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2018 Dynamics of Systems, Mechanisms and Machines (Dynamics)最新文献

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Network Simulation of Information System in Conditions Of Uncertainty 不确定条件下信息系统的网络仿真
Pub Date : 2018-11-01 DOI: 10.1109/DYNAMICS.2018.8601500
A. M. Semakhin
Effectiveness increase of information system design is a relevant objective. To solve the problem network model of information system organization in the conditions of uncertainty has been developed, operation numerical characteristics and parameters of network graph have been counted, estimate of probability of completion of work complex to a fixed term has been determined. As methods of study, methods of network planning and management in the conditions of uncertainty have been used. The results of the study allow increasing effectiveness of information system design.
提高信息系统设计的有效性是一个相关的目标。为解决不确定条件下的信息系统组织网络问题,建立了信息系统组织网络模型,计算了网络图的运行数值特征和参数,确定了工作复合体在固定期限内完成的概率估计。作为研究方法,本文采用了不确定条件下的网络规划与管理方法。研究结果可以提高信息系统设计的有效性。
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引用次数: 0
Comparative Analysis of Control Methods for Walking Robots with Nonlinear Sensors 非线性传感器步行机器人控制方法的比较分析
Pub Date : 2018-11-01 DOI: 10.1109/DYNAMICS.2018.8601490
S. Savin
In this paper, control of a bipedal walking robot is considered. There are a number of algorithms that had been successfully applied to legged systems. In this work, we compare and analyze three such controllers: computed torque controller, linear quadratic regulator and a quadratic programming-based controller. Specific attention is given to the influence of sensing inaccuracies on the performance of the robot’s control system. The study covers the cases when a state observer is used to compensate for sensor inaccuracies, as well as the cases when there are significant joint torque limits.
研究了一种双足步行机器人的控制问题。有许多算法已经成功地应用于有腿的系统。在这项工作中,我们比较和分析了三种这样的控制器:计算转矩控制器、线性二次调节器和基于二次规划的控制器。特别注意了传感误差对机器人控制系统性能的影响。该研究涵盖了使用状态观测器来补偿传感器误差的情况,以及存在显著关节扭矩限制的情况。
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引用次数: 2
Methodology of Software Code Decomposition Analysis 软件代码分解分析方法
Pub Date : 2018-11-01 DOI: 10.1109/DYNAMICS.2018.8601441
I. O. Bazhenov, I. Lubkin
Obtaining a list of programs linear blocks and the links between them is used in the tasks of research and software protection. According to the results of abstracting, the authors have not found the means of analysis of binary files to obtain this information. The purpose of the study is to facilitate the analysis of the software by creating a unified data provider about the structure of the analyzed program. The approach proposed in the research is focused on the decomposition and presentation of program code as a set of interrelated linear blocks and their relations. Presented in such form a code can be analyzed to identify patterns which have certain characteristics, which simplifies the process of secure software development. The proposed method is based on the development of a plugin that aggregates data from existing tools. The method of information extraction from the "IDA" disassembler and presentation in the form necessary for further work is developed. There is presented method's verification tests example. The data generated according to the methodology are intended for use in targeted software analysis tools
获取程序线性块及其之间的链接列表用于研究和软件保护任务。根据抽象的结果,作者还没有找到分析二进制文件来获取这些信息的方法。本研究的目的是通过创建一个关于被分析程序结构的统一数据提供者来促进软件的分析。研究中提出的方法侧重于将程序代码分解和表示为一组相互关联的线性块及其关系。以这种形式呈现的代码可以被分析以识别具有某些特征的模式,从而简化了安全软件开发的过程。所提出的方法是基于一个插件的开发,该插件可以聚合来自现有工具的数据。开发了从“IDA”反汇编器中提取信息并以进一步工作所需的形式表示的方法。给出了该方法的验证测试实例。根据该方法生成的数据旨在用于目标软件分析工具
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引用次数: 1
Perspective Neural Network Algorithms for Dynamic Biometric Pattern Recognition in the Space of Interdependent Features 相互依存特征空间中动态生物特征模式识别的透视神经网络算法
Pub Date : 2018-11-01 DOI: 10.25206/2310-9793-2018-6-4-130-145
A. Sulavko, S. Zhumazhanova, G. A. Fofanov
A model of neurons for biometric authentication, capable of efficient processing of highly dependent features, based on the agreement criteria (Gini, Сramer-von-Mises, Kolmogorov-Smirnov, the maximum of intersection areas of probability densities) is proposed. An experiment was performed on comparing the efficiency of neurons based on the proposed model and neurons on the basis of difference and hyperbolic Bayesian functionals capable of processing highly dependent biometric data. Variants of construction of hybrid neural networks, that can be trained on a small number of examples of a biometric pattern (about 20), are suggested. An experiment was conducted to collect dynamic biometric patterns, in the experiment 90 people entered handwritten and voice patterns during a month. Intermediate results on recognition of subjects based on hybrid neural networks were obtained. Number of errors in verification of a signature (handwritten password) was less than 2%, verification of a speaker by a fixed passphrase was less than 6%. The testing was carried out on biometric samples, obtained after some time period after the formation of training sample.
提出了一种基于一致性标准(Gini, Сramer-von-Mises, Kolmogorov-Smirnov,概率密度交集面积最大值)的生物特征认证神经元模型,能够有效处理高度依赖的特征。通过实验比较了基于该模型的神经元和基于差分贝叶斯函数和双曲贝叶斯函数的神经元处理高度依赖的生物特征数据的效率。混合神经网络结构的变体,可以在生物特征模式的少数例子(约20)上进行训练。进行了一项收集动态生物特征模式的实验,在实验中,90人在一个月内输入手写和语音模式。基于混合神经网络的主体识别得到了中间结果。签名(手写密码)验证的错误率小于2%,固定密码短语验证说话人的错误率小于6%。测试在训练样本形成一段时间后获得的生物特征样本上进行。
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引用次数: 2
Improving the Accuracy of Navigation Measurements of Mobile Network Nodes 提高移动网络节点导航测量的精度
Pub Date : 2018-11-01 DOI: 10.1109/DYNAMICS.2018.8601427
Y. Monakhov, M. Monakhov, A. Telny
This article presents the results of modeling the possibility to improve the accuracy of navigation measurements for nodes of mobile networks located on moving objects. When placing mobile nodes on aircraft with a satellite navigation system, it is possible to improve the accuracy of their positioning by predicting the location of the aircraft at the time of subsequent navigation measurements. Increasing the accuracy of location of mobile nodes can increase their availability by optimizing the network topology. In addition, it is possible to convert a random network topology into a non–random topology based on navigation measurements of network nodes. The authors believe that the method of determining the location of a moving object in space by imposing constraints related to the dynamic properties of an object is promising. This method can be used to integrate satellite navigation aids and airborne instruments for measuring the parameters of the aircraft's movement. The authors present experimental results of the analysis of the possibility of increasing the accuracy in determining the location of a moving object with the help of this method.
本文介绍了建模的结果,以提高移动网络节点定位在运动物体上的导航测量精度的可能性。当使用卫星导航系统将移动节点放置在飞机上时,可以通过在随后的导航测量时预测飞机的位置来提高其定位的准确性。通过优化网络拓扑结构,提高移动节点的定位精度,提高移动节点的可用性。此外,基于网络节点的导航测量,可以将随机网络拓扑转换为非随机拓扑。作者认为,通过施加与物体动态特性相关的约束来确定运动物体在空间中的位置的方法是有前途的。该方法可用于结合卫星导航辅助设备和机载仪器测量飞机运动参数。作者给出了实验结果,分析了利用该方法提高运动物体定位精度的可能性。
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引用次数: 2
RRT-based Motion Planning for In-pipe Walking Robots 基于rrt的管道行走机器人运动规划
Pub Date : 2018-11-01 DOI: 10.1109/DYNAMICS.2018.8601473
S. Savin
Planning paths on the inner surface of a pipe is one of the many problems that need to be solved in order to make practical use of in-pipe robots possible. In this paper, a motion planning algorithm based on rapidly exploring random trees (RRT) is proposed. The algorithm uses representation of the pipeline as a point cloud, which is easier to generate than the geometric representations required by some of the other existing motion planning algorithms for walking in-pipe robots. The properties of the algorithm and their dependence on the geometry of the pipe are studied.
规划管道内表面的路径是实现管道机器人实际应用所需要解决的众多问题之一。提出了一种基于快速探索随机树(RRT)的运动规划算法。该算法将管道表示为点云,这比其他一些现有的管道行走机器人运动规划算法所需的几何表示更容易生成。研究了该算法的性质及其对管道几何形状的依赖关系。
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引用次数: 8
Test Systems Control for the Electronics Industry 电子工业测试系统控制
Pub Date : 2018-11-01 DOI: 10.1109/DYNAMICS.2018.8601420
A. Nikonov, G. Nikonova
Overcoming the parametric uncertainty of the test-signals parameters of the test systems is an urgent topic. The goal is to ensure the reliability, depth and reliability of the control of electronic equipment of the UHF range. The task is to find a universal method of overcoming the uncertainty of the amplitude and time parameters of test signals of the nano- and subnanosecond ranges. We solve the problem of constructing a model of self-adjusting and adaptive control subsystem that shows its behavior during adjustment and takes into account the variation in the apparatus time parameters. As the result we get the structure of a self-adjusting and adaptive control system and the data on its research. Conclusions show the possibility of using the proposed self-adjusting and adaptive automatic control system in test systems. If the static and dynamic characteristics of the equipment and the test signal time parameters are changed, the control system monitors these changes and modifies the parameters of the regulator, while maintaining the optimum setting according to the specified criterion.
克服测试系统测试信号参数的不确定性是一个迫切需要解决的问题。目标是保证超高频范围内电子设备控制的可靠性、深度和可靠性。任务是寻找一种通用的方法来克服纳秒和亚纳秒范围内测试信号的幅度和时间参数的不确定性。我们解决的问题是建立一个自调节和自适应控制子系统的模型,该模型显示了其在调整过程中的行为,并考虑了设备时间参数的变化。最后给出了自适应调节控制系统的结构和研究数据。结论表明,所提出的自调节自适应自动控制系统在测试系统中应用的可能性。如果设备的静态和动态特性以及测试信号时间参数发生变化,控制系统监视这些变化并修改调节器的参数,同时根据指定的标准保持最佳设置。
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引用次数: 1
Multi-level Inverters Application Features for Medium Voltage Electric Drives 中压电力驱动的多级逆变器应用特点
Pub Date : 2018-11-01 DOI: 10.1109/DYNAMICS.2018.8601464
O. A. Lysenko, I. Y. Marchinskiy
the article analyzes the energy characteristics of a medium voltage electric drive with multilevel converters. The research relevance is confirmed by the diverse requirements for energy converters such as insuring high efficiency and power factor, and maximum reliability and stability. The study objective: the frequency-controlled electric drive’s dynamic characteristics analysis with using a multi-level voltage converter based on H-bridges structures. Research methods: the electric machines theory, power electronics, operational calculation, harmonic analysis, numerical simulation. The transient processes of the medium voltage induction motor during start-up are considered. To simulate the characteristics of the electric drive, the model of an asynchronous machine in a fixed coordinate system was used. A comparison is made of the electric drive characteristics as a whole with a multilevel inverter and with a three-phase inverter according to the bridge circuit. The multilevel medium voltage inverters efficiency, as well as the ways of further development, is shown.
分析了一种带多电平变换器的中压电传动的能量特性。对能源变换器的各种要求,如保证高效率和功率因数,以及最大的可靠性和稳定性,证实了研究的相关性。研究目的:采用基于h桥结构的多级电压变换器进行变频调速电传动的动态特性分析。研究方法:电机理论、电力电子学、运行计算、谐波分析、数值模拟。研究了中压感应电动机启动过程中的瞬态过程。为了模拟电传动的特性,采用了固定坐标系下的异步电机模型。根据桥式电路,从整体上比较了多电平逆变器和三相逆变器的电驱动特性。指出了多电平中压逆变器的效率及其进一步发展的途径。
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引用次数: 1
Evaluation of Peak Values of the Oscillation Processes Parameters 振荡过程参数峰值的评价
Pub Date : 2018-11-01 DOI: 10.25206/2310-9793-2018-6-4-47-52
A. Naumenko, I. Kudryavtseva, A. I. Odinets
Estimation of machinery health, identification of defects and deviations of dynamic mechanical and technological equipment, formation and determination of parameters and criteria of technical condition are based on the measurement of parameters of oscillatory processes. As a rule, as a source of information vibroacoustic oscillatory processes are used. Such processes are characteristic both for vibroacoustic-based diagnostics, and for acoustic-emission control. Many state evaluation criteria are based on the measurement of process peak parameters. Given the random nature of the processes, estimating the measurement error and determining the peak values of signals becomes an urgent task. The task of the given work is presentation of methodical bases of estimation of measurement error and determination of peak values of vibroacoustic signals taking into account laws of distribution of their instantaneous values. In particular, the paper presents a solution to the problem of determining the dependence of the asymptotic error estimate of the sample quantile on the value of discrete values in the sample (time realization of the signal). This allows us to justify and verify the metrology of measuring instruments. Besides it allows to estimate reliability of measurements of peak values of the vibroacoustic signal.
机械健康状况的评估,动态机械和工艺设备缺陷和偏差的识别,参数和技术条件标准的形成和确定,都是基于振荡过程参数的测量。通常,使用振动声振荡过程作为信息源。这些过程是基于振动声学的诊断和声发射控制的特征。许多状态评价标准都是基于过程峰值参数的测量。考虑到过程的随机性,测量误差的估计和信号峰值的确定成为一个紧迫的任务。本文的任务是在考虑振动声信号瞬时值分布规律的情况下,给出测量误差估计和峰值确定的系统基础。特别地,本文给出了确定样本分位数的渐近误差估计与样本中离散值(信号的时间实现)的依赖关系问题的一种解决方法。这使我们能够证明和验证测量仪器的计量。此外,它还可以估计振动声信号峰值测量的可靠性。
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引用次数: 2
Estimation of the Distribution Probability Density Acoustic Signals And Interferences, the Reconstruction Methods 声信号分布概率密度估计及干扰、重构方法
Pub Date : 2018-11-01 DOI: 10.1109/DYNAMICS.2018.8601477
Y. Kropotov, A. Belov, A. Y. Proskuryakov
In operation, methods of estimating probability density distributions are considered, which are urgent in the solution of the filtering issues of the useful information on the background of external acoustic noise in the telecommunications systems. Parametric and non-parametric methods of estimating probability densities are discussed, methods for determining an empirical distribution function for the case of a limited sample volume. It is shown that the approximation of the probabilities empirical data can be performed by the method of nuclear evaluations. Within this method, the estimate may be represented by the convolution of the core and the empirical density. It derives from the fact that the nuclear score is a result of a histogram of the histogram evaluation. It has been shown that reconstruction of the distribution function as a polynomial in the system of functions is the question of finding coefficients, which is the task of linear regression, which is solved by minimisation of the quadratic function of the loss built on the basis of the use of the least-squares method and representing the discrepancy of the empirical data and the estimates obtained on their basis. The results of the experimental studies show the error of the reconstruction one-dimensional function of probability density for the case of audio signals and acoustic interferences, given different kinds and orders of polynomial approximation.
在实际操作中,考虑了概率密度分布的估计方法,这是解决通信系统中有用信息在外部噪声背景下滤波问题的迫切需要。讨论了估计概率密度的参数方法和非参数方法,以及在有限样本量情况下确定经验分布函数的方法。结果表明,概率经验数据可以用核评价方法逼近。在这种方法中,估计可以用核心和经验密度的卷积来表示。它源于这样一个事实,即核分数是直方图评价的直方图的结果。已经证明,在函数系统中,将分布函数重构为多项式是求系数的问题,这是线性回归的任务,它是通过最小化基于最小二乘法建立的损失的二次函数来解决的,它表示经验数据与在其基础上得到的估计的差异。实验研究结果表明,在给定不同种类和阶次的多项式近似的情况下,重构一维概率密度函数对音频信号和声干扰具有较大的误差。
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引用次数: 2
期刊
2018 Dynamics of Systems, Mechanisms and Machines (Dynamics)
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