Cybernetics and Physics最新文献

Feasibility study of permanent magnet dipoles for SILA facility 为南亚海洋研究所设施设计永磁偶极子的可行性研究

Cybernetics and Physics Pub Date : 2023-12-31 DOI: 10.35470/2226-4116-2023-12-4-252-256

D. Arslanova, Yuri Gavrish, Elena Gapionok, Aleksandra Grosheva, Nikita Knyazev, Vladimir Kukhtin, Eugeny Lamzin, A. Nezhentzev, Alexander Ovsyannikov, Dmitri Ovsyannikov, Sergey Sytchevsky, Nataliia Znamenshchikova

引用次数: 0

Suitability of different machine learning methods for high-speed flow modeling issues 不同机器学习方法在高速流动建模问题上的适用性

Cybernetics and Physics Pub Date : 2023-12-31 DOI: 10.35470/2226-4116-2023-12-4-264-274

Vladimir A. Istomin, Semen A. Pavlov

{"title":"Suitability of different machine learning methods for high-speed flow modeling issues","authors":"Vladimir A. Istomin, Semen A. Pavlov","doi":"10.35470/2226-4116-2023-12-4-264-274","DOIUrl":"https://doi.org/10.35470/2226-4116-2023-12-4-264-274","url":null,"abstract":"In the present study, machine learning algorithms are applied for modeling transport coefficients in strongly nonequilibrium reacting gas flows. As a model case, the problem of a hypersonic flow of a five-component air mixture around a sphere is considered. Various approaches for an application of machine learning methods, such as linear regression, k-nearest neighbors, support vector machine, regression tree, random forest, gradient boosting, and neural network (multilayer perceptron) are investigated. For the transport coefficients regression modeling the combination of machine learning methods with the finite volume method is constructed. The machine learning regressors are trained on the accurate numerical data given by one-temperature approach of the kinetic theory. The results of trained models are compared with approximate formulae of Blottner-Eucken-Wilke model. The results of different machine learning methods are analyzed in terms of the relationship between the obtained accuracy of calculations and the overall speed of calculations. The overall time of dataset formation and model training is estimated. The design of the constructed multilayer perceptron is discussed. The machine learning methods considered in the article can be used for the engineering problem such as design of high-speed aircraft, as well as for modeling of flows around complex shape bodies.","PeriodicalId":37674,"journal":{"name":"Cybernetics and Physics","volume":"112 27","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139133210","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}

引用次数: 0

Enhancing functionality of two-rotor vibration machine by automatic control 通过自动控制增强双转子振动机的功能

Cybernetics and Physics Pub Date : 2023-12-31 DOI: 10.35470/2226-4116-2023-12-4-289-295

I. Zaitceva, Boris Andrievsky, Leonid A. Sivachenko

{"title":"Enhancing functionality of two-rotor vibration machine by automatic control","authors":"I. Zaitceva, Boris Andrievsky, Leonid A. Sivachenko","doi":"10.35470/2226-4116-2023-12-4-289-295","DOIUrl":"https://doi.org/10.35470/2226-4116-2023-12-4-289-295","url":null,"abstract":"The demand for the development of cyber-physical systems remains high across various production sectors. While some industries have made significant strides, others still require ongoing research and development efforts. This article delves into the application of feedback control for equipment in the processing industry, using a two-rotor vibration machine equipped with induction motors as a case study. Conventionally, such equipment is manually operated with the help of affordable constructive facilities, which does not align with the principles of Industry 4.0. In response, this paper explores an architecture for an automatic control system capable of handling various technological tasks, including mixing and transporting processed media. This architecture encompasses several components, such as real-time regulator tuning, control of the rotor speed loop, and/or adjustment of the phase shift between the rotors based on machine sensor measurements. A notable advantage of this control system lies in its complete software-based implementation. The article also presents the findings from full-scale experiments, demonstrating the capabilities and effectiveness of the proposed approach.","PeriodicalId":37674,"journal":{"name":"Cybernetics and Physics","volume":"22 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139130021","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}

引用次数: 0

Some more on restoring distance matrices between DNA chains: reliability coefficients 关于 DNA 链间距离矩阵恢复的更多信息：可靠性系数

Cybernetics and Physics Pub Date : 2023-12-31 DOI: 10.35470/2226-4116-2023-12-4-237-251

Mikhail Abramyan, Boris Melnikov, Ye Zhang

{"title":"Some more on restoring distance matrices between DNA chains: reliability coefficients","authors":"Mikhail Abramyan, Boris Melnikov, Ye Zhang","doi":"10.35470/2226-4116-2023-12-4-237-251","DOIUrl":"https://doi.org/10.35470/2226-4116-2023-12-4-237-251","url":null,"abstract":"This article is a description of the continuation of previous research by the authors related to the restoration of distance matrices. The main difficulty that arises with such a recovery is that it is impossible to use conventional techniques such as variants of gradient descent algorithms, since too many variables would arise. In addition, in this article we also do not use algorithms for variants of the branch and boundary method, which in our previous publications were sometimes used for the problem considered in the article; the main argument for not using it is that using it would provide little information about the subtasks generated by this algorithm, in particular, it is difficult to adequately assess the real the values of the resulting boundaries. Therefore, we use the so-called step-by-step filling of the distance matrix. In the approach presented in the paper we consider, that the algorithm of the initial distance formation works in the best way. Therefore, we conditionally believe that the corresponding value of badness cannot be improved. This assumption really makes it possible to improve the value of badness. Thus, in this paper we have obtained practical results of reconstructing distance matrices, which significantly improve the results given in our previous papers.","PeriodicalId":37674,"journal":{"name":"Cybernetics and Physics","volume":"117 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139134077","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}

引用次数: 0

Digital control of the synchronous modes of the two-rotor vibration set-up 双旋翼振动装置同步模式的数字控制

Cybernetics and Physics Pub Date : 2023-12-31 DOI: 10.35470/2226-4116-2023-12-4-282-288

O. Tomchina

引用次数: 0

Convergent and oscillatory solutions in infinite-dimensional synchronization systems 无穷维同步系统中的收敛解和振荡解

Cybernetics and Physics Pub Date : 2023-12-31 DOI: 10.35470/2226-4116-2023-12-4-257-263

Alexandr P. Elsakov, A. Proskurnikov, V. Smirnova

引用次数: 0

Adaptive exchange protocol for multi-agent communication in augmented reality system 增强现实系统中多代理通信的自适应交换协议

Cybernetics and Physics Pub Date : 2023-12-31 DOI: 10.35470/2226-4116-2023-12-4-275-281

Ekaterina Moseyko, V. Erofeeva, Oleg Granichin

引用次数: 0

Controlled motion modes of a gyroscopic pendulum in a gimbal suspension 万向悬架中陀螺摆的受控运动模式

Cybernetics and Physics Pub Date : 2023-11-30 DOI: 10.35470/2226-4116-2023-12-3-207-218

Alexey Smirnov, Konstantin Sarvilov

{"title":"Controlled motion modes of a gyroscopic pendulum in a gimbal suspension","authors":"Alexey Smirnov, Konstantin Sarvilov","doi":"10.35470/2226-4116-2023-12-3-207-218","DOIUrl":"https://doi.org/10.35470/2226-4116-2023-12-3-207-218","url":null,"abstract":"The issues of controlling the motion of a gyroscopic pendulum fixed in a gimbal suspension and having three degrees of freedom are discussed in the paper. It is proposed to use physical analogies and correlate their action with the dissipative forces of external viscous friction, friction in gimbal joints and internal friction in the pendulum rod, as well as inertial forces and gyroscopic forces to form the control torques in gimbal joints. Six modes of controlled movement of the system are considered, which allow achieving various goals. It is shown that it is possible to completely suppress the motions of a gyroscopic pendulum, switch it to the mode of a spherical or physical pendulum, enter the mode of rotation around a fixed vertical axis, bring it to the mode of regular precession, and also strengthen or weaken the gyroscopic structure of the motion equations. The discussion of these modes of controlled motion is accompanied by the construction of motion equations both within the framework of the original nonlinear model and for simplified linear or weakly nonlinear models. The obtained results are theoretically interesting and may be useful for specific practical applications in the field of gyroscopic technology.","PeriodicalId":37674,"journal":{"name":"Cybernetics and Physics","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139199761","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}

引用次数: 0

Pseudogeometric version of the traveling salesman problem: application in quantum physics models and a heuristic variant of point placement 旅行推销员问题的伪几何版本：量子物理模型中的应用和点放置的启发式变体

Cybernetics and Physics Pub Date : 2023-11-30 DOI: 10.35470/2226-4116-2023-12-3-194-200

Boris Melnikov, Y. Terentyeva, D. Chaikovskii

引用次数: 0

Parameter identification of the linear discrete-time stochastic systems with unknown exogenous inputs 具有未知外生输入的线性离散时间随机系统的参数识别

Cybernetics and Physics Pub Date : 2023-11-30 DOI: 10.35470/2226-4116-2023-12-3-219-229

Yulia Tsyganova, Andrey Tsyganov

{"title":"Parameter identification of the linear discrete-time stochastic systems with unknown exogenous inputs","authors":"Yulia Tsyganova, Andrey Tsyganov","doi":"10.35470/2226-4116-2023-12-3-219-229","DOIUrl":"https://doi.org/10.35470/2226-4116-2023-12-3-219-229","url":null,"abstract":"The paper addresses a parameter identification problem for linear discrete-time stochastic systems with unknown exogenous inputs. Such systems are considered when solving practical problems related to the measurements processing in the case when it is impossible to do any assumptions about the evolution of unknown input signal or its statistical characteristics that can change over time. We consider a class of discrete time linear stochastic systems with unknown exogenous inputs, where an additional source of a priori uncertainty of the system model is introduced, namely, the unknown parameter, on the elements of which the system model matrices can depend. This formulation of the parameter identification problem under the conditions of unknown inputs and the presence of random noises describes a high degree of uncertainty of a discrete time linear stochastic system. We propose a novel solution to this problem based on the construction of a new instrumental identification criterion. Minimization of this criterion allows for evaluating the unknown system model parameters simultaneously with the estimating of the state vector and unknown exogenous inputs of the system. Numerical experiments confirm the validity and efficiency of the proposed parameter identification method.","PeriodicalId":37674,"journal":{"name":"Cybernetics and Physics","volume":"29 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139208903","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}

引用次数: 0