Abstracts of number Journal of instrument engineering

INFORMATION TECHNOLOGIES AND SYSTEMS

QUANTITATIVE ESTIMATES IN NATURAL LANGUAGE MODELING Irina E. Voronina

The problem of natural language processing is considered as applied to underspecified object modeling. The approach offered in the paper addresses the problem of quantitative estimates of linguistic units’ collocation.

ALGORITHMS OF INSTRUMENT-MAKING PRODUCTS DESIGN AUTOMATION Gatchin Yuri A, Donetskaya Julia V. , Irina B. Komarova

Algorithms of products design automation are considered. The algorithm in question are intended for electronic products structure development and editing, and technical documentation loading.

MATHEMATICAL PRINCIPLES OF DIGITAL HALFTONING Drozdov Valentine Nilovich, Elena A. Shefer

The problem of replacement of continuously varying light flow reflected from absorbing filter on a substrate by two-level signal is considered. The problem is reduced to pulse-width modulation of two-dimensional signal. Various methods of signal conversion to binary raster data are analyzed.

COMPUTING TECHNIQUE

HIGH-PERFORMANCE HIGH-CAPACITY ARBITER OF DEMAND PROCESSING Eugeny A. Titenko, Eugeny A. Semenikhin

A method is proposed for parallel-conveyor processing of high-capacity demands. Technical implementation of the arbiter is described.

DEVELOPMENT OF GENERAL MODEL OF ELECTRONIC ARCHIVE OF ENGINEERING DOCUMENTS WITH THE USE OF IDEF METHODS Малинин А. А., Иванова Н. Ю.

The problem of modeling of digital archive of engineering documents is considered. Peculiarities of CAD documents processing are demonstrated. A functional model of digital archive of engineering documents is described.

ESTIMATE OF TYPE RECOGNITION ACCURACY OF AUTOMATED PROCESSING OF AERIAL PHOTOGRAPHS Igor V. Manylov

Comparison of algorithms for Euclidian and Makhalanobis spacing calculation is performed. The results are applied to the problem of accuracy of aerial photographs decoding for estimation of agricultural area conditions.

GYROSCOPIC AND NAVIGATION SYSTEMS

COURSE EVALUATION IN INTEGRATED NAVIGATION SYSTEM ON THE BASE OF MICROMECHANICAL SENSORS Emelyantsev Gennady Ivanivich, Boris A. Blazhnov, Alexey Lochehin, Alexey P. Stepanov

The problem of object orientation parameters determination with the use of integrated system of orientation and navigation (ISON) is considered. In the case under analysis, integrated data from inertial measurement module (IMM) and receiving equipment of satellite navigation system are used, and the ISON is started in the moving object, so the problem is reduced to initial alignment and calibration of IMM. Results of navigation tests carried out with an IMM prototype on the base of micro-mechanical sensors by Concern CSRI Electropribor are presented.

INSTRUMENTS AND SYSTEMS OF AUTOMATIC CONTROL

METHOD OF CONSTRUCTION OF ADAPTIVE AUTOMATIC CONTROL LOGIC-DYNAMIC SYSTEM WITH SELECTOR Valery I. Petunin, Arkady I. Frid

The problem of control over multidimensional object with sole operating action and channel selector is considered. Application of adaptation algorithms is shown to provide an effective mean for construction of corresponding logic-dynamic system. Questions of the control system synthesis are analyzed. Results of modeling are presented.

OPTIMAL CONTROL OVER LOAD MOVEMENT WITH BRIDGE CRANE Sergey A. Kabanov, Eugeny N. Nikulin, Boris E. Yakushev, Darya B. Yakusheva

The problem of control over load movement by overhead-type crane with the use of various optimization methods is considered. Convergence of iteration procedure of corresponding boundary value problem solution is analyzed. Theoretical conclusions are illustrated with results of digital simulations.

ELECTRONIC AND ELECTROMAGNETIC DEVICES

SPEED CONTROL SYSTEM OF TWO-MASS MECHANISM USING COORDINATES OBSERVER Abdullin Artur A, Tolmachov Valeriy

Three-circuit speed subsystem of follow-up motor of telescope guidance system with two-mass executive axle and additional second mass observed velocity feedback is considered. A vector-matrix mathematical model of the subsystem is proposed and used for analysis of observer errors effect on static and dynamic system characteristics.

PROCESS SPEED MEASUREMENT IN DETONATION TUBES USING IONIZATION DETECTORS Pavel A. Galaydin, Yusif N. Mustafaev, Anton I. Musteykis

Controlled detonation makes it possible to create new jet propulsion systems and power plants. A test model is developed to study processes running in detonation tube. Ionization detectors are used as sensors in combination with an efficient system for measurement and record of obtained results.

OPTICAL AND OPTO-ELECTRONIC INSTRUMENTS AND SYSTEMS

ERROR ANALYSIS OF AUTOCOLLIMATOR CONTROL SYSTEM WITH ACTIVE COMPENSATION Andrey E. Gorodetskiy, Maxim S. Doroshenko, Irina L. Tarasova, Konyakhin Igor A.

A method is proposed to extend autocollimator measurements range by means of active compensation for reference object turning angle. The effect of automated control system on measurement accuracy is analyzed. Application of galvanometer drive in control system is shown to be effective for dynamic errors reduction and measurement time diminishing.

LABORATORY SPECTROPHOTOMETER FOR ULTRAVIOLET SPECTRAL REGION Nikolay P. Belov, Olga S. Gaydukova, Igor A. Panov, Alexander Patyaev, Yuri Smirnov, Sherstobitova Aleksandra S, Yaskov Andrey D.

Design peculiarities, technical features, and basic performance characteristics of laboratory spectrophotometer for measuring UV spectral transmission of various objects are considered. Results of device testing with solid state optical materials, aqueous solutions of phenols and oil products are presented. Perspectives of the spectrophotometer employment in control over chemical technological processes (e.g., bleaching in pulp industry) are also discussed.

HEAT REGIMES AND RELIABILITY OF INSTRUMENTS AND SYSTEMS

OPTIMAL DESIGN OF EXPERIMENT ON HEAT EXCHANGE PROCESSES IDENTIFICATION IN HEAT FLOW SENSORS Pilipenko Nikolay V., Yaroslav V. Kazartsev

A method of experimental design for heat exchange processes identification in heat flow sensors is proposed. The method is based on solution to inverse problem of thermal conductivity. The method provides a mean for development of sensors for unsteady heat flow measurement in accordance with technical requirements.

AIRBORNE HEAT DIRECTION FINDER Demin Anatoly V., Alexander V. Sorokin, Гордеев Д. М., Maxim A. Belyansky, Alexey G. Shalkovskiy, Alexey B. Churikov, Alexander S. Smolin, Anastasia S. Ptitsyna

A new airborne thermal direction finder is developed. The instrument is designed for detection and direction-finding of high-speed aircrafts.

BRIEF NOTES

VIRTUAL PROVING GROUND FOR STUDYING OF EXTREME DYNAMICS OF MARINE OBJECTS AT IRREGULAR SEA WAVES Alexey Bezgodov, Boukhanovsky Alexander V

Peculiarities of virtual reality technologies application to computer simulation of extreme dynamics of marine vehicles at irregular sea waves are considered. Problem of interpretation of results of extreme dynamic calculation is also discussed.

PROBABILITY DISTRIBUTION OF LEVEL-CROSSING INTERVALS FOR GAUSSIAN RANDOM PROCESS AND POSSIBLE CONSTRUCTION OF NEAR-FIELD LASER LOCATION SYSTEM WITH NOISE SYNCHRONIZATION Lebedko Yevgeny Georgievich, Maria Serikova

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A possible schematic of optical near-field location system with noise synchronization is proposed on the base of investigation into the probability distribution of level-crossing intervals of normal random process.

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