Construction of characteristic sets for individually adapted pilot support in typical flight regimes

An approach to solution of problems of individually adapted support of actions of the pilot in typical flight regimes is developed. This approach can be recommended, in particular, in the course of preparation and re-preparation of air crew and for implementation of onboard expert systems of advanced aircrafts. The basis of the proposed approach is based on integral evaluation of control actions of the pilot formed based on indirect data and thus not requiring online registration of factors reflecting the current psychophysiological state of the pilot. In this case, data of the regular onboard measurement system of the aircraft are used for obtaining the mentioned integral evaluation. The method of implementation of this approach to evaluating control actions of the pilot based on the formation and parametric representation in the state space of the “aircraft-pilot” system of individual reachable set used further for creation of “Electronic passport of the pilot” is proposed. Algorithms for construction of such sets in the class of ellipsoids and cubes of confidence and their compact representation in the form of the individual probabilistic profile of the pilot are described. Results of simulation of the process of obtaining such sets, which prove the efficiency of the developed concept, are presented     

Multidimensional analysis in problems of education qualimetry

A wide range of problems is solved in the field of educational qualimetry. They are student education quality control, ranking of departments of educational institutions, comparison and evaluation of the quality of the educational process in basic centers and branches of remote education, establishment of equivalent qualifications, mutual acknowledgment of education certificates of the Russian Federation and other countries, and so on. It is reasonable to use statistical methods of multidimensional analysis (principal component and factor analysis) to create a system of objective monitoring of the quality of the educational process. The problem of interpretation of principal components in problems of education qualimetry is considered. Principal components of educational-methodical unions of a particular profession are proposed as the criterion of evaluation of the quality of the educational process of a university under study.     

煤炭工业信息化现状与发展趋势研究

根据"十二五"期间我国煤炭工业信息化的发展要求,介绍了我国煤炭工业信息化发展现状和存在的问题,分析了我国煤炭工业信息化发展需求,提出了未来我国煤炭工业信息化发展的建议。     

Cascade Design of a Manipulator Control System with Consideration for Dynamics of Electric Drives

A methodological approach is suggested to cascade design (synthesis) of a control system of a robotic manipulator operating under the conditions of uncertainty and the action of external disturbances with due regard for the dynamics of direct-current drives. To solve the problem of tracking of prescribed trajectories, suggestion is made of the algorithmic two-level decomposition with the separation of the initial problem of control synthesis into independently solvable subproblems of a smaller dimension: synthesis of control actions in a mechanical subsystem and synthesis of control actions in actuators with the further subdivision of the problems of synthesis in each of subsystems into elementary subproblems. A problem is solved for the security of invariance to disturbances with the aid of the methods involving the systems with high gains and discontinuous controls and the composite control. Decomposition procedures are evolved of the synthesis of observers on the basis of measurements of positions of a manipulator and armature currents of electric drives.     

新型煤矿中央变电所供电系统的研究与设计思路

通过分析目前煤矿中央变电所供电系统的技术现状,提出了一种新型煤矿中央变电所供电系统的设计思路。该供电系统主要用于解决煤矿中央变电所配电装置控制电源的可靠性问题。实际应用表明,该供电系统使得煤矿中央变电所的高压真空配电装置动作更加准确、可靠。     

Analysis of optimal motion control for a material point in a central field with application of quaternions

This work is devoted to a survey and generalization of results obtained in the theory of optimal motion control for a material point in the central Newtonian gravitational field using the Pontryagin’s maximum principle and quaternion models of orbital motion. This theory is very important in space flight mechanics, being the background of the solution of optimal control problems of the motion of the center of mass of a space vehicle. In the first part of this work, a survey of quaternion models of the motion of a material point in a central Newtonian gravitational field is given, their advantages and disadvantages are analyzed. The formulation of the optimal control problem of the motion of a material point in the central Newtonian gravitational field and its correlation with the optimal control problem of the motion of the center of mass of a space vehicle is considered. The main problems arising in the solution of optimal control problems of the motion of a material point using the maximum principle, including instability in the Lyapunov’s sense of solutions to adjoint equations, are studied. It is shown that efficiency of analytical investigation and numerical solution of the corresponding boundary-value problems can be increased by the application of quaternion models of orbital motion.     

Framework analysis of the object domain of stationary dynamic problems of the elasticity theory for isotropic media with arbitrary discontinuities

A general scheme of framework analysis of an object domain is considered. The domain involves a wide class of problems of the theory of dynamic elasticity, which allows one to develop a software tool for the synthesis of applications (a CASE method) of parallel high-precision numerical solution of this class of problems. This article proposes a scheme of parallel high-precision solution to systems of singular integral equations that occur in the analysis of certain problems of diffraction of elastic harmonic waves on systems of discontinuities of an arbitrary cross-section. New computational results are presented.     

物联网体系架构的研究

物联网应用于生活的方方面面。物联网(IOT)的大量终端设备不断接入网络,产生大量的数据,物联网的各种终端设备之间的如何连接,如何进行数据通信,如何保证通信安全都是一个很复杂的问题。物联网体系结构的研究是将物联网的功能划分为不同的层次,每一层完成相应的任务,从而保证物联网的功能的正确完成。随着边缘计算的发展,传统物联网体系结构的内容发生了一些变化。物联网中引入边缘计算,可以更好地解决网络安全、负载和延迟等问题。随着未来5G技术的发展,物联网体系结构将在继续发生变化。     

A system of models of a short-lived rocket-induced “Ozone Hole”

We studied the mechanisms of perturbation of the stratosphere by jet exhausts of rocket vehicles and regularities of the recovery of the stratospheric parameters. Asymptotic methods are used to analyze different scenarios of noncatastrophic ozone destruction, one of which is identified as a real mechanism of perturbation of the stratospheric photochemistry during launches of liquid-fuel rockets. Models of the turbulent diffusion of rocket plume and parameters of the initial perturbation are refined. The results of the work markedly increase the realism of the corresponding computer models.     

A Mathematical Cybersecurity Model of a Computer Network for the Control of Power Supply of Traction Substations

Based on the analysis of the problem of cybersecurity, it is shown that its solution is connected with the solution of a complex of interdependent problems whose features follow from the topology of a cyberspace. A graph is proposed that adequately reflects the topology of the computer network for the control of a system of power supply of traction substations and its mathematical model as the basis for the creation of modern cybersecurity models. The developed mathematical model of cybersecurity of a computer network is based on the theory of Pukhov’s differential transforms. The criterion of cybersecurity is formalized, and a minimax principle is proposed for the minimization of a functional in cases of worst combinations of intensities of flows of cyberattacks and protective actions. An intelligent method is developed to search for an optimal strategy for ensuring the cybersecurity of a computer network by the investigation of the functional formalized in this article for extremum.     

Estimation of dynamics of risk factors by the dynamic regression method

A problem is considered for the estimation of dynamics of risk factors and other indicators of health by the data of a number of population studies performed in various years on the same age category of the population. In the case of the nonlinear time dependence of mean values of the quantities under study, the simple interpolation of the indices by all groups leads to incorrect estimates in view of the neglect of the cohort dynamics. A methods is described for the development and identification of the dynamic regression model of the population health, which is based on the estimation of the cohort dynamics of indices. This makes it possible to prognose the expected lavels of risk factors and to clarify causal relations. The efficiency of the model is demonstrated by an example of the processing of results of the examinations performed in the years 1982, 1987, and 1992 in North Karelia (Finland).     

Algebraic Properties of Cores of Generalized Neurofunctions

This paper considers generalized neural elements and identifies the conditions for implementation of functions of algebra of logic from these elements. We introduce the concept of a modified core of Boolean functions with respect to the system of characters of a group on which functions of algebra of logic are given. The criteria of belonging these functions to the class of generalized neurofunctions are provided. The algebraic structure of cores of Boolean neurofunctions is studied. On the basis of properties of tolerance matrices, a number of necessary conditions for implementation of Boolean functions by one generalized neural element are obtained. The obtained results allow to develop efficient methods of synthesis of integer-valued generalized neural elements with a large number of inputs that can be successfully applied in solving information compression and transmission problems, as well as discrete signal recognition problems.     

船舶电缆虚拟敷设仿真平台的研究与实现

针对船舶电装生产设计中电缆敷设设计复杂繁琐,效率低下的问题,结合实际电缆敷设设计的流程,开发了基于AutoCAD二次开发的船舶电缆虚拟敷设仿真平台。重点对虚拟敷设通道数学模型的建立、交互式图形敷设方式的设计、带限制条件的最短路径算法的实现和电缆通道的仿真进行了详细阐述。电缆虚拟敷设平台的开发已经完成,初步实现了船舶电缆的虚拟敷设。该平台为电装设计人员提供了一种直观,动态的敷设设计方式,简化了电缆敷设设计过程,提高了敷设设计的效率和质量,同时节省了电缆用量。     

Minimization of error functionals over perceptron networks

Supervised learning of perceptron networks is investigated as an optimization problem. It is shown that both the theoretical and the empirical error functionals achieve minima over sets of functions computable by networks with a given number n of perceptrons. Upper bounds on rates of convergence of these minima with n increasing are derived. The bounds depend on a certain regularity of training data expressed in terms of variational norms of functions interpolating the data (in the case of the empirical error) and the regression function (in the case of the expected error). Dependence of this type of regularity on dimensionality and on magnitudes of partial derivatives is investigated. Conditions on the data, which guarantee that a good approximation of global minima of error functionals can be achieved using networks with a limited complexity, are derived. The conditions are in terms of oscillatory behavior of the data measured by the product of a function of the number of variables d, which is decreasing exponentially fast, and the maximum of the magnitudes of the squares of the L(1)-norms of the iterated partial derivatives of the order d of the regression function or some function, which interpolates the sample of the data. The results are illustrated by examples of data with small and high regularity constructed using Boolean functions and the gaussian function.     

物联网、大数据及云计算技术在煤矿安全生产中的应用研究

阐述了物联网、大数据及云计算技术的研究现状,指出3种技术之间的关系,即物联网产生大数据,大数据助力物联网;大数据需要云计算,云计算增值大数据。结合煤矿综合自动化的建设发展历程,研究了3种技术在煤矿安全生产保障中的作用和地位,提出了3种技术在煤矿生产安全保障中的关系:物联网是煤矿各个子系统建设的技术框架和路线图,大数据是矿山物联网建设的产物,云计算则是对大数据处理利用的技术手段,并指出基于物联网、大数据及云计算技术的煤矿安全生产监测监控系统将是主动式、多参数融合、具备预警功能的监测监控系统,可有效提升煤矿安全生产水平。     

Design of robust knowledge bases of fuzzy controllers for intelligent control of substantially nonlinear dynamic systems: II. A soft computing optimizer and robustness of intelligent control systems

The structure of intelligent control system (ICS) is analyzed, and the interrelations with conventional problems of the theory and practice of application of control systems are described. The analysis of the results of simulation of typical structures of intelligent control systems has allowed us to establish the following fact. The application of the technique of designing (presented in Part I), which is based on a fuzzy neural network (FNN), does not guarantee in general that the required accuracy of approximation of the training signal (TS) will be reached. As a result, under an essential change of external conditions, the sensitivity level of the controlled plant (CP) increases, which, on the whole, leads to a decrease in the robustness of the intelligent control system, and, as a consequence, to a loss of reliability (accuracy) of achieving the control goal. To eliminate the specified drawback of the neural network, a soft computing optimizer (SCO), which uses the technique of soft computing and allows one to eliminate the drawback, is applied, which results in an increase in the robustness level of the structure of the intelligent control system. The structure of the soft computing optimizer, which contains as a particular case the required configuration of an optimal fuzzy neural network, is considered. The main specific features of the functional operation of the soft computing optimizer and the stages of the process of designing robust knowledge bases (KB) of fuzzy controllers (FC) are described. The methodology of joint stochastic and fuzzy simulation of automatic control system based on the developed tool of the soft computing optimizer is discussed in order to test the robustness and to estimate the limiting structural capabilities of intelligent control systems. The efficiency of the control processes with application of the soft computing optimizer is demonstrated by particular typical examples (benchmarks) of models of dynamic controlled plants under the conditions of incomplete information about the parameters of the structure of the controlled plant and under the presence of unpredicted (abnormal) control situations. Examples of industrial application of robust intelligent control systems in actual control systems designed based on the soft computing optimizer are presented. Practical recommendations for improving the robustness level of intelligent control systems by using new types of computations and simulation are given     

Features of Estimation of the Main Key Performance Indicators of Work of Production of Technological Type. II. The Features of the Estimates of Quantitative Manufacture Indicators

The ways of plant’s product and energy flows measurement are discussed. The algorithms of computing cumulative flowrates within the specified time interval and error estimation formulae are included.This article continues consideration of features of estimates of the main KPI of work of production of technological type. In the previous article [1] features of estimates of qualitative indexes of production products were described. Features of estimates of quantitative indices of the products are given in this article.     

Models of representation of fuzzy temporal knowledge in databases of temporal series

the problem of representation of fuzzy knowledge in databases of temporal series is considered. The existing approaches to formalization and search of temporal knowledge in such databases are described. A new class of models for representation of fuzzy temporal knowledge in databases of time series is proposed in order to support the processes of knowledge revealing. The methodology of estimating the efficiency of representations based on the use of general-system principles of human thinking and speaking communication is presented. Based on the selected system of criteria, the advantages of the proposed class of models are substantiated.     

Synthesis and recognition of sequences

A string or sequence is a linear array of symbols that come from an alphabet. Due to unknown substitutions, insertions, and deletions of symbols, a sequence cannot be treated like a vector or a tuple of a fixed number of variables. The synthesis of an ensemble of sequences is a sequence of random elements that specify the probabilities of occurrence of the different symbols at the corresponding sites of the sequences. The synthesis is determined by a hierarchical sequence synthesis procedure (HSSP), which returns not only the taxonomic hierarchy of the whole ensemble of sequences but also the alignment and the synthesis of a group (a subset of the ensemble) of the sequences at each level of the hierarchy. The HSSP does not require the ensemble of sequences to be presented in the form of a tabulated array of data, the hierarchical information of the data, or the assumption of a stochastic process. The authors present the concept of sequence synthesis and the applicability of the HSSP as a supervised classification procedure as well as an unsupervised classification procedure