2018 Dynamics of Systems, Mechanisms and Machines (Dynamics)最新文献

{"title":"Limitation of Weakly Damped Shaft Lines Power Stations Torsional Vibrations at Subsynchronous Frequencies in Distributed Generation Power Systems","authors":"D. V. Rysev, P. V. Rysev, K. Shulga, V. Serdyuk, N. Lizalek","doi":"10.1109/DYNAMICS.2018.8601453","DOIUrl":"https://doi.org/10.1109/DYNAMICS.2018.8601453","url":null,"abstract":"The possibility of limiting the amplitude of the turbine shaft line torsional vibrations by introducing additional units into the automatic excitation regulator of the generator is studied. The mathematical model of the power system, including the electric and mechanical subsystem of the turbine, is developed. The structure of an automatic excitation regulator is given. A quadratic controller is implemented that makes to reduce the amplitudes of torsional oscillations. The system is modeled without the controller and with it. The dependence of the amplitude of the torsional oscillations on the gain factor of the controller is obtained. By this dependence it can be concluded that the increase of the coefficient of the quadratic controller makes it possible to reduce the amplitude of the oscillations.","PeriodicalId":394567,"journal":{"name":"2018 Dynamics of Systems, Mechanisms and Machines (Dynamics)","volume":"38 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116648143","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analysing the One-phase Loads Influence on the Three-phase Discharge Lamps Work in the 380/220 V Network","authors":"V. Y. Olhovskiy, T. Myateg, S. V. Myateg","doi":"10.1109/DYNAMICS.2018.8601501","DOIUrl":"https://doi.org/10.1109/DYNAMICS.2018.8601501","url":null,"abstract":"One of the most important features of up-to-date technical progress in power engineering is a continuous increase of so called non-linear loads in amount and power. Such loads in electrical network result in high harmonics voltage production which causes a number of negative effects (voltage losses, network lines isolation core overheating etc.) in electrical network equipment functioning. The valve inverter and regulating devices are the most widely used among non-linear loads. These devices operate at 380/220 V.Such a tendency is typical of any powersupply systems, for example industrial, urban, rural and others. However the combination of high harmonics and load unbalance is good for the stable operation of some consumers which are critical to the supply voltage level.That is why the necessity to the reconsideration of the tradition approach to the analyzing the load unbalance and high harmonics on the 380/220 V network and the adjacent consumers operation.","PeriodicalId":394567,"journal":{"name":"2018 Dynamics of Systems, Mechanisms and Machines (Dynamics)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125717119","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nonlinear-Periodic Control System for Non-Affine Plant With Neutral Type Delay","authors":"E. L. Eremin, E. A. Shelenok","doi":"10.1109/DYNAMICS.2018.8601452","DOIUrl":"https://doi.org/10.1109/DYNAMICS.2018.8601452","url":null,"abstract":"Article deals with the problem of synthesis of automatic control system algorithms for input non-affine plants, which are contain neutral type delay and which are functioning under a priori uncertainty. The problem solution is based on the use of hyperstability criterion, L-dissipativity conditions and parallel reference model with two outputs. The key stage of the synthesis is the receipt for V. M. Popov’s inequality special integral estimates that are ensure the fulfillment of the control goal. With the help of computational experiments, the quality of the control system is illustrated.","PeriodicalId":394567,"journal":{"name":"2018 Dynamics of Systems, Mechanisms and Machines (Dynamics)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128542552","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Distribution of Virtual Machines in Cloud Infrastructure with the Account of Various Posibilities of Access to Data Storage Systems","authors":"A. Zharikov, O. Konstantinova, O. Ternovoy","doi":"10.1109/DYNAMICS.2018.8601456","DOIUrl":"https://doi.org/10.1109/DYNAMICS.2018.8601456","url":null,"abstract":"the article addresses the well-known \"knapsack problem\" in the context of the distribution of virtual servers within the cloud infrastructure. At the same time, the main focus in solving this problem is the distribution of virtual machines within the cloud, which includes resources with different access capabilities. The mathematical model proposed in the article allows conducting optimal allocation of resources not only taking into account such parameters as random access memory and processor power, but also parameters of data storage systems related to memory capacity and access speed. The resulting model was tested on a real network infrastructure. From a practical perspective, the method of virtual machines distribution under question allows using the low-power devices available at the data center.","PeriodicalId":394567,"journal":{"name":"2018 Dynamics of Systems, Mechanisms and Machines (Dynamics)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127175134","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Determination of Equivalent Circuit Parameters of the Electric Pulse Device for Cleaning the Surface from Contamination","authors":"A. S. Tatevosyan, A. Tatevosyan, N. V. Zakharova, A. A. Lukacheva","doi":"10.1109/DYNAMICS.2018.8601435","DOIUrl":"https://doi.org/10.1109/DYNAMICS.2018.8601435","url":null,"abstract":"Electrostatic filters for gaseous mediums cleaning from coal dust are widely used at enterprises of fuel and energy complex. By using them, materials are separated by the method of isolation of dispersed particles using an electrostatic effect and deodorization. While electrostatic filters operation, the coal dust is constantly accumulated on the plated electrodes. With increasing in coal dust layer, the quality of cleaning gaseous medium by filters decreases, which causes the need for periodic cleaning them up. In powerful production units and the collecting plate electrodes are mechanically shaken, with a deposited electrode layer of coal dust under the action of gravity is dropped into a special tank and then utilized. Among the known methods of cleaning plated electrodes of the electrostatic filters (power mechanical action, the generation of sound waves) the most efficient is the use of electro-impulse cleaning devices. In this device, there is a high voltage discharge of a capacitor to an executive element consisting of a coil of the inductor and an anchor(conductive plate). As a result of the interaction of eddy currents in the armature by the magnetic field of inductor coils for the transient time, measured in milliseconds, there is a pulse of electromagnetic force that creates the maximum displacement and acceleration of the surface of plate electrodes of an electrostatic filter in the range of elastic mechanical stress. In this article we propose a technique to calculate the parameters of a two-loop equivalent circuit of the electro-impulse cleaning device based on decomposition of a DC decay curve in a shorted coil inductor with an anchor in the exponential series. The decay of the current curve in the inductor coil as a sum of two exponentials allows the operator to record the resistance of the equivalent circuit of the electric pulse cleaning device and use it to obtain formulas for determination of its parameters. The use of equivalent circuits of electric pulse cleaning devices allows to use the well-developed mathematical apparatus of electrical circuits theory to optimize the power exposure for the plate electrodes of the electrostatic filters. Determination of the DC decay curve in the inductor coil with an anchor for variation of the distance between them is based on the calculation of transient magnetic field with an attached chain in the software complex ELCUT 6.0 (professional version).","PeriodicalId":394567,"journal":{"name":"2018 Dynamics of Systems, Mechanisms and Machines (Dynamics)","volume":"132 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127372178","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Dynamics of the Active Power Consumption by the Production Well with the Use of a Downhole Compensator","authors":"V. Kopyrin","doi":"10.25206/2310-9793-2018-6-3-41-46","DOIUrl":"https://doi.org/10.25206/2310-9793-2018-6-3-41-46","url":null,"abstract":"Nowadays, reducing the share of energy losses from the total oil wells’ energy consumption is becoming a central objective. This publication purpose is to assess the energy-saving effect of the downhole reactive power compensators’ used in the composition of the electric centrifugal pumps. The function EE characterizing the effective use dynamics of the consumed active power by installation before and after compensation of reactive power in a well is offered. The surfaces of the EE function are constructed. They depend on the power of the submersible induction motor, the length and cross section of the cable line, which can be estimated energy-saving effect when using downhole compensators. It was found that the calculated indicator of the EE function varies from 0.6 % to 15.8 % depending on the submersible motor’s power, the power of the downhole compensator, the length and cross section of the cable line. The expediency using of the downhole compensators in the composition of electric-center pumps at the oil production facilities is substantiated.","PeriodicalId":394567,"journal":{"name":"2018 Dynamics of Systems, Mechanisms and Machines (Dynamics)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121743171","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Error Correction of Transmission of Binary Information","authors":"O. P. Shafeeva, V. Makarov, A. Gritsay, D. Tyunkov, D. M. Bogorad","doi":"10.1109/DYNAMICS.2018.8601459","DOIUrl":"https://doi.org/10.1109/DYNAMICS.2018.8601459","url":null,"abstract":"The problem of increase in reliability of transmission and data storage in computing systems and networks for the purpose of creation of new codes for detection and error correction is considered. The vectorial encoding technique having small information redundance - one check bit on a binary data word is researched, graphic and mathematical methods of its representation are considered. The new varieties of vectorial codes described in the form of polynomials for error correction in flows of words of binary data or in the arrays which are dynamically transferred between components of the computing system which allow to increase the frequency of detection and correction of errors are offered.","PeriodicalId":394567,"journal":{"name":"2018 Dynamics of Systems, Mechanisms and Machines (Dynamics)","volume":"6 9","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114018451","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}