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Articles 1 - 30 of 109
Full-Text Articles in Engineering
Optimization Of The Process Of Functioning Of Multiservice Networks ., A.R Marakhimov, G.B Sherboboyeva
Optimization Of The Process Of Functioning Of Multiservice Networks ., A.R Marakhimov, G.B Sherboboyeva
Chemical Technology, Control and Management
In order to optimize the delay time of information flows in the nodes, multiservice networks propose the application of the theory of fuzzy sets, with the help of which models are developed for calculating the delay time, taking into account the inaccuracy of time, simple, correct operation and aging of information. A fuzzy model for calculating the average message delay time through communication nodes in multiservice networks is given, with each channel of switching nodes being modeled as a queuing network. A single-criterion problem of the optimal distribution of information flows over the channels of switching nodes with ill-defined data …
Synthesis Of 2,5-Dimethylhexine-3-Diol-2.5 By A Heterogeneous Catalytic Method And Its Some Physical And Chemical Properties ., A.T Umrzokov, B.F Muhiddinov, H.M Vopoev, S.E Nurmonov
Synthesis Of 2,5-Dimethylhexine-3-Diol-2.5 By A Heterogeneous Catalytic Method And Its Some Physical And Chemical Properties ., A.T Umrzokov, B.F Muhiddinov, H.M Vopoev, S.E Nurmonov
Chemical Technology, Control and Management
The article examines the processes of heterogeneous-catalytic interaction of acetylene and acetone with the formation of 2,5-dimethylhexin-3-diol-2,5 using copper-bismuth-nickel-kaolin (MVNK) and copper-bismuth-nickel-bentonite (MVNB) catalysts physicochemical constants were determined depending on their nature, content and temperature of the reactions. Quantum-chemical calculations were carried out and the reaction centers of the molecules were shown on their basis.
The Method Of Transforming The Liquidated Oil And Gas Production Wells Into Technological Wells For Leaching Salts From Saline Deposits Such As Brine ., O.M Nabiev, T.Z Xaydarov, Sh.T Nabiev
The Method Of Transforming The Liquidated Oil And Gas Production Wells Into Technological Wells For Leaching Salts From Saline Deposits Such As Brine ., O.M Nabiev, T.Z Xaydarov, Sh.T Nabiev
Chemical Technology, Control and Management
The article reveals the essence of the invention, i.e. transformation of abandoned wells into technological wells by leaching sylvinite. The production of potassium fertilizers using the gallium method, reduces the technological cycle, capital investments, operating costs, energy and heat costs, and increases the return on assets of wells.
Estimation Of The Covariation Matrix Of Disturbances At The Entrance Of The Controlled Object On The Basis Of Iterative Algorithms ., O.O Zaripov, O.P Shukurova
Estimation Of The Covariation Matrix Of Disturbances At The Entrance Of The Controlled Object On The Basis Of Iterative Algorithms ., O.O Zaripov, O.P Shukurova
Chemical Technology, Control and Management
The problems of formation and construction of stable algorithms for estimating the covariance matrices of input disturbances of the control object based on the methods of successive approximations are considered. Algorithms for the stable estimation of covariance matrices of perturbations at the input of an object are presented based on the concepts of iterative algorithms. The regular algorithms given above make it possible to produce a stable estimation of the covariance matrix of the object noise based on the concepts of the synthesis of adaptive filters and thereby increase the accuracy of the adaptive estimation procedure.
Integrated Intelligent Systems For Industrial Automation: The Challenges Of Industry 4.0, Information Granulation And Understanding Agents ., N.R Yusupbekov, V.B Tarassov
Integrated Intelligent Systems For Industrial Automation: The Challenges Of Industry 4.0, Information Granulation And Understanding Agents ., N.R Yusupbekov, V.B Tarassov
Chemical Technology, Control and Management
The objective of the paper consists in considering the challenges of new automation paradigm Industry 4.0 and reviewing the-state-of-the-art in the field of its enabling information and communication technologies, including Cyberphysical Systems, Cloud Computing, Internet of Things and Big Data. Some ways of multi-dimensional, multi-faceted industrial Big Data representation and analysis are suggested. The fundamentals of Big Data processing with using Granular Computing techniques have been developed. The problem of constructing special cognitive tools to build artificial understanding agents for Integrated Intelligent Enterprises has been faced.
Liquid Suspended Fertilizers On Base Wet-Processing Phosphoric Acid Of Kyzylkum ., Sh.Yu Nomozov, U.K Alimov, Sh.S Namazov, A.R Seytnazarov
Liquid Suspended Fertilizers On Base Wet-Processing Phosphoric Acid Of Kyzylkum ., Sh.Yu Nomozov, U.K Alimov, Sh.S Namazov, A.R Seytnazarov
Chemical Technology, Control and Management
There have been determined the composition of liquid complex fertilizers based on low concentrated wet-processing phosphoric acid from washed and calcinated phosphoconcentrated of Kyzylkum. The density and viscosity of the liquid fertilizers were studied at wide temperatures (30-80оС). It was given the list of chemical compounds generated at ammonization of wet-processing phosphoric acid with various impurities. In order to reduce precipitation of residues during the neutralization 26% aqua suspension of bentonite was used as suspendered agent in amount of 1 to 3%. Rheological properties of the nitrogen-phosphate solution show that they are in liquid condition.
The Task Of Stabilizing Drying With The Help Of Accumulation Material In Case Of Overheating Of The Chamber Under The Action Of Sunlight ., K.T Norkulova, M.M Mamatkulov, B.M Jumaev
The Task Of Stabilizing Drying With The Help Of Accumulation Material In Case Of Overheating Of The Chamber Under The Action Of Sunlight ., K.T Norkulova, M.M Mamatkulov, B.M Jumaev
Chemical Technology, Control and Management
The article deals with the possibilities of temperature stabilization inside the drying chamber with the help of materials having corresponding melting temperatures. The problem of the melting of accumulating material under the action of solar rays is investigated analytically. A precise and approximate solution of the problem of the propagation velocity of the melting boundary is presented. The application of the similarity method for solving the problem of the melting of a paraffin layer is shown. A reduced equation is obtained, which makes it possible to obtain numerical and graphical solutions. Particular cases of the solution of problems on the …
Application Of Properties Of Ion Exchange Resing In Sorption Process Of Gold Exstraction ., T.V Ponamaryova, P.I Kushnazarov
Application Of Properties Of Ion Exchange Resing In Sorption Process Of Gold Exstraction ., T.V Ponamaryova, P.I Kushnazarov
Chemical Technology, Control and Management
The application of ion-exchange resins in the sorption process of gold recovery is considered. Presented are: scheme of technological process of synthesis of effective ion exchanger of phospholized gossypol resin; regime of technology for obtaining ion exchanger; technical characteristics of the FGS ionite on the basis of the gossypol resin of the fat and oil industry TSh 86-38: 2006. As a result of the studies carried out during the synthesis, an effective ion exchanger ion is obtained for the extraction of precious metal ions.
Automated Fire Safety System At The Cotton Gin Industry ., Sh.Z Kamalov, N.Z Kamalov
Automated Fire Safety System At The Cotton Gin Industry ., Sh.Z Kamalov, N.Z Kamalov
Chemical Technology, Control and Management
The issues of automating the safety of machines and mechanisms involved in the process of primary processing of raw cotton are considered on the example of the process of pneumatic transport of cotton materials. The proposed automated system for ensuring fire safety of cotton materials moving in pneumatic lines, providing automatic detection of burning cotton materials and preventing their wide distribution.
Two-Level Fuzzy Adaptive Regulation Of Dynamic Objects ., I.Kh Sidikov, B.U Shomirzaev
Two-Level Fuzzy Adaptive Regulation Of Dynamic Objects ., I.Kh Sidikov, B.U Shomirzaev
Chemical Technology, Control and Management
The questions of constructing and tuning adaptive fuzzy PID-controllers that are widely used in automatic control systems of technological processes in various industries are considered. The method of fuzzy adaption of regulator settings, taking into account the nonlinear properties of the object, is proposed. The optimal values of the PID controller parameters and fuzzy adaptation factor coefficients are determined, which ensure the required quality of the transient process in a closed system with a fuzzy adaptive regulator
A Two - Integrated System Of Slaveed Control Of The Speed Of Adjustable Multiple Motoring Electric Drive Water- Removable Pump Installatio ., M.M Xamudxanov
A Two - Integrated System Of Slaveed Control Of The Speed Of Adjustable Multiple Motoring Electric Drive Water- Removable Pump Installatio ., M.M Xamudxanov
Chemical Technology, Control and Management
The article discusses the automatic control system of an adjustable multi-motor electric drive with an electrical connection through a rotor circuit of asynchronous motors with phase rotors and a common inverter driven by a network to provide control of the water supply process of pumping units as part of a water-lifting pumping unit. The system "multi-motor electric drive - pumps - hydraulic pressure net" was developed, equations describing the dynamics of the system were obtained, and the transfer functions of its main elements were determined.
Optimization Of Data Processing Based On Accounting For Factors Of External Expenses, Regulation And Correction Of Variables ., I.I Jumanov, S.M Xolmonov
Optimization Of Data Processing Based On Accounting For Factors Of External Expenses, Regulation And Correction Of Variables ., I.I Jumanov, S.M Xolmonov
Chemical Technology, Control and Management
Methods and simplified computational schemes for optimizing data processing for systems operating in conditions of limited a priori information, changes in the characteristics of external influences, uncertainty of parameters have been developed. To describe a non-stationary object, non-linear identification models are considered, constraints, input conditions for obtaining possible values of output variables are defined. An approach aimed at using identification technologies based on generalization of capabilities of dynamic models, neural networks (NN), mechanisms for regulating variable computing schemes of structural network components, as well as learning algorithms of the NN is proposed. A generalized algorithm for learning NN based on …
Fuzzy-Multiple Tasks Of Multicriterial Optimization In Risk Conditions ., T.F Bekmuratov, D.T Mukhamedieva
Fuzzy-Multiple Tasks Of Multicriterial Optimization In Risk Conditions ., T.F Bekmuratov, D.T Mukhamedieva
Chemical Technology, Control and Management
Approaches to solving the optimization problem and solving a fuzzy multicriteria optimization problem under risk conditions are considered. To assess risks in fuzzy conditions, it is proposed to supplement the system of constraints of a standard decision-making task with a set of restrictions on possible losses, namely, for selected scenarios, to build a model of their consequences (damages) as functions of control parameters and impose expert limitations on an acceptable level of relative damage for each scenario.
Installation And Methodology For Determining Of Antifrictional Properties Of Antistatic-Heat-Conducting Composite Polymeric Materials Interacting With Fibrous Mass (Cotton-Raw), S.S. Negmatov, N.S. Abed, G. Gulyamov, O.H. Eshkabilov
Installation And Methodology For Determining Of Antifrictional Properties Of Antistatic-Heat-Conducting Composite Polymeric Materials Interacting With Fibrous Mass (Cotton-Raw), S.S. Negmatov, N.S. Abed, G. Gulyamov, O.H. Eshkabilov
Technical science and innovation
The paper Presents a disk tribometer installation and allows to determine the antifriction properties of machine-building composite antistatic-heat-conducting polymer materials working in interaction with the fibrous mass (raw cotton). A method for determining the friction force, temperature and electrostatic charge values arising in the friction zone is developed. The friction of the fibrous material is carried out on the flat surface of the rotating disk sample from the material under study at specified clamping pressures and sliding speeds. Values of friction forces, temperatures and values of electrostatic charges of the tested sample in a zone of friction with cotton-raw are …
Fuzzy Task Of Rational Distribution Resources Of Dynamic Programming., O.M Ismailov, M.M Fozilova
Fuzzy Task Of Rational Distribution Resources Of Dynamic Programming., O.M Ismailov, M.M Fozilova
Chemical Technology, Control and Management
The article considers one of the management tasks - resource allocation for indistinctly given initial information, which is both theoretical and practical interest.
Equations And Transfer Functions Of Main Elements Of A Multi-Motorized Automated Electric Drive Of Pumping Unit., M.M Khamudkhanov, Sh.B Umarov
Equations And Transfer Functions Of Main Elements Of A Multi-Motorized Automated Electric Drive Of Pumping Unit., M.M Khamudkhanov, Sh.B Umarov
Chemical Technology, Control and Management
In this very article the principle of building an energy-sufficient multi-engine automated drive of water-lifting pumping unit is suggested, its main electromechanical ratios are given and equations are obtained that define the dynamics of the system and main elements were put into transfer functions.
Modeling And Research Of Circuitsof Intelligent Sensors And Measurement Systemswith Distributed Parameters And Values., I. Siddikov, Kh. Sattarov, H. Khujamatov
Modeling And Research Of Circuitsof Intelligent Sensors And Measurement Systemswith Distributed Parameters And Values., I. Siddikov, Kh. Sattarov, H. Khujamatov
Chemical Technology, Control and Management
transforming circuits of intelligence transducer, current sensors - transducers, research input and output signals of intelligent sensors and measurement systems
Multi-Criterial Optimization Of Information Granules In Fuzzy If-Then Rules., R.A Aliev, O.H Huseynov, Nigar E. Adilova
Multi-Criterial Optimization Of Information Granules In Fuzzy If-Then Rules., R.A Aliev, O.H Huseynov, Nigar E. Adilova
Chemical Technology, Control and Management
Investigation of trade-off between characteristics of information granules for construction of fuzzy rule-based model is challenging scientific problem. Main optimization requirement in information granules estimation (antecedent and consequent parts of fuzzy rules) are cardinality which characterizes justifiability (reliability) of information granules in light of the available experimental data and specificity that characterizes semantics of information granules. This paper is devoted to a multi-criterial approach to solving of optimization problem of construction of interval and fuzzy information granules. Validity of the proposed approach is proved by numerical examples.
The System Of Full-Scale Modelling Of Movable Object With An Operator In The Control Loop., A.F Verlan, V.A Fedorchuk
The System Of Full-Scale Modelling Of Movable Object With An Operator In The Control Loop., A.F Verlan, V.A Fedorchuk
Chemical Technology, Control and Management
The principles of organization of a full-scale modelling of a moving object with an operator in its control loop are considered in the article. The task of reproducing the required dynamic characteristics, which the simulated moving object possesses, is solved by correcting the control signals for a moving object with similar dynamic properties. The developed method, for example, can be used to simulate the dynamic characteristics of the aircraft by another aircraft provided with a unit of adjustment of control.
Sustainable Estimation Of Parameters And Covariation Of Disturbance Vectors In Uncertain Systems., H.Z Igamberdiyev, U.F Mamirov
Sustainable Estimation Of Parameters And Covariation Of Disturbance Vectors In Uncertain Systems., H.Z Igamberdiyev, U.F Mamirov
Chemical Technology, Control and Management
Algorithms for the formation of a procedure for the stable estimation of parameters matrices and covariances of perturbation vectors in indefinite dynamic systems based on the concepts of matrix pseudo-inversion are given. For stable pseudo-inversion, the matrix partitioning method is used using simplified regularization. The above algorithms allow for a stable estimation of the matrix of parameters and covariances of the perturbation vectors in dynamic systems and thereby increase the accuracy of adaptive control systems operating in parametric and signal uncertainty conditions.
Cloud System Of Pilot Production Management Based On Internet Of Things., Michail V. Ovsiannikov, Serguey A. Podkopaev, Valery B. Tarassov
Cloud System Of Pilot Production Management Based On Internet Of Things., Michail V. Ovsiannikov, Serguey A. Podkopaev, Valery B. Tarassov
Chemical Technology, Control and Management
Some theoretical background of Industrial Internet and Cloud Computing opening new era in industrial automation is considered. A prototype of cloud system for IoT-enabled production management is presented. Its first version is based on Denford’s equipment for manufacturing education and SAP HANA Cloud Platform. Main functions of cloud production management system are discussed. An architecture of «Denford-BMSTU» CIM system is shown. Basic components of SAP HCP are analyzed to clarify its implementation. Communication protocols between CIM devices and cloud platform are noticed. Examples of dispatching production rules are given.
The System Individualized Principles Of Management Of Technologies Of Field Husbandry., V.A Korolev, A.M Bashilov, Z.O Eshmuradov
The System Individualized Principles Of Management Of Technologies Of Field Husbandry., V.A Korolev, A.M Bashilov, Z.O Eshmuradov
Chemical Technology, Control and Management
The system and organized, local individualized agrotechnologies provide on the land ground divided into priority zones, the simultaneous parallel and interconnected performance of a complex of technological operations on production of crop production: operations on preparation of seeds of an agriculture, cultivation of seedling, laying of seedling to the soil, to cultivation of an agriculture, stimulation of her development. Interaction between the carried-out processes is carried out in real time with a possibility of necessary corrections of processes during their performance. A considerable part of technological operations realize without rendering negative impacts on an agriculture, the soil and the environment, …
Analysis Challenge Protection Of Information From Attacks And Construction Of A Formal Model For Protecting Network Traffic., M.M Karimov, Sh.R Gulomov
Analysis Challenge Protection Of Information From Attacks And Construction Of A Formal Model For Protecting Network Traffic., M.M Karimov, Sh.R Gulomov
Chemical Technology, Control and Management
In this paper a formal model for protecting information from DDoS attacks, allows to improve the efficiency of computer networks, taking into account the interaction of detection modules and the use of formal set-theoretic constructions are proposed.
Sustainable Algorithms For Synthesis Of Local-Optimal Adaptive Dynamic Object Management Systems., H.Z Igamberdiyev, J.U Sevinov, A.N Yusupbekov, O.O Zaripov
Sustainable Algorithms For Synthesis Of Local-Optimal Adaptive Dynamic Object Management Systems., H.Z Igamberdiyev, J.U Sevinov, A.N Yusupbekov, O.O Zaripov
Chemical Technology, Control and Management
Stable algorithms for the formation of control actions in local-optimal adaptive control systems for dynamic objects are given. Considering that the initial equations for estimating the parameters of an object and a control device, as a rule, are ill-conditioned, it becomes necessary to use regular methods. The stable algorithms for finding the desired solutions based on the methods of the minimum pseudoinverse matrix and singular decomposition, which contribute to improving the accuracy of the formation of control actions, are given.
Nonlinear Dynamics With Chaotic Processes In Biotechnology And Genetic Engineering., M.A Ismailov, M. Saidalieva, M.B Hidirova
Nonlinear Dynamics With Chaotic Processes In Biotechnology And Genetic Engineering., M.A Ismailov, M. Saidalieva, M.B Hidirova
Chemical Technology, Control and Management
This paper deals with modeling genetic systems activity during manipulation of an organism’s genes using biotechnology. Computational experiments show that at certain values of internal and external cellular conditions there are exist the following regimes: stationary state, auto-oscillations and chaotic behavior of gene regulatory network linkages.
Algorithm For Optimization Of The Membership Function Of The Fuzzy Control Model On The Basis Of The Probabilistic Approach., I.Kh Siddikov, S.T Yunusova, R.N Izmaylova
Algorithm For Optimization Of The Membership Function Of The Fuzzy Control Model On The Basis Of The Probabilistic Approach., I.Kh Siddikov, S.T Yunusova, R.N Izmaylova
Chemical Technology, Control and Management
The problem of optimization of the fuzzy control model of the drying unit in the cotton ginning industry operating under conditions of a priori uncertainty is considered. As an example, the process of temperature control in a drying unit is considered. As methods of optimization, it is proposed to use probabilistic methods. As an optimization parameter, the fuzzy model membership functions are used. A comparative analysis of the results obtained on the basis of simulation modeling before and after optimization is carried out.
Workflow Specification And Inference In Some Extension Of Allen’S Interval Logic., G.S Plesniewicz
Workflow Specification And Inference In Some Extension Of Allen’S Interval Logic., G.S Plesniewicz
Chemical Technology, Control and Management
A workflow is an automation of a process, in which agents (people or programs) are involved in activities for solving a set of tasks in order to attain a common goal. The concept of workflow appeared in business informatics. Currently, the workflow techniques are used in many other fields of informatics (medical and bioinformatics, organization of scientific researches, computer-aided design and manufacturing, robotics et al,) Many methods and formalisms were applied for specifying workflows. Specific logical languages were used for this. In particular, temporal logics are popular as workflow specification formalisms. Allen’s interval logic is the simplest temporal logic, but …
Principles Of Management Of Agrotechnological Systems., V.A Korolev, A.M Bashilov, V.N Toporkov, Z.O Eshmurodov
Principles Of Management Of Agrotechnological Systems., V.A Korolev, A.M Bashilov, V.N Toporkov, Z.O Eshmurodov
Chemical Technology, Control and Management
Modern approaches to the solution of problems of increase in the outputs and quality, reduction of cost of agricultural production, negative impacts of agropro-technologies on the environment provide consideration of transformation of energy in agroprocesses as a part of uniform agrotechnological systems. Creation of a control system of devices of different function and application on the basis of modular model doesn't demand development of difficult algorithms and schemes of management. Application of modular models, use in them standard mathematical dependences for forecasting of changes of characteristics of processes and management significantly simplifies technical realization of elements of a technogenic part …
Automation Of The Calculation Of Uncertainty Measurements., O.Sh Khakimov, G.A Gaziyev
Automation Of The Calculation Of Uncertainty Measurements., O.Sh Khakimov, G.A Gaziyev
Chemical Technology, Control and Management
The work presented in this report described a program that allows calculating the results of direct and indirect measurements, evaluates their standard, total and extended type A and B uncertainties by reduction and linearization methods, calculate the sensitivity coefficients of the output (measured) value estimation, to changes in the estimates of input quantities (BB), the contribution of standard uncertainties (СН) ВВ to the total СН of type A and type B, determine the coverage factor, to make the budget of uncertainty of measurements.
Mathematical Modeling Of A Gas Burner Of Combustion Of Natural Gas In Glass Furnaces., N.X Bobomurodov, U.U Holmanov
Mathematical Modeling Of A Gas Burner Of Combustion Of Natural Gas In Glass Furnaces., N.X Bobomurodov, U.U Holmanov
Chemical Technology, Control and Management
The mathematical modeling of processes, flowing gas burners of glass melting furnaces, is performed. Models are proposed in the form of equations for the material and heat balance with the physical variables of natural gas and air entering the burner. Calculations of the calorific value of gas fuel are performed, the equations of combustion of simple gases, the consumption of the oxidizer and the amount of products of complete combustion are given in theoretical conditions.