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中国测试杂志

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二阶滑模离心-振动试验系统的振动控制
王跃钢1, 左朝阳1,2, 文超斌1, 郭志斌1
(1. 第二炮兵工程大学自动控制系,陕西 西安 710025; 2. 解放军96165部队,江西 上饶 334109)
摘  要:针对离心-振动试验系统的振动位移跟踪控制存在参数不确定性和干扰的问题,提出一种基于二阶滑模的振动位移跟踪控制方法。该方法基于高阶滑模控制基本原理,通过建立离心-振动复合试验系统数学模型,利用李雅普诺夫第二法设计出二阶滑模振动位移控制律。仿真结果表明:该方法在2 s内能够完成位移跟踪,跟踪准确度达到0.001 m,能够有效降低系统抖振,实现振动位移跟踪的精确定位,具有较高的控制精度和可靠性。
关键词:振动控制;高阶滑模;位移跟踪;离心力
中图分类号:TP273;TP391.9;TJ760.6+28;V417+.4      文献标志码:A      文章编号:1674-5124(2013)06-0001-04
Vibration control based on second-order sliding mode for centrifuge
force-vibration test system
WANG Yue-gang1, ZUO Zhao-yang1,2, WEN Chao-bin1, GUO Zhi-bin1
(1. Department of Automatic Control Engineering,the Second Artillery Engineering
University,Xi’an 710025,China;
2. Unit 96165 ,Shangrao 334109,China)
Abstract: With the second-order sliding mode control theory, a sliding mode vibration control method was presented for a centrifuge force-vibration test system to solve parameter variations and external disturbances. Firstly, the basic idea of the higher-order sliding mode control was introduced, then the mathematical model of centrifuge force-vibration test system was described and the control law of the second-order sliding mode vibration displacement was derived based on Lyapunov second method. The simulation results show that the method accomplishes positioning track within 2 s, and position track accuracy reaches 0.001 m. The method can effectively eliminate system chattering and achieve precise positioning for vibration tracking maneuver with high precision and reliability.
Key words: vibration control; higher-order sliding mode; displacement trace; centrifuge force


基于ARMA模型的高速列车隧道压力波预测研究


陈春俊, 聂锡成, 张  洁
(西南交通大学机械学院,四川 成都 610031)
摘  要:为研究高速列车通过隧道时车外气压波动规律以提供预测信号给车内保压控制系统,对典型的实测隧道气压波动信号进行分析,建立ARMA预测模型。首先将实测的非平稳气压波动信号转化成标准正态平稳时间序列,然后利用这些参考信号建立时间序列模型,并采用非线性最小二乘法进行模型参数估计,最后利用该模型对信号进行预测。通过实测信号与预测信号进行对比,取得了一定的预测精度,可以达到预测要求。
关键词:气压波动;ARMA模型;非平稳信号;平稳时间序列;预测
中图分类号:U292.91+4;P424.3;TP273+.5;TM930.12    文献标志码:A    文章编号:1674-5124(2013)06-0005-05
Prediction of tunnel pressure wave for high-speed train based on ARMA model
CHEN Chun-jun, NIE Xi-cheng, ZHANG Jie
(School of Mechanical Engineering,Southwest Jiaotong University,Chengdu 610031,China)
Abstract: For investigating the air pressure fluctuation outside the high-speed train running in the tunnel, orderly obtaining predictive signal and sending it to the holding pressure control system, the authors established ARMA forecasting model by analyzing the typical pressure fluctuation signal measured in the tunnel. Firstly, the measured pressure fluctuation signals of non-stationary were changed into standard normal stationary time series. Then these reference signals were used to establish time series model. And the model parameters were estimated with non-linear least squares method. Finally, the signal was predicted by the established model. Through comparing the predicted signal with the measured signal, good prediction accuracy was achieved and forecast was realized.
Key words: air pressure fluctuation; ARMA model; non-stationary signal; stationary time series; forecast



光反射干涉谱新方法测试薄膜厚度和光学常数
廖  荣1,2, 张海燕1, 杨铁铮2, 谈  锬2, 范  宇2, 王道然2
(1. 广东工业大学材料与能源学院,广东 广州 510090; 2. 华南理工大学电子与信息学院,广东 广州 510641)
摘  要:依据测量薄膜和光之间相互作用可确定薄膜特性的原理,并基于光反射干涉谱与德国最新研发薄膜分析软件SCOUT的新方法可测量已知或未知材料的多层薄膜厚度及其折射率n、消光系数k。通过实际测试证明:该方法可测试单晶硅、玻璃、ITO玻璃基底上沉积薄膜的厚度,样品基本不需要特别准备,对样品无破坏性,测试精准。理论上可以测量所有透光或半透光薄膜的厚度和光学常数,操作非常简便,适合于镀膜行业的在线检测和实时监控,且SCOUT软件在多层膜及多种材料的研发、制备等方面具有应用潜力。
关键词:纳米薄膜;光反射干涉谱;薄膜厚度;折射率;消光系数
中图分类号:O484.5;O435.1;TM930.12;TH744.3      文献标志码:A     文章编号:1674-5124(2013)06-0010-04
New method for measuring thickness and optical constants of thin film based
on light reflection interference spectrum
LIAO Rong1,2, ZHANG Hai-yan1, YANG Tie-zheng2, TAN Tan2, FAN Yu2, WANG Dao-ran2
(1. School of Materials and Energy,Guangdong University of Technology,Guangzhou 510090,China;
2. School of Electronic and Information Engineering,South China University of Technology,
Guangzhou 510641,China)
Abstract: According to the principle that the properties of the film can be determined by measuring the interaction between the film and the light, and based on the light reflection interference spectrum and Germany’s new SCOUT thin film analysis software, a new method was utilized to measure the thickness, refractive index and extinction coefficient of the known or unknown multilayer materials. This method can be applied to measure the thickness of the film on monocrystalline silicon, glass and ITO glass substrates and it does not require special preparations and no destruction for samples and the results are accurate. Theoretically the thickness and optical constants of all transparent or semi-transparent films can be determined with the method. It is convenient to operate, and particularly suitable for the on-line detection and real-time monitoring in coating industry. The SCOUT software has wide application in R&D and preparation of multilayer film and multi-materials.
Key words: nanometer film; optical reflection interference spectrum; film thickness; refractive index; extinction coefficient



LED驱动电源的电磁兼容测试及整改
孔强强, 宋庆军, 张玉华
(济宁国家半导体及显示产品质量监督检验中心,山东 济宁 272000)
摘  要:LED照明产品在设计过程中引入的大量非线性电子元件,会产生一定的无线电骚扰和谐波,产品的电磁兼容性能不易满足现行的国际与国家标准。该文以一照明LED灯为例,针对其较易不合格的EMC项目如电源骚扰电压和辐射骚扰的测试,分析其不合格原因,给出LED驱动电源EMC的整改思路。对整改措施的有效性和可行性分析,也可为其他电子设备的EMC整改提供参考。
关键词:LED驱动电源;电磁兼容性;电源端子骚扰电压;辐射骚扰场强;整改措施
中图分类号:TM923.34;TM133;TN972+.1;TM937.1     文献标志码:A    文章编号:1674-5124(2013)06-0014-03
EMC test and rectification of LED drive power
KONG Qiang-qiang, SONG Qing-jun, ZHANG Yu-hua
(China National Semiconductor & Display Products Quality Supervision and Inspection Center,
Jining 272000,China)
Abstract: A certain degree of radio disturbance and harmonic wave will occur since a large number of non-linear electronic components are used in LED production, and EMC test results of the products are not ideal according to current international and national standards. Based on test practice, the authors demonstrated some failure items in EMC test such as power failure disturbance voltage and radiation harassment, analyzed the failure causes and gave corrective ideas. It has certain reference value for the EMC design of other electronic equipments.
Key words: LED drive power; EMC; mains terminal disturbance voltage; radiated disturbance field strength; rectification measure


驻波比测试仪的校准方法及不确定度分析
孟令刚1, 郭海帆2, 张学波1
(1. 中国测试技术研究院,四川 成都 610021; 2. 西南电子设备研究所,四川 成都 610036)
摘  要:驻波比测试仪是无线通信领域进行电缆故障定位的常用仪器,该仪器能够通过测量回波损耗或者驻波比,来对电缆进行故障定位。该文针对驻波比测试仪的溯源问题,介绍了其工作原理,以安捷伦的驻波比测试仪N9330B为例,提出该仪器的基本校准方法和实施步骤,并就其核心参数回波损耗进行不确定度分析和评估,从而为此类仪器提供溯源,能够更准确的定位电缆故障。
关键词:驻波比;回波损耗;天线;无线通信
中图分类号:TN015;TM934.75;TN821;TM930.115     文献标志码:A    文章编号:1674-5124(2013)06-0017-03
Calibration method and uncertainty evaluation for cable
and antenna tester
MENG Ling-gang1, GUO Hai-fan2, ZHANG Xue-bo1
(1. National Institute of Measurement and Testing Technology,Chengdu 610021,China;
2. Southwest China Research Institute of Electronic Equipment,Chengdu 610036,China)
Abstract: Cable and Antenna Tester(CAT) is common instrument for fault location by measuring return loss or standing-wave ratio(SWR). For tracing to the source,this article introduce the work principle by taking Agilent N9330B as an example, discuss the basic calibration methods and realizing steps,and evaluation the measurement uncertainty for SWR,the main parameter of CAT. The research for the calibration methods of CAT is important for tracing to the source and improving its performance of fault location.
Key words: SWR; return loss; antenna; wireless communication


电解质与电极界面产物电导率测试与研究
孔  伟1, 赵芯舫2
(1. 乌海职业技术学院,内蒙古 乌海 016000; 2. 北京海湾联纵安全科技有限公司,北京 100024)
摘  要:为研究氧化钇稳定氧化锆(YSZ)电解质材料与La1-xMxNiO3(M=Ca、Sr、Mg)电极材料界面反应物的电输运特性,采用二端法测试样品直流电导率和交流电导率。结果表明:样品的直流电导率、交流电导率均随温度的升高而增加,交流电导率在低频区基本不变,在高频区随频率增大而增大,解释了电极的电输运性能,综合比较掺杂Ca的样品性能比较优良。
关键词:电解质物理学;电输运特性;固相反应法;频率
中图分类号:O657.13;O646.5;TM911.4;TM930.12     文献标志码:A     文章编号:1674-5124(2013)06-0020-04
Testing and research conductivities of electrolyte and the electrode interface products
KONG Wei1, ZHAO Xin-fang2
(1. Wuhai Vocational and Technical College,Wuhai 016000,China;
2. Beijing Gulf Link Zone Security Technology Co.,Ltd.,Beijing 100024,China)
Abstract: For studying the electronic transport properties of the interface reactants produced by yttria stabilized zirconia (YSZ) electrolyte materials and La1-xMxNiO3 (M=Ca, Sr, Mg) electrode materials, this paper tested DC conductivity and AC conductivity of samples with the two-terminal method, the results show that the DC and AC conductivities of the samples increased with the increasing temperature, and the AC conductivity is almost not changed in the low frequency region, and it increases with frequency in the high frequency region, which explain the electrical transport properties of the electrodes. Comprehensive comparison results indicate the performance of Ca-doped sample is more excellent.
Key words: electrolyte physics; electronic transport property; solid state reaction method; frequency


发射场地面设施健康状态管理研究综述
李建增1, 路广勋1, 王东锋2
(1. 军械工程学院,河北 石家庄 050003; 2. 总装备部工程设计研究所,北京 100028)
摘  要:该文综述航天发射场地面设施质量管理的现状和PHM系统的体系结构、特点及应用现状,阐述需要解决的监测系统、状态评估、故障预测、决策支持系统及验证确认等关键技术的常用方法,并分析PHM系统在发射场地面设施保障体系中的发展方向。
关键词:健康状态管理;发射场地面设施;综述;PHM系统
中图分类号:N945.17;V555;TP277;TP274         文献标志码:A        文章编号:1674-5124(2013)06-0024-04
Research on prognostic and health management system of spaceport ground facilities
LI Jian-zeng1, LU Guang-xun1, WANG Dong-feng2
(1. Ordnance Engineering College,Shijiazhuang 050003,China;
2. Beijing Special Engineering and Designing Institute,Beijing 100028,China)
Abstract: The current situation is presented for the quality management of spaceport ground facilities and for the architecture, features and application of PHM system in this paper. The key technology solutions are expounded, such as monitoring systems, condition assessment, failure prediction, decision support systems, verification, confirmation, and so on. Meanwhile, the development direction of the PHM system is analyzed for the security system of spaceport ground facilities.
Key words: health management; spaceport ground facility; summarize; PHM


基于梯度的自适应椒盐噪声滤波算法
王  暐, 王春平, 付  强
(军械工程学院,河北 石家庄 050003)
摘  要:针对传统中值滤波方法不能有效保持图像细节信息和对图像适应能力差的问题,提出一种改进的椒盐噪声滤除算法。算法基于先检测、后滤波的思想,根据图像的极小梯度矩阵自适应计算噪声阈值,提高了噪声检测的准确性;为了更好地保持图像细节,对检测出的噪声像素进行多窗口中值滤波。多组去噪实验表明:所提算法对污染程度不同的图像具有良好的适应性,在滤除噪声的同时还可以有效还原图像边缘等细节信息。
关键词:椒盐噪声;自适应滤波;中值滤波;图像
中图分类号:TP18;TP752;TN949.6+3;TB535+.2       文献标志码:A      文章编号:1674-5124(2013)06-0028-04
Grad based self-adapt image filtering algorithm for salt and pepper noise
WANG Wei, WANG Chun-ping, FU Qiang
(Ordnance Engineering College,Shijiazhuang 050003,China)
Abstract: An improved image filtering algorithm on the basis of grad for salt and pepper noise was presented in this paper. The algorithm is developed by two steps. Firstly, the algorithm computed adaptively noise threshold based on the grey grad matrix of the input image. Then the advanced veracity of the noise was detected. To improve the image quality, the multi-window median value was introduced to filter noise pixels. The experimental results show that the proposed algorithm has a good performance in noise filtering, and also can restore the edges of the original image well.
Key words: salt and pepper noise; self-adapt filter; standard median filter; image


LED照明的杂散光分析与散热研究
赵  宁
(深圳职业技术学院,广东 深圳 518055)
摘  要:针对LED照明杂散光的形成原因和处理方法,以及LED照明系统散热问题的产生和结温对灯具寿命和发光率的影响,完善LED照明灯具的设计,利用照明灯具的特点,以目前LED照明灯具采用的散热方式和杂散光的处理形式为基准,采用对比测试的方法对灯具样品进行检验测试。通过对检测结果的分析,解决了LED照明的散热设计中涉及到的关键问题。
关键词:LED照明;杂散光;散热设计;结温
中图分类号:J914;O436.3;TM923.34;TN364+.2       文献标志码:A      文章编号:1674-5124(2013)06-0032-04
Stray light analysis and thermal design for LED lighting
ZHAO Ning
(Shenzhen Vocational and Technical College,Shenzhen 518055,China)
Abstract: According to the causes and treatment of stray light, dissipation problem and junction temperature influence on the lamp lifetime and emission rate for LED lighting system, the author improved the design of LED lighting. Using the characteristic of lighting lamps and taking the heat and stray light treatments of current LED lighting as basis, lamp samples were tested by the comparison test method. Through analyzing the test results, the author solved the key problems involved in the thermal design of LED lighting.
Key words: LED lighting; stray light; thermal design; junction temperature


我国生活饮用水中铅、砷检测能力验证分析
谭和平, 史谢飞, 徐文平
(中国测试技术研究院,四川 成都 610021)
摘  要:分析2012年由中国测试技术研究院承担的国家认监委能力验证项目“CNCA-12-A08生活饮用水中重金属及无机阴离子的检测”中铅、砷的能力验证结果,对生活饮用水中铅、砷检测方法进行比较和探讨。能力验证结果表明:ICP-MS法测定铅和砷的结果满意率最高,测定结果中位值及平均值与理论值最为接近。
关键词:生活饮用水;铅;砷;能力验证;方法比较
中图分类号:X824;O613.3;O614.43+3;TB99         文献标志码:A       文章编号:1674-5124(2013)06-0036-03
Analysis of proficiency testing for detecting lead and arsenic in drinking water
TAN He-ping, SHI Xie-fei, XU Wen-ping
(National Institute of Measurement and Testing Technology,Chengdu 610021,China)
Abstract: The result of the proficiency testing (PT) of lead and arsenic which was part of the work of the project “CNCA-12-A08 Determination of heavy metals and inorganic anions in drinking water” was analyzed. This project was organized by the certification and accreditation administration of the people’s republic of China (CNCA) and undertaken by the National Institute of Measurement Testing Technology in 2012. The different methods used in the PT were compared. The results of PT showed that the ICP-MS was the optimal method to determine lead and arsenic in drinking water for the highest satisfaction rate, and that the median value and the mean value were most close to the theoretical value.
Key words: drinking water; lead; arsenic; proficiency testing; method comparison


微波消解地质样品方法探讨
张卫国1,2, 陈文梅2
(1. 西安科技大学地质与环境学院,陕西 西安 710054;
2. 中国矿业大学(北京)煤炭资源与安全开采国家重点实验室,北京 100083)
摘  要:该文利用UltraCLAVE微波消解仪对地质样品进行消解,提出消解用酸的种类和用量,以及消解过程中的一些注意事项。方法优化微波消解的实验条件,速度快,污染少,操作简便安全,消解能力强且效果好,能满足地质样品简单、快速、批量分析的要求。
关键词:微波消解;地质样品;酸配比;时间
中图分类号:P575;O452;TN123;TM930.12          文献标志码:A       文章编号:1674-5124(2013)06-039-03
Research of microwave digestion method for geological samples
 ZHANG Wei-guo1,2, CHEN Wen-mei2
(1. College of Geology and Environment,Xi’an University of Science and Technology,Xi’an 710054,China;
2. State Key Laboratory of Coal Resources and Safe Mining,China University of Mining and Technology,
Beijing 100083,China)
Abstract: This paper uses UltraCLAVE microwave digestion instrument for geological sample digestion, puts forward the resolution with the variety and dosage of acid. Results show that some matters need attention in the process of digestion. The method of microwave digestion optimizes experimental conditions, can meet the needs of fast speed, less pollution, easy to operation, safety, digestion ability and the good effect, and be suitable for the geological sample analysis.
Key words: microwave digestion; geological sample; acid ratio; time


四川泸州红层区浅层地下水水化学特征分析
陈  倩1,2, 毛  郁3, 李  成3
(1. 成都理工大学地质灾害防治与地质环境保护国家重点实验室,四川 成都 610059;2.四川省地质工程勘察院,四川 成都 610071;
3. 四川省地质调查院,四川 成都 610081)
摘  要:为进一步掌握地下水水质变化趋势、认识地下水水文地球化学特征及变化规律、确定主要化学反应类型,对红层区浅层地下水控制性水样化学指标进行描述性分析、统计分析及离子比例系数分析,总结区内主要浅层地下水类型及水化学特征;结合Piper三线图及饱和指数分析,初步揭示该区地下水循环规律及形成作用主要受地下水浅表循环特征及近水平岩层中的矿物成分影响。分析表明:研究区地下水化学作用类型主要有溶滤作用、蒸发浓缩作用、阳离子交换吸附作用。
关键词:红层浅层地下水;水化学特征;化学过程;旱区
中图分类号:P331.3;R123.1;X824(713LZ);P342      文献标志码:A     文章编号:1674-5124(2013)06-0042-04
Hydrochemistry characteristics of shallow groundwater in redbed of Luzhou,Sichuan
CHEN Qian1,2, MAO Yu3, LI Cheng3
(1. State Key Laboratory of Geohazard Prevention and Geoenvironment Protection,
Chengdu University of Technology,Chengdu 610059,China;
2.Sichuan Institute of Geological Engineering Investigation Chengdu 610071,China;
3. Sichuan Institute of Geological Survey,Chengdu 610081,China)
Abstract: In order to know more about the change trend of the quality of Luzhou shallow groundwater, the hydrogeochemical characteristic and its change rules, and the main chemical reaction types, the chemistry characteristics of shallow groundwater in Luzhou area were summarized through the descriptive analysis, statistical analysis and ion proportionality coefficient analysis. With the Piper graphs and the saturation index analysis, the authors revealed the cycle characteristic of the groundwater and that the leaching, evaporation, adsorption, cation exchange are main chemical processes in the study area.
Key words: redbed shallow groundwater; hydrochemistry characteristic; chemical processes; arid area


新型PVC膜锌离子选择性电极研究
刘新露, 王  莹, 谯康全, 吴  宇, 苟亚光
(四川理工学院化学与制药工程学院,四川 自贡 643000)
摘  要:研制以3,5-二溴水杨醛二缩邻苯二胺为中性载体的新型聚氯乙烯(PVC)膜锌离子选择性电极。该电极对Zn2+具有良好的选择性,呈现出近能斯特电位响应,响应线性范围为1.0×10-5~1.0×10-1 mol/L,检出限8.0×10-6 mol/L,斜率为36.8 mV/dec。电极的响应时间为55 s,在连续使用一个月后其电位响应性能未见下降。电极的响应机理通过交流阻抗技术进行初步研究,可应用于工业废水、饲料、药品等样品中锌含量的检测。
关键词:PVC膜;中性载体;3,5-二溴水杨醛二缩邻苯二胺;Zn2+;离子选择性电极
中图分类号:O657.15;O614.24+1;TS207.3;TQ406.7    文献标志码:A     文章编号:1674-5124(2013)06-0046-04
Study on new zinc(II)-selective PVC membrane electrode
LIU Xin-lu, WANG Ying, QIAO Kang-quan, WU Yu, GOU Ya-guang
(College of Chemistry and Pharmaceutical,Sichuan University of Science and Engineering,
Zigong 643000,China)
Abstract: A new PVC membrane electrode based N,N′-bis(3,5-dibromosalicylaldehyde)-1,2-phenylenediamine as the neutral carrier was fabricated. This electrode displays a good selectivity to Zn2+ and exhibits a near-Nernstian potential response for Zn2+ over a linear range of 1.0×10-5-1.0×10-1 mol/L with a detection limit of 8.0×10-6 mol/L and a slope of 36.8 mV/decade. The response time of the electrode is 55 s and it can be used at least for one month without considerable divergence in potential. The response mechanism was primarily discussed in view of the A.C. impedance technique. The electrode can be applied to determine zinc in real samples such as industrial effluent, feed and medicine.
Key words: PVC membrane; neutral carrier; N,N′-bis(3,5-dibromosalicylaldehyde)-1,2-phenylenediamine; Zn2+; ion-selective electrode


水中汞的电感耦合等离子体-质谱法测定
赵小学1, 赵宗生1, 王玲玲2
(1. 济源市环境监测站,河南 济源 459000; 2. 河南省环境监测中心,河南 郑州 450004)
摘  要:为解决水中汞不稳定以及易吸附而引起记忆效应的问题,建立分析水中汞的电感耦合等离子体质谱新方法,汞标准溶液中加金形成金汞齐,采用200 μg/LAu2+-5%HNO3溶液作为清洗液,选取Rh103作为内标元素。结果标明:在79 d内,汞溶液的标准曲线稳定,其相关系数在0.999 3~0.999 8之间,仪器检出限在1.15×10-3~3.11×10-2 μg/L范围内。该方法分析水中痕量汞具有检出限低、数据准确性高、再现性好的特点,所用试剂种类少且毒性小。
关键词:汞;稳定性;电感耦合等离子体-质谱仪;记忆效应
中图分类号:X832;O657.63;O614.24+3;TB99       文献标志码:A       文章编号:1674-5124(2013)06-0050-03
Determining mercury in water by ICP-MS
ZHAO Xiao-xue1, ZHAO Zong-sheng1, WANG Ling-ling2
(1. Environmental Monitoring Station of Jiyuan,Jiyuan 459000,China;
2. Environmental Monitoring Centre of Henan Province,Zhengzhou 450004,China)
Abstract: The new method for determining mercury in water by inductively coupled plasma-mass spectrometry (ICP-MS) was established to solve the problem of its great instability and absorption which strongly caused memory effect on instrument. The new method included contents as follows: adding gold ion solution to mercury standard curve solution to formulate gold amalgamation, and choosing 200 μg/LAu2+-5%HNO3 as cleaning solution and 103Rh as internal standard element respectively. The results showed:the standard curve solution was greatly stable in 79 days, the correlation coefficient of its regression equation was between 0.999 3 and 0.999 8, and instrument detection limit was in the range of 1.15×10-3-3.11×10-2 μg/L. This method to determine trace mercury in water had its own characteristics such as low detection limit and toxicity, high accuracy and precision, as well as less typical and toxic reagent.
Key words: mercury; stability; ICP-MS; memory effect


RP-HPLC法测定大鼠血清中NI221的含量
张  莉1, 李  东2, 肖正华1, 张梦军1, 郭嘉伟1, 周  娟1, 李  滨3,张惠静1
(1. 第三军医大学药学院药物分析与分析化学教研室,重庆 400038; 2. 第三军医大学学员旅,重庆 400038;
3. 重庆市科学技术研究院,重庆 401123)
摘  要:建立一种快速、准确测定大鼠血清中NI221含量的RP-HPLC分析方法。以阿魏酸为内标物,360 μL血清样品经冰冻乙腈蛋白沉淀处理后,取20 μL上清进样分析;色谱柱为Diamonsil C18柱(200 mm×4.6 mm×5 μm),流动相组成为甲醇∶0.05%的磷酸=55∶45(用氢氧化钠调节pH=2.5),流速为1.0 mL·min-1,紫外检测波长为302 nm,柱温为室温。血清中NI221浓度在0.15~20 μg·mL-1范围内呈线性,相关系数r=0.999 6,样品加标回收率为97.36%~112.50%(n=15),日内和日间精密度RSD均<15%。所建立的RP-HPLC方法准确可靠,重现性好,可用于临床前药代动力学研究中NI221血药浓度的测定。
关键词:NI221;阿魏酸;反相高效液相色谱法;血药浓度
中图分类号:R917;O657.7+2;R446.11;R979.1      文献标志码:A       文章编号:1674-5124(2013)06-0053-04
Determination of NI221 in rats serum by RP-HPLC
ZHANG Li1, LI Dong2, XIAO Zheng-hua1, ZHANG Meng-jun1, GUO Jia-wei1, ZHOU Juan1,
LI Bin3, ZHANG Hui-jing1
(1. Department of Analytical Chemistry,College of Pharmacy,Third Military Medical University,
Chongqing 400038,China;
2. Cadet Brigade,Third Military Medical University,Chongqing 400038,China;
3. Chongqing Research Institute of Science and Technology,Chongqing 401123,China)
Abstract: A rapid and accurate RP-HPLC method for determining NI221 in rats serum was developed. Following deproteinisation by freezing acetonitrile, NI221 and the internal standard ferulic acid were separated on the Diamonsil C18 column (200 mm×4.6 mm× 5 μm) using isocratic elution with methanol-0.05%phosphoric acid (pH 2.5) (V∶V=55∶45) at a flow rate of 1.0 mL/min. The detection wave length was at 302 nm. The linear range of NI221 was 0.15~20 μg·mL-1,the correlation coefficient was 0.999 6,the recovery of the method was between 97.36% and 112.50% (n=15). The coefficients of variation for inter-day and intra-day precisions were less than 15%. This method can be applied to determine NI221 concentration in rats serum,which was suitable for the preclinical pharmacokinetic investigation of NI221.
Key words: NI221; ferulic acid; RP-HPLC; serum drug concentration


基于萘酰亚胺为发光团的Cu2+荧光探针的合成与表征
王  婷, 许  可, 赵  静, 李茂华, 翁诗星,张  军
(海南医学院热带医学与检验医学院,海南 海口 571199)
摘  要:自主合成一种以Schiff-base结构单元为识别位点的萘酰亚胺类荧光探针,该化合物结构经IR、NMR、MS以及元素分析确定。详细考查其对不同金属离子的光谱分辨能力,探针对Cu2+实现“on-off”的光开关效应,表现出较好的选择性,而其他金属离子的加入没有引起明显的光谱变化。在乙醇相中,探针对Cu2+的检出限为5.3×10-7 mol/L。实验结果表明:该探针可以用于Cu2+的分析检测。
关键词:萘酰亚胺;Cu2+;荧光探针;金属离子
中图分类号:O622.7;O614.121;O657.31;X832       文献标志码:A      文章编号:1674-5124(2013)06-0057-03
Characteristics and synthesis of Cu2+-selective fluorescent probe derived
from naphthalimide
WANG Ting, XU Ke, ZHAO Jing, LI Mao-hua, WENG Shi-xing, ZHANG Jun
(School of Tropical and Laboratory Medicine,Hainan Medical University,Haikou 571199,China)
Abstract: A new fluorescent probe derived from naphthalimide with Schiff-base unit as reorganization site was synthesized, and the structure of the new compound was characterized by IR, NMR, MS and elemental analysis. The selectivity of this probe was studied in detail, and the results exhibited that this probe had good selectivity to Cu2+ over a series of metal ions in ethanol. With the optimized conditions, the detection limit 5.3×10-7 mol/L was obtained. Study showed that this newly synthesized probe could be used for detecting Cu2+.
Key words: naphthalimide; Cu2+; fluorescent probe; metal ions


UPLC-MS/MS测定人血浆中罗红霉素的浓度
及在药代动力学中的应用
胡岚岚, 汤建林, 周世文, 徐  颖,张  玥
(第三军医大学新桥医院临床药理基地,重庆 400037)
摘  要:建立一种快速、准确测定人血浆中罗红霉素浓度的UPLC-MS/MS分析方法。以克拉霉素为内标,0.2 mL含药血浆经碱化、乙酸乙酯萃取后进样分析;色谱柱为Acquity UPLC BEH C18(2.1 mm×50 mm×1.7 μm),流动相组成为乙腈∶0.01%醋酸铵=30∶70,梯度洗脱方式,乙腈比例在4 min内从30%变为70%,流速0.3 mL/min,柱温为35 ℃,进样量3 μL。质谱条件:气动辅助电喷雾离子化(ESI)源;正离子检测(MRM)模式,罗红霉素质荷比为(m/z 837.53→m/z 158.15)和克拉霉素质荷比为(m/z 748.48→m/z 590.30)。罗红霉素在0.05~25.6 μg/mL的浓度范围内呈线性,定量下限为0.05 μg/mL,基质效应影响小,日内变异系数小于10.3%,日间变异系数小于9.4%,相对回收率在97.5%~106.4%之间。该方法准确、快速、灵敏,可用于微量血浆的罗红霉素药物浓度监测、人体内药代动力学及生物等效性研究。
关键词:罗红霉素;UPLC-MS/MS;药代动力学;血浆
中图分类号:R917;O657.7+2;R446.11;TQ465.7       文献标志码:A       文章编号:1674-5124(2013)06-0060-04
Quantification of roxithromycin in human plasma by UPLC-MS/MS
and its application in a pharmacokinetic study
HU Lan-lan, TANG Jian-lin, ZHOU Shi-wen, XU Ying, ZHANG Yue
(Base for Drug Clinical Trial,Xinqiao Hospital,Third Military Medical University,Chongqing 400037,China)
Abstract: To establish a rapid and accurate method for quantification of roxithromycin in human plasma with UPLC-MS/MS, human plasma sample was alkalized by sodium carbonate, extracted with ethyl acetate, the roxithromycin and internal standard clarithromycine were separated on an acquity UPLC BEH C18 column (2.1 mm×50 mm× 1.7 μm) using gradient elution with acetonitrile (mobile phase A) and 0.01% ammonium acetate (mobile phase B) with a flow rate of 0.3 mL/min and a total runtime of 4.0 min. Mass spectrometry: The analytes were detected by the electronic-spryionization (ESI), selected multiple reaction monitoring (MRM) using the precursor to product ion combinations of m/z 837.53→158.15 and m/z 748.48→590.30 was performed to detect roxithromycin and the internal standard respectively. The method was linear over the concentration range of 0.05-25.6 μg/mL. The lower limit of quantification was 0.05 μg/mL. Intra-day inaccuracy was within 10.3% and inter-day was less than 9.4%. Matrix effects were minor. The recovery of the method was between 97.5% and 106.4%. The validated method was developed for quantification of roxithromycin in small volumes of plasma. The method can be used for therapeutic drug monitoring and the study of pharmacokinetics and bioavailability of roxithromycin.
Key words: roxithromycin; UPLC-MS/MS; pharmacokinetics; plasma


岩石破裂电磁辐射监测系统研制
朱福荣1, 朱红秀1, 姚欣歆2, 魏  争3, 黄松岭3
(1. 中国矿业大学(北京)机电与信息工程学院,北京 100083; 2. 清华大学软件学院,北京 100084;
3. 清华大学电机系电力系统国家重点实验室,北京 100084)
摘  要:为满足有关岩石破裂电磁辐射研究的需要,研制一套电磁辐射监测系统。该系统由电磁感应探头、信号调理电路和数据采集系统组成,可对频率在1 kHz~1 MHz内的微弱电磁场进行监测。电磁感应探头可感应空间中某一方向的电磁场变化,并将其转换成电信号;信号调理电路对探头输出的电信号进行放大、滤波,并实现放大滤波电路与计算机的电气隔离;数据采集软件基于LabVIEW编写,用于对监测到的信号进行记录和显示。实验结果表明:该系统性能稳定,操作简便,能够有效地监测岩石破裂所产生的电磁辐射,对岩石、混凝土等材料的力-电-磁研究具有重要意义。
关键词:岩石破裂电磁辐射;电磁感应;信号调理电路;LabVIEW编程
中图分类号:O441.3;TM937.2;TM935.23;TU45      文献标志码:A      文章编号:1674-5124(2013)06-0064-04
Development of rock fracture electromagnetic emission monitoring system
ZHU Fu-rong1, ZHU Hong-xiu1, YAO Xin-xin2, WEI Zheng3, HUANG Song-ling3
(1. School of Mechanical Electronic & Information Engineering,China University of Mining & Technology
(Beijing),Beijing 100083,China;
2. School of Software,Tsinghua University,Beijing 100084,China;
3. State Key Lab of Power Systems,Department of Electrical Engineering,Tsinghua University,
Beijing 100084,China)
Abstract: This rock fracture electromagnetic emission monitoring system is developed to meet the need of research on electromagnetic emission during rock fracture. The system consists of electromagnetic induction probe, signal conditioning circuit and data acquisition system, and it is capable of monitoring weak electromagnetic fields with frequency from 1 kHz to 1 MHz. The electromagnetic induction probe can detect spatial magnetic field changes in a certain direction and convert it into electric signals. The signal conditioning circuit can magnify, filter probe-outputted signals, and achieve electric isolation between amplifying-filtering circuit and the computer, while data acquisition software based on LabVIEW programming is used for recording and displaying the detected signals. The experimental results show the system owes high stability and user-friendly operation. On the whole, this system is able to monitor electromagnetic emission during rock failure, and will have a positive impact on the mechanical-electronic-magnetic research among materials like rock, concrete, etc.
Key words: rock fracture electromagnetic emission; electromagnetic induction; signal conditioning circuit; LabVIEW programming


NMOHEMS剖面探头下沉实验装置研制
翁兴国, 叶  松, 陈振涛, 王晓蕾, 焦  冰
(解放军理工大学气象海洋学院,江苏 南京 211101)
摘  要:针对NMOHEMS对剖面探头深度探测精度的需求,需测试和验证剖面探头的下沉性能参数。以89C52单片机为核心,采用软、硬件结合,设计一种高精度的水库实验装置,对装置进行误差分析,并验证计时器的计时精度。实验结果表明:装置结构简单,工作稳定,自身系统误差为0.000 36 s,重复性误差为±0.148%,可满足系统对计时精度的要求,获取了剖面探头下沉的实验数据,为测量剖面探头下沉性能参数提供新方法。
关键词:剖面探测;控制计时器;单片机;NMOHEMS系统
中图分类号:V674.81;TP212.1;TP273;X834        文献标志码:A       文章编号:1674-5124(2013)06-0068-05
Design of submergence experiment equipment for NMOHEMS profile probe
WENG Xing-guo, YE Song, CHEN Zhen-tao, WANG Xiao-lei, JIAO Bing
(Institute of Meteorology and Oceanography,PLA University of Science & Technology,
Nanjing 211101,China)
Abstract: According to the demand of depth detection precision of profile probe, the submergence performance parameters of profile probe need to be tested and verified. The precise lake experiment equipment was designed based on software and hardware with 89C52 singlechip as the core. At the same time, error analysis of the equipment was implemented and the precision of timer was verified. The experimental results showed that the device has the advantages of simple structure and stable operation. The system error of device itself is down to 0.000 36 s and the repeatability error is  0.148%, which can satisfy the timing accuracy requirement of the system. The experimental data are obtained and a new way of measuring submergence performance parameters of NMOHEMS’ profile probe is adoptable.
Key words: profile detection; controller&timer; SCM; NMOHEMS


基于Agent的挖掘机故障诊断系统设计
周  敏1, 唐小燕1, 宦  娟2
(1. 常州信息职业技术学院网络与通信工程学院,江苏 常州 213164;
2. 常州大学信息科学与工程学院,江苏 常州 213164)
摘  要:为实时、全面地检测GJW111型挖掘机的故障产生部位和程度,提出基于Agent进行故障诊断的总体设计,给出系统整体框架、故障诊断流程和诊断Agent的详细设计,经验证该设计具有“即插即用”特性,可以提高系统扩展性。
关键词:挖掘机;故障诊断;Agent技术;RBF;可靠性
中图分类号:TP206+.3 U415.51+1;TP183;TP274      文献标志码:A      文章编号:1674-5124(2013)06-0073-04
Design of Agent-based fault diagnosis system for excavators
ZHOU Min1, TANG Xiao-yan1, HUAN Juan2
(1. School of Network and Communication Engineering,College of Changzhou Information Technology,
Changzhou 213164,China;
2. Department of Information Science and Engineering,Changzhou University,
Changzhou 213164,China;)
Abstract: In order to diagnose the fault location and degree of GJW111 type excavators in real-time, the authors provide an overall design and framework and fault diagnosis process based on the Agent. Meanwhile, they design the detail structure of a diagnostic Agent. The design can improve the system scalability.
Key words: excavator; fault diagnosis; Agent; RBF; scalability


一种便携分体式四轮定位仪检定装置的研究
赵  军, 江  东, 段继伟
(中国测试技术研究院,四川 成都 610021)
摘  要:针对目前国内四轮定位仪的计量检定现状进行分析和论述,指出目前检定装置存在的不足之处,介绍一种既能满足定位精度要求又便于现场标定的便携分体式四轮定位仪检定装置,并对该定装置的检定原理、检定方法和设计特点进行分析,最后通过实验数据验证了该装置的正确性和可行性。
关键词:四轮定位;误差分析;检定;主销后倾;主销内倾
中图分类号:U462.2+2;U463.34;TM930.12;TB93      文献标志码:A      文章编号:1674-5124(2013)06-0077-04
Study on one kind of portable split calibrating apparatus of four-wheel aligners
ZHAO Jun, JIANG Dong, DUAN Ji-wei
(National Institute of Measurement and Testing Technology,Chengdu 610021,China)
Abstract: It is analyzed and discussed that the calibration status of the domestic four-wheel aligner in this paper, and the inadequacies of the current verification device is pointed out. One portable split four-wheel alignment instrument verification device which can satisfy the accuracy and be convenient for field calibration was introduced, and the principle of calibration, the calibration method and design features were analyzed. The correctness and feasibility of the device were proven through analyzing the experimental data.
Key words: four-wheel aligner; error analysis; calibrating; caster; steering axle inclination(SAI)


基于ZigBee无线传感网的泥石流多发地数据采集系统
杨  帆, 王  军, 杨景常, 涂  敏
(西华大学电气信息学院,四川 成都 610039)
摘  要:针对有线传感网数据采集系统布线成本高以及无法在环境恶劣的野外放置等问题,介绍一种基于ZigBee无线传感网的数据采集系统。该系统由基于MSP430单片机的主机、子机组成,子机由太阳能供电连接传感器,放置在户外采集数据,主机连接PC机放置在室内,主机和子机通过ZigBee无线网络通信。该系统实现了野外数据的采集和无线传输,具有实时性、稳定性等特点,可用于地质分析和泥石流预警等系统,以及各种无线传感网数据采集系统。
关键词:MSP430单片机;ZigBee无线传感网;数据采集;无线传输
中图分类号:P642.23;TN926+.23;TP274+.2;TP206+.1    文献标志码:A     文章编号:1674-5124(2013)06-0081-04
Data acquiring system based on ZigBee wireless sensor network
used in mudslide place
YANG Fan, WANG Jun, YANG Jing-chang, TU Min
(School of Electrical and Information Engineering,Xihua University,Chengdu 610039,China)
Abstract: Due to the high cabling cost of data acquisition system and its infeasibility in poor-environment for wiring sensor networks, this paper presented a design of wireless data acquisition system which is based on the ZigBee protocol-based wireless sensor network. The system is composed of sub machine and host machine which are implemented by the MSP430 SCM and the PC. The sub machine powered by solar energy connects sensors. It is placed outdoors to gather the data. The host machine is placed in the room to connect the PC. Host machine communicates with sub machines through the ZigBee wireless network. This system realizes data acquisition and wireless transmission, guarantees the real-time transmission and stability. It can be implemented in the fields where mudslides frequently happen. It is suitable for geological analysis and mudslides warning or other wireless sensor data colleting system.
Key words: MSP430 SCM; ZigBee wireless sensor network; data acquisition; wireless transmission


高速多通道数据采集系统的设计
马  凯1,2, 杨  峰2
(1. 徐州医学院医学信息学院,江苏 徐州 221004; 2. 中国矿业大学(北京)机电与信息工程学院,北京 100083)
摘  要:基于复杂可编程逻辑器件CPLD控制和USB网络动态增减接口,研究设计多通道高速高精度数据采集系统;CPLD作为主控系统,利用USB配置标记识别通道动态增减网路接口,搭建电子元器件设计采集控制核心电路,详细分析CPLD控制各个部件的时序采集和传输数据,给出USB动态增减网络通道接口的方法。成功设计探测速度可以达到80 km/h,同时6个通道高速数据采集探测,并且每个通道采集的数据同时显示在同一屏幕上。
关键词:CPLD系统;USB网络接口;多通道;数据采集
中图分类号:TP274+.2;TP332.1;TP336;TN919.2      文献标志码:A      文章编号:1674-5124(2013)06-0085-04
Design of high speed multi-channel data acquisition system
MA Kai1,2, YANG Feng2
(1. Institute of Medical Information Science,Xuzhou Medical College,Xuzhou 221004,China;
2. Institute of Information & Mechanical and Electronic Engineering,China University of Mining and
Technology,Beijing 100083,China)
Abstract: Based on complex programmable logic device (CPLD) and USB network dynamic interfaces, the high speed multi-channel and high precision data acquisition system is designed. It takes CPLD as the master control system, uses the USB configuration tag identification channel dynamically to increase or decrease the network interface, and sets up electronic components to design the collection control core circuit. CPLD control and the sequence of the parts in the data acquisition and transmission are analyzed in detail. The method to dynamically increase or decrease the USB network channel interface is given. The detect speed can reach 80 km/h, high speed data acquisition detection can carried out in 6 channels at the same time, and the data collected from each channel can displayed on the same screen simultaneously.
Key words: CPLD; USB network interface; multi-channel; data acquisition


频域主分量模态分析法及在颤振试飞中的应用
王东森1, 王  彤2, 卢晓东1, 周友明1
(1. 中国飞行试验研究院,陕西 西安 710089; 2. 南京航空航天大学,江苏 南京 210016)
摘  要:为提高对颤振边界预测至关重要的模态阻尼的识别精度,基于频域多参考点法,采用主分量分析、奇异值分解和最小二乘技术,考虑频率响应函数负共轭部分和带外模态的影响,提出频域主分量分析模态参数识别方法,具有处理速度快、所需用户交互少的特点。通过飞机模型仿真算例验证在模态高度耦合情况下该方法的有效性,并在实际飞行颤振试验中进行应用。
关键词:飞行器试验技术;模态分析;主分量分析;阻尼估计
中图分类号:V217+.1;V212;TM935.21;O241.5       文献标志码:A      文章编号:1674-5124(2013)06-0089-04
Frequency domain principal component modal analysis and its application in
flight flutter test
WANG Dong-sen1, WANG Tong2, LU Xiao-dong1, ZHOU You-ming1
(1. Chinese Flight Test Establishment,Xi′an 710089,China;
2. Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)
Abstract: A frequency domain principal component modal identification algorithm was presented to improve the precision of damping estimation in this paper. The techniques of principal component analysis, singular value decomposition and least-square estimation were utilized, and the influence of out-band modes and negative conjugate part of the frequency response functions were considered as well. The algorithm has the characteristics of fast running and little interaction. It was validated with a simulation example of GARTEUR airplane model with highly coupled modes, and was applied to the real flight flutter test.
Key words: aircraft test technology; modal analysis; principal component analysis; damping estimation


现代故障诊断技术研究综述
王晓峰, 毛德强, 冯尚聪
(北京航空航天大学,北京 100191)
摘  要:在简单介绍故障诊断技术发展的基础上,将故障诊断技术分为基于模型、基于信号、基于知识和基于智能优化4类,并对每类故障诊断技术中重要方法的原理、优缺点和研究现状进行比较分析,最后从复合智能诊断技术、远程协作诊断技术、智能仿生诊断技术3个方面,对现代故障诊断技术的发展趋势和亟待解决的问题进行分析与探讨,给出分类图,提出故障诊断领域将来的研究发展方向。
关键词:故障诊断;基于模型;基于知识;基于信号;智能优化;智能仿生;算法
中图分类号:TP277.3;TP212.6;N945.13;TP206+.1      文献标志码:A     文章编号:1674-5124(2013)06-0093-06
Review on modern fault diagnosis technologies
WANG Xiao-feng, MAO De-qiang, FENG Shang-cong
(Beihang University,Beijing 100191,China)
Abstract: On the basis of the brief introduction of the fault diagnosis technology development, this paper divides the fault diagnosis technologies into four categories, i.e., model-based, signal-based, knowledge-based and intelligent optimization-based. In addition, this paper analyzes the principle, advantages and disadvantages and present research situation of some important methods. Finally, from the aspects of compound intelligent diagnosis technology, remote collaborative diagnosis technology and intelligent bionic diagnosis technology, this paper analyzes and discusses the trends of the development of the modern fault diagnosis technology, the problems to be solved is also discussed, the classification diagram is given, too. In addition, the future direction of research and development in the field of fault diagnosis is presented.
Key words: fault diagnosis; model-based; knowledge-based; signal-based; intelligent optimization;intelligent bionic; algorithm


基于新型跟踪微分器的无刷直流电机换相位置检测
廖晓文1, 刘  美1, 邝灿桐2
(1. 广东石油化工学院自动化系,广东 茂名 525000; 2. 广州东芝白云菱机电力电子有限公司,广东 广州 510460)
摘  要:为从被噪声污染的反电动势中提取清晰的过零信号以满足无刷直流电机换相位置检测的要求,设计一种结构简单的新型跟踪微分器。在系统状态与平衡点距离较远时,采用非线性非光滑方式趋近平衡点;在系统状态与平衡点距离较近时,采用线性方式趋近平衡点。同时,利用李亚普诺夫直接法证明信号跟踪的全局渐进稳定性并给出相关参数的物理意义。仿真结果表明:新型跟踪微分器能以一套参数满足宽调速范围运行的需要,可获取具备固定延迟时间的过零信号,具有良好的高斯噪声、斩波噪声抑制能力。
关键词:新型跟踪微分器;李亚普诺夫直接法;无刷直流电机;换相位置检测;反电动势
中图分类号:TM341;TP212.2;TP274+.5;TP214+.6     文献标志码:A      文章编号:1674-5124(2013)06-0099-05
Commutation position detection of BLDC based on new tracking differentiator
LIAO Xiao-wen1, LIU Mei1, KUANG Can-tong2
(1. Automation Department,Guangdong Institute of Petrol-Chemical Technology,Maoming 525000,China;
2. Guangzhou Toshiba Baiyun Ryoki Power Electronics Co.,Ltd,Guangzhou 510460,China)
Abstract: To meet the requirements of  BLDC commutation position detection, a new tracking differentiator with simple structure was designed  to improve the clearness of  back-EMF zero-crossing signal with noise. A nonlinear and nonsmooth convergent method is adopted when the state is far away from the equilibrium point, and linear convergent method is adopted when the state is near the equilibrium point. Global asymptotic stability of signal tracking is proved using Lyapunov direct method and the physical meaning of the relevant parameters are elaborated. Simulation results show that new tracking differentiator can meet the demand of wide speed range operation with a set of parameters, and can obtain zero-crossing signal with a fixed delay time. In addition, it has enhanced suppression capability of Gaussian noise and chopper noise.
Key words: new tracking differentiator; lyapunov direct method; BLDC; commutation position detection; back-EMF


基于分组差错控制的轨道交通ATS信号可靠组播技术研究
刘德欣1, 朱文杰1, 申桂成2
(1. 北车建设工程有限责任公司,北京 100078; 2. 沈阳东软集团有限公司,辽宁 沈阳 110179)
摘  要:为解决轨道交通中ATS信号组播丢包问题,拟定一种基于分组差错控制的可靠组播传输协议。该协议不需要路由器的支持,在每个接收节点都定义一个申请重传权值列表,根据组播丢包情况,动态更新接收节点的权值列表,从而为接收节点选择最佳的重传请求处理节点,以提高数据重传效率。仿真实验表明:在多个分组中,将该文所提出的基于分组差错控制的可靠组播传输协议应用于轨道交通中ATS信号仿真系统中,与传统的可靠组播传输协议相比,能有效减少差错修复时延,并提高系统整体的吞吐率。
关键词:ATS信号;可靠组播;权值列表;差错修复
中图分类号:U292.9;TN915.04;U285.4+1;U284.2      文献标志码:A     文章编号:1674-5124(2013)06-0104-03
Research of reliable multicast technology for rail transit ATS
signal based on grouping error control
LIU De-xin1, ZHU Wen-jie1, SHEN Gui-cheng2
(1. North Vehicle Construction Engineering Company,Beijing 100078,China;
2. Shenyang Neusoft Group Ltd,Shenyang 110179,China)
Abstract: Facing to the packet loss problem of the ATS signal multicast for rail traffic, a reliable multicast transport protocol based on grouping error control was developed. The protocol needn’t to be supported by the router. A list of applications to retransmission weight values was defined at each receiving node. The receiving node weights list was dynamically updated according to the multicast packet loss situations, then the optimum retransmission request processing node for the receiving node was selected and the efficiency of data retransmission was improved. Simulation results show that when reliable multicast transport protocol based on packet error recovery proposed in this paper was used in the ATS signal rail transportation simulation systems, it can effectively reduce the error control latency and improve overall system throughput in several groups compared with traditional reliable multicast transport protocol.
Key words: ATS signal; reliable multicast; weight values list; error recovery


雷达状态监测系统设计
郭明明1, 李成玉1, 尚朝轩1, 胡文华1, 崔佩佩2
(1. 军械工程学院,河北 石家庄 050003; 2. 73106部队,江苏 淮安 223311)
摘  要:为降低雷达维修成本、提高雷达保障效率,针对雷达的不同信号分别设计不同的采集方式,完成雷达实时状态监测系统,确保采集监测信息的准确性。该设计增加了数据实时处理终端系统,能够实时处理雷达状态信息,对雷达出现的故障能够做到早发现、早报警、早维修,满足保障需求。
关键词:状态监测;数据采集;故障诊断;数据传输
中图分类号:TN95;TP277.3;TP274+.2;TP206+.3      文献标志码:A       文章编号:1674-5124(2013)06-0107-03
Design of condition monitoring system for radar electronic systems
GUO Ming-ming1, LI Cheng-yu1, SHANG Chao-xuan1, HU Wen-hua1, CUI Pei-pei2
(1. Ordnance Engineering College,Shijiazhuang 050003,China;
2. Unit 73106 of PLA,Huai’an 223311,China)
Abstract: In order to reduce radar maintenance costs and improve the efficiency of radar protection, the radar real-time condition monitoring system was designed. Different signal acquisitions were designed for different radar signals to ensure the accuracy of the collected monitoring information. This design also used a real-time data processing terminal system for processing radar condition information in real-time. With this design, the failure of the radar could be identified, alarmed and maintained early, and the protection requirements could be met.
Key words: condition monitoring; data acquisition; fault diagnosis; data transmission


基于蚁群算法的多值属性系统测试序列优化
孟亚峰, 韩春辉, 李丹阳, 朱  赛
(军械工程学院电子与光学工程系,河北 石家庄 050003)
摘  要:针对系统故障诊断中的多值属性系统测试序列优化问题,该文提出一种改进的蚁群算法,将成功运用在二值属性系统中的蚁群算法扩展到多值属性系统中,根据多值属性系统特点,设计相应的状态转移规则和信息素更新机制,并采用蚁群算法和遗传算法相融合的联合优化策略,解决了多值属性系统的序列优化问题,为多值属性系统的测试优化问题提供了一条新的解决途径。
关键词:多值属性系统;测试序列优化;蚁群算法;联合优化
中图分类号:TP277;O236;TP311.52;O242         文献标志码:A        文章编号:1674-5124(2013)06-0110-04
Test sequence optimizing for multi-value attribute system based on Ant algorithm
MENG Ya-feng, HAN Chun-hui, LI Dan-yang, ZHU Sai
(Department of Electronic and Optical Engineering,Ordnance Engineering College,
Shijiazhuang 050003,China)
Abstract: Aiming at solving the problem of test sequencing optimization in fault diagnosis for multi-value attribute system, an improved ant algorithm is presented. Ant algorithm which has solved the problem for binary attribute system is expanded to a multi-value attribute system. According to the feature of the multi-value attribute system, the transfer rule of the ant state and feedback of the pheromone flexibly is designed and the test sequence optimization problem of the multi-value attribute system is solved with the joint optimization which combines GA with the ant algorithm. The algorithm presented provides a new way to solve the test sequencing optimization for multi-value attribute system.
Key words: multi-value attribute system; test sequencing optimization; ant algorithm; joint optimization


基于偏载工况的装载机工作装置刚-柔耦合分析
王云超1, 刘  春2, 黄素德2
(1. 集美大学机械工程学院,福建 厦门 361021; 2. 厦门厦工机械股份有限公司博士后工作站,福建 厦门 361021)
摘  要:为能够更加全面真实地反映装载机工作装置在偏载工况下的动臂受力和变形规律,利用ADAMS和EASY5软件建立装载机工作装置的刚-柔、机-液耦合的联合仿真模型。通过样机测试数据对仿真模型的正确性进行分析验证,并进一步深入探讨提升油缸的连通式和独立式连接方式对动臂受力的影响。对比分析发现:极限偏载崛起工况下,连通式的动臂最大应力很接近许用应力,因此,在交变载荷作用下很容易产生裂纹;而独立式连接方式既可以防止动臂过载,也提高了动臂的抗扭能力。这为装载机工作装置的设计提供了有益借鉴。
关键词:装载机;提升油缸的连接方式;刚-柔、机-液联合仿真;偏载工况
中图分类号:TH243.1;TP274;TP391.9;TM930.12     文献标志码:A     文章编号:1674-5124(2013)06-0114-04
Rigid-flexible coupling analyses of loader working device based on offset load
WANG Yun-chao1, LIU Chun2, HUANG Su-de2
(1. College of Mechanical Engineering,Jimei University,Xiamen 361021,China;
2. Post-doctoral Working Station of Xiamen XGMA Machinery Co.,Ltd,Xiamen 361021,China)
Abstract: To comprehensively reflect the force and deformation of working device of the loader under offset load condition, a mechanism-hydraulic and rigid-flexible coupling co-simulation model of the loader working device was built by ADAMS and EASY5 software. Based on the correctness of co-simulation model verified by the test results, the effect of linked and dependent lift cylinder connection modes on the lift arm force was deeply researched. The comparison between two lift cylinder connection modes shows that the maximum stress of lift arm with linked lift cylinder is just within the allowable stress under limit breakout force of offset load condition. So the lift arm is liable to crack under the action of alternating load. But the dependent lift cylinder connection mode not only can avoid overloading but also can improve torsional strength. It is a useful reference for the design of the working device of loader.
Key words: loader; connection modes of lift cylinder; mechanism-hydraulic and rigid-flexible co-simulation; offset load condition


多用途汽车正面碰撞特性的数值模拟
于国飞
(厦门理工学院机械系,福建 厦门 361024)
摘  要:为保证驾驶员和乘员的安全性,综合运用多种有限元分析软件,建立多用途汽车的有限元正面碰撞模型。通过对正面碰撞模型进行数值模拟、分析碰撞仿真结果,得出整车动能、内能和沙漏能在碰撞瞬间的转换关系,获得碰撞过程中车身前围关键零件的能量吸收程度和变形形式,由此提出提高整车正面抗撞性的方法和措施。仿真结果表明:该方法可用于乘用车的正面碰撞等仿真分析,能达到降低研发周期、提高分析精度的目的。
关键词:多用途汽车;正面碰撞;数值模拟;有限元分析
中图分类号:U461.91;TP391.9;O242.1;TM930.12      文献标志码:A     文章编号:1674-5124(2013)06-0118-04
Numerical simulation on frontal crash characteristics of multi-purpose vehicles
YU Guo-fei
(Department of Mechanical Engineering,Xiamen University of Technology,Xiamen 361024,China)
Abstract: To ensure the safety of the driver and crew, the FEA frontal crash model of a Multi-Purpose Vehicle (MPV) was built by using of various finite element analyses (FEA) softwares. After numerical-simulating the frontal crash model and analyzing the crash test simulation results, the transformation relationship among the full vehicle kinetic energy, internal energy and hourglass energy during a crash was built. The energy absorbing and distortion situation of the main parts were got at the same time. So the methods and measures for improving the vehicle frontal crash worthiness were suggested. The simulation results show that this method can be used for passenger safety simulation analysis of vehicle frontal crash, to reduce development cycle, and improve the analytical precision of purpose.
Key words: multi-purpose vehicle(MPV); frontal crash; numerical simulation; FEA


全承载大客车底架动态载荷谱分析
蔡建进, 邵明亮
(厦门理工学院机械工程系,福建 厦门 361024)
摘  要:针对全承载式大客车底架设计的需要,在底架后悬和发动机附近选择3个测点。分别在阻隔带路况和小鹅卵石路面进行行走测试,提取大客车底架动态应变的时间历程数据,并利用雨流计数法对实测数据作载荷谱的应变频次分析,得到3个测点两种路面的载荷谱的应变大小和变化规律。发现行驶状态的变换引起应变载荷波动,基本不改变载荷幅值频次分布规律,这表明不同的路面等级将引起底架不同程度的疲劳损伤。测试结果为全承载式大客车底架的设计、仿真与试验提供技术基础。
关键词:全承载;底架;雨流计数法;载荷谱;应变频次
中图分类号:U469.1;U463.32+6;TB931;TP274        文献标志码:A       文章编号:1674-5124(2013)06-0122-04
Dynamic loading spectrum measurement and analyses for full-monocoque chassis
CAI Jian-jin, SHAO Ming-liang
(Department of Mechanical Engineering,Xiamen University of Technology,Xiamen 361024,China)
Abstract: Characteristics of testing the full-monocoque bus chassis were discussed in this paper. Three points were chosen on the chassis rear, which met the requirement of loading spectrum of dynamic stress under tow running conditions. The rain-flow counting method is used to analyze the stress frequency on the chassis. The authors find that transport condition’s transformation causes the strain load fluctuation, which does not change the load peak-to-peak value frequency distribution basically. This indicates that the road surface with different ranks will cause the chassis varying degree fatigue damage. The results demonstrate that this can provide the technology base for the full-monocoque chassis’s design, simulation and experiment.
Key words: full-monocoque; chassis; rain-flow counting method; loading spectrum; stress frequency
 

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