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2018 Eighth International Conference on Instrumentation & Measurement, Computer, Communication and Control (IMCCC)最新文献

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Level Set Evolution with SOM-Based Least Squares Twin SVM for Noisy Image Segmentation 基于som的最小二乘双支持向量机水平集进化的噪声图像分割
Xiaomin Xie
This paper presents a novel hybrid framework derived from the least squares twin support vector machine (LSTSVM) and active contour model (ACM) for noisy image segmentation. It contains a two-stage process, where the concurrent self organizing maps (SOM) are firstly employed to approximate the image intensity distributions to establish the original training sets for the LSTSVM. The training sets are then updated by adding the global region intensity means during the curve evolution. Further, the discrimination functions of the LSTSVM are embedded into the energy function of the ACM to guide the curve movement. Besides, a variable regional coefficient is designed in the energy function to enhance the noise robustness. Experiment results demonstrate that our model holds higher segmentation accuracy and more noise robustness.
提出了一种基于最小二乘双支持向量机(LSTSVM)和活动轮廓模型(ACM)的噪声图像分割混合框架。该算法分为两个阶段,首先利用并发自组织映射(SOM)近似图像强度分布,建立LSTSVM的原始训练集;然后通过在曲线演化过程中添加全局区域强度均值来更新训练集。进一步,将LSTSVM的判别函数嵌入到ACM的能量函数中,引导曲线运动。此外,在能量函数中设计了可变区域系数,增强了噪声的鲁棒性。实验结果表明,该模型具有较高的分割精度和较强的噪声鲁棒性。
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引用次数: 0
Research on Heterogeneity of Information System with Dissimilar Redundant Architecture Based on Attack Surface 基于攻击面的不同冗余架构信息系统异构性研究
Liqun Wang, Zheng Zhang, Weichao Li, Guangwei Xie
Cyber defenses based on heterogeneous redundant techniques have been proposed as a way to make systems more resistant to attacks. These defense approaches depend on the heterogeneous resources within the system in order to make attacks more complicated. However, little work has been done on evaluating or measuring heterogeneity among systems. In this work, we first build the attack surface model of information system with dissimilar redundant architecture. The attack surface model helps us identify the special system resources applied to the attack instances on a tested. Based on the analysis results, we get the attack surface resources of instance object. For the sake of increasing the system security, we construct the more heterogeneous executive entities by the attack surface resources. When we evaluate the heterogeneity among them, we conclude that the attack surface model administers to improve system security and its security increases as the heterogeneity of its executive entities becomes larger.
基于异构冗余技术的网络防御已被提出作为一种使系统更能抵抗攻击的方法。这些防御方法依赖于系统内的异构资源,从而使攻击变得更加复杂。然而,在评估或测量系统之间的异质性方面所做的工作很少。本文首先建立了具有不同冗余结构的信息系统的攻击面模型。攻击面模型帮助我们识别应用于被测试攻击实例的特殊系统资源。根据分析结果,得到了实例对象的攻击面资源。为了提高系统的安全性,我们利用攻击面资源构造了异构程度更高的执行实体。当我们评估它们之间的异构性时,我们得出结论,攻击面模型管理可以提高系统的安全性,并且随着其执行实体的异构性变得更大,其安全性也会增加。
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引用次数: 1
The Ethical Framework Design of Battlefield Robot 战场机器人伦理框架设计
Bofei Huang
This paper analyzes the moral challenges of battlefield robots and the safety risks of robots being destroyed or controlled. This paper suggests that a moral module should be added to the combat or killing of battlefield robots, and a moral framework based on the law of war and the rules of war is designed. The moral framework mainly consists of three kinds of control procedures, namely entity judgment, personnel judgement and behavior judgment, which enhances the moral control of battlefield robots.
本文分析了战场机器人的道德挑战以及机器人被摧毁或被控制的安全风险。本文提出在战场机器人的战斗或杀戮中加入道德模块,设计基于战争法和战争规则的道德框架。道德框架主要由实体判断、人员判断和行为判断三种控制程序组成,增强了战场机器人的道德控制性。
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引用次数: 0
Design of High Pressure Common-Rail System for a Large Power Diesel Engine Based on Simulation 基于仿真的大功率柴油机高压共轨系统设计
Haihong Chen, F. Zheng, Yun Lv, Biao Hou, Ye Tian
In order to research the High Pressure Common— Rrail System(HPCRS) for a large power diesel engine. In this paper, based on establishing a physical and math model of the system, the control manner of Proportional oil-in Control for fuel pressure control has been discussed and framed; the structure of the fuel injection system which adapt to this control manner has been design. The real time control system of large power diesel engine simulation model has been established though the fuel system simulation software and Matlab/Simulink software; the effects of the structural parameters to common-rail pressure were simulated. Finally, the high pressure common—rail system for a large power diesel engine was designed. As the result, it is turned out that the common—rail fuel pressure controlled by the control manner of Proportional oil-in Control and the strategy of PID could be setup less than 0.42s and stabilize by the range of 3% under manifold enactment pressure and the consistency of injection meet the challenge.
为了研究大功率柴油机高压共轨系统(HPCRS)。本文在建立系统物理模型和数学模型的基础上,探讨了比例进油控制在燃油压力控制中的控制方式;设计了适应这种控制方式的燃油喷射系统结构。通过燃油系统仿真软件和Matlab/Simulink软件建立了大功率柴油机实时控制系统的仿真模型;模拟了结构参数对共轨压力的影响。最后,对大功率柴油机高压共轨系统进行了设计。结果表明,采用比例进油控制方式和PID控制策略控制的共轨燃油压力在多种设定压力下可设定在0.42s以内并稳定在3%范围内,且喷油一致性满足要求。
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引用次数: 1
Implementation of Pulse Compression Algorithm Based on Multicore CPU 基于多核CPU的脉冲压缩算法实现
Nanyang Liu, Yue Zhang, Zengping Chen
To realize real-timely detection of low altitude aircraft target, this paper introduces a parallel model based on multicore CPU aiming at pulse compression (PC). Eight cores are utilized to process parallel intensive task. The detailed implementation of pulse compression (PC) algorithm is introduced in this paper. The result indicates that this design meets the requirement of real-timely pulse compression with one echo sample.
为实现低空飞机目标的实时检测,提出了一种基于多核CPU的脉冲压缩并行检测模型。采用8个核处理并行密集型任务。介绍了脉冲压缩(PC)算法的具体实现。结果表明,该设计满足单回波采样实时脉冲压缩的要求。
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引用次数: 0
Cooperative Guidance Technology for Multi-Agent System within Given Shape Target 给定形状目标下多智能体系统协同制导技术
Jiaxin Liu, Zhenchao Wei, Haiyan Sun, Mengtao Li
In order to improve the communication support capability of the telecommunication satellites in low altitude field, considering multi-agent system with high flexibility and wide reconnaissance as communication base station. A distributed control algorithm which combines artificial potential field with cluster movement based on sky-earth integration background is proposed in this paper. The motion model of air-launching multi-agent system is established based on artificial potential field between agents and targets. The fixed topology mode, distributed communication method together with virtual leader are used to control the movement direction of the cluster. The convergence conditions for the control system are discussed using Lyapunov stability. Simulations and experimental results illustrate the efficacy of the proposed method.
为了提高低空通信卫星的通信保障能力,将具有高灵活性和广泛侦察能力的多智能体系统作为通信基站。提出了一种基于天地一体化背景的人工势场与集群运动相结合的分布式控制算法。基于智能体与目标间的人工势场,建立了多智能体空中发射系统的运动模型。采用固定拓扑模式、分布式通信方式和虚拟leader来控制集群的移动方向。利用李雅普诺夫稳定性讨论了控制系统的收敛条件。仿真和实验结果验证了该方法的有效性。
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引用次数: 0
The Application of EKF in Parameter Identification of State-Space Model EKF在状态空间模型参数辨识中的应用
Jing Zhang, Zuo Zhou, Xiao-Na Huang
State-space model is an efficient tool for describing multiple input multiple output system, but the parameters identification of state-space model is a complicated problem, because in many cases, the parameters and state variables are all unknown in the model. Aiming at the shortcomings of the traditional identification method, in this paper, combined the unknown parameters and state variables of the state space model into a new state variable, then the linear state space model equation can be transformed into a nonlinear equation, and extended Kalman filtering(EKF) algorithm is used to estimate the new state variables. In this way, we can implement double estimates of the unknown parameters and state variables. Doing simulation and analysis with Matlab, the results show that the method can realize parameter identification and state estimation of state-space model effectively, which has higher precision and accuracy.
状态空间模型是描述多输入多输出系统的有效工具,但状态空间模型的参数识别是一个复杂的问题,因为在很多情况下,模型中的参数和状态变量都是未知的。针对传统辨识方法的不足,本文将状态空间模型的未知参数和状态变量组合成一个新的状态变量,将线性状态空间模型方程转化为非线性方程,并采用扩展卡尔曼滤波(EKF)算法对新状态变量进行估计。通过这种方法,我们可以实现未知参数和状态变量的双重估计。通过Matlab仿真分析,结果表明该方法能有效地实现状态空间模型的参数辨识和状态估计,具有较高的精度和准确度。
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引用次数: 0
Density-Based Fuzzy C-Means Multi-Center Re-Clustering Radar Signal Sorting Algorithm 基于密度的模糊c均值多中心再聚类雷达信号分选算法
Sheng Cao, Shucheng Wang
The strategic position of electronic warfare in modern warfare is constantly improving, and radar detection is the eye of modern information warfare and plays an important role in electronic warfare. This paper designs a new pulse radar sorting algorithm: a Density-Based Fuzzy C-Means Multi-Center Re-Clustering (DFCMRC) radar signal sorting algorithm. This algorithm combines the advantages of the DBSCAN density clustering algorithm and the fuzzy C-means (FCM) clustering algorithm. This paper also optimizes the structure of the DFCMRC algorithm? which changes the algorithm that randomly generated the initial center point to the CFSFDP algorithm. After comparison tests, the DFCMRC algorithm sorting result is better than the k-means algorithm, the DBSCAN algorithm and the FCM algorithm. Also, the membership degree description of DFCMRC is more reasonable than the FCM's. Accelerated optimized DFCMRC algorithm can reduce more than half iterations, which greatly shortens the algorithm calculation time.
电子战在现代战争中的战略地位不断提高,而雷达探测是现代信息战的眼睛,在电子战中发挥着重要作用。本文设计了一种新的脉冲雷达分选算法:基于密度的模糊c均值多中心重聚类(DFCMRC)雷达信号分选算法。该算法结合了DBSCAN密度聚类算法和模糊c均值聚类算法的优点。本文还优化了DFCMRC算法的结构。将随机生成初始中心点的算法改为CFSFDP算法。经过对比测试,DFCMRC算法的排序结果优于k-means算法、DBSCAN算法和FCM算法。DFCMRC的隶属度描述比FCM的更合理。加速优化后的DFCMRC算法可以减少一半以上的迭代,大大缩短了算法的计算时间。
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引用次数: 2
Study on Stress Characteristics of Dry-Type Cable Termination Bending Operation 干式电缆终端弯曲作业应力特性研究
Zhengbang Luo, Hui Zhao, Wang Li, Yongyan Yu, Yutong Xie
For the present stage of the project more practical application of 110kV Bo-shaped down lead cable arrangement, cable terminal different bending angle stress distribution was simulated based on finite element numerical simulation, and determine the impact of the bending angle on the uneven distribution of the terminal internal stress to provide reference for the determination of practical engineering cable terminal bending angle. The results showed that: Under the arrangement of 110kV Bo-shaped down lead cable, when the cable terminal bending angle of less than 5°, each layer of stress distribution is within the scope of its tensile strength, the safe and stable operation of the dry-type cable terminal can be ensured.
针对现阶段工程中较为实际应用的110kV bo形下引线电缆布置,基于有限元数值模拟的方法对电缆终端不同弯曲角度的应力分布进行了模拟,确定了弯曲角度对终端内应力不均匀分布的影响,为实际工程中电缆终端弯曲角度的确定提供参考。结果表明:在110kV bo型下引电缆布置下,当电缆终端弯曲角度小于5°时,各层应力分布在其抗拉强度范围内,可保证干式电缆终端安全稳定运行。
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引用次数: 0
Fault Diagnosis and Recovery Method for RAM of Spacecraft 1553B Bus Remote Terminal 航天器1553B总线远程终端RAM故障诊断与恢复方法
Rui Zhang, Lianlian Zeng, Feng Fang, Lijun Yang, Ming Li
Unexpected failure could be caused by single event of RAM of the 1553B bus chip, which affects spacecraft's stability on orbit. In this paper, the 1553B RT (remote terminal) chip RAM is divided into several segments and each segment has different failure detect strategy. Based on this, the application software can detect the faults and locate where it is, then through isolation or replacement of fault, it can be recovered from the fault. Through simulation and verification on platform of OBC (On Board Computer), the failure detects and recovery strategy described in this paper is effective and has much more advantage in time and accuracy than the traditional method depended on the ground telecommand.
1553B总线芯片的RAM单次故障可能导致意外故障,影响航天器在轨稳定性。本文将1553B RT(远程终端)芯片RAM分成若干段,每段具有不同的故障检测策略。在此基础上,应用软件可以检测故障并定位故障所在,然后通过隔离或替换故障,从故障中恢复。通过在机载计算机(OBC)平台上的仿真与验证,本文提出的故障检测与恢复策略是有效的,在时效性和准确性上都比传统的依赖地面指挥的方法有很大的优势。
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引用次数: 2
期刊
2018 Eighth International Conference on Instrumentation & Measurement, Computer, Communication and Control (IMCCC)
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