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2011 International Conference on Electric Information and Control Engineering最新文献

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Research on system of liquid automatic filling 液体自动灌装系统的研究
Pub Date : 2011-04-15 DOI: 10.1109/ICEICE.2011.5777915
Hong-bo Liu, Li-zhong Wang, Guang-de Wang
This paper introduced a design of liquid automatic filling system, and shed light on the working principle and hardware structure of the system. The paper focused on analyzing principle and method of how to use temperature measurement circuit and the ultrasonic technology to detect flowing liquid. And it discussed what caused the mistakes which occurred in Packaging film transmission and Ultrasonic Flow Detection. This system has the function of real-time flow detection, temperature regulation, automatic transmission of Packaging film, parameter setting and displaying. The system has a extensive social practical value.
本文介绍了一种液体自动灌装系统的设计,阐述了该系统的工作原理和硬件结构。本文着重分析了利用测温电路和超声波技术检测流动液体的原理和方法。讨论了在包装薄膜传输和超声波流量检测中出现错误的原因。该系统具有实时流量检测、温度调节、自动送膜、参数设置和显示等功能。该系统具有广泛的社会实用价值。
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引用次数: 2
Risk analysis of a subway tunnel shield based on a fuzzy synthetic approach 基于模糊综合法的地铁隧道盾构风险分析
Pub Date : 2011-04-15 DOI: 10.1109/ICEICE.2011.5777383
Wang Jie, Guo Liang-jie, Yan-qing Li
In this paper, an overall analysis was carried out of the factors influencing the safety system of the subway running tunnel, taking the case of Wuhan subway project, and a hierarchy structure model is established. On the basis of the comprehensive evaluating risk of fuzzy synthetic judging model, maximum degree of membership principle and R=P×C, this paper has determined the risk rank of the tunnel shield construction interval.
本文以武汉地铁工程为例,对地铁运行隧道安全系统的影响因素进行了全面分析,并建立了层次结构模型。基于模糊综合评判模型、最大隶属度原则和R=P×C综合评价风险,确定了隧道盾构施工区间的风险等级。
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引用次数: 0
A model-based automatic control algorithm for a laser anneal processing system 基于模型的激光退火系统自动控制算法
Pub Date : 2011-04-15 DOI: 10.1109/ICEICE.2011.5778175
Qiang Li, Liren Yan, W. Zhou, Wei Zhang
A physical model dealing with the laser-matter interaction is developed. The model is then adopted as the core of an algorithm that is coded to automatically control a laser annealing system. Doped impurities can be activated during the laser annealing process. In such a process, the total energy that is deposited onto surface of a semiconductor wafer must be carefully controlled, because less laser energy may not efficiently activates the impurities, or more laser energy may melt and destroy the wafer (surface). Given the ratio of activated to total impurities, desired laser dose can be calculated by using our model. Known the laser power, scan speed of the wafer stage can be precisely determined so as to meet the process requirement on the laser dose. One distinct property of our model is: non-heat factors such as the photon absorption are regarded as more critical, whereas in other models, the heat effects are emphasized.
建立了激光与物质相互作用的物理模型。然后将该模型作为编码算法的核心,实现对激光退火系统的自动控制。在激光退火过程中,掺杂杂质会被激活。在此过程中,沉积到半导体晶圆表面的总能量必须仔细控制,因为较少的激光能量可能无法有效地激活杂质,或者更多的激光能量可能熔化并破坏晶圆(表面)。给定激活杂质与总杂质的比例,可以利用我们的模型计算所需的激光剂量。在知道激光功率的情况下,可以精确地确定晶圆台的扫描速度,从而满足工艺对激光剂量的要求。我们的模型有一个明显的特点:非热因素如光子吸收被认为是更重要的,而在其他模型中,热效应被强调。
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引用次数: 0
Dynamic tire model used in advanced chassis control 动态轮胎模型用于高级底盘控制
Pub Date : 2011-04-15 DOI: 10.1109/ICEICE.2011.5776824
Hai-dong Wu, K. Guo, Haibin Xu
Based on the UniTire model in low frequency and the characters of tire vibration in high frequency, an in-plane dynamic tire model is built, which is appropriate for studying on the advanced chassis control. The theory and procedure of modeling are introduced. The parameters of the model are received from the identification of test data. The model is validated by tire dynamic test data, which is got by the tire passing through the classic uneven road at various speeds.
基于低频UniTire模型和高频轮胎振动特性,建立了适合于底盘先进控制研究的面内动态轮胎模型。介绍了建模的原理和步骤。通过对试验数据的识别,得到模型的参数。利用轮胎以不同速度通过经典不平路面的动态试验数据对模型进行了验证。
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引用次数: 3
Study of the magnetic properties in GaN with Mn-doping 锰掺杂氮化镓的磁性研究
Pub Date : 2011-04-15 DOI: 10.1109/ICEICE.2011.5778126
Daqing Xu, Shulin Liu, J. Tong, Yimen Zhang, Yuming Zhang, Hui Guo, Renxu Jia
GaMnN dilute magnetic semiconductor samples, prepared by Mn-ion implanted into unintentionally doped GaN epilayers, exhibit room temperature ferromagnetism. The electronic structure of Mn doped GaN was calculated by using first-principles plane-wave ultrasoft pseudopotential approach based on density functional theory. The results show that the spin-up impurity band is formed and broadened to cross Fermi level due to the hybridization of Mn-3d with N-2p orbits. From experimental and theoretical results, it is believed that Ferromagnetism can be observed if the EF is located within or near the Mn impurity band so that there are enough holes in this band to mediate the ferromagnetic properties.
将mn离子注入无意掺杂的GaN薄膜中制备的GaMnN稀磁性半导体样品具有室温铁磁性。采用基于密度泛函理论的第一性原理平面波超软赝势方法计算了Mn掺杂GaN的电子结构。结果表明,由于Mn-3d轨道与N-2p轨道的杂化作用,形成了自旋向上的杂质带,并将其展宽至跨费米能级。从实验和理论结果来看,如果EF位于Mn杂质带内或附近,并且该带内有足够的空穴来介导铁磁性,则可以观察到铁磁性。
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引用次数: 0
Experimental research on the flame temperature of biodiesel fuel combustion in open-air conditions 露天条件下生物柴油燃烧火焰温度的实验研究
Pub Date : 2011-04-15 DOI: 10.1109/ICEICE.2011.5776922
Mao Gongping, W. Zhong, Hu Peng, Ni Peiyong, Wang Xiaozhe, Gu Shi-qiang
Biodiesel fuel is a non-fossil fuel and an important renewable fuel. It can be obtained from vegetable oil or animal fats, and has recently been suggested as an alternative fuel for immediate utilization as a surrogate for petroleum-based fuels. The combustion of biodiesel fuel or blended with diesel fuel in compression ignition (CI) engines is general results in lower smoke, PM, CO and HC emissions compared to standard diesel fuel, while NOx emission is greater in different extent. Flame temperature of biodiesel fuel combustion plays a very important role on the formation of NOx emission, which is described by Zeldovich mechanism. Thus, studying temperature profile during biodiesel combustion can provide useful insights to the formation and destruction of NOx. The main objective of this work is to investigate the effect of blending biodiesel fuel with diesel fuel on open air flames temperature. The experiments were carried out by thermocouple measurements of local flame temperatures of wick-generated open air flames. The relationships between blend proportions and flame temperature of different layers, number and distribution of high temperature points, relative and mean flame temperature, adiabatic flame temperature, rate of fuel combustion were obtained. In general, it was found that along with the proportions of biodiesel fuel in the blends increases, temperature of outer flame, numbers of high temperature points and their corresponding area, relative and mean flame temperature, adiabatic flame temperature are all increased, while adiabatic flame temperature is decreased. The main reasons are due to higher oxygen content and lower calorific value of biodiesel fuel.
生物柴油是一种非化石燃料,也是一种重要的可再生燃料。它可以从植物油或动物脂肪中获得,最近被建议作为替代燃料作为石油基燃料的替代品立即利用。在压缩点火(CI)发动机中燃烧生物柴油或与柴油混合燃烧,与标准柴油相比,烟气、PM、CO和HC的排放普遍较低,而NOx的排放则不同程度地增加。生物柴油燃料燃烧的火焰温度对NOx排放的形成起着非常重要的作用,用Zeldovich机制描述了NOx排放的形成。因此,研究生物柴油燃烧过程中的温度分布可以为氮氧化物的形成和破坏提供有用的见解。本研究的主要目的是研究生物柴油与柴油混合对露天火焰温度的影响。实验采用热电偶测量了灯芯产生的露天火焰的局部火焰温度。得到了混合比例与不同层的火焰温度、高温点的数量和分布、相对火焰温度和平均火焰温度、绝热火焰温度、燃料燃烧速率的关系。总的来说,随着生物柴油燃料在共混物中比例的增加,外火焰温度、高温点数及其对应面积、相对火焰温度和平均火焰温度、绝热火焰温度均升高,而绝热火焰温度则降低。主要原因是生物柴油燃料含氧量较高,热值较低。
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引用次数: 5
Computational analysis for the synchronizing time of the microcar transmission 微型车变速器同步时间的计算分析
Pub Date : 2011-04-15 DOI: 10.1109/ICEICE.2011.5776984
Tian Shaopeng, Fan Ling, Tang Chen, Mi Shisheng
The synchronizing time directly relates to the transmission shifting performance. The simplified model of process was established according to the actual conditions. Then it analyses the synchronizing time in different conditions for the same shifting force. And then it also analyses the shift handle force in a given synchronizing time in different conditions. On that basis, it presents the effective method to improve shifting time and reduce synchronizing time. This can be used to optimum design.
同步时间直接关系到换档性能。根据实际情况,建立了工艺过程的简化模型。然后分析了同一位移力在不同工况下的同步时间。然后对给定同步时间下不同工况下的换挡手柄力进行了分析。在此基础上,提出了提高换挡时间和缩短同步时间的有效方法。这可以用于优化设计。
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引用次数: 0
The status and development trend of hydraulic hybrid vehicle 液压混合动力汽车的现状及发展趋势
Pub Date : 2011-04-15 DOI: 10.1109/ICEICE.2011.5777051
Ling Yin, Jingping Liu, Hanqian Yang, Xiaolang Xia, Zhichao Zhao, Shanping Chen
The principle of energy-saving in hydraulic hybrid vehicles was introduced. The characteristics of hybrid vehicles with electric or hydraulic were compared. Because of its higher power density and higher efficiency, hydraulic hybrid vehicle is more advantageous when working under the condition changed frequently such as city bus. Different arrangement forms of the hydraulic hybrid system were analyzed to explore their own characteristics and applications. Based on the batteries with high energy density and hydraulic accumulators with high power density, a kind of combination that include their respective advantage were proposed.
介绍了液压混合动力汽车的节能原理。比较了电动混合动力汽车和液压混合动力汽车的特性。液压混合动力汽车由于具有较高的功率密度和效率,在城市客车等频繁变化的工况下工作更具有优势。分析了液压混合动力系统的不同布置形式,探索其各自的特点和应用。以高能量密度电池和高功率密度液压蓄能器为基础,提出了一种结合各自优势的组合方式。
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引用次数: 3
Step tracking algorithm based on finite difference stochastic approximation for SATCOM on-the-move 基于有限差分随机逼近的卫星通信运动阶跃跟踪算法
Pub Date : 2011-04-15 DOI: 10.1109/ICEICE.2011.5778301
W. Jia, Luyao Hao, K. Du
In order to improve the tracking performance of SOTM, an improved step tracking algorithm based on finite difference stochastic approximation was proposed by employing the idea of parameter optimization after analyzing the system characteristics of SOTM. The main idea for this improved step tracking algorithm is to use finite difference to approximate the gradient which is near the optimal value for antenna beam adjusting, and adjust the antenna beam according to stochastic approximation. Only noisy measurements of the received signal strength were used in this process. The antenna beam can be steered to track the target satellite in azimuth plane and elevation plane in the direction of steepest ascent of received signal by using the novel step tracking algorithm. Computer simulation results show not only the effectiveness of the proposed algorithm, but also higher precision can be achieved by the proposed step tracking algorithm.
为了提高SOTM的跟踪性能,在分析SOTM系统特性的基础上,采用参数优化的思想,提出了一种基于有限差分随机逼近的改进步进跟踪算法。该改进步进跟踪算法的主要思想是利用有限差分逼近天线波束调整最优值附近的梯度,并根据随机逼近对天线波束进行调整。在这个过程中只使用了接收信号强度的噪声测量。采用新的步进跟踪算法,可以使天线波束在方位面和仰角面沿接收信号上升最陡的方向跟踪目标卫星。计算机仿真结果表明,所提出的步进跟踪算法不仅有效,而且可以达到更高的精度。
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引用次数: 4
Path planning based on immune genetic algorithm for UAV 基于免疫遗传算法的无人机路径规划
Pub Date : 2011-04-15 DOI: 10.1109/ICEICE.2011.5777407
Ze Cheng, Ying Sun, Yanli Liu
A novel approach of path planning for unmanned aerial vehicle(UAV) is presented based on immune genetic algorithm(IGA) with elitist. IGA introduces immune operator and concentration mechanism which improve the inherent defects of premature and slow convergence speed existing in genetic algorithm (GA). Simulation results show that an ideal flight path can be more quickly searched using IGA, under conditions of meeting the requirements for UAV and the given constraints. Correctness and effectiveness of IGA are verified.
提出了一种基于精英免疫遗传算法的无人机路径规划新方法。IGA引入了免疫算子和集中机制,改善了遗传算法存在的早熟和收敛速度慢的固有缺陷。仿真结果表明,在满足无人机要求和给定约束条件的情况下,IGA能更快地搜索到理想的飞行路径。验证了IGA的正确性和有效性。
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引用次数: 30
期刊
2011 International Conference on Electric Information and Control Engineering
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