度降低但延性系数提高.

关键词：铁尾矿粉钢管混凝土自密实混凝土偏压短柱

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皮革性能量化评价的研究进展

中国皮革 2008年第1期37卷 19-23,27页

作者：张晓镭陈静王原昕中国皮革和制鞋工业研究院北京100016 陕西科技大学资源与环境学院陕西西安710021 大庆油田有限责任公司研究所黑龙江大庆163453

皮革化学性能、物理性能、材料力学性能、卫生性能以及感官性能的量化评价方法是表征皮革应用性能和质量的重要方法。着重论述了皮革应力松弛性能、蠕变性能和感官性能及其量化评价研究的成果,同时介绍了皮革微观结构参数表征的研究进展。

关键词：量化评价皮革性能

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浅述激光肩颈穴位照射治疗的研究进展

应用激光 2019年第6期39卷 1055-1060页

作者：王远西董岿然赵荣泳上海市激光技术研究所上海200233 同济大学电子信息学院上海200120

针对当今颈椎病高发及发病年轻化的现状,根据在中医学领域人体结构中,颈部有很多穴位,对不同的穴位进行针灸会有不同的效果。依据中医辩证诊疗思想,从穴位治疗角度研究及治疗肩颈部疾病这一种公认的治疗方法。结合目前市场上出现了很多... 详细信息

针对当今颈椎病高发及发病年轻化的现状,根据在中医学领域人体结构中,颈部有很多穴位,对不同的穴位进行针灸会有不同的效果。依据中医辩证诊疗思想,从穴位治疗角度研究及治疗肩颈部疾病这一种公认的治疗方法。结合目前市场上出现了很多针对特定穴位激光医疗保健的产品,对激光保健的原理、作用机理、设备参数的发展历程及研究进展进行了综述,并展望了一种足以方便普通大众足不出户也能享受医疗保健的便携式U型多穴位立体激光颈枕结构设计。

关键词：激光多穴位照射肩颈 U型