
Main / Archive /'Automation of Control Processes' # 1 (43) 2016
'Automation of Control Processes' # 1 (43) 2016
Contents
AUTOMATED CONTROL SYSTEMS
Aleksandr Kupriianovich Ivanov, Federal ResearchandProduction Center Joint Stock Company ‘ResearchandProduction Association ‘Mars’, Doctor of Engineering, Honoured Worker of Science and Engineering of the Ulyanovsk Region; graduated from the Faculty of Physics at Irkutsk State University; completed his postgraduate studies at Bauman Moscow Higher Technical School and his doctoral studies at Ulyanovsk State Technical University; Chief Staff Scientist at Federal ResearchandProduction Center Joint Stock Company ‘ResearchandProduction Association ‘Mars’; an author of monographs, articles, and a manual in the field of mathematical modeling of hierarchical realtime computeraided control systems. [email:
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]A. Ivanov


Building and Researching Dynamic Models of Information Processes in Complex Systems
The author researches the following schemes of processing information in complex systems: a sequent one with a different number of objects, a two or threelevel hierarchical scheme used in transferring information resources from the lowest levels to the highest ones, and a two or threelevel hierarchical scheme used in transferring information resources from the highest levels to the lowest ones. For all the schemes considered, the mathematical models in the form of linear differential equations with constant coefficients were built under simple but realistic assumptions as follows: the size of information resources does not change in case of processing; the speed of processing information on objects has a linear dependence on the size of information resources; the range of equation constant coefficients chosen allows to get the analytical solution. The author obtains analytical solutions of the system of differential equations showing the relationship between the size of information resources and the time on every object of the information processing schemes considered. The fundamental possibility of analytical solutions for any number of objects in a sequent scheme and any number of levels in a hierarchical system was shown. Dynamic models, information processing, complex systems, differential equations.


Aleksandr Viktorovich Shestakov, Rubin Research Institute JSC, Candidate of Engineering; graduated from Leningrad Higher Military Engineering School of Communications; First Deputy Director General of Rubin Research Institute JSC for Quality Assurance, Senior Researcher; an author of articles and inventions in the field of information system analysis and synthesis. [email: inforubin@rubinspb.ru]A. Shestakov


The Method of Validating the Structural Parametric Conformity of the Experimental Area to the Functional Communication System
The article considers decision making issues aimed at modernizing functional communication systems on the basis of advanced technologies. Conclusion can be drawn on the basis of the analysis. The attention is drawn to the conclusion consisting the fact that the most promising direction in this sphere is using experimental areas for validating system engineering solution in case of constructing and modernizing communication systems. However, experimental areas should have a similarity measure to the original (a functional communication network). Using a graph model of a communication system and the method of graph sparsification allowing to obtain samples(less dimensionality graphs) that are isomorphic with respect to the initial graph would be appropriate. The article reviews the algorithm of forming a graph model of an experimental area with the use of sparsification. It is shown that in the result of the initial graph sparsification, a sharpen sequence of samples (subgraphs) demonstrating the structure of a functional communication system on the corresponding stage of the modernization (also in the experimental area) was obtained. The authors consider the structure of the sequence samples for the specified number of modernization stages of the functional communication system got through the initial graph sparsification. The statement of the problem of forming the experimental area in the basis of structural parametric construction of the functional communication system is given. The analytical apparatus and the algorithm are demonstrated. The solutions of the application field extension for structuring the communication system for its sequent modernizing stage. The analytical correspondence between the target function and conditions of the task solution is demonstrated. As the result, the method of sequent transformation of the functional system structure into the experimental area with providing its structural parametric similarity to the original in the form of a set of corresponding procedures is presented. The original refers to the isomorphic communication system, which elements, functions, properties, and relations that are of importance to the system can be put into onetoone correspondence. Automated control systems, specialpurpose communication networks, network graph, graph model, experimental area, sparsification, samples, isomorphism.


Aleksei Robertovich Degtyarev, JSC Ulyanovsk Instrument Manufacturing Design Bureau, Postgraduate Student of Ulyanovsk State Technical University; graduated from the Faculty of Information Systems and Technologies of Ulyanovsk State Technical University; an engineer of JSC Ulyanovsk Instrument Manufacturing Design Bureau; specializes in the field of creation and development of aircraft and land vehicle hardware. [email: alexmind@rambler.ru]A. Degtyarev, Sergei Konstantinovich Kiselev, Ulyanovsk State Technical University, Doctor of Engineering, Head of Informatization Department at Ulyanovsk State Technical University, Professor at the Department of Measuring and Computing Systems; graduated from Ulyanovsk Polytechnic Institute with a specialty in Aircraft Instruments Engineering; the area of his scientific interests relates to the development of methods, models, algorithms, and equipment for automation of manufacturing, diagnosing, and testing of aircraft instruments, R & D organization; an author of monographs, a large number of papers, and patents in the field of instrumentation. [email: ksk@ulstu.ru]S. Kiselev


Reliability of Integrated Modular Avionics Reconfigurable Complexes
This paper briefly outlines the problems of calculations reliability for multiprocessor systems. The authors show disadvantages of the statistical calculations method for reconfigurable onboard equipment complexes. The preliminary system safety assessment procedure for the system developed is described. The helicopter onboard equipment complex, which is capable to function in cruise flight mode and in modes of landing and takeoff, was considered as an example. Respective hardware and functional graph was built. The graph takes into account functions criticality, data streams between them, and specific hardware features. Operating modes of the complex are also described. Evaluation of developed reconfiguration algorithms effectiveness was implemented with the use of Fault Tree Analysis (FTA) for the traditional federative architecture with double reservation and for the integrated modular avionics architecture that consists of a crate with the reserved commutation module. Respective fault trees were built and the numerical results of reliability evaluation were presented. In order to improve algorithms for performing better reliability, some recommendations are given. The authors also show the impossibility of implementing the reconfigurable architecture on the basis of the existing complexes with the dynamically reconstructive architecture. The architecture doesn't meet the requirements of complexes reliability and doesn’t comply with modern standards for airborne equipment development. Multiprocessor computing system, reconfiguration, reliability, fault tree.


Svetlana Aleksandrovna Rozhkova, Ogarev Mordovia State University, graduated from the Faculty of Mathematics and Information Technologies at Ogarev Mordovia State University; Postgraduate Student, Lecturer of the Department of ComputerAided Design at Ogarev Mordovia State University; an author of articles in the field of mathematical modeling of home energy management systems. [email: rozhkova_sa@mail.ru]S. Rozhkova, Vladimir Fedorovich Belov, Ogarev Mordovia State University, Doctor of Engineering, Professor; graduated from the Faculty of Electronics at Ogarev Mordovia State University; Head of the Department of ComputerAided Design at Ogarev Mordovia State University; an author of articles, monographs, and inventions in the field of the design of autonomous electric power systems, in which power quality parameters are controllable. [email: belovvf@mail.ru]V. Belov


Optimal Scheduling of Local Battery Storage
Nowadays energetics is characterized by consistent trend of the development of distributed power generation systems (microgrids) and alternative energy sources implementation as its components. In these systems using local electric batteries became actual and possible for automatic energy consumption management. These devices significantly increase the reliability and electronic characteristics of electricity supply through optimal choice of energy sources using rapid connection of the power sources to the power consumers. The authors analyze the algorithm for optimal control of the power system consisting of two energy sources  one of them is battery storage and another one is external centralized grid where timevarying electricity pricing is released. The problem of finding the algorithm for optimal control generation as a task of the creating working timetable of electric storage, which has to minimize expenses for power supply is considered. Within a given time interval, a microprocessor controls a power storage battery releasing process. Particle Swarm Optimization (PSO) is selected as a numerical method for solving this problem. Based on experiment numerical results that were performed, conclusions about effectiveness of developed battery schedule optimization algorithm are given; also recommendations were given for further improvements of microprocessor programming. Control, microgrid, electric energy consumption, battery energy storage, optimization, nonlinear programming, particle swarm optimization.


Sergei Grigorievich Chernyi, Kerch State Marine Technological University, Candidate of Engineering; graduated from Kherson National Technical University; Associate Professor at the Department of Electrical Equipment for Ships and Process Automation at Kerch State Marine Technological University; an author of articles in the field of expert systems and offshore drilling platforms. [email: sergiiblack@gmail.com]S. Chernyi, Anton Aleksandrovich Zhilenkov, Kerch State Marine Technological University, Candidate of Engineering; Associate Professor at the Department of Electrical Equipment for Ships and Process Automation at Kerch State Marine Technological University; an author of articles in the field of power systems. [email: zhilenkovanton@gmail.com]A. Zhilenkov


Processes Control Modeling in Complex Systems in Case of Indeterminate Perturbation Actions
The article presents the results of developing a computer model of an autonomous electric power station with the main sources of energy with driven dualfuel engines. Such engines are controlled by microcontroller systems. The model allows to solve a wide range of tasks concerning both management in the autonomous electric power industry and providing of the necessary indicators of power quality in power systems. The main power sources in such systems are the diesel gas generator sets working in parallel. They are sensitive to changes in the shaft loading. The combined models are developed in the Proteus system and Matlab/Simulink. The article addresses the challenge of sustainable of parallel operation of two or more diesel gas generators in autonomous power systems of offshore drilling platforms and facilities of water transport. The authors discuss the conditions of the system operation in the autonomous drilling platform where an abrupt change in the electrical network load makes it impossible to use the diesel gas generators since the latest ones are characterized by a high instability of the speed. Quality indicators, diesel gas generator, drilling platform, combined models.


INFORMATION SYSTEMS
Anatolii Nikolaevich Vetrov, SaintPetersburg State Electrotechnical University "LETI", Assistante at the Department of Automation and Control Processes; graduated from SaintPetersburg State Electrotechnical University "LETI" with a specialty in Control and Informatics in Technical Systems and from International Banking Institute with a specialty in Finance and Credit; an author of scientific papers in the field of the system and financial analysis based on cognitive modeling technology. [email: vetrovan@nwgsm.ru]A. Vetrov


The Basic Diagnostic Module in the Computeraided Training System With Adaptation Properties
The basic diagnosis module realizes the automation of diagnosis of the training subject residual knowledge level (TSRKL) by means of formed set of tests on different training subjects included in database. Testing TSRKL is an actual and difficult structured scientifictechnical task. It is realized by means of use of diagnostic complexes and program modules; it is reduced to presentation the preset sequence of questionanswer structures of various tasks of a test on a certain discipline on the basis of the parameter s set of a testing algorithm for direct identification and assessment of TSRKL reached. It is also realized on the basis of skills developed by examinees by means of practical use of diverse technical means of a different profile and appointment. Informationeducational environment, computeraided training system, diagnosis module, cognitive modeling technology, cognitive model, modified function of estimation, interval scale of estimation, informationeducational environment, computeraided training system, diagnosis module, cognitive modeling technology, cognitive model, modified function of estimation, interval scale of estimation.


Andrei Vladimirovich Zakharov, M.Akmullah Bashkir State Pedagogical University, Candidate of Physics and Mathematics; graduated from the Faculty of Natural Sciences of Ufa State Aviation Technical University; Associate Professor at Bashkir State University named after M. Akmulla; an author of articles and a monograph in the field of spatial data estimation. [email: andrewzakhar@mail.ru]A. Zakharov, Ruzana Razifovna Ramazanova, M.Akmullah Bashkir State Pedagogical University, graduated from the Institute of Professional Education and Information Technologies of Bashkir State University named after M.Akmulla; postgraduate student of Applied Informatics Department at the same university; an author of articles in the field of information systems control. [email: ramazanova.ruzana@mail.ru]R. Ramazanova


Automated Rating Control System
А system consisting of a set of typical subsystems is considered. Each subsystem has a rating score which influences on subsystem support. The control technique includes the following steps: 1. Selection of a set of characteristics of subsystems (as well as their distribution by groups). 2. Determination of the influence of each characteristic on the increase of the competitiveness of subsystems. 3. Setting the significance of each group for a current period. The control cycle consists of the following three steps: 1. Setting the initial method for calculating subsystems ratings. 2. Ratings calculation for the current period 3. Correction of the parameters of subsystems ratings calculations for the next period. System control automation can be implemented in two directions: 1. Data collection and calculation of the subsystems ratings. 2. Support of the decision concerning the control of the global system. Decision support system are considered and described in terms of automation control. It uses database of subsystems and consists of two levels. The lower level of decision support system is used for rating computing according to the proposed technique. The upper level consists of two modules: the module of analytics and the module of decision support. Theoretical estimations of the control system are calculated; they include estimations of the subsystem cases with equal and unequal effectiveness of coefficients and asymptotical estimation of a leader subsystem. Moreover, the authors provide a routine calculation of coefficients effectiveness for the university departments. System analysis, system rating control, decisionsupport system, rating system, system control estimation, asymptotical estimation of system behavior, control automation.


MATHEMATICAL MODELING
Konstantin Konstantinovich Vasiliev, Ulyanovsk State Technical University, Doctor of Engineering, Professor; Honored Worker in the science and engineering of Russian Federation; Correspondent Member of the Tatarstan Academy of Sciences; graduated from the Faculty of Radioengineering at Leningrad Institute of Electrical Engineering named after V. I. Ulyanov (Lenin); completed his postgraduate studies at the same Leningrad Institute; a head of the Department of Telecommunication at Ulyanovsk State Technical University; an author of monographs, textbooks, and articles in the field of statistical synthesis and analysis of information systems. [email: vkk@ulstu.ru]K. Vasiliev, Eduard Dmitrievich Pavlygin, Federal ResearchandProduction Center Joint Stock Company ‘ResearchandProduction Association ‘Mars’, Candidate of Engineering; graduated from the Faculty of Radioengineering at Ulyanovsk Polytechnic Institute; First Deputy Director General for Scientific Affairs at Federal ResearchandProduction Center Joint Stock Company ‘ResearchandProduction Association ‘Mars’; an author of articles in the field of statistical methods for signal processing. [email: mars@mv.ru]E. Pavlygin, Aleksandr Sergeevich Gutorov, Federal ResearchandProduction Center JointStock Company ‘ResearchandProduction Association ‘Mars’, graduated from the Faculty of Radioengineering at Ulyanovsk State Technical University; a postgraduate student of Ulyanovsk State Technical University, Chief Designer at Federal ResearchandProduction Center JointStock Company ‘ResearchandProduction Association ‘Mars’; an author of articles in the field of statistical methods of signal processing. [email: gutorov_as@mail.ru]l. Gutorov


Building Maneuvering Targets Trajectories on the Basis of Splines and Kalman Filters
The algorithms of tracking radar targets on the basis of Kalman filtering and smoothing splines allowing to estimate target motion parameters in the absence of accurate information about the dynamic model are considered. The comparative analysis of algorithms effectiveness for different types of trajectories was carried out. It’s well established that in case of intensive maneuvering and quite accurate initial measurements, the algorithms on the basis of splines (approximation of the curve with the use of spline functions) are subjects to a little uncertainty, simple to software implementation, moreover, they do not require a lot of computational resources. Simultaneously, preference should be given to Kalman methods (recursive functions estimating the state of the dynamic system) for smoothly varying trajectories with known statistical parameters. Under conditions of uncertainty relative to dynamic parameters of the target, manymodel multiversion procedures for trajectory construction are proposed. Experimental results were obtained on the basis of the radar situation simulation. The results allow to confirm working ability and the efficiency of algorithms and software developed. Radar, detection, distinction, estimation, filtering, spline, simulation.


Aleksandr Igorevich Ivashkin, Ulyanovsk State Technical University, Postgraduate Student; graduated from the Faculty of Machinebuilding of Ulyanovsk State Technical University; an author of articles in the field of processes modeling. [email: tpm@ulstu.ru]A. Ivashkin, Vladimir Kuzmich Manzhosov, Ulyanovsk State Technical University, Doctor of Engineering, Professor; graduated from the Faculty of Machinebuilding of Frunze Polytechnical Institute; Professor of the Department of Theoretical and Applied Mechanics and Building Constructions at Ulyanovsk State Technical University; an author of articles, monographs, inventions in the field of dynamics of machines, shock processes modeling. [email: v.manjosov@ulstu.ru]V. Manzhosov


Modelling of the Intense Deformed Condition of the Core of in Steps Cylindrical Form At Collision With the Rigid Barrier
The wave model of a longitudinal shock to a rigid barrier of a core in the graded cylindrical form is considered. The model of a core is presented by a set of the interfaced elements of a small length taking into account wave processes in each element, transformation of waves on borders of interface of elements, and unretentive communication in a shock section. The authors present the results of the modeling providing visualization of a shock. It reproduces the process of formation and distribution of waves of deformations changing in time in a shock system, charts of the intense deformed condition of a core system in any time point in the course of a shock on a monitor screen. Longitudinal shock, shock wave model, shock to a barrier, modeling, waves of deformations, distribution of waves of deformations.


Ekaterina Dmitrievna Nasonova, Balashov Institute (Branch) of National Research Saratov State University named after N.G. Chernyshevsky, Candidate of Physics and Mathematics; graduated from the Faculty of Physics and Mathematics of Balashov State Pedagogical Institute; Associate Professor at the Department of Physics and Information Technologies at Balashov Institute (Branch) of National Research Saratov State University named after N.G. Chernyshevsky; an author of articles in the field of operations research. [email: baratovaed@rambler.ru]E. Nasonova


Hierarchical Interaction Between the Two Coalitions in View of the Uncertain Factor on the Top Level
Complex systems usually have multilevel hierarchical structures characterized by the disparity of participants in the control process and exposed to different perturbations and other uncertain factors. In order to solve the problem of describing the operation of complex dynamic systems and decisionmaking under uncertainty, the methods of operations research including the game theory ones are used. A model of hierarchical interaction between two coalitions with program strategies under uncertainty with varying degrees of awareness is constructed in the paper. It is assumed that the low level players of the hierarchy know the implemented value of uncertainties, and this information is not available on the top level. The solution using the guaranteed result principle is defined. The original maximin problem to the related set is transformed to the problem on maximum of functional with penalty. The existence theorem for solution is proved, an estimate of the error and necessary conditions of optimality are obtained. Hierarchical game, coalition, uncertainty, penalty function technique.


Sergei Pavlovich Bezglasnyi, Candidate of Physics and Mathematics, Associate Professor at the Department of
Theoretical Mechanics of Samara State Aerospace University named after Academician S.P. Korolev (National Research
University); graduated from the Faculty of Mechanics and Mathematics of Lomonosov Moscow State University; an
author of articles in the field of theoretical mechanics, theory of stability and control, dynamics of space systems., [email: bezglasnsp@rambler.ru]S. Bezglasnyi, Alena Alikovna Mukhametzyanova, Aeronautical Engineering Institute at Samara State Aerospace University named after Academician S.P. Korolev, Postgraduate Student at the Department of Theoretical Mechanics of Aeronautical Engineering Institute at Samara State Aerospace University named after Academician S.P. Korolev; graduated from the Faculty of Aircrafts of Samara State Aerospace University named after Academician S.P. Korolev; an author of articles in the field of theoretical mechanics, theory of stability and control. [email: alain.20@mail.ru]A. Mukhametzyanova


Gravitational Stabilization and Reorientation of a Dumbbell Satellite in a Circular Orbit Due to the Swing Principle
A dumbsell satellite plane motion along the circular orbit is considered in the article. The motion is modeled by a weight rod with two masses fixed on the rod’s ends. A third mass can move along the rod. The control is realized by the law of moving seismic mass along the rod. The new bounded control laws solving the tasks of gravitational stability in relation to the satellite balancing state radial location flat rebellions and the tasks of dyametrical reorientation on orbit are obtained due to the swing principle. The problem is solved on the basis of the second method of the classical instability theory; the corresponding Lyapunov functions are plotted. The theoretical results are illustrated by the graphical representation of the system motion numerical simulation. Dumbbell satellite, seismicmass, gravitational torque, lyapunov function, asymptotic stability.


COMPUTERAIDED ENGINEERING
Pavel Iurievich Pavlov, Ulyanovsk Instrument Manufacturing Design Bureau (UIMDB) JointStock Company, Postgraduate Student at Ulyanovsk State Technical University; graduated from the Faculty of Aircraft Construction of the Institute of Aviation Technologies and Managements at Ulyanovsk State Technical University; Design Engineer of Ulyanovsk Instrument Manufacturing Design Bureau (UIMDB) JointStock Company; an author of articles in the field of manufacturing problems and classifiers. [email: pavel.y.pavlov@mail.ru]P. Pavlov, Petr Ivanovich Sosnin, Ulyanovsk State Technical University, Honored Worker of the Higher School of the Russian Federation, Doctor of Engineering, Professor; graduated from the Radioengineering Faculty of Ulyanovsk Polytechnic Institute; Head of the Department of Computer Science at Ulyanovsk State Technical University; an author of numerous works in the field of conceptual design of computeraided systems. [email: sosnin@ulstu.ru]P. Sosnin


Conceptual Algorithmic Programming and Modeling in the Design and Manufacture of Aircrafts Piping Systems
One of the important criteria of a competitiveness of an aviation industry is the cycle time of a production preparation and manufacturing. This criterion is integrally evaluated under conditions of a multiproduct manufacturing when parts and assemblies of various functional purposes may have complex shapes and high demands on quality. A significant contribution to the integral evaluation makes the preparation of production and manufacturing the pipeline systems of the aircraft. The article analyzes the life cycle of the aircraft piping systems at the stage of the technological preparation of production and manufacturing, revealed its shortcomings and features. Among the shortcomings, the authors highlight the long duration and high cost of correcting the errors committed engineering services at the stage of the technological preparation of production (TPP). In order to eliminate these shortcomings, the authors suggest the use of conceptual and algorithmic programming and modeling the activities of engineers to reduce the number of errors that occur due to the human factor at the stage of the TTP, as well as for accumulating and utilizing the experience, the use of which prevents errors. The authors have developed the way of working based on using a system of accumulating the experience at the stage of creating the technological process (TP) and the technical statement (TS) for the technological equipment (TE). The presented study also describes an example of the developing the TS for the design of the TE and an example of the formation of the TS for the development of numerical control programs with the use of the toolkit WIQA. Words: aircrafts piping systems, engineering personal, fitting, technological templates, welding.


ELECTRICAL ENGINEERING AND ELECTRONICS
Gennadii Nikolaevich Abramov, Togliatti State University, Doctor of Engineering, Professor at the Department of Industrial Electronics at Togliatti State University; Honored Worker of Higher Professional Education of the Russian Federation; an author of articles and patents in the field of analogtodigital and digitaltoanalog conversion of monopulse electrical signals (MIES). [email: yuran_a@mail.ru]G. Abramov, Iurii Gennadievich Abramov, Labyrinth Volga, LLC, got the Master’s Degree in Engineering and Technology with specialty in Electronic Devices and Equipment; graduated from Togliatti State University; a system administrator at Labyrinth Volga, LLC; an author of scientific publications and patents in the field of analogtodigital conversion of MIES parameters. [email: yuran_a@mail.ru]I. Abramov


Improving Quality of Time Parameters of Vernierpulse Timedigital Converters
Vernier  pulse timedigital converters (TDC) are used for the conversion of time intervals into the code subnanosecond resolution in many areas of science and technology. Disadvantages include low speed and large dead time of conversion, which are defined directly by the vernier  pulse method behind the basis of their work and the need of the total digital conversion result calculation. Therefore, improving the performance and reducing the dead time of vernier  pulse TDC while maintaining their resolution that can significantly extend the possibility of using TDC data in the problems of time intervals transformation become urgent tasks. The article deals with a method for improving twice the time parameters (decrease in conversion time and, accordingly, the conversion dead time) of vernierpulse TDC by increasing the period following the pulsecounting sequence of the discrete transformation. Replacing the process of calculating the overall digital result of the conversion in the arithmetic logic unit (ALU) to the logical operation of summation result of the digital conversion with twice the value of the digital result just provides a further reduction of the additional value of the dead time conversion. However, the exclusion of the ALU from the conversion process reduces the additional hardware expenses of vernierpulse TDC and simplifies the process of determining the conversion result. The possibility of determining the overall digital result of the conversion in the same way and in the vernierpulse TDC executed without increasing the period of starting pulsecounting sequence at the discrete transformation is shown. The method suggested is recommended for halving the time of transformation and reducing the dead time vernierpulse TDC double interpolation more than twice, for example, in the universal time slot counter NR5370L manufactured by Hewlett Packard. Shock generator excitation recycle generator, transformation discretization, timedigital converter, time interval, starting pulse, stopping pulse, pulsecounting sequence.


Viacheslav Andreevich Sergeev, Ulyanovsk Branch of Kotel’nikov Institute of Radioengineering and Electronics (IRE) of RAS, Doctor of Engineering, Associate Professor; graduated from the Faculty of Physics of Gorky State Technical University; Head of Ulyanovsk Branch of Kotel’nikov Institute of Radioengineering and Electronics (IRE) of RAS; Head of the Department of Radioengineering, Opto and Nanolectronics of Ulyanovsk State Technical University at Ulyanovsk Branch of Kotel’nikov IRE of the Russian Academy of Sciences; an author of monographs, inventions, and articles in the field of researching and simulating semiconductor devices and integrated circuits performance, and measuring their thermal characteristics. [email: sva@ulstu.ru]V. Sergeev, Iaroslav Gennadievich Tetenkin, Ulyanovsk Branch of Kotel’nikov Institute of Radioengineering and Electronics (IRE) of RAS, graduated from the Faculty of Radioengineering of Ulyanovsk State Technical University; Lead Engineer of Ulyanovsk Branch of Kotel’nikov Institute of Radioengineering and Electronics (IRE) of RAS; an author of scientific publications and inventions in the field of computeraided measurement and parameter analysis of semiconductor devices and integrated circuits and measuring their thermal characteristics. [email: ufire@mv.ru]I. Tetenkin


An Algorithm for Determining the Thermal Parameters of Digital Integrated Circuits for Transient Thermal Characteristics
A brief analysis of linear thermal models of semiconductor devices (SD) and algorithms for determining the parameters of the thermal equivalent circuit for transient thermal characteristics (TTC) have been described. The complexity of the implementation of the algorithm for determining the thermal parameters of the SD using the method of structural functions according to the JESD5114 standard has been mentioned. The original method of measurement of the digital integrated circuits (DIC) TTC using the frequency variation measurement of the DIC ring generator is described. The possibility of implementing of the method using the improved measurement system for the analysis of the DIC thermal parameters is shown. The simple algorithm of calculation of the SD thermal parameters using the zero points of the TTC second derivative is offered. This algorithm for calculating the DIC thermal parameters was tested with the use of CD4011 TTC, which was measured with an improved measurement system. The possibility of the algorithm automation is discussed. Semiconductor devices, thermal equivalent schemes, thermal parameters, transitional thermal characteristics, digital integrated circuits, measurement, algorithm of calculation.


