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Implementation of neural network controller for elastic two-mass system trained with full state feedback controller and state observer was presented in the paper.
This paper investigates the possibility of suppressing the effect of a priori uncertainty and nonlinear factors in technical plants using positioning systems with the help of adaptive control, synthesized using Lyapunov function based on an exo-model. Take note of dissipative adaptation and the presence of a boost in the adaptive signal whose degree is determined by the order of fast dynamics in the...
Numerical simulation of nonlinear dynamical systems with the chaotic behavior is the major research field in a modern computer science. The aim of this research was the experimental study of new symmetric numerical integration method as a basic method for the Aitken-Neville extrapolation scheme. The properties of the Sprott (B) chaotic nonlinear system was studied via computer simulation, and the...
In this article different types of models used initially in complex technical systems designing are described, and examples of their definition using object-attributive language are given.
This paper is devoted to the comparison of the numerically simulated Chua's circuit and the real circuit. The aim of the research was to figure out the factors affecting the computer simulation accuracy, and to find the ways to improve it. It was discovered that the most influence is exerted by an inaccuracy of the nonlinear Chua's diode characteristic measurement, a numerical integration method used...
Recursive algorithm is proposed to generate the coefficient matrix for a system of ordinary differential equations describing non-stationary system service that does not require withdrawal of the general equation of a system of homogeneous differential equations. An example of its implementation and results of the mutual testing of analytical and simulation models of non-stationary system service.
The present paper is devoted to the development of new techniques intended for multichannel signal processing. We study multichannel filter banks and their implementations for wideband monitoring tasks. The key point of the paper is a multichannel modification of the single-channel WOLA-algorithm, which can be considered as a generalization of a one-dimensional WOLA-algorithm for processing vector...
Ddefinition of the external characteristics of a two-winding synchronous generator in static and dynamic modes are discussed. Determination of the power distribution and influence of load on the generator windings transients process are presented.
In this paper we present our experience in quantum circuits design automation on the different notations basis. The need of rules and methods for generation of primitive quantum gates sequence for the quantum circuits on the basis of the Linear Nearest Neighbor (LNN) notation is shown. Our lexical verification methodology for quantum circuit specifications in each stage of its design is represented.
If the drive is designed based on the requirements for efficiency, it is necessary to check out effectiveness of control methods and design solutions at the modeling stage. For this purpose numerical model should provide measurements of the instantaneous values of efficiency. This paper offers method which allows calculations of the instantaneous efficiency of permanent magnet synchronous machine...
This paper presents an approach for development of a diagnostic system on the base of a combination of different methods for fault detection, isolation and identification. The important place is given to algorithms of diagnostics by means of support vector machine (SVM) and fault detection estimator together with bank of fault isolation estimators (FDE-FIE). The idea of this approach is illustrated...
The article deals with the organization of effective work of the development teams of complex software systems. The structure of the P2P network with peer interaction of actors with the information and communication environment is given. The auction mechanism is constructed and the game theory model of policy objectives to minimize the design time of software projects is described. The methodology...
Three dynamic process models (strategies) for software testing are offered, which provides the ability to use probabilities of error detection for each module. Labeled graphs, systems of differential equations, probability parameters of test processes and software testing states for these strategies are provided. Results for computational experiments are described.
In the paper are observed the issues of information models synthesis based on the "entropy" approach. There are presented variants of models adapted to different situations. Also are designed recommendations and the criteria for specific options selection. The proposed models are based on the standard statistical characteristics of analyzed parameters usage, and are compact and convenient...
In the technical vision, it is important to select the contours of the image correctly. This article presents the statement of this task, arising in it and variants of solutions.
Modeling of numerical differentiation of position sensor signals is carried out. Formulas with variable number of terms of series are compared. Accuracy ranking for each equation is done.
The formalism for multistage cyclic systems diagnostic state evaluation is presented. It provides possibility of flexible diagnostic state evaluation which is dependent on system operating mode. It is based on fault-tolerant systems design formalism and the changes of diagnose membership functions due to the different values of external information function. Small overview of the whole formalism of...
This paper presents an approach for development of a diagnostic system on the base of ANFIS networks for creation of reference models of pneumatic servo-motor actuated control valve in the mode without faults. Detection, localization and identification of faults is carried out on the basis of the analysis of extreme values of residuals. The idea of this approach is illustrated on a practical example...
The article describes the method of risks calculation on all stages of project life cycle on the basis of application of the Bayesian networks. Programmatic realization of this method is carried out by the Hugin software package.
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