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On the Problem of Maximizing the Probability of Successful Passing of a Time-Limited Test 论最大化成功通过限时测试概率的问题
IF 0.6 4区 计算机科学
Automation and Remote Control Pub Date : 2024-06-26 DOI: 10.1134/S0005117924010053
A. V. Naumov, A. E. Stepanov, A. E. Ustinov
{"title":"On the Problem of Maximizing the Probability of Successful Passing of a Time-Limited Test","authors":"A. V. Naumov,&nbsp;A. E. Stepanov,&nbsp;A. E. Ustinov","doi":"10.1134/S0005117924010053","DOIUrl":"10.1134/S0005117924010053","url":null,"abstract":"<p>The problem of finding the optimal sequence of performing a set of tasks in a time-limited test is considered. That is, a task group is allocated for mandatory initial execution in the test, the remaining tasks are performed during the remaining time until the end of the test. For each correctly completed task of the test, the subject is awarded a certain number of points. The proposed criterion is the probability that the total number of points scored for the test exceeds a certain level, which is a fixed parameter, while simultaneously fulfilling the time limit of the test. Random parameters are the user’s response time to each test task. The correctness of the user’s answer to the task is modeled by a random variable with a Bernoulli distribution. The resulting stochastic bilinear programming problem boils down to a deterministic integer problem of mathematical programming.</p>","PeriodicalId":55411,"journal":{"name":"Automation and Remote Control","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141526130","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
On the Determination of the Region Border Prior to the Limit Steady Modes of Electric Power Systems by the Analysis Method of the Tropical Geometry of the Power Balance Equations 论用电力平衡方程热带几何的分析方法确定电力系统极限稳定模式之前的区域边界
IF 0.6 4区 计算机科学
Automation and Remote Control Pub Date : 2024-06-26 DOI: 10.1134/S0005117924010028
M. I. Danilov, I. G. Romanenko
{"title":"On the Determination of the Region Border Prior to the Limit Steady Modes of Electric Power Systems by the Analysis Method of the Tropical Geometry of the Power Balance Equations","authors":"M. I. Danilov,&nbsp;I. G. Romanenko","doi":"10.1134/S0005117924010028","DOIUrl":"10.1134/S0005117924010028","url":null,"abstract":"<p>The analysis of the known approach (Kirshtein, B.K. and Litvinov, G.L., <i>Autom</i>. <i>Remote</i> <i>Control</i>, 2014, vol. 75, no. 10, pp. 1802–1813.) in which tropical geometry over complex multifields of active power balances is used to estimate the region of existence of the electric power system mode. Its limitations are shown and a new approach is proposed, a criterion is also represented for determining the boundary that precedes the violation of the stability of the energy system due to the restructuring of the tropical set of solutions. The developed approach allows to determine the approach of the power system mode to the limit by the known parameters of the lines and the dynamics of changes of the nodes voltage modules and the nodes load.</p>","PeriodicalId":55411,"journal":{"name":"Automation and Remote Control","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141526131","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Inserting a Maximum-Mass Spacecraft into a Target Orbit Using a Limited-Thrust Engine with Releasing the Separable Part of Its Launch Vehicle into the Earth’s Atmosphere 使用有限推力发动机将最大质量航天器送入目标轨道并将运载火箭的可分离部分释放到地球大气层中
IF 0.6 4区 计算机科学
Automation and Remote Control Pub Date : 2024-06-26 DOI: 10.1134/S000511792401003X
I. S. Grigoriev, A. I. Proskuryakov
{"title":"Inserting a Maximum-Mass Spacecraft into a Target Orbit Using a Limited-Thrust Engine with Releasing the Separable Part of Its Launch Vehicle into the Earth’s Atmosphere","authors":"I. S. Grigoriev,&nbsp;A. I. Proskuryakov","doi":"10.1134/S000511792401003X","DOIUrl":"10.1134/S000511792401003X","url":null,"abstract":"<p>Space debris is an urgent problem of our time. This paper considers the idea of reducing near-Earth space debris by releasing the spent additional fuel tank (AFT) and the booster’s central block (CB) into the Earth’s atmosphere. The spacecraft transfer from a reference circular orbit of an artificial Earth satellite to a target elliptical orbit is optimized. The transition maneuvers are carried out using a booster with a high limited-thrust engine and the AFT. The second zonal harmonic of the Earth’s gravitational field is taken into account. The optimal control problem is solved based on Pontryagin’s maximum principle. Bulky derivatives are calculated using a specially developed numerical-analytical differentiation technique. The Pontryagin extremals obtained below are the next step in implementing the problem hierarchy methodology.</p>","PeriodicalId":55411,"journal":{"name":"Automation and Remote Control","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141508845","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Output Stabilization of Lurie-Type Nonlinear Systems in a Given Set 给定集合中 Lurie 型非线性系统的输出稳定
IF 0.6 4区 计算机科学
Automation and Remote Control Pub Date : 2024-06-26 DOI: 10.1134/S0005117924010065
B. H. Nguyen
{"title":"Output Stabilization of Lurie-Type Nonlinear Systems in a Given Set","authors":"B. H. Nguyen","doi":"10.1134/S0005117924010065","DOIUrl":"10.1134/S0005117924010065","url":null,"abstract":"<p>This paper considers the problem of stabilizing the output variables of a Lurie-type nonlinear system in a given set at any time instant. A special output transformation is used to reduce the original constrained problem to that of analyzing the input-to-state stability of a new extended system without constraints. For this system, nonlinear control laws are obtained using the technique of linear matrix inequalities. Examples are given to illustrate the effectiveness of the method proposed and confirm the theoretical conclusions.</p>","PeriodicalId":55411,"journal":{"name":"Automation and Remote Control","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141529836","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Adaptive Control Algorithm for Unstable Vertical Plasma Position in Tokamak 托卡马克中不稳定垂直等离子体位置的自适应控制算法
IF 0.6 4区 计算机科学
Automation and Remote Control Pub Date : 2024-03-21 DOI: 10.1134/S0005117923120044
Yu. V. Mitrishkin, S. L. Ivanova, K. S. Mukhtarov
{"title":"Adaptive Control Algorithm for Unstable Vertical Plasma Position in Tokamak","authors":"Yu. V. Mitrishkin,&nbsp;S. L. Ivanova,&nbsp;K. S. Mukhtarov","doi":"10.1134/S0005117923120044","DOIUrl":"10.1134/S0005117923120044","url":null,"abstract":"<p>The problem considered includes the development and modeling of an adaptive control algorithm for unstable vertical plasma positioning in a vertically elongated tokamak. At each iteration, a new PID controller is automatically synthesized for the evolving plasma model identified using the least squares method. The parameters of the feedback controller were computed based on the desired placement of the poles of the closed-loop control system in the left half-plane of the complex plane. The initial control system model utilized was a robust system synthesized using Quantitative Feedback Theory (QFT). The system was simulated on a real-time digital test bed (https://www.ipu.ru/plasma/about).</p>","PeriodicalId":55411,"journal":{"name":"Automation and Remote Control","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140201196","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Probabilistic Assessment of a Pentapeptide Composition Influence on Its Stability 五肽成分对其稳定性影响的概率评估
IF 0.6 4区 计算机科学
Automation and Remote Control Pub Date : 2024-03-21 DOI: 10.1134/S0005117923120032
A. I. Mikhalskii, J. A. Novoseltseva, A. A. Anashkina, A. N. Nekrasov
{"title":"Probabilistic Assessment of a Pentapeptide Composition Influence on Its Stability","authors":"A. I. Mikhalskii,&nbsp;J. A. Novoseltseva,&nbsp;A. A. Anashkina,&nbsp;A. N. Nekrasov","doi":"10.1134/S0005117923120032","DOIUrl":"10.1134/S0005117923120032","url":null,"abstract":"<p>The influence of the arrangement of amino acid residues in a pentapeptide on its stability is being studied. A forecast of pentapeptide stability is made using the gradient boosting method, which allows one to evaluate the influence of each feature on the stability of the pentapeptide. Combinations of amino acid arrangements in the pentapeptide have been identified that make a significant contribution to its stability. It has been shown that the use of such combinations reduces the amount of data required to obtain a reliable prediction of pentapeptide stability.</p>","PeriodicalId":55411,"journal":{"name":"Automation and Remote Control","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140201154","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Optimization of Group Incentive Schemes 优化集团激励计划
IF 0.6 4区 计算机科学
Automation and Remote Control Pub Date : 2024-03-21 DOI: 10.1134/S0005117923120020
V. N. Burkov, I. V. Burkova, A. R. Kashenkov
{"title":"Optimization of Group Incentive Schemes","authors":"V. N. Burkov,&nbsp;I. V. Burkova,&nbsp;A. R. Kashenkov","doi":"10.1134/S0005117923120020","DOIUrl":"10.1134/S0005117923120020","url":null,"abstract":"<p>This paper considers the problem of motivating the reduction of project duration. The duration cuts of project works and the corresponding costs are given. A group incentive scheme is used to compensate for the costs. In this scheme, all works are partitioned into groups and a unified incentive scheme is applied for each group. Two types of unified incentive schemes are studied for groups, namely, linear and jump ones. The problem is to partition all project works into groups and choose an appropriate incentive scheme for each group by minimizing the total incentive fund. Solution algorithms are proposed based on determining the shortest path in the network. Special cases are also analyzed (partition with the minimum number of groups and partition with the maximum number of groups).</p>","PeriodicalId":55411,"journal":{"name":"Automation and Remote Control","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140201081","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
An Attracting Cycle in a Coupled Mechanical System with Phase Shifts in Subsystem Oscillations 子系统振荡相移耦合机械系统中的吸引循环
IF 0.6 4区 计算机科学
Automation and Remote Control Pub Date : 2024-03-21 DOI: 10.1134/S0005117923120068
V. N. Tkhai
{"title":"An Attracting Cycle in a Coupled Mechanical System with Phase Shifts in Subsystem Oscillations","authors":"V. N. Tkhai","doi":"10.1134/S0005117923120068","DOIUrl":"10.1134/S0005117923120068","url":null,"abstract":"<p>This paper considers the set of reversible mechanical systems with single-period oscillations and individual phase shifts in them. The problem of aggregating a coupled system with an attracting cycle is solved. The approach developed below is to choose a leader (control) system that acts on the other (follower) systems through one-way coupling control: in an aggregated system, there are no links between follower systems. Universal coupling controls are used. Particular attention is paid to conservative systems. Possible scenarios for the operation of the aggregated system are presented.</p>","PeriodicalId":55411,"journal":{"name":"Automation and Remote Control","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140201165","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Structural Spectral Methods for Solving Continuous Lyapunov Equations 求解连续 Lyapunov 方程的结构谱方法
IF 0.6 4区 计算机科学
Automation and Remote Control Pub Date : 2024-03-21 DOI: 10.1134/S0005117923120081
I. B. Yadykin, I. A. Galyaev
{"title":"Structural Spectral Methods for Solving Continuous Lyapunov Equations","authors":"I. B. Yadykin,&nbsp;I. A. Galyaev","doi":"10.1134/S0005117923120081","DOIUrl":"10.1134/S0005117923120081","url":null,"abstract":"<p>For linear multivariable continuous stationary stable control systems with a simple spectrum, presented in the form of a canonical diagonal form, controllability and observability forms, a method was developed and analytical formulas for spectral decompositions of gramians in the form of various Xiao matrices were obtained. A method and algorithm for calculating generalized Xiao matrices in the form of the Hadamard product for multiply connected continuous linear systems with many inputs and many outputs have been developed. This allows us to calculate the elements of the corresponding controllability and observability gramians in the form of products of the corresponding elements of the multiplier matrices and a matrix that is the sum of all possible products of the numerator matrices of the matrix transfer function of the system. New results are obtained in the form of spectral and singular decompositions of the inverse gramians of controllability and observability. This makes it possible to obtain invariant decompositions of energy functionals and formulate new criteria for the stability of linear systems taking into account the nonlinear effects of mode interaction.</p>","PeriodicalId":55411,"journal":{"name":"Automation and Remote Control","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140201174","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Comparison of Distribution Procedures in Blended Finance 混合融资的分配程序比较
IF 0.6 4区 计算机科学
Automation and Remote Control Pub Date : 2024-03-21 DOI: 10.1134/S0005117923120056
A. V. Shchepkin
{"title":"Comparison of Distribution Procedures in Blended Finance","authors":"A. V. Shchepkin","doi":"10.1134/S0005117923120056","DOIUrl":"10.1134/S0005117923120056","url":null,"abstract":"<p>This paper is devoted to the blended (joint) finance mechanism of a megaproject consisting of several projects. One part of the megaproject budget comes from the megaproject manager and the other part from project contractors. When distributing this budget, the megaproject manager considers information about the amount of the contractor’s internal funds allocated to project implementation. Project contractors seek to get more funds from the megaproject manager; in turn, the megaproject manager is interested in attracting more funds from project contractors. To achieve this goal, the megaproject manager applies different procedures to distribute the budget. Project contractors use the information reported to the megaproject manager to increase the funds allocated to them. Straight and reverse priority distribution procedures in the blended finance mechanism are analyzed. A distribution procedure is determined that stimulates project contractors to allocate more of their internal funds to the project in a Nash equilibrium.</p>","PeriodicalId":55411,"journal":{"name":"Automation and Remote Control","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140201005","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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