Systems & Control Letters最新文献

{"title":"Cooperative regulation with global dynamic compensation control mechanism for random communication link failures among multiple time-varying nonlinear agents","authors":"Zhaoxin Wang,&nbsp;Jianchang Liu","doi":"10.1016/j.sysconle.2025.106330","DOIUrl":"10.1016/j.sysconle.2025.106330","url":null,"abstract":"<div><div>This paper proposes a cooperative regulation strategy with the global dynamic compensation control mechanism for random communication link failures among multiple agents to address asymptotic consensus issues in time-varying nonlinear multi-agent systems. The distributed dynamic stochastic bridging compensator is established with certain elements that can be flexibly adjusted depending on different scenarios. The stochastic bridging error variables are developed, where the bridging compensator can be viewed as a bridging intermediary for asymptotically tracking both the leader and the follower. These bridging error variables continuously monitor the disparity in information states between the compensator and the agent. The global dynamic compensation control mechanism is created based on the dynamic equations of the proposed bridging error variables. The cooperative regulation strategy, consisting of the distributed stochastic bridging controller generated by the above created control mechanism, is designed and applied to achieve coordination consensus. A novel stability analysis method is formulated based on the bridging error variables to demonstrate the effectiveness of the proposed cooperative regulation strategy. Finally, the feasibility of the strategy is further validated through the presentation of specific cases and conducting simulation experiments.</div></div>","PeriodicalId":49450,"journal":{"name":"Systems & Control Letters","volume":"208 ","pages":"Article 106330"},"PeriodicalIF":2.5,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145840075","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Stubborn observers for infinite-dimensional systems in abstract form with application to parabolic PDEs with boundary measurement","authors":"Salim Zekraoui,&nbsp;Daniele Astolfi,&nbsp;Vincent Andrieu","doi":"10.1016/j.sysconle.2025.106323","DOIUrl":"10.1016/j.sysconle.2025.106323","url":null,"abstract":"<div><div>Building upon the recently developed “stubborn” observer construction for finite-dimensional systems, we present a novel observer structure for abstract linear infinite-dimensional systems. A key feature of our design is the use of nonlinear output injection terms with an adjustable dynamical saturation function. This approach not only ensures the input-to-state stability (ISS) of the error system in the presence of measurement disturbances but also demonstrates significant resilience to impulsive noise. We illustrate the effectiveness of our method by applying it to a class of parabolic partial differential equations (PDEs).</div></div>","PeriodicalId":49450,"journal":{"name":"Systems & Control Letters","volume":"208 ","pages":"Article 106323"},"PeriodicalIF":2.5,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145840178","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Exponential utility maximization with delay in a continuous time Gaussian framework","authors":"Yan Dolinsky","doi":"10.1016/j.sysconle.2025.106270","DOIUrl":"10.1016/j.sysconle.2025.106270","url":null,"abstract":"<div><div>In this work we study the continuous time exponential utility maximization problem in the framework of an investor who is informed about the risky asset’s price changes with a delay. This leads to a non-Markovian stochastic control problem. In the case where the risky asset is given by a Gaussian process (with some additional properties) we establish a solution for the optimal control and the corresponding value. Our approach is purely probabilistic and is based on the theory for Radon–Nikodym derivatives of Gaussian measures developed by Shepp (1966) and Hitsuda (1968).</div></div>","PeriodicalId":49450,"journal":{"name":"Systems & Control Letters","volume":"206 ","pages":"Article 106270"},"PeriodicalIF":2.5,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145339834","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"LQ optimal control for infinite-dimensional passive systems","authors":"Anthony Hastir,&nbsp;Birgit Jacob","doi":"10.1016/j.sysconle.2025.106279","DOIUrl":"10.1016/j.sysconle.2025.106279","url":null,"abstract":"<div><div>We study the Linear-Quadratic optimal control problem for a general class of infinite-dimensional passive systems, allowing for unbounded input and output operators. We show that under mild assumptions, the finite cost condition is always satisfied. Moreover, we give an explicit bound on the norm of the optimal cost operator. In the case where the system is energy preserving, the unique optimal control is given together with the corresponding optimal cost operator. In this case, we derive an explicit solution to an adapted operator Riccati equation. We apply our results to boundary control systems, first-order port-Hamiltonian systems and an Euler–Bernoulli beam with shear force control.</div></div>","PeriodicalId":49450,"journal":{"name":"Systems & Control Letters","volume":"206 ","pages":"Article 106279"},"PeriodicalIF":2.5,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145467990","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Symmetry structures in linear physical systems","authors":"Arjan van der Schaft ,&nbsp;Rodolphe Sepulchre ,&nbsp;Thomas Chaffey","doi":"10.1016/j.sysconle.2025.106287","DOIUrl":"10.1016/j.sysconle.2025.106287","url":null,"abstract":"<div><div>Physical systems with symmetry structures arise abundantly in applications, often admit scalable control laws, and are important building blocks in synthesis problems. The present paper focusses on linear reciprocal systems and input–output Hamiltonian systems. Their characterization is studied from an input–output, as well as from a state space point of view. Geometrically both are seen to define Lagrangian subspaces with corresponding generating functionals. Furthermore, the relation of reciprocity and input–output Hamiltonian structure with time reversibility is analyzed.</div></div>","PeriodicalId":49450,"journal":{"name":"Systems & Control Letters","volume":"206 ","pages":"Article 106287"},"PeriodicalIF":2.5,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145520544","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Switching pursuit strategies for multi-pursuer single-evader games","authors":"Marco Casini,&nbsp;Andrea Garulli","doi":"10.1016/j.sysconle.2025.106284","DOIUrl":"10.1016/j.sysconle.2025.106284","url":null,"abstract":"<div><div>This paper introduces a new family of pursuit strategies for multi-pursuer single-evader games in a planar environment. The main idea is to exploit conditions under which capture of the evader in minimum time can be achieved by only two pursuers. The first contribution is to characterize such conditions in terms of the agent positions. Then, new pursuit strategies are proposed in which the multi-pursuer team aims to meet such conditions, switching to a two-pursuer game once they are satisfied. The benefit of this approach is twofold. First, it is shown that naive strategies that are in general unsuccessful can be turned into winning strategies by switching to the appropriate two-pursuer game. Second, the switching mechanism significantly enhances the performance of existing pursuit algorithms, like those based on Voronoi partitions. This is demonstrated by means of extensive numerical simulations.</div></div>","PeriodicalId":49450,"journal":{"name":"Systems & Control Letters","volume":"206 ","pages":"Article 106284"},"PeriodicalIF":2.5,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145467987","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Finite-time stability for distribution dependent SDEs","authors":"Yong Ren ,&nbsp;Xueping Wang ,&nbsp;Yin Wu","doi":"10.1016/j.sysconle.2025.106267","DOIUrl":"10.1016/j.sysconle.2025.106267","url":null,"abstract":"<div><div>In this paper, we aim to discuss the finite-time stability theorem for distribution dependent stochastic differential equations (DDSDEs, in short). The criteria on finite time attractiveness in probability and settling time function of DDSDEs are established by means of Lyapunov functional method. An example is given to show the theoretical results.</div></div>","PeriodicalId":49450,"journal":{"name":"Systems & Control Letters","volume":"206 ","pages":"Article 106267"},"PeriodicalIF":2.5,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145339833","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"GMFG critical nodes for control affine systems with exponentiated costs","authors":"Peter E. Caines ,&nbsp;Minyi Huang ,&nbsp;Rinel Foguen-Tchuendom ,&nbsp;Shuang Gao","doi":"10.1016/j.sysconle.2025.106280","DOIUrl":"10.1016/j.sysconle.2025.106280","url":null,"abstract":"<div><div>Graphon Mean Field Games (GMFGs) (Caines and Huang, 2021) constitute generalizations of Mean Field Games (MFGs) for which the agents form subpopulations associated with the nodes of large graphs, where infinite cardinality graph node and edge limits are considered with limit graphons <span><math><mrow><mi>g</mi><mrow><mo>(</mo><mi>α</mi><mo>,</mo><mi>β</mi><mo>)</mo></mrow></mrow></math></span>, <span><math><mrow><mrow><mo>(</mo><mi>α</mi><mo>,</mo><mi>β</mi><mo>)</mo></mrow><mo>∈</mo><mrow><mo>[</mo><mn>0</mn><mo>,</mo><mn>1</mn><mo>]</mo></mrow><mo>×</mo><mrow><mo>[</mo><mn>0</mn><mo>,</mo><mn>1</mn><mo>]</mo></mrow><mo>.</mo></mrow></math></span> The work in (Foguen-Tchuendom et al., (2021, 2022) [10],[11]) analyzed the stationarity of Nash equilibrium values with respect to node location for large populations of non-cooperative agents with linear dynamics on large graphs together with their limit graphons. The analysis in (Foguen-Tchuendom et al.,(2021, 2022) [10],[11]) is extended in this investigation to agent systems lying in the class of control affine non-linear systems (see Isidori (1985)). Specifically, control affine GMFG systems in an infinite network are treated where (i) at each node <span><math><mrow><mi>α</mi><mo>∈</mo><mrow><mo>[</mo><mn>0</mn><mo>,</mo><mn>1</mn><mo>]</mo></mrow></mrow></math></span> the drift of each generic agent system is affine in the control function, and (ii) the running costs at each node <span><math><mi>α</mi></math></span> are exponentiated negative inverse quadratic functions of the difference between a generic state and the graphon <span><math><mi>g</mi></math></span> weighted local mean field <span><math><msup><mrow><mi>Z</mi></mrow><mrow><mi>α</mi><mo>,</mo><mi>g</mi></mrow></msup></math></span>, which involves <span><math><mrow><msub><mrow><mi>μ</mi></mrow><mrow><mi>G</mi></mrow></msub><mo>≔</mo><mrow><mo>{</mo><msup><mrow><mi>μ</mi></mrow><mrow><mi>β</mi></mrow></msup><mo>,</mo><mi>β</mi><mo>∈</mo><mrow><mo>[</mo><mn>0</mn><mo>,</mo><mn>1</mn><mo>]</mo></mrow><mo>}</mo></mrow></mrow></math></span> representing agent state distributions at different nodes. The GMFG equation system is proved to have a unique solution under a contraction condition, and the main result is that Nash equilibrium values <span><math><msup><mrow><mi>V</mi></mrow><mrow><mi>α</mi></mrow></msup></math></span> are stationary with respect to the node location <span><math><mrow><mi>α</mi><mo>∈</mo><mrow><mo>[</mo><mn>0</mn><mo>,</mo><mn>1</mn><mo>]</mo></mrow></mrow></math></span> if the corresponding graphon weighted local mean field <span><math><msup><mrow><mi>Z</mi></mrow><mrow><mi>α</mi><mo>,</mo><mi>g</mi></mrow></msup></math></span> is stationary with respect to node location; the converse also holds if the model only has cost-coupling.</div></div>","PeriodicalId":49450,"journal":{"name":"Systems & Control Letters","volume":"206 ","pages":"Article 106280"},"PeriodicalIF":2.5,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145467991","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Global exponential H∞ synchronization of multi-weighted coupled neural networks with multiple time-varying delays","authors":"Zhuo Ren,&nbsp;Yu Xue,&nbsp;Tingting Yu","doi":"10.1016/j.sysconle.2025.106282","DOIUrl":"10.1016/j.sysconle.2025.106282","url":null,"abstract":"<div><div>This paper investigates the global exponential <span><math><msub><mrow><mi>H</mi></mrow><mrow><mi>∞</mi></mrow></msub></math></span> synchronization problem for multi-weighted coupled neural networks (MWCNNs) with multiple time-varying delays. A bounded real lemma (BRL) is firstly established based on the solutions of delayed MWCNNs, which can be used to derive that delayed MWCNNs reach global exponential <span><math><msub><mrow><mi>H</mi></mrow><mrow><mi>∞</mi></mrow></msub></math></span> synchronization. On the basis of the proposed BRL, an aperiodically intermittent controller (AIC) for delayed MWCNNs is proposed to improve synchronization performance. As no Lyapunov–Krasovskii functional (LKF) is constructed in the proposed method, the computational complexity is significantly reduced. Finally, the theoretical result is verified through a numerical example, and applied to encryption and decryption of color images.</div></div>","PeriodicalId":49450,"journal":{"name":"Systems & Control Letters","volume":"206 ","pages":"Article 106282"},"PeriodicalIF":2.5,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145467989","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A periodic event-triggered approach to distributed set-membership estimation for 2-D systems over sensor networks","authors":"Yuhan Xie ,&nbsp;Sanbo Ding ,&nbsp;Nannan Rong","doi":"10.1016/j.sysconle.2025.106283","DOIUrl":"10.1016/j.sysconle.2025.106283","url":null,"abstract":"<div><div>This paper is concerned with the event-triggered distributed set-membership estimation problem for two-dimensional (2-D) systems over resource-constrained sensor networks. Sensors exchange information through a novel 2-D periodic event-triggered mechanism (PETM). In contrast to existing results, the resulting scheme circumvents the continuous calculations by sensors in the horizontal and vertical dimensions thus it reduces the signal scheduling loss. Such mechanism takes care of resource scarcity in 2-D systems while its design is consistent with the iterative principle of 2-D signals. Meanwhile, the triggered threshold parameter is designed as an adaptive mode, which varies with the operating state of sensor networks. In order to compensate for the negative impact of periodic sampling signals on the estimator design, a set of 2-D piecewise auxiliary functions are constructed to analyse sawtooth-like constraints from a plane perspective. Incorporating recursive convex optimization algorithms, a co-design criterion is derived to determine the desired estimator gains and event-triggered weight matrices. Finally, the comparative simulation result is provided to highlight the superiority of the proposed algorithm.</div></div>","PeriodicalId":49450,"journal":{"name":"Systems & Control Letters","volume":"206 ","pages":"Article 106283"},"PeriodicalIF":2.5,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145468004","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}