bluuebunny/crossref_metadata_2025_split huggingface dataset:
Application of the experimental design algorithms to the construction of estimated subsets of minimum covariance determinant method
Authors: Usova I O , Khailenko E A 
Published: November 2019

Abstract
The problem of stable estimation of errors in variables models is considered in this paper. The basic concepts of experimental design methods, orthogonal regression method, the minimum covariance determinant method are investigated. Experiment planning methods use to form estimated subsets in order to achieve more accurate estimation results. Designs of experiments will allow one to receive the most informative points on which estimation will be made. Research, displaying change in the condition of the D-optimal design when applying different spectra of the design and in the conditions of various kinds of emissions, has been conducted in this work. According to the research it is found that the most accurate estimates are obtained when applying the methods of experiment planning.
Simulation of a mixer with a bidirectional rotational effect on material
Authors: Yudin K A , Khakhalev P A 
Published: November 2019

Abstract
The investigation of the mixer with bidirectional rotational impact on material is continued. The rotation of spherical mixing chamber is carried out by means of a drive using belting, chaining and beveling gears. The mixing of material in a chamber occurs relatively to two mutually perpendicular axes. The arising complex spatial movement of particles of a material can be regulated by a frequency converter and the corresponding elements of rotation gears. Preliminary experimental studies on the implemented laboratory facility are conducted. A digital model of the proposed device using the NX product is created. The analysis of the behavior of particles of mixed material, implemented using the EDEM package, is presented. The relevant conclusions are made.
Automation of determining the contact angle of washing liquids wetting
Authors: Alekseev V V , Philippov V P , Fadeev I V , Chuchkalov S I 
Published: November 2019

Abstract
The physicochemical activity of the washing environment is related to the value of the contact wetting angle of the solution and the body being washed and changes rather quickly. In this study a technique and software tool were developed for the rapid determination of the dependence of the contact wetting angle on the concentration of surface-active substances (surfactants) and the selection of optimal values. The technique was based on pixel-by-pixel processing of photographs of cleaning solutions droplets on various types of the studied surfaces with using color contrasting. The data were processed by statistical methods which allow determining the value of the derivative of the surface equation and finding the contact wetting angle. The dependence of the wetting angle on the surfactant concentration was studied using multiplicative power functions. The results showed a decreasing return value of the contact wetting angle from increasing surfactant concentration. It was defined that the influence of potassium monoborate (PMB) together with MS-8 is the most effective. The obtained results allow calculating and optimizing surfactants percentage defining the quality and performance of the washing process at the design stage of the technological process for various options for the combined use of surfactants.
A parallel optimization algorithm for predictive control of marine vessel
Authors: Borisov A N , Siek J L 
Published: November 2019

Abstract
Control of marine moving objects is a complex task, which requires considering the nonlinearity of the control object, as well as random wind-wave disturbances. One of the modern strategies is the model predictive control. The article investigates the possibilities of parallel computing technologies to solve the problem of finding the optimal sequence of control vectors in predictive control of a marine vessel. The basic concepts and mathematical model of control systems with prediction are given. Then the optimization problem is formulated. The use of SMP-systems and parallel algorithms is substantiated. Then we describe one of the most common parallel programming technologies - OpenMp. A parallel version of the conditional optimization algorithm is presented, as well as the quality functional used in the control. The results of modeling in a multi-core system with shared memory are presented. In conclusion, further directions of research, as well as possible ways to improve performance are proposed. All presented models are implemented in C++.
The optimization of contact sensors motion path in carrying out control operations
Authors: Glinskaya N Y , Elagin V V 
Published: November 2019

Abstract
The article examines the problem of raising control operations efficiency through measurement mechanisms transference optimization. For solving the problem it is proposed to use the discrete optimization method, based on solving the “traveling salesman” problem. The article demonstrates the comparison of the “greedy” algorithm and the branch – and – bound method and proves the necessity to use optimized algorithms, as even approximate algorithms make it possible to reduce the length of the way monitoring sensor passed. Reducing the length of the way the monitoring sensor passes leads to reducing the control operation time. The time gain depends on the quantity of controlled parameters.
Managing the processes accompanying fluid motion inside oil field converging-diverging pipes
Authors: Khabibullin M Ya 
Published: November 2019

Abstract
In recent years, there is an increased interest in pipes with regularly variable section area (converging-diverging pipes) in the oil chemical industry. At the same time, there is no simple engineering technique for calculation of hydrodynamic characteristics of such devices, which significantly impedes computations for mass exchange processes inside them. Attempts to concentrate energy dissipation and their control near the phase boundary were mainly directed at using the fluid flow pulses induced by an external generator, alternating displacement field, pulses caused by fluid flow through the conduit with a variable cross-section. As a result, it has been revealed that the forces determined by action of convective acceleration are capable of causing a significant deformation and breakage of disperse inclusions (drops and bubbles). For rigid particles, the action of the convective acceleration leads to a periodic impulse renewal of liquid near the surface of the rigid particle.
A workload distribution problem model and online constraint forming technique for the control systems in the fog-computing environment
Authors: Melnik E V , Klimenko A B 
Published: November 2019

Abstract
The paper deals with the workload distribution problem in the fog-computing environments. This problem is topical due to the wide range of networked control systems functioning on the basis of cloud and fog-computing infrastructure. The latter presupposes the techniques of workload relocation between the cloud, fog, and, in particular, the endpoint devices. As control systems have their own requirements in terms of latency, reliability, fault-tolerance, etc., the specific techniques must be developed to deliver these particular features using the fog-computing infrastructure. In the current paper a problem model of workload relocation is presented, the problem of constraints forming is considered and the new constraint forming technique is proposed.
Computer diagnostics of resistance spot welding based on Hamming neural network
Authors: Klimov V S , Klimov A S , Mkrtychev S V 
Published: November 2019

Abstract
The article deals with utilizing the method of qualitative assessment of welding zone dynamic resistance based on a Hamming neural network to increase versatility and reliability of computer diagnostics for resistance spot welding. We propose a mechanism for encoding information on dynamic resistance into bipolar signals required for the neural network tuning and operation. The algorithm of welding diagnostics was developed and implemented with specialized software. The results of the neural network training and testing are presented. As the analysis shows, the relative error in predicting destruction force does not exceed 10%. The approach proposed in this article complies with the requirements of ISO 9000:2015 standard for continuous monitoring and documentation of each welded connection and allows for increased accuracy of computer diagnostics of welds.
Hardware and information system for the recording of the working time of universal metal-working machines
Authors: Kotov V V , Lyublinsky M S , Chashchin E A , Maslakova G V 
Published: November 2019

Abstract
The article is aimed at implementing the principles of lean manufacturing at machine-building enterprises. It considers the task of monitoring and analyzing the efficiency of using the machine time of the universal machine park, where CNC is not used. It also does not provide for the possibility to register information and promptly take into account the duration and modes of operation of the machine. The article proposes a software-hardware solution, in which the idea of machine loading in an automated mode is formed without the influence of the “human factor”. The data are generated based on the registration of the current strength consumed by the machine. The developed information system allows us to generate a report and a load schedule for each piece of equipment for a selected period of time. The result is a reduction in downtime up to 2 times and an increase in output by 25%.
Synthesis of vector control systems by localization method
Authors: Kucher E S , Popov N S , Gryzunova T V 
Published: November 2019

Abstract
The paper presents a method for synthesis of a speed control system of induction motor drive and synthesis of output voltage control system for permanent magnet synchronous generator fed by three phase inverter with active rectifier. The mathematical model of a wind mill connected to the permanent magnet synchronous generator unit with output voltage control is considered. A structural and parametric synthesis of vector control systems can be implemented using a special localization method, which makes it possible to purposefully organize loops of slow and fast motions by establishing deep feedbacks. The developed localization method of control systems synthesis provides robust and stable operation of objects under study. The paper also examines difficulties in the differentiating filter designing. The approach of multimovement closed loops design is used to decompose the synthesis task. Deep feedbacks allow engineers to design control systems insensitive to disturbances and to compensate signal and parametric disturbances of control object. The proposed approach could be used for synthesis of wide range of nonlinear and unstable systems. The operability and robustness of proposed approach is discussed in this paper.
Implementation of the energy-saving lighting mode in the poultry-farming house due to the automated control system
Authors: Loshkarev I Yu , Shirobokova T A , Baranova I A , Batanov S D 
Published: November 2019

Abstract
The reduction of energy costs in the production of livestock products by maintaining the required illumination parameters is an important task. The results of studies on the development of a program for automatic control and maintenance of lighting parameters in premises for keeping birds, depending on the cross, technologies of keeping and the age of birds, using programmable logic controllers (PLC) are presented. The use of a dimming system will reduce the energy consumption of lighting equipment and increase the efficiency of electrical energy use.
Service system and monitoring of information terminals for protection of railway lines of long-distance trains
Authors: Kuznetsov S M , Myatezh A V , Rozhkova M V , Tenkovskaya S A , Akifeva E V , Ivanov A V 
Published: November 2019

Abstract
The paper proposes the innovative system of connecting digital terminals to a personal computer of a traction substation and a power dispatcher via remote access thus expanding control and observation over the system and facilitating the operation with In-Ter device. The real time work of In-Ter terminals can be performed by a power dispatcher and can be monitored by an engineer of the technical department of the energy service of an enterprise. This option will allow obtaining useful information quickly and changing the protection settings of a terminal if necessary, analyzing the compliance of loadings, emergency currents and settings in the technical department of the energy service of the enterprise to decrease cases of false activation of protection.
Hierarchical structure of the electronic information model of a ship
Authors: Zub O V , Nesin D U 
Published: November 2019

Abstract
This article focuses on approaches based on shipbuilding simulation such as digital shipbuilding, Simulation Based Design (SBD), and virtual shipyard. The article deals with the main aspects of methodology of selecting the type of the hierarchical structure of the Electronic Information Model of a Ship (EIMS). The selection of a particular representation of the EIMC structure is ambiguous: on the one hand, the model structure must include the most general elements of the object (ship) hierarchy, encompassing all stages of the lifecycle; on the other hand, as shown above, hierarchical elements of each stage are specific. General principles of structuring EIMS are considered, and influence of essential criteria of EIMS use at different stages of the ship lifecycle is analyzed. The most optimal hierarchical structure of EMIS is selected using the expert estimation method (chosen by investigation), which is based on a combined approach of the analytic hierarchy process introduced by T. Saaty. The expert analysis indicates importance of selection of EIMC structure type prior to initiation of implementing the lifecycle of a particular ship, provided that PLM systems are used.
Improving safety of the operation of pipe heaters oil and gas production
Authors: Bashirov M G , Luneva N N , Evdokimova N G , Khafizov A M 
Published: November 2019

Abstract
In technological processes of modern enterprises of oil and gas production flammable and explosive substances turn, which, combined with a wide range of changes and extreme values of technological parameters - temperature, pressure, flow rate, corrosivity, causes high rates of accidents risk. Pipe heating furnaces are among the most dangerous objects of oil and gas production, more than 10% of all accidents occur on them. Cause most of these accidents is leakage of pipe coil and the ingress of the process medium into the combustion space of the pipe heater. During operation, irreversible damage accumulates in the pipe coil metal, there is an uneven stress-strain state due to thermal force loading, there is a carbon deposition on the inner surface. This article discusses the process of carbon-producing in the pipe heaters on the example of a pipe heater box type using a computer predictive model of the production process. According to the results of the study, a new evaluation criterion for the level of coking of the pipe coil – the rate of carbon-producing is proposed and its value corresponding to the maximum permissible level of coking is determined. Calculation of the rate of carbon-producing is carried out by virtual quality analyzers using the process parameters of the carbon-producing.
Approximation of the parallel robot working area using the method of nonuniform covering
Authors: Gaponenko E V , Malyshev D I , Behera L 
Published: November 2019

Abstract
The article describes the application of optimization algorithms for solving the problem of determining the working area of a parallel 6-DOF relative mechanism device, which includes a flat 3-RRR mechanism and a tripod mechanism. The method for approximation of the set of nonlinear inequalities system solutions describing constraints on the geometric parameters of the robot, based on the concept of nonuniform coverings, is considered. Based on the method, external and internal approximations are obtained, given as a set of parallelepipeds. The working area of the relative mechanism device has been obtained, taking into account the restrictions on the geometric parameters of the workpiece located in a moving coordinate system located in the center of a flat 3-RRR mechanism. The moving coordinate system is located in the center of the planar mechanism.
Determination of external power factors influencing un-manned aerial vehicle of “flying wing” type
Authors: Smirnov A N , Govorkov A S , Fokin I V 
Published: November 2019

Abstract
This article touches upon the issue of determination of external force factors influencing an unmanned aerial vehicle or drone in critical flight modes for further transition to the full-scale engineering development. A brief review of the design of the developing vehicle is given. A simplified three-dimensional model is created. On the basis of the 3d model and with the help of the FloEFD computer complex, the aerodynamic analysis of the chosen design of the developed unmanned aerial vehicle is carried out. The dependences of the available speed and disposable tangential overloads of flight acceleration are obtained. The minimum permissible horizontal flight acceleration is calculated. The aerodynamic coefficients of the used wing profile are given. The value of the available tangential overload for different flight speeds is defined. The relation of the maximum trajectory angle of inclination against the flight speed when flying above the ground is calculated. The minimum allowable catapulted take-off speed is calculated. This speed allows determining an allowable trajectory angle of the incline for the rectilinear altitude gain. The pressure distribution over the outer surface of the fuselage and the wing consoles of an unmanned aerial vehicle is obtained. The value of the acting axial force is calculated for take-off modes with different angles of inclination of the trajectory and for a horizontal straight-line flight at a constant speed.
Building a conceptual model of the chain harmonic drive
Authors: Kamenev S V 
Published: November 2019

Abstract
The harmonic drive is a relatively new type of mechanical drives which application increases continuously in different fields of the industry. The rapid growth of application is driven by a number of advantages in comparison to the conventional drives such as gear and belt drives. The effective use of the harmonic drive, however, is limited because of difficulties in designing of such drives. One of the problems is the non-optimal typical design of the harmonic drive that can be improved in different ways. They include designing the harmonic drives in the framework of the closed roller chain using different modelling approaches. The mathematical modelling on the basis of CAD/CAE software appears to be the most effective of them. This article presents the method for building an alternate design of the harmonic drive based on the standard roller chain using commercial software «Siemens NX». Implementation of this method involves the CAD-modelling and multibody simulation to obtain the final geometry of the drive.
A blockchain-based technique for making swarm robots distributed decision
Authors: Melnik E V , Klimenko A B , Ivanov D Y 
Published: November 2019

Abstract
The paper considers the problem of distributed decision making in the robot swarm. The enhancement technique of the related study approach is proposed using the data transmission distance constraints and the weighted voting strategy. The decision making process is organized by means of distributed ledger usage. The information propagation through the swarm is implemented via spreading randomized rumor. The avoidance of routing in the swarm improves the overall energy efficiency of the system. The weighted voting transactions take into account the positions of the robots relating to the unknown objects or obstacles, as well as the voting history, which is stored in a distributed ledger
A model of the water environment action on anthropomorphic robot arms
Authors: Kramar V A , Dushko V R 
Published: November 2019

Abstract
The article deals with the technology of constructing a 3-D velocity field mathematical model for flow around manipulators of anthropomorphic robots, such as the SAR-400 robot, when subjected to wave and constant currents. The studies show that when building control systems for manipulators operating underwater, it is necessary to take into account the arising forces acting on the manipulators as external disturbances that impede the precise fulfillment of control tasks. Methods for calculating 3-D velocity fields under the influence of wave and constant currents on the structural elements of manipulators of an underwater anthropomorphic robot as cylinders of large and small elongations are considered. A numerical simulation of the evolution of the flow velocity and pressure fields in a flow past a cylinder has been performed. The proposed approaches will allow the simulation of external disturbances acting on the manipulators of the robot working under water when constructing their control laws.
Analysis of energy conversion in the instantaneous power transfer process in the electromechanical system with variable inductance
Authors: Neyman V Yu 
Published: November 2019

Abstract
The paper presents the analysis of energy conversion processes in the dc electromechanical devices with variable inductances. With respect to the instantaneous power balance in the electromechanical system, the mechanical power transfer is considered for the operating cycle. The generalized structural model of the electromechanical converter with variable inductance is proposed. The model consists of three subsystems which are cascaded by instantaneous power transfer channels. The model is distinguished by the internal magnetic energy source in the magnetic subsystem with additional channels for magnetic power transfer. Energy conversion conditions influence the instantaneous power transfer channel operation. The magnetic energy restoring factor and its sign are the criterions of the energy conversion processes difference. The instantaneous power flux circulation accompanied by complicated electromagnetic energy conversion processes in dynamic modes is established by experiments.
The Russian draft bill of “the Grishin Law” in terms of improving the legal regulation of relations in the field of robotics: critical analysis
Authors: Vasilyev A A , Ibragimov Zh I , Gubernatorova E V 
Published: November 2019

Abstract
The article presents a critical review of the Russian draft bill of “the Grishin Law” on the regulation of relations in the field of robotics. The subject of the research is the problem of vesting autonomous robots with legal personality characteristics. The theoretical basis of the article is the modern scientific achievements in the field of artificial intelligence and neural networks, the legal debate on the social and legal implications of the use of autonomous robots. The authors analyze the approaches of the bill developers in terms of endowing autonomous robots with the characteristics of a subject of law. The authors come to the conclusion that it is necessary to develop a universal international document on the matter of establishing liability for harm caused by autonomous robots and introducing a safety requirement of this technology for a person at the level of technical standards.