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On the Use of the Nelder-Mead Simplex Method in Control Design and Systems Theory 论Nelder-Mead单纯形法在控制设计和系统理论中的应用
IF 19.2 1区 计算机科学 Q1 AUTOMATION & CONTROL SYSTEMS Pub Date : 2026-01-30 DOI: 10.1109/JAS.2025.125759
Laura Menini;Corrado Possieri;Antonio Tornambe
The Nelder-Mead simplex method is a well-known algorithm enabling the minimization of functions that are not available in closed-form and that need not be differentiable or convex. Furthermore, it is particularly parsimonious on the number of function evaluations, thus making it preferable to convex optimization paradigms in the case, common when dealing with control design problems, that the objective function of the optimization problem is non-differentiable, non-convex, and its closed-form is not available or difficult to be computed analytically. The main goal of this paper is to show how the joint use of the Nelder-Mead simplex method and the Morrison algorithm can be successfully used to solve relevant and challenging control problems that cannot be easily solved using analytic methods. In particular, it is shown how the problems of strong stabilization, static output feedback stabilization, and design of robust controllers having fixed structure can be framed as optimization problems, which, in turn, can be efficiently solved by coupling the two above mentioned algorithms. The performance of this procedure is compared with state-of-the-art techniques on dozens of static output feedback benchmark case studies, and its effectiveness is demonstrated by several examples.
Nelder-Mead单纯形法是一种著名的算法,它可以最小化非封闭形式的函数,这些函数不必是可微的或凸的。此外,它在函数评估的数量上特别节省,因此在处理控制设计问题时常见的情况下,优化问题的目标函数不可微,非凸,其封闭形式不可用或难以解析计算时,它优于凸优化范式。本文的主要目的是展示如何联合使用Nelder-Mead单纯形法和Morrison算法可以成功地用于解决相关的和具有挑战性的控制问题,这些问题无法使用解析方法轻松解决。特别是,本文展示了强镇定问题、静态输出反馈镇定问题和具有固定结构的鲁棒控制器设计问题如何被框定为优化问题,而优化问题又可以通过耦合上述两种算法来有效地解决。在数十个静态输出反馈基准案例研究中,将该方法的性能与最新技术进行了比较,并通过几个实例证明了其有效性。
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引用次数: 0
Dual Channel Graph Convolutional Networks via Personalized PageRank 基于个性化PageRank的双通道图卷积网络
IF 19.2 1区 计算机科学 Q1 AUTOMATION & CONTROL SYSTEMS Pub Date : 2026-01-30 DOI: 10.1109/JAS.2025.125492
Longlong Lin;Xin Luo
Dear Editor, This letter presents a node feature similarity preserving graph convolutional framework PD2G. Graph neural networks (GNNs) have garnered significant attention for their efficacy in learning graph representations across diverse real-world applications. They adeptly explore graph structure and node features, employing aggregation and transformation mechanisms within neighborhoods. However, some studies have indicated a trend among GNN models, which prioritize structural information over node feature information. Unfortunately, in numerous scenarios, the significance of node features remains paramount. On top of that, it is acknowledged that datasets frequently encompass noisy structural and feature components, which may not be appropriately refined for subsequent analysis. Inspired by these, we propose a novel GNN framework PD2G, a personalized PageRank (PPR) driven dual GNN, to capitalize on the rich node feature information. Specifically, our approach includes the integration of consistency loss within the feature channel to feature biases in the model. Besides, we leverage the cross-channel alignment strategy to balance information from graph structure and node features. Extensive experiments show the superiority of our solutions when contrasted with baselines.
这封信提出了一个保持节点特征相似度的图卷积框架PD2G。图神经网络(gnn)因其在不同现实世界应用中学习图表示的有效性而获得了极大的关注。他们熟练地探索图结构和节点特征,在邻域内使用聚合和转换机制。然而,一些研究表明,GNN模型有优先考虑结构信息而不是节点特征信息的趋势。不幸的是,在许多情况下,节点特性的重要性仍然是至高无上的。最重要的是,人们承认数据集经常包含嘈杂的结构和特征组件,这些组件可能无法为后续分析进行适当的细化。受此启发,我们提出了一种新的GNN框架PD2G,即个性化PageRank (PPR)驱动的双GNN,以利用丰富的节点特征信息。具体来说,我们的方法包括将特征通道内的一致性损失集成到模型中的特征偏差。此外,我们利用跨通道对齐策略来平衡来自图结构和节点特征的信息。大量的实验表明,与基线相比,我们的解决方案具有优越性。
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引用次数: 0
A Novel Distributed Controller Design for Robust Global Coordination of MASs with Heterogeneous Saturation 非均匀饱和质量鲁棒全局协调的分布式控制器设计
IF 19.2 1区 计算机科学 Q1 AUTOMATION & CONTROL SYSTEMS Pub Date : 2026-01-30 DOI: 10.1109/JAS.2025.125663
Xiaoling Wang;Shengnan Zhu
Dear Editor, This letter addresses the challenge of achieving robust global coordination in multi-agent systems (MASs) subject to heterogeneous actuator saturation and additive input disturbances. We develop a novel distributed control framework that strategically integrates a redesigned saturation function to handle the nonlinear actuator constraint and a high-gain feedback mechanism for effective disturbance rejection. With this novel method, by carefully selecting both constant and time-varying saturation parameters in the redesigned saturation function and the high-gain parameter, global coordination can be achieved decoupled with the initial state of each agent and the communication topology of the MAS. Numerical examples demonstrate the effectiveness of the theoretical results.
这封信解决了在多智能体系统(MASs)中实现鲁棒全局协调的挑战,该系统受到异质执行器饱和和附加输入干扰的影响。我们开发了一种新的分布式控制框架,该框架战略性地集成了重新设计的饱和函数来处理非线性执行器约束和高增益反馈机制来有效抑制干扰。该方法通过在重新设计的饱和函数和高增益参数中仔细选择恒定和时变的饱和参数,实现了与各智能体初始状态和MAS通信拓扑解耦的全局协调。数值算例验证了理论结果的有效性。
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引用次数: 0
Increasing the Response Speed Without Redesigning the System: A Reference Input Scheduling Approach 在不重新设计系统的情况下提高响应速度:一种参考输入调度方法
IF 19.2 1区 计算机科学 Q1 AUTOMATION & CONTROL SYSTEMS Pub Date : 2026-01-30 DOI: 10.1109/JAS.2026.125813
Zongli Lin
We observe that the response speed of a linear time-invariant system to a step reference input depends not only on the system parameters but also on the magnitude of the step input. Based on this observation, we demonstrate a method to schedule the magnitude of the reference input to achieve a faster response. We will start out with a step input with a higher magnitude for a higher response speed and reduce the magnitude to the intended level as the output approaches it. We hope this observation will provide additional insight into how a linear time-invariant system responds to a step input and stimulate the full development of this reference input scheduling method for increasing the response speed without redesigning the system.
我们观察到线性定常系统对阶跃参考输入的响应速度不仅与系统参数有关,还与阶跃输入的大小有关。基于这一观察,我们演示了一种方法来调度参考输入的大小以实现更快的响应。为了获得更高的响应速度,我们将从一个具有更高幅度的阶跃输入开始,并在输出接近预期水平时将幅度减小到预期水平。我们希望这一观察将为线性定常系统如何响应阶跃输入提供额外的见解,并刺激这种参考输入调度方法的全面发展,以提高响应速度而无需重新设计系统。
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引用次数: 0
Novel Finite-Time Adaptive Fuzzy Fault-Tolerant Control for Fractional-Order Nonlinear Systems and Its Applications 分数阶非线性系统有限时间自适应模糊容错控制及其应用
IF 19.2 1区 计算机科学 Q1 AUTOMATION & CONTROL SYSTEMS Pub Date : 2026-01-30 DOI: 10.1109/JAS.2025.125852
Xingxing You;Songyi Dian;Bin Guo;Quan Xiao;Yuqi Zhu;Kai Liu
To address the finite-time tracking control problem for fractional-order nonlinear systems (FONSs) with actuator faults and external disturbance, a novel strategy of the finite-time adaptive fuzzy fault-tolerant controller is presented in this paper by utilizing the finite-time stability theory and fractional-order dynamic surface control scheme combined with backstepping method. A new lemma is developed for analyzing the finite-time stability of FONSs in terms of fractional differential inequality, which modifies some existing results. Fuzzy logic systems are adopted to identify unknown nonlinear characteristics in FONS. In order to compensate for the influence of unknown external disturbance and estimation error for fuzzy logic systems, an auxiliary function is employed to estimate the upper bound of parameters online. Furthermore, a global coordinate transformation is first introduced initially to decouple the fractional-order dynamic system of a specific class of underactuated single-link flexible manipulator systems, thereby transforming it into lower triangular systems. Simulation analyses and experimental results verify the feasibility and effectiveness of finite-time tracking control algorithm.
针对具有执行器故障和外部干扰的分数阶非线性系统的有限时间跟踪控制问题,利用有限时间稳定性理论和分数阶动态面控制方案结合反演方法,提出了一种新的有限时间自适应模糊容错控制器策略。给出了用分数阶微分不等式分析fss有限时稳定性的一个新引理,修正了已有的一些结果。采用模糊逻辑系统对FONS中的未知非线性特性进行辨识。为了补偿未知外部干扰和估计误差对模糊逻辑系统的影响,采用辅助函数在线估计参数的上界。在此基础上,首先引入全局坐标变换对一类欠驱动单连杆柔性机械臂系统的分数阶动力学系统进行解耦,将其转化为下三角系统。仿真分析和实验结果验证了有限时间跟踪控制算法的可行性和有效性。
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引用次数: 0
A Modular Approach to Adaptive Manufacturing: The AGILEHAND Architecture 自适应制造的模块化方法:AGILEHAND架构
IF 19.2 1区 计算机科学 Q1 AUTOMATION & CONTROL SYSTEMS Pub Date : 2026-01-01 DOI: 10.1109/JAS.2025.125795
Mansoor Ahmed;Ruben Costa;Rui Branco;Jorge Calado;José Ferreira;Filippo Ciarapica;Francisco Fraile;Mohamed Lamine Mekhalfi
Dear Editor, This letter presents a comprehensive overview of the AGILEHAND project's technical architecture and its role in developing innovative solutions for the grading, handling, and packaging of soft, deformable products within agile and reconfigurable manufacturing lines. The letter focuses on the architectural blueprint of AGILEHAND, detailing its functional and technical specifications. It also describes the integration process of solutions, highlighting the methods used to ensure seamless interoperability and data flow across different systems. Furthermore, the letter demonstrates the application of AGILEHAND solutions through two specific scenarios, showcasing their effectiveness and adaptability. This comprehensive overview underscores the significance of the AGILEHAND architecture in enhancing manufacturing efficiency and flexibility.
这封信全面概述了AGILEHAND项目的技术架构及其在开发创新解决方案中的作用,这些解决方案用于在敏捷和可重构的生产线中对柔软、可变形产品进行分级、处理和包装。这封信的重点是AGILEHAND的架构蓝图,详细介绍了它的功能和技术规范。它还描述了解决方案的集成过程,重点介绍了用于确保跨不同系统的无缝互操作性和数据流的方法。此外,这封信通过两个具体的场景演示了AGILEHAND解决方案的应用,展示了它们的有效性和适应性。这一全面的概述强调了AGILEHAND架构在提高制造效率和灵活性方面的重要性。
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引用次数: 0
Determination of the Number of Zeros of Quasi-Polynomials via Function Curves 用函数曲线确定拟多项式的零点数
IF 19.2 1区 计算机科学 Q1 AUTOMATION & CONTROL SYSTEMS Pub Date : 2026-01-01 DOI: 10.1109/JAS.2026.125756
Honghai Wang
Dear Editor, The distribution of eigenvalues, i.e., the zeros of the characteristic functions of linear time-invariant (LTI) systems, is of great significance for analyzing and synthesizing the performance of these systems. The research on the distribution of eigenvalues mainly focuses on the determination of the number of zeros of polynomials or quasi-polynomials in a fixed region of the entire complex plane, where the determination of the distribution of zeros of quasi-polynomials has always been a challenging issue [1], [2]. Recently, several results on the determination of the number of zeros of a class of quasi-polynomials in the open right-half complex plane were derived in [3], where the quasi-polynomials can be neutral type with complex (real) coefficients.
特征值的分布,即线性时不变(LTI)系统特征函数的零点,对于分析和综合这些系统的性能具有重要意义。特征值分布的研究主要集中在整个复平面的固定区域内多项式或拟多项式的零个数的确定,其中拟多项式的零分布的确定一直是一个具有挑战性的问题[1],[2]。最近,在[3]中得到了确定开放右半复平面上一类拟多项式的零点数的几个结果,其中拟多项式可以是具有复(实)系数的中立型。
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引用次数: 0
AoI Violation Constrained Control Cost Optimization for Delay-Sensitive Industrial IoT 时延敏感型工业物联网AoI违例约束控制成本优化
IF 19.2 1区 计算机科学 Q1 AUTOMATION & CONTROL SYSTEMS Pub Date : 2025-12-31 DOI: 10.1109/JAS.2024.125076
Jiawei Su;Zhixin Liu;Yaping Li;Yazhou Yuan;Kai Ma
Dear Editor, The industrial internet of things (IIoT) integrates communications and controls into a cohesive system within the framework of Industry 5.0, where time delay critically impairs system performance. Especially, the introduction of wireless networks results in more severe induced delays than wired networks, owing to the greater complexity of factors affecting reliable state updates. From the perspective of control requirements, the state update process depends on the successful rate and real-time performance of information transmission. A low successful transmission rate causes data backlog and delays state updates, while a high rate reduces delay but requires more communication resources. Nevertheless, the control center must rely on previously updated state information before the next sampling period. Therefore, simply increasing the transmission rate may not necessarily enhance long-term system performance.
工业物联网(IIoT)将通信和控制集成到工业5.0框架内的一个内聚系统中,其中时间延迟严重损害了系统性能。特别是,由于影响可靠状态更新的因素更加复杂,无线网络的引入导致了比有线网络更严重的诱导延迟。从控制需求的角度来看,状态更新过程取决于信息传输的成功率和实时性。传输成功率低会导致数据积压和状态更新延迟,而传输成功率高会减少延迟,但需要更多的通信资源。然而,在下一个采样周期之前,控制中心必须依赖先前更新的状态信息。因此,单纯提高传输速率不一定能提高系统的长期性能。
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引用次数: 0
Non-Fragile Filtering for Discrete-Time Networked Systems Subject to Fading Measurements: An Encryption and Decryption Scheme 受衰落测量影响的离散网络系统的非脆弱滤波:一种加解密方案
IF 19.2 1区 计算机科学 Q1 AUTOMATION & CONTROL SYSTEMS Pub Date : 2025-12-31 DOI: 10.1109/JAS.2025.125402
Jinliang Liu;Jiahui Tang;Lijuan Zha;Engang Tian
Dear Editor, This letter deals with the non-fragile filtering problem for the discrete-time networked system subject to fading measurements and potential risk of information leakage. To ensure the system security enhancement, an encryption-decryption scheme is employed to protect the privacy of the transmitted signal via network, under which the real transmitted data is invisible to eavesdroppers. Ultimately, a numerical example is provided to assess the accuracy and efficacy of the derived approaches.
这封信讨论的是离散时间网络系统在衰落测量和潜在信息泄露风险下的非脆弱滤波问题。为了保证系统的安全性增强,采用加解密方案保护网络传输信号的隐私性,在该方案下,真实传输的数据对窃听者不可见。最后,通过数值算例验证了所提方法的准确性和有效性。
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引用次数: 0
Behavior-Preserving Top-Down Construction of Cross-Organization Emergency Response Processes 行为保持的自顶向下跨组织应急响应流程构建
IF 19.2 1区 计算机科学 Q1 AUTOMATION & CONTROL SYSTEMS Pub Date : 2025-12-31 DOI: 10.1109/JAS.2025.125537
Cong Liu;Huiling Li;Qingtian Zeng;Qi Mo;MengChu Zhou;Long Cheng;Shangce Gao
When an emergency happens, one of the most important tasks is to perform effective emergency disposal. To this end, emergency organizations need to collaborate to accomplish missions that exceed the capacity of any single organization. Typically, an emergency disposal is structured as a set of collaborative processes, referred to as cross-organization emergency response processes (CERPs). To deliver better emergency services, the initial step is to construct a high-quality CERP model. This paper introduces a top-down CERP model construction approach to tackle one of the most challenging issues in this area: How to construct a CERP model such that each organization can design, change, and modify their own processes without disturbing the overall collaboration and correctness of CERP. The proposed top-down CERP model construction approach involves the following stages: 1) Cross-organization public process model construction; 2) Intra-organization public process model generation; 3) Behavior-preserving intra-organization private process model construction; and 4) Organization-specific CERP model construction. A case study on cross-organization fire emergency response is conducted to demonstrate the applicability and effectiveness of the proposed approach.
当突发事件发生时,进行有效的应急处置是最重要的任务之一。为此目的,应急组织需要合作,以完成超出任何一个组织能力的任务。通常,应急处置是由一组协作过程构成的,称为跨组织应急响应过程(cerp)。为了提供更好的应急服务,第一步是建立一个高质量的应急应急计划模型。本文介绍了一种自顶向下的CERP模型构建方法,以解决该领域最具挑战性的问题之一:如何构建一个CERP模型,使每个组织都可以设计、更改和修改自己的过程,而不会干扰CERP的整体协作和正确性。本文提出的自顶向下的CERP模型构建方法包括以下几个阶段:1)跨组织公共过程模型构建;2)组织内部公共过程模型生成;3)行为保持型组织内部私有流程模型构建;4)基于组织的CERP模型构建。以跨组织火灾应急响应为例,验证了该方法的适用性和有效性。
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引用次数: 0
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Ieee-Caa Journal of Automatica Sinica
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