Automatica最新文献_第9页

Distributed mean-nonovershooting control of stochastic nonlinear multi-agent systems 随机非线性多智能体系统的分布均值-非超调控制

IF 4.8 2区计算机科学

Automatica Pub Date : 2025-06-03 DOI: 10.1016/j.automatica.2025.112397

Wuquan Li , Hui Wang , Lu Liu , Gang Feng

引用次数: 0

On the relationship between stochastic and deterministic energy shaping techniques for stochastic port-Hamiltonian systems via invariant measure characterization 基于不变测度表征的随机端口-哈密顿系统随机与确定性能量整形技术之间的关系

IF 4.8 2区计算机科学

Automatica Pub Date : 2025-05-30 DOI: 10.1016/j.automatica.2025.112385

Francesco Giuseppe Cordoni , Luca Di Persio , Riccardo Muradore

{"title":"On the relationship between stochastic and deterministic energy shaping techniques for stochastic port-Hamiltonian systems via invariant measure characterization","authors":"Francesco Giuseppe Cordoni , Luca Di Persio , Riccardo Muradore","doi":"10.1016/j.automatica.2025.112385","DOIUrl":"10.1016/j.automatica.2025.112385","url":null,"abstract":"<div><div>This paper derives two relevant results in the context of weak energy shaping for stochastic port-Hamiltonian systems (SPHS). Energy shaping is a technique systematically used to design feedback laws that shape the Hamiltonian of a controlled system to converge to a desired configuration under a general passivity condition. Such an approach has been recently extended to SPHS, but the resulting theory has limitations excluding relevant examples such as the additive noise case. However, it has been shown that the invariant measure of the SPHS allows the introduction of a weaker notion of convergence, hence obtaining a significant extension of the classical energy shaping theory for SPHS. In this paper, we continue investigating the weak energy shaping of SPHS, showing that the Fokker–Planck equation associated with an SPHS can be seen as the Fokker–Planck equation of an infinite-dimensional deterministic PHS. Moreover, we explicitly compute the invariant measure for a specific class of SPHS with additive noise.</div></div>","PeriodicalId":55413,"journal":{"name":"Automatica","volume":"179 ","pages":"Article 112385"},"PeriodicalIF":4.8,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144167183","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Dissipativity-based security control for switched systems with encryption/decryption under switching-Q-learning-based replay-attack detection 基于交换q -学习的重放攻击检测下带加密/解密的交换系统的耗散安全控制

IF 4.8 2区计算机科学

Automatica Pub Date : 2025-05-29 DOI: 10.1016/j.automatica.2025.112396

Lili Li , Jia Zhao , Dan Ma , Yalin Chen

{"title":"Dissipativity-based security control for switched systems with encryption/decryption under switching-Q-learning-based replay-attack detection","authors":"Lili Li , Jia Zhao , Dan Ma , Yalin Chen","doi":"10.1016/j.automatica.2025.112396","DOIUrl":"10.1016/j.automatica.2025.112396","url":null,"abstract":"<div><div>Since fixed alarm thresholds fail to distinguish whether fluctuations in switched systems (SSs) are due to replay attacks (RAs) or normal switching behaviors, we propose a security control scheme. We first develop a switching-<span><math><mi>Q</mi></math></span>-learning-based RA-detection method with time-varying encryption/decryption functions to learn a alarm threshold for identifying the causes of state fluctuations in SSs. Second, an RA-detection-based event-triggered mechanism is proposed, with data transmission arranged to shorten the asynchronous duration according to RA-detection results and the dissipativity level of SSs. Additionally, the cross supply rate and supply rate elucidate the impact of active and inactive subsystems on the energy dynamics of SSs under actual switching or RAs. Third, the RA-detection-based switching rule utilizes system state estimation alongside RA-detection results to address the issue of consecutive asynchronous switching caused by RAs. Finally, the security control scheme of SSs under the RA-detection is verified by studying collaborative dynamic positioning control for three unmanned surface vessels.</div></div>","PeriodicalId":55413,"journal":{"name":"Automatica","volume":"179 ","pages":"Article 112396"},"PeriodicalIF":4.8,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144167187","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Exponential and prescribed-time extremum seeking with unbiased convergence 具有无偏收敛的指数和规定时间极值求

IF 4.8 2区计算机科学

Automatica Pub Date : 2025-05-28 DOI: 10.1016/j.automatica.2025.112392

Cemal Tugrul Yilmaz, Mamadou Diagne, Miroslav Krstic

{"title":"Exponential and prescribed-time extremum seeking with unbiased convergence","authors":"Cemal Tugrul Yilmaz, Mamadou Diagne, Miroslav Krstic","doi":"10.1016/j.automatica.2025.112392","DOIUrl":"10.1016/j.automatica.2025.112392","url":null,"abstract":"<div><div>We present multivariable extremum seeking (ES) designs that achieve unbiased convergence of the inputs to their corresponding optima, eliminating steady-state oscillations. Two designs are introduced: one with exponential unbiased convergence (unbiased extremum seeker, uES) and the other with user-assignable prescribed-time unbiased convergence (unbiased PT extremum seeker, uPT-ES). In contrast to the conventional ES, which uses persistent sinusoids and results in steady-state oscillations around the optimum, the exponential uES employs an exponentially decaying amplitude in the perturbation signal (for achieving convergence) and an exponentially growing demodulation signal (for making the convergence unbiased). The achievement of unbiased convergence also entails employing an adaptation gain that is sufficiently large in relation to the decay rate of the perturbation amplitude. Stated concisely, the bias is eliminated by having the learning process outpace the waning of the perturbation. The other algorithm, uPT-ES, employs prescribed-time convergent/blow-up functions in place of constant amplitudes of sinusoids, and it also replaces constant-frequency sinusoids with chirp signals whose frequency grows over time. Among the convergence results in the ES literature, uPT-ES may be the strongest yet in terms of the convergence rate (prescribed-time) and accuracy (unbiased). To enhance the robustness of uES to a time-varying optimum, exponential functions are modified to keep oscillations at steady state. Stability analysis of the designs is based on a state transformation, averaging, local exponential/PT stability of the averaged system, local stability of the transformed system, and local exponential/PT stability of the original system. For numerical implementation of the developed ES schemes and comparison with previous ES designs, the problem of source seeking by a two-dimensional velocity-actuated point mass is considered.</div></div>","PeriodicalId":55413,"journal":{"name":"Automatica","volume":"179 ","pages":"Article 112392"},"PeriodicalIF":4.8,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144154337","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

A hybrid deep learning method for finite-horizon mean-field game problems 有限视界平均场博弈问题的混合深度学习方法

IF 4.8 2区计算机科学

Automatica Pub Date : 2025-05-28 DOI: 10.1016/j.automatica.2025.112384

Yu Zhang , Zhuo Jin , Jiaqin Wei , George Yin

引用次数: 0

Almost sure convergence of distributed optimization with imperfect information sharing 具有不完全信息共享的分布式优化的几乎肯定收敛性

IF 4.8 2区计算机科学

Automatica Pub Date : 2025-05-28 DOI: 10.1016/j.automatica.2025.112391

Hadi Reisizadeh , Anand Gokhale , Behrouz Touri , Soheil Mohajer

引用次数: 0

Structure identification of time delay polynomial Hammerstein models 时滞多项式Hammerstein模型的结构辨识

IF 4.8 2区计算机科学

Automatica Pub Date : 2025-05-28 DOI: 10.1016/j.automatica.2025.112386

Feng Yu, Dakuo He, Runda Jia, Zhizhong Mao

引用次数: 0

ISS-equilibrium with stability analysis for disturbed game-based impulsive systems 扰动博弈脉冲系统的iss平衡及稳定性分析

IF 4.8 2区计算机科学

Automatica Pub Date : 2025-05-28 DOI: 10.1016/j.automatica.2025.112394

Wenlu Liu , Chuandong Li , Xiaodi Li

引用次数: 0

False Noise Attack Detection for differentially-private distributed control of microgrids 微电网微分私有分布式控制的假噪声攻击检测

IF 4.8 2区计算机科学

Automatica Pub Date : 2025-05-28 DOI: 10.1016/j.automatica.2025.112387

Feng Ye , Xianghui Cao , Lin Cai , Mo-Yuen Chow

{"title":"False Noise Attack Detection for differentially-private distributed control of microgrids","authors":"Feng Ye , Xianghui Cao , Lin Cai , Mo-Yuen Chow","doi":"10.1016/j.automatica.2025.112387","DOIUrl":"10.1016/j.automatica.2025.112387","url":null,"abstract":"<div><div>Privacy preserving in distributed control is getting more attention, and differential privacy (DP) is the common tool to protect data privacy, in which additive noise is applied in the algorithm function. However, DP can be leveraged by false noise (FN) attacks because attack vectors can be disguised as artificial noise in DP. FN attacks are a concern as the stealth attacks are hard to detect. Moreover, DP in distributed control makes FN attack detection more difficult. Hence, detecting FN attacks in privacy-preserving distributed control is critical and challenging. In this paper, taking distributed energy management systems as the control object, we propose a novel peer-to-peer attack detection approach, named False Noise Attack Detection (FNAD). In FNAD, each device observes the power decisions of its neighbors based on the data from its two-hop neighbors, estimates the power decisions of its neighbors by a Kalman filter, and updates the detection index of each neighbor according to the residues of the Kalman filter at each iteration. The detection index is developed based on information entropy, without any prior knowledge of the FN attacks. If a device’s detection index is out of well-defined thresholds, its neighbors can perform a majority vote to decide whether it is malicious. We theoretically prove the detection effect of FNAD against three representative attacks in the literature and analyze the advantages of FNAD compared with the traditional methods. The effectiveness of FNAD is demonstrated by extensive simulations.</div></div>","PeriodicalId":55413,"journal":{"name":"Automatica","volume":"179 ","pages":"Article 112387"},"PeriodicalIF":4.8,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144154336","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Line zonotopes: A tool for state estimation and fault diagnosis of unbounded and descriptor systems 线共拓扑：无界和广义系统的状态估计和故障诊断工具

IF 4.8 2区计算机科学

Automatica Pub Date : 2025-05-23 DOI: 10.1016/j.automatica.2025.112380

Brenner S. Rego , Davide M. Raimondo , Guilherme V. Raffo

{"title":"Line zonotopes: A tool for state estimation and fault diagnosis of unbounded and descriptor systems","authors":"Brenner S. Rego , Davide M. Raimondo , Guilherme V. Raffo","doi":"10.1016/j.automatica.2025.112380","DOIUrl":"10.1016/j.automatica.2025.112380","url":null,"abstract":"<div><div>This paper proposes new methods for set-based state estimation and active fault diagnosis (AFD) of linear descriptor systems (LDS). Unlike intervals, ellipsoids, and zonotopes, constrained zonotopes (CZs) can directly incorporate linear static constraints on state variables – typical of descriptor systems – into their mathematical representation, leading to less conservative enclosures. However, for LDS that are unstable or not fully observable, a bounded representation cannot ensure a valid enclosure of the states over time. To address this limitation, we introduce line zonotopes, a new representation for unbounded sets that retains key properties of CZs, including polynomial time complexity reduction methods, while enabling the description of strips, hyperplanes, and the entire <span><math><mi>n</mi></math></span>-dimensional Euclidean space. This extension not only generalizes the use of CZs to unbounded settings but can also enhance set-based estimation and AFD in both stable and unstable scenarios. Additionally, we extend the AFD method for LDS from Rego et al. (2020) to operate over reachable tubes rather than solely on the reachable set at the final time of the considered horizon. This reduces conservatism in input separation and enables more accurate fault diagnosis based on the entire output sequence. The advantages of the proposed methods over existing CZ-based approaches are demonstrated through numerical examples.</div></div>","PeriodicalId":55413,"journal":{"name":"Automatica","volume":"179 ","pages":"Article 112380"},"PeriodicalIF":4.8,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144115140","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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