PNRPU Bulletin. Electrotechnics, Informational Technologies, Control Systems

Features of modern water turnover cooling systems of processing equipment on industrial enterprises are considered. Statistical data on use of industrial turnover water in various industries and requirements to its temperature and levels of pollution according to the state standard rates are offered. The technical indicators of direct-flow and turnover systems proving indisputable benefits of the last on power consumption, profitability and lack of impact on environment are compared. Modern indicators of heat technical processes of chilling of water are given in water turnover systems with various types of coolers. The factors influencing an energy efficiency, reliability and ecological compatibility of work of water turnover systems with tower coolers are analyzed. Results of development and projects implementation of complex automation of electric drives of water turnover system of various entities with strict requirements on stabilization of temperature of chilled water are provided. The methodology of the analysis and synthesis of control algorithms of electric drives of fans in case of the stochastic indignations of technological and meteorological nature operating on turnover systems with coolers is offered. It is proved that the greatest impact on process of chilling is exerted by factors of difference of water temperatures, temperature and humidity of air, and also giving of pumps. Results of the regression analysis, modeling and implementation of systems of automatic control of water turnover chilling with tower coolers are received. One of examples of sale of the developed automated systems is given in the mining industry with the detailed description of the function chart of water recirculation using the principle of expert system. The algorithm of the software which realizes work of the compensating invariant regulation and the expert system providing monitoring and the forecast of defects for laws of neuro-fuzzy logic is provided. The real type of the managing interface of the program is given.

The logic of field programmable gate arrays (FPGAs), referred to in Russian programmable logic integrated circuits - PLIC type FPGA (Field-Programmable Gate Array) programmable multiplexers based on realizing one-bit memory. Such storage devices are actually RAM, documentation firms - producers called LUT (Look Up Table), it makes sense to truth table. When configuring the FPGA LUT recorded truth table the necessary logic function, which for each input vector indicates the value of the logic function. The most commonly used variables LUT 4, 4LUT, respectively, the necessary amount of configuration memory - 16 bits. LUT is a tree of transistors, one of 16 branches which enabled the corresponding input set. Sources indicate that a number of variables is optimal for the realization of combinational and sequential state machines. Since the beginning of zero years manufacturers, in particular firm Altera began to announce the LUT to a greater number of variables, in particular, referred to 5LUT, 6LUT even 7LUT and 8LUT. At the same time it states that this improvement can increase the efficiency of implementing logic functions. However, it is known that according to the rules Mead and Conway is not permissible to connect more than four transistors in a serial transmission chain. Of interest are complex LUT, called adaptive logic modules ALM, since they can implement multiple logical functions of different custom-numbers of variables. These ALM are in the Stratix III FPGA firm Altera. Analyzes describe the Stratix III FPGA and inaccurate descriptions installed in the Russian-language sources. It is established that ALM contains besides the two mentioned 4LUT four more additional 3LUT, which ensures the implementation of two 4LUT and, accordingly, the selection of one of four 4LUT-that is just 6LUT. Thus, the implementation of a function of two variables using the composition of trees 4LUT 3LUT, which ensures compliance with the rules Mead and Conway.

Use of intelligent control systems in various fields of science and technology facilitates of reproduction of natural intellect. The artificial intelligence is the development of hardware and software for imitation of natural intelligence where it is expedient to use the methods which are specially focused on creation of the models considering incompleteness and inaccuracy of basic data. In this article the physical model of Segway, representing unstable pendulum system on the mobile basis which purpose was creation and research of the fuzzy adaptive controller supporting Segway in an equilibrium state is considered. The mathematical description of the physical model is obtained with the help of Lagrange equations. The problem of stabilization at various influences on an unstable system, for example, adding more weight to the platform, hold it vertically, is considered. Sensor of deviations in Segway is module three-axis gyroscope and accelerometer 10 DOF IMU Sensor, which communicates with the microcontroller via the I2C bus. "Raw" data comes to the controller Arduino Leonardo for I2C bus, where they are processed and three-wire interface provided to the driver Motor Shield L298P for electric motors. There is enough speed of an exchange for request of data from the module and balancing with a platform. Speed control is supplied in the form of a PWM signal to the two electric motors with a differential engine for testing the deviation from the vertical. To prove the problem being solved physical model of Segway with an integrated fuzzy adaptive controller in Arduino Leonardo is implemented.

Analysis of existing challenges in heat supply systems of the cities showed that the most of them appear due to spontaneity of the heat supply systems development, due to almost complete absence of updated data of the process data sheets, and due to absence of аn unified recording system for defects and regular maintenance. One of the key solutions of the objective for enhanced efficiency of a city heat supply system management is the development of a unified heat supply scheme based on up-to-date information-and-analysis systems, for example, based on software application of information graphics system 'CityCom-TeploGraph'.Our article represents some results of the development of on-line heat supply system for the town of Dobryanka, Permkiy Krai, Russia, which could be used as an example for other cities. A computerized simulation of the processes in the heat supply system of a city allows to estimate parameters of the current operation at the maximum possible accuracy, to calculate reliability, to investigate various options for future potential development of the system and within shortest timeframe to determine efficiently optimum solutions of heat supply of consumers in emergency situations which is extremely vital question in cases of low negative temperatures of the ambient air in the Ural region of Russia and in other parts of the world. The ability to simulate different hydraulic regimes in the IGS "CityCom" allowed in the development of prospective district heating schemes to find the best in quality and value implement a solution. Implementation of the recommended measures have reduced the unit cost of heat and allowed to fully provide thermal energy for the most remote consumers without increasing the performance of heat source.

The actual problem of detection and localization of the malicious information which is in corporate networks in big information massifs is formulated. Basic data for formation of the necessary list of ways and means of information protection are defined. The characteristic of SIEM systems as one of modern approaches in the solution of tasks of information security of corporate networks is provided. The main objectives solved on the basis of introduction and operation of SIEM system and also standard functionality at identification of events and incidents of information security are listed. The typical structure at introduction of the main components of SIEM system is given and specification of functional levels of work of system. Conditions for creation of effective system of information security on the basis of implementation of SIEM system are formulated. The structurally functional model of SIEM system is developed. The structure of the main hardware resources of information system sufficient for ensuring effective work of SIEM system is determined and calculated. The description of settings of system, and procedure of writing of rules as sequence of necessary actions is provided. The scheme of algorithm writing of rules is developed. Stages of writing of the rule are listed. The stage of writing the rule on the example of detection of TCP, ICMP, UDP connections from the subgroups which don't have the right of Internet connection is considered. An inspection of operability of regular expression is for this purpose carried out. It is created rules in the QRadar editor and for this rule and necessary rules of operation of SIEM system are chosen. Setting up rules by means of control properties of the incident generated at operation of the rule is carried out. Necessary conclusions are drawn.