PNRPU Bulletin. Electrotechnics, Informational Technologies, Control Systems

Self-timed digital circuits (STC, aperiodic circuit, speed independent, delay insensitive, circuits insensetive to delays in gates and wires) as one option among digital circuits with synchronous and asynchronous, in recent years, experiencing a certain rise. This is due to the great potential of their work on the ultra-supply voltage, which is in "trend" technologies "Green computing". In Russia, this direction is actively developed by the research team at the Institute of Informatics Problems of the Russian Academy of Sciences ( FRC IC RSA) with which the authors are joint research. A library of design elements for self-timed semicustom chips based gate array (GA). The article analyzes Muller element retaining the completion of the transition process in the self-timed circuits, working on the actual delay elements. Self-timed circuits are considered as one of the most promising options for energy-saving "green" computing, with work on the ultra-low supply voltages and the ability to fix the constant failures. However, this ability allows to build an active failsafe circuit, with this requires an additional control hardware maximum time of completion of the transition process to localize the site of failure and the corresponding reconfiguration (switching to the second channel), which may require a relatively long time. For the implementation of passive failover free of these shortcomings need triple redundancy. At the same time there is a problem completing the analysis of the transition process in the structure with a triple redundancy. It proposed and studied Muller element for redundant structures, retaining the completion of the transition process in at least one of the two channels. The article is devoted to the attempt to develop and study a specific trigger hysteresis operating in redundant STC. Receives and analyzes the implementation of logic functions Muller element.

The work includes the comparison of well-known and widely used up-to-day approaches and methods of enhanced oil recovery in the extraction process of highly viscous components of the petroleum from underground storage fields. Analysis revealed that these approaches and methods as well as the most of the used extraction technologies of highly viscous oil products from enclosed storage, economically unprofitable. Comparative analysis of the well-known methods in the world show that the most effective technologies of enhanced oil recovery in the extraction process of highly viscous components of the petroleum from storage are «VAPEX», «SAGD» («JAGD») and microwave heating method. The results of our analysis and simulation show that the technology SAGD is inefficiency. The irrational structure of the circuit structural solutions (low position of the bottom production well) lead to a low oil saturation and a high degree of stratification of heterogeneous structure in underground storage. The using of microwave heating method shows high efficiency, due to a positive net present value, and the high rate of oil recovery in various versions, including the combination with other technologies. This suggests the prospects of technology of microwave exposure on the oil of high viscosity and the relevance of the additional research to determine regularities and features of the spatial effect on the viscosity of the oil.

With the development of information technology business games, also known as simulated business games, becoming one of the main tools of the learning process in the business. The games business is very important to create a scenario in which the solutions are comparable with those conditions, which players will encounter in real life. This type of training will not only help to train new employees to certain competencies, but will improve your skills as an experienced employee. The authors propose an approach to the construction of new educational environments, is to develop design, technical, organizational, methodological tools of the active implementation of methods of formation of competence - competency of business games. The research considers the business game design subsystem of Competence-based Business Game Studio source environment. The key distinctive features of Competence-based Business Game Studio are domain independence and ability to base upon business-processes described in a certain notation. The design subsystem has to include software tools to convert unformalized and loosely formalized business processes description and competences required for model design to highly formalized models developed with the use of software and hardware suite. Such kind of tools is represented by interactive visual editor, which is being designed in the course of this work. The editor enables resource model development and allows to connect each business-process operation with relevant resource set.

During the analyzed activity of coffee "Coffee Black", which is part of Izhevsk restaurant chain catering "Food Service". It identified a number of problems related to timely delivery, processing and transportation of billet products between warehouses restaurant. They also identified key performance criteria studied coffee. On the basis of identified criteria, and based on an earlier analysis of warehouse space and personnel operating them, developed a model business processes coffee, containing the material and information flows, as well as the main elements showing trade flow coffee shop "Coffee Black". Further, based on the model created by business processes and to study its subject area with the processes occurring in it, it has been developed and ER- UML-system model. Designed ER-model of the system helped identify the basic structure of the modules developed an automated warehouse management system. As a UML-model is the use case diagram, which is a sequence of transactions performed by the system in response to an event triggered by some actor. In developing the model identified actions designed system and potential candidates for the role of attributes and nature of the system, further more detailed. The data and developed models will be used to create automated control system of storage facilities on the example of the coffee shop "Coffee Black", which in turn will increase the capacity of the warehouse, space saving storage space and improving the quality of service study coffee.

The analysis of monitoring of operation of driving electric motors of electric drive gas-distributing units is given in compressor stations of the main transport of gas. The statistics of operation of synchronous STD cars at compressor stations of PJSC Gazprom for the last 30 years is presented. The facts of decrease in a resource and technical condition with the analysis of safety of functioning of driving turbocompressors on objects are elicited. It is proved that the prime cause of refusals of EGPA are 4 operational factors which are generally influencing on reliability of isolation the stator of windings of high-voltage electric motors. Regular and new hardware of expeditious monitoring of technical condition and forecasting of trouble-free operation of synchronous motors are presented. They are based on prospects of use of intelligent sensors with neuro and indistinct algorithms of forecasting of a condition of cars. The sequence of development stages of the built-in systems of expeditious monitoring of isolation of synchronous cars of a megawatt class with methods of receiving algorithmic and ON systems is offered. Models, columns and algorithms of realization of indistinct implication of monitoring of cars are received. Results of practical realization of systems of diagnostics at compressor stations of PJSC Gazprom which allow to predict quickly and authentically approach of emergency situations are presented and to reduce simple STD in repairs by 3-4 times. It is shown that introduction of new modern monitors of technical condition of units and the forecast of their resource at compressor stations allows to cut considerably operational costs and to increase safety and fail-safety of work in the regular modes, and also to carry out transition to maintenance and repair on an actual state of electric drives of gas-distributing units.