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

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An evaluation study on innovation capability of Shijiazhuang's high-tech industry based on rough set theory 基于粗糙集理论的石家庄市高技术产业创新能力评价研究
Chen Zhao
Based on establishing an assessment indicators system of innovation capability on high-tech industries, this paper applied an algorithm method on rough set theory to get weight of each indicators and made evaluation for capability of 7 main high-tech industries in 2014. The results showed that compared with the innovation input and output, the innovation efficiency was the biggest influence on the innovation benefits; in the innovation efficiency, the efficiency of the new product development funds had greater influence than the human input efficiency and the investment efficiency of R&D equipment; In Shijiazhuang high-tech industry, biological field innovation ability was ahead, and The innovation ability of 7 industry had structural differences.
本文在建立高技术产业创新能力评价指标体系的基础上,运用粗糙集理论的算法方法求出各指标的权重,并对2014年7个主要高技术产业的创新能力进行了评价。结果表明:与创新投入和创新产出相比,创新效率对创新效益的影响最大;在创新效率中,新产品开发资金效率的影响大于人力投入效率和研发设备投入效率;石家庄高新技术产业中生物领域创新能力领先,7个产业创新能力存在结构性差异。
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引用次数: 0
Estimation algorithm of interference frequency offset in PCMA system PCMA系统中干扰频偏估计算法
Boxiang Song, Jiping Li, Peng Chen
For cooperative received Paired Carrier Multiple Access (PCMA) signals, a new algorithm for frequency offset estimation is proposed. The local sample sequence is used as auxiliary data, and frequency offset is estimated based on the discrete Fourier transform (DFT) of the autocorrelation of the sequence, which obtained by multiplying the auxiliary data and mixed signal. The modified Cramer-Rao Bound (MCRB) of frequency offset is derived, which provides a theoretical basis for the performance evaluation of the proposed algorithm. The simulation results show that, compared with the M&M algorithm, the proposed algorithm gain a lower signal to noise ratio (SNR) threshold. It is very suitable for frequency offset estimation of PCMA signal in a low SNR.
针对合作接收的配对载波多址(PCMA)信号,提出了一种新的频偏估计算法。将局部采样序列作为辅助数据,将辅助数据与混合信号相乘,得到序列自相关的离散傅立叶变换(DFT),以此估计频率偏移。推导了频率偏移的修正Cramer-Rao界(MCRB),为该算法的性能评价提供了理论依据。仿真结果表明,与M&M算法相比,该算法具有较低的信噪比阈值。它非常适用于低信噪比下PCMA信号的频偏估计。
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引用次数: 0
A study on the effect of radar seeker performance parameters on control and guide precision 雷达导引头性能参数对控制和制导精度影响的研究
Jiachen Feng, Dong Wang, Tie Liu, Chuntao Cai
The radar seeker is the core component of missiles for intercepting and tracking radiation source. In the analysis of missile firing accuracy, the performance of the seeker plays a very important role. In order to analyze the influence of the performance parameters of the seeker on the guidance accuracy, the author of this paper has mainly done the following work. Firstly, the mathematical model of active radar seeker is established. Secondly, three error factors which have typical influence on the seeker performance parameters are selected and analyzed, and the mathematical model is established. Lastly, the flight attitude of the missile is numerically simulated with the consideration of the effect of the three error factors on the seeker. The results show that the performance parameters of the active radar seeker have a great effect on the missile guidance accuracy, which can provide the theoretical basis for the subsystem index verification and the guidance and control system design.
雷达导引头是导弹拦截和跟踪辐射源的核心部件。在导弹发射精度分析中,导引头的性能起着非常重要的作用。为了分析导引头性能参数对制导精度的影响,本文主要做了以下工作。首先,建立了主动雷达导引头的数学模型。其次,选取并分析了对导引头性能参数有典型影响的三个误差因素,建立了数学模型;最后,考虑了三种误差因素对导引头的影响,对导弹的飞行姿态进行了数值模拟。结果表明,主动雷达导引头的性能参数对导弹制导精度有较大影响,可为分系统指标验证和制导控制系统设计提供理论依据。
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引用次数: 2
Research on multi-target bearings-only tracking method based on passive sonar systems 基于被动声呐系统的多目标单方位跟踪方法研究
Zhengda Xiong, Ke Xu, Yong Chen, Gang Li, Jianwei Wan
This paper proposes a real-time multi-target tracking method for passive sonar systems based on bearing time record (BTR). Extremum detection and logical data association algorithm are employed in the method to detect and process the beginnings, tails, crossings and missing sections of tracks. As generated data is adopted in other works, data form field scenario is processed in this paper to evaluate practical qualification. As experimental results shown, this method have a well performance in practical environment.
提出了一种基于方位时间记录(BTR)的被动声呐系统实时多目标跟踪方法。该方法采用极值检测和逻辑数据关联算法对轨迹的起点、尾部、交叉点和缺失路段进行检测和处理。由于在其他工作中使用了生成的数据,因此本文对数据形式进行现场场景处理,以评估实际合格性。实验结果表明,该方法在实际环境中具有良好的性能。
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引用次数: 4
Architecture and experiment of remote monitoring and operation management for multiple scales of solar power plants 多规模太阳能电站远程监控与运行管理的体系结构与实验
Guangyu Liu, Haoxiang Qiu, Ling Zhu, Yun Chen
The ever increasing solar energy is one of the most promising renewable energies, which undergoes the advance of new technologies. The field lacks a high-tech system that provides some flexible, affordable and high quality hardware and web applications for both domestic users in the scale of Kilo-Watts and industry clients in the scale of Million Watts to Giga-Watts. For this purpose, a general architecture with wireless sensor network and cloud service technologies is proposed for remote monitoring and improving the performance of various scales of solar power plants. It consists of a physical layer, a communication layer and an application layer. A prototype system is developed and built. Some cutting edge techniques in smart sensing, communication, and interactive web application are incorporated. Outdoor experiments over thousands of miles are carried out where two clients monitor and manage remotely the operation of the same solar power plant. Experimental results are recorded and compared. It shows that the prototype system works well in terms of automatic data acquisition, telecommunication, and data driven web applications. The associated products can be applied to the solar power industry.
太阳能是一种新兴的可再生能源,其发展日新月异。该领域缺乏一种高科技系统,可以为千瓦级的国内用户和百万瓦到千瓦级的工业客户提供一些灵活、负担得起的高质量硬件和网络应用程序。为此,提出了一种结合无线传感器网络和云服务技术的通用架构,用于远程监控和提高各种规模太阳能电站的性能。它由物理层、通信层和应用层组成。开发并构建了一个原型系统。结合了智能传感、通信和交互式web应用方面的一些前沿技术。在数千英里的户外实验中,两个客户远程监控和管理同一个太阳能发电厂的运行。对实验结果进行了记录和比较。结果表明,该原型系统在自动数据采集、通信和数据驱动的web应用程序方面工作良好。相关产品可应用于太阳能发电行业。
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引用次数: 4
An improved automatic MPI code generation algorithm for parallelizing compilation 一种改进的并行编译MPI代码自动生成算法
Yang-Xia Xiang, Caisen Chen, Hongyan Wang, Zeyun Zhou
Open64 is an open source compiler with powerful analysis and widely used as a research and commercial development platform. However, it has not been designed and developed to realize MPI parallelization. There are many contributions in the paper. Firstly, the Open64 compiler infrastructure is showed. Secondly, the location of MPI code generation in the Open64 compiler architecture is analyzed. Thirdly, an Open64-based automatic generation algorithm for MPI code is presented. By the experiments of testing the NPB benchmarks, the results show that the approach not only has a high rate of parallel transformation, but also can produce correct MPI parallel programs.
Open64是一个具有强大分析功能的开源编译器,被广泛用作研究和商业开发平台。然而,目前还没有实现MPI并行化的设计和开发。这篇论文有许多贡献。首先,介绍了Open64编译器的基本结构。其次,分析了MPI代码生成在Open64编译器体系结构中的位置。第三,提出了一种基于open64的MPI代码自动生成算法。通过NPB基准测试实验,结果表明该方法不仅具有较高的并行转换速率,而且能够生成正确的MPI并行程序。
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引用次数: 1
Software defect prediction based on geometric mean for subspace learning 基于几何均值的子空间学习软件缺陷预测
Yan Gao, Chunhui Yang, Lixin Liang
Due to the confusion of fault-prone software modules and non-fault-prone ones, and the limit of traditional mothed such as LDA and PCA, the performance of software defect prediction model is difficult to improve. In this paper, we present GMCRF, a method based on dimensionality reduction technique and conditional random field (CRF) for software defect prediction. In our proposed method, firstly, we leverage geometric mean for subspace learning to choose the best combination of features from data set. Secondly, we propose to apply the best combination of features which is selected by geometric mean-based approach in CRF model. Interestingly, we find that the GMCRF method achieves much better final results than the other approach as shown in the software defect data classification task.
由于易故障软件模块与非易故障软件模块的混淆,以及LDA和PCA等传统方法的局限性,软件缺陷预测模型的性能难以提高。本文提出了一种基于降维技术和条件随机场(CRF)的软件缺陷预测方法GMCRF。在我们提出的方法中,首先,我们利用几何均值进行子空间学习,从数据集中选择最佳的特征组合。其次,我们提出将基于几何均值的方法选择的特征的最佳组合应用于CRF模型。有趣的是,我们发现GMCRF方法取得了比其他方法更好的最终结果,如软件缺陷数据分类任务所示。
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引用次数: 5
The error analysis of Hemispherical Resonator Gyro based on a vibration model 基于振动模型的半球形谐振陀螺误差分析
Xu Wang, J. Xue, Qingsong Wang
Due to the technical limits of the Hemispherical Resonator Gyro (HRG) resonator manufacture, some errors are inevitable which will seriously affect the performance of HRG. Among those errors, the mass unbalance, frequency split and inhomogeneous damping are the main factors resulting in the output drift of HRG. In this paper, resonator vibration equations are transformed into an ellipse precession model based on a mass vibration model. Then, these errors items included in this model which have a strong influence on the vibration mode of the HRG resonator are respectively discussed. The analysis results are validated by the HRG system, which can prove the validity and correctness of the theoretical analysis. All of those conclusions shed light on the further improvement of HRG performance.
由于半球谐振陀螺(半球面陀螺)谐振器制造的技术限制,不可避免地会出现一些误差,这些误差将严重影响半球面谐振器的性能。其中,质量不平衡、频率分裂和阻尼不均匀是导致HRG输出漂移的主要因素。本文在质量振动模型的基础上,将谐振腔振动方程转化为椭圆进动模型。然后,分别讨论了模型中对HRG谐振器振动模态有较大影响的误差项。通过HRG系统对分析结果进行了验证,验证了理论分析的有效性和正确性。所有这些结论都为进一步提高HRG性能提供了线索。
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引用次数: 4
The vibration analysis for transformer winding based on multi-field coupling 基于多场耦合的变压器绕组振动分析
Hemeng Peng, Y. Pan, J. Hu, Chuan Yang, Yong Wang, Kunlun Wu
Mathematical models for DC bias vibration analysis of the transformer winding are developed. The model is combined into multi-physical field coupling modeling for vibration analysis of the transformer. By applying the primary voltage as excitation and under different DC bias, vibration of the transformer winding is simulated and analyzed. The simulation results verify the method which is proposed transformer magnetic vibration field coupling analysis with dc bias is effective.
建立了变压器绕组直流偏置振动分析的数学模型。将该模型与多物理场耦合建模相结合,用于变压器的振动分析。以一次电压为激励,在不同直流偏置下,对变压器绕组的振动进行了仿真分析。仿真结果验证了所提出的考虑直流偏置的变压器磁场耦合分析方法的有效性。
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引用次数: 2
Design of variable delay elements for ultra-wideband beam-forming 超宽带波束形成中可变延迟元件的设计
Li Wenyuan, Wang Yanqing, Chen Yang
A variable true-time delay (TTD) circuit operating in ultra-wideband (UWB) systems is presented. The delay element based on the RC filter employs operational transconductance amplifier (OTA) which includes current mirrors in order to realize variations of the group delay. Using Taylor approximation, combining the low-pass filter and highpass filter, flatter gain and group delay are obtained in UWB. The true time delay line operates in the 3.1–10.6 GHz UWB range, and the simulation results achieve the maximum group delay of 40 ps and continuously variable delay. The circuit is implemented in a 0.13 μιη SiGe BiCMOS process, the true-time delay circuit occupies an active area of 0.4125 mm2 and consumes 74.7 mW from a 3.3 V supply.
提出了一种工作在超宽带系统中的可变实时延迟(TTD)电路。基于RC滤波器的延迟元件采用包含电流镜的运算跨导放大器(OTA)来实现群延迟的变化。采用泰勒近似,结合低通滤波器和高通滤波器,在超宽带中获得了更平坦的增益和群延迟。真实时间延迟线工作在3.1-10.6 GHz UWB范围内,仿真结果实现了最大群延迟40 ps和连续可变延迟。该电路采用0.13 μιη SiGe BiCMOS工艺实现,实时延迟电路的有源面积为0.4125 mm2,功耗为74.7 mW,电源为3.3 V。
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2017 IEEE 2nd Advanced Information Technology, Electronic and Automation Control Conference (IAEAC)
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