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2017 IEEE 2nd Advanced Information Technology, Electronic and Automation Control Conference (IAEAC)最新文献

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GPU based simulator of ultrasound pressure fields 基于GPU的超声压力场模拟器
Yang Wei, Y. Yang, Wenxi Fei
Simulation of ultrasound pressure fields is representative computationally demanding algorithm. In order to get results back in finite time, the number of source points and observation points are often limited. The introduction of graphics processing unit (GPU) can significantly speed up this algorithm. We implemented the simulator which based on the same principle as the Ultrasim toolbox, where spherical waves responses from several point sources are accumulated in a set of observation points, hence solving the Rayleigh-Sommerfeld integral. For each calculation at a given observation point is independent of the result at all other observation points, the problem is therefore perfect for GPU computing. Compared with Ultrasim we give a 400 times speedup when simulating on 150K observation points.
超声压力场仿真是计算量大的典型算法。为了在有限的时间内得到结果,源点和观测点的数量往往是有限的。图形处理单元(GPU)的引入可以显著加快该算法的速度。我们基于与Ultrasim工具箱相同的原理实现了模拟器,其中来自多个点源的球面波响应累积在一组观测点中,从而求解Rayleigh-Sommerfeld积分。对于给定观测点的每个计算都独立于所有其他观测点的结果,因此该问题非常适合GPU计算。与Ultrasim相比,我们在150K的观测点上进行模拟时,速度提高了400倍。
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引用次数: 0
The simulation research on electric arc furnace combined model based on MATLAB 基于MATLAB的电弧炉组合模型仿真研究
Xiaobo Liu, T. Guo, Zhijian Hu, Hongmei Zhu
This paper first briefly introduces several kinds of typical model of electric arc furnace model and its scope of application, including the harmonic voltage source model, energy balance model and the time-varying resistance model, then build the simulation model and analysis its operating characteristics for each model in MTALAB/Simulink simulation. finally, this paper puts forward a kind of electric arc furnace combination model based on different models, combines the advantages of each model and the feasibility of the model is verified by practical example simulation.
本文首先简要介绍了电弧炉模型的几种典型模型及其适用范围,包括谐波电压源模型、能量平衡模型和时变电阻模型,然后建立了仿真模型,并在MTALAB/Simulink仿真中分析了每种模型的运行特性。最后,本文提出了一种基于不同模型的电弧炉组合模型,结合了每种模型的优点,并通过实例仿真验证了模型的可行性。
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引用次数: 0
Modeling complex social contagions in big data era 大数据时代复杂社会传染模型
Xuyang Ding, Zhangjian Wu, Wantao Chen, Y. Liu, Ying Xie, Shimin Cai
In big data era, individuals are surrounded by various kinds of social medium, such as Facebook, Twitter and Microblog. These social media produce vast information every day and support diverse social contagions. However, the dynamics and mechanisms of these social contagions are still obscure and unrevealed because of the big data. In this paper, we propose a novel non-Markovian social contagion model to study behavior spreading under the environment of big data, in which a fraction of global individuals can transmit the behavior information to every susceptible individual, and the remaining local individuals can only transmit the behavior information to neighbors. Through extensive numerical simulations, we find that the global individuals markedly promote the behavior spreading and decrease the critical information transmission probability. In addition, we note that the degree heterogeneity of social network does not change the phenomena qualitatively. Our results may shed some lights in predicting and controlling social contagions. In further, the proposed model may be applied in real simulation platforms for emergency management in big data era.
在大数据时代,个人被各种各样的社交媒体包围着,比如Facebook、Twitter、微博。这些社交媒体每天都会产生大量的信息,并支持各种社会传染。然而,由于大数据的原因,这些社会传染的动态和机制仍然是模糊和未揭示的。本文提出了一种新的非马尔可夫社会传染模型来研究大数据环境下的行为传播,即一小部分全局个体可以将行为信息传递给每一个易感个体,而剩余的局部个体只能将行为信息传递给邻居。通过大量的数值模拟,我们发现全局个体显著地促进了行为的传播,降低了关键信息的传递概率。此外,我们注意到社会网络的程度异质性并没有从质的上改变这一现象。我们的研究结果可能为预测和控制社会传染提供一些启示。进一步,该模型可应用于大数据时代应急管理的真实仿真平台。
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引用次数: 4
Weighted non-negative sparse low-rank representation classification 加权非负稀疏低秩表示分类
Jingshan Li, Caikou Chen, Xielian Hou, Tianchen Dai, Rong Wang
In the calculation of rank minimization, the non-negative sparse low-rank representation classification (NSLRRC) regularizes nuclear norm's each singular value equally, but this limits its flexibility and ability to solve many practical problems, where the singular values with clear physical meanings ought to be treated differently. In this paper, a weighted non-negative sparse low-rank representation classification method (WNSLRRC) is proposed for robust face recognition. Our method adaptively assigns weights, which provides additional discriminating ability to the original non-negative sparse low-rank models for improved performance, on different singular values. Our method is able to assess the test sample and correct classification based on class-specific reconstruction residuals. Experimental results on public face databases testify the robustness and effectiveness of our method in face recognition. Those also show that our method outperforms other state-of-the-art methods.
在秩最小化的计算中,非负稀疏低秩表示分类(NSLRRC)对核范数的每个奇异值进行等价正则化,但这限制了其灵活性和解决许多实际问题的能力,在这些实际问题中,对具有明确物理意义的奇异值应区别对待。提出了一种用于鲁棒人脸识别的加权非负稀疏低秩表示分类方法(WNSLRRC)。我们的方法在不同奇异值上自适应分配权重,为原始的非负稀疏低秩模型提供了额外的判别能力,从而提高了性能。我们的方法能够评估测试样本并基于特定类别的重建残差进行正确分类。在公共人脸数据库上的实验结果证明了该方法在人脸识别中的鲁棒性和有效性。这些也表明,我们的方法优于其他最先进的方法。
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引用次数: 1
Research on anti-swing characteristic of redundancy cable-driven parallel robot 冗余缆索驱动并联机器人抗摆特性研究
L. Wei, Tao Limin, Ji Zhengnan
In order to compensate 6-DOF relative motion between the ship and large size or weight containers in replenishment operation at sea, a 6-DOF active wave compensation cable-drive parallel robot with anti-swing was designed. It could compensate the 6-DOF motion of cargo and maintain the cargo balance in replenishment operation. The structure and working principle of the cable-drive parallel robot was introduced. The kinematics and dynamics model was established. Swing inhibition principle of the robot was elaborated. The relationship between the robot size and anti-swing workspace was revealed. At last, the simulation study of anti-swing workspace was realized.
为了补偿海上补给作业中船舶与大尺寸或重量集装箱之间的6自由度相对运动,设计了一种具有抗摆动特性的6自由度有源波浪补偿索驱动并联机器人。在补货作业中补偿货物的六自由度运动,保持货物平衡。介绍了缆索驱动并联机器人的结构和工作原理。建立了运动学和动力学模型。阐述了机器人的摆动抑制原理。揭示了机器人尺寸与抗摆动工作空间之间的关系。最后,实现了抗摆动工作空间的仿真研究。
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引用次数: 2
From Euclid division of constant integers to Zhang division of time-varying variables 从常整数的欧几里得除法到时变变量的张除法
Yunong Zhang, Min Yang, Maotai Zou, Sheng Wu, Binbin Qiu
Static Euclid division has been studied for many decades. In this paper, we focus on time-varying division (or termed, Zhang division). As Zhang dynamics (ZD) and gradient dynamics (GD) have shown powerful abilities to solve a great variety of time-varying problems, we present a ZD model and a GD model for time-varying division by defining a Zhang function and an energy function, respectively. Through illustrative examples, the efficacy of the presented ZD and GD models for online solution of time-varying division is substantiated effectively. In addition, division-by-zero (DBZ) problem is solved readily in this paper, which is well understood.
静态欧几里得除法已经研究了几十年。在本文中,我们关注时变分割(或称为张分割)。由于Zhang动力学(ZD)和梯度动力学(GD)在求解各种时变问题方面表现出强大的能力,我们分别通过定义Zhang函数和能量函数,提出了用于时变划分的ZD模型和GD模型。通过算例,有效地验证了所提出的ZD和GD模型对时变分区在线求解的有效性。此外,本文还解决了零除(DBZ)问题,易于理解。
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引用次数: 1
Consistency test based on self-support degree and hypothesis testing for multi-sensor data fusion 基于自支持度和假设检验的多传感器数据融合一致性检验
Kai Zheng, Gangquan Si, Zhou Zhou, Jiaxi Chen, Wenmeng Yue
Focusing on the possibility for observed results with false or erroneous information of sensors which may affect data fusion estimation, a new algorithm is proposed based on self-support degree and hypothesis testing. It is significant to take the consistent test method to identify and remove the observations of failed sensors by checking on the observed results and then the data fusion algorithm could be used for estimation effectively. Based on posteriori probability used in consistent test and the knowledge of hypothesis testing, we regard the problem of consistency test as the hypothesis testing of the difference between two population means. Meantime, the multi-valued problem of multiple sensors is researched. Based on the observed values of different time, each sensor's consistency value of different time about hypothesis testing can be obtained. The results of simulation show the simplicity and effectiveness of the new method based on self-support degree and hypothesis Testing for evaluating the quality of each sensor observations, identifying false and erroneous observed results and providing data fusion estimation with the reliable consistent sensor group.
针对观测结果中存在传感器虚假或错误信息影响数据融合估计的可能性,提出了一种基于自支持度和假设检验的融合估计算法。采用一致性测试方法,通过对观测结果的检验来识别和去除失效传感器的观测值,从而有效地利用数据融合算法进行估计,具有重要意义。基于一致性检验中使用的后验概率和假设检验的知识,我们把一致性检验问题看作是对两个总体均值之差的假设检验。同时,研究了多传感器的多值问题。根据不同时间的观测值,可以得到各传感器在不同时间关于假设检验的一致性值。仿真结果表明,基于自支持度和假设检验的新方法对各传感器观测结果的质量进行评估,识别虚假和错误的观测结果,并提供具有可靠一致性传感器组的数据融合估计,简单有效。
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引用次数: 2
Camshift head tracking based on adaptive multi-model switching 基于自适应多模型切换的凸轮轴头部跟踪
Yugang Shan, Jiabao Wang, Feng Hao
In order to improve the accuracy and efficiency of multi-model switching Camshift head tracking, an adaptive multi-model switching Camshift head tracking method is proposed. This paper first analyzes the advantages and disadvantages of multi-model switching and multi-model combination, then presents the multi-feature description method of the object. Next, using the Bhattacharyya coefficient as the model switching condition, the update time is determined according to the switching threshold. When exceeding the switching threshold, Bhattacharyya coefficient are calculated by the various models, choosing the maximal similarity model as the object model. Image sequences are tested in the public library, the experimental results show that this algorithm can be implemented for long time head motion image sequence in the case of head translation and rotation with anti-jamming and anti-blocking. By comparing and analyzing the multiple features and RGB multi-model switching algorithm, we can get the conclusion that the proposed algorithm is superior to the latter in stability and accuracy.
为了提高多模型切换凸轮头跟踪的精度和效率,提出了一种自适应多模型切换凸轮头跟踪方法。本文首先分析了多模型切换和多模型组合的优缺点,然后提出了目标的多特征描述方法。接下来,以Bhattacharyya系数作为模型切换条件,根据切换阈值确定更新时间。当超过切换阈值时,通过各种模型计算Bhattacharyya系数,选择最大相似度模型作为目标模型。在公共图书馆中对图像序列进行了测试,实验结果表明,该算法可以实现长时间头部运动图像序列在头部平移和旋转的情况下的抗干扰和抗阻塞。通过对多特征和RGB多模型切换算法的比较分析,可以得出该算法在稳定性和精度上都优于RGB多模型切换算法的结论。
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引用次数: 0
Optimization analysis of distribution of RFID multi-tag based on GA-BP neural network 基于GA-BP神经网络的RFID多标签分布优化分析
Yujun Zhou, Donghua Wang, Xiao Zhuang, Xiaolei Yu, Zhimin Zhao, Yinshan Yu
One of the important advantages of RFID technology is to identify multiple targets at the same time. However, in order to identify multi-object at the same time, it is necessary to solve the problem of improving the performance of tag reading. Among the factors affecting the performance of tag identification, the geometric distribution of multi-tag is the key one. With the advantage of GA-BP neural network in optimization analysis, we do some researches about the impacts of the multi-tag's geometric distribution to the performance of reader. By training a large number of dynamic test data under the gate entrance environment, optimal RFID tag geometric distribution can be predicted by GA-BP neural network under the maximum or minimum reading distance. Furthermore, the dynamic reading performance of multi-tag system could be effectively improved.
RFID技术的一个重要优点是可以同时识别多个目标。然而,为了同时识别多目标,必须解决提高标签读取性能的问题。在影响标签识别性能的诸多因素中,多标签的几何分布是关键因素。利用GA-BP神经网络在优化分析中的优势,研究了多标签的几何分布对阅读器性能的影响。通过在大门入口环境下训练大量动态测试数据,利用GA-BP神经网络预测最大或最小读取距离下RFID标签的最优几何分布。此外,还可以有效地提高多标签系统的动态读取性能。
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引用次数: 4
Based on the research of complex network invulnerability 基于复杂网络的抗毁性研究
Jiaming Zhu, Yuan Jiang, Ping Zhao, Fujin Jia, Shengwei Miao
The actual multi-agent system in a variety of complex network environment, the agent itself may be due to external attack led to the suspension of local exchange of information, The local information exchange between agents is also due to transmit and receive information associated with the communication time delay. In this paper, we study degree distribution entropy and the average two-step degree not only can be used as a measure of the network survivability but also can help to optimize the network survivability. Than degree distribution entropy, the average two-step degree as a complex network heterogeneity measure not only contains the diversity of degree distribution information, and contains the information of network topology. Therefore, the average two-step degree is a better measures of the heterogeneity of complex networks. In addition we can also use the most commonly used method, namely by protecting key nodes increasing network survivability. Also can increase the link redundancy between the key nodes, improve network survivability.
实际的多代理系统在各种复杂的网络环境中,代理本身可能由于受到外部攻击而导致本地信息交换暂停,代理之间的本地信息交换也会由于发送和接收信息相关的通信时间延迟。本文研究了度分布熵和平均两步度不仅可以作为网络生存能力的度量,而且有助于优化网络的生存能力。与度分布熵相比,平均两步度作为复杂网络异质性度量不仅包含了度分布的多样性信息,而且包含了网络拓扑的信息。因此,平均两步度是复杂网络异质性的较好度量。另外我们还可以采用最常用的方法,即通过保护关键节点来提高网络的生存性。还可以增加关键节点之间的链路冗余,提高网络的生存性。
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引用次数: 0
期刊
2017 IEEE 2nd Advanced Information Technology, Electronic and Automation Control Conference (IAEAC)
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