ISA transactions最新文献

英文中文

Interpretable fault diagnosis for variable-speed machinery via adaptive ridge extraction and causal learning 基于自适应脊提取和因果学习的变速机械可解释故障诊断。

IF 6.5 2区计算机科学 Q1 AUTOMATION & CONTROL SYSTEMS

ISA transactions

Pub Date : 2026-01-01 DOI: 10.1016/j.isatra.2025.11.032

Xuanshi Chen, Manyi Wang, Meijun Wang, Yilin Jiang

In most industrial processes, rotating machinery often operates under time-varying speed conditions, making it difficult to extract fault-related features using conventional diagnostic techniques. To address this challenge, a novel diagnostic framework is developed that integrates high-resolution time-frequency analysis with interpretable causal learning. First, a synchrosqueezed continuous wavelet transform (SSQ-CWT) is employed to generate a clean time-frequency representation, upon which a specialized Adaptive Rotational Frequency Ridge Extraction (ARFRE) algorithm operates to accurately estimate the instantaneous speed without a tachometer. Subsequently, features extracted from the resulting order spectrum are screened by a Causal Forest to identify a subset with true causal impact on the fault state. Finally, an interpretable decision tree is constructed using this causally validated feature set. The framework was comprehensively validated on two public benchmarks (SQV, Ottawa) and a proprietary industrial dataset. The results demonstrate superior diagnostic performance, achieving accuracies of 98.49 %, 100.00 %, and 97.44 % respectively, and consistently outperforming baseline methods. This work presents a robust, interpretable, and tachometer-free solution for fault diagnosis in variable-speed machinery, with significant potential for practical industrial application.

在大多数工业过程中，旋转机械经常在时变转速条件下运行，这使得使用传统的诊断技术很难提取与故障相关的特征。为了应对这一挑战，开发了一种新的诊断框架，该框架将高分辨率时频分析与可解释的因果学习相结合。首先，采用同步压缩连续小波变换（SSQ-CWT）生成清晰的时频表示，在此基础上，采用专门的自适应旋转频率脊提取（ARFRE）算法在不使用转速计的情况下准确估计瞬时速度。随后，从结果阶谱中提取的特征通过因果森林进行筛选，以识别对故障状态具有真正因果影响的子集。最后，利用这个因果验证的特征集构造了一个可解释的决策树。该框架在两个公共基准（SQV，渥太华）和一个专有的工业数据集上进行了全面验证。结果显示出优越的诊断性能，分别达到98.49 %，100.00 %和97.44 %的准确率，并始终优于基线方法。这项工作提出了一个强大的、可解释的、无转速表的解决方案，用于变速机械的故障诊断，具有实际工业应用的巨大潜力。

{"title":"Interpretable fault diagnosis for variable-speed machinery via adaptive ridge extraction and causal learning","authors":"Xuanshi Chen, Manyi Wang, Meijun Wang, Yilin Jiang","doi":"10.1016/j.isatra.2025.11.032","DOIUrl":"10.1016/j.isatra.2025.11.032","url":null,"abstract":"<div><div>In most industrial processes, rotating machinery often operates under time-varying speed conditions, making it difficult to extract fault-related features using conventional diagnostic techniques. To address this challenge, a novel diagnostic framework is developed that integrates high-resolution time-frequency analysis with interpretable causal learning. First, a synchrosqueezed continuous wavelet transform (SSQ-CWT) is employed to generate a clean time-frequency representation, upon which a specialized Adaptive Rotational Frequency Ridge Extraction (ARFRE) algorithm operates to accurately estimate the instantaneous speed without a tachometer. Subsequently, features extracted from the resulting order spectrum are screened by a Causal Forest to identify a subset with true causal impact on the fault state. Finally, an interpretable decision tree is constructed using this causally validated feature set. The framework was comprehensively validated on two public benchmarks (SQV, Ottawa) and a proprietary industrial dataset. The results demonstrate superior diagnostic performance, achieving accuracies of 98.49 %, 100.00 %, and 97.44 % respectively, and consistently outperforming baseline methods. This work presents a robust, interpretable, and tachometer-free solution for fault diagnosis in variable-speed machinery, with significant potential for practical industrial application.</div></div>","PeriodicalId":14660,"journal":{"name":"ISA transactions","volume":"168 ","pages":"Pages 686-703"},"PeriodicalIF":6.5,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145644017","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

Global fixed-time prescribed performance control with fixed-time distributed state observer for non-cooperative target tracking using multiple unmanned surface vehicles 基于固定时间分布式状态观测器的多水面无人飞行器非合作目标跟踪全局固定时间预定性能控制。

IF 6.5 2区计算机科学 Q1 AUTOMATION & CONTROL SYSTEMS

ISA transactions

Pub Date : 2026-01-01 DOI: 10.1016/j.isatra.2025.11.033

Haiyan Tong, Yingying Hu

This study addresses the cooperative tracking control problem for multiple unmanned surface vehicles (USVs) tasked with pursuing non-cooperative target in complex marine environments. Initially, a novel fixed-time distributed state observer (FDSO), independent of the system’s initial conditions, is developed to estimate state information of the non-cooperative target. Subsequently, a global fixed-time prescribed performance control strategy is proposed by introducing a novel exponential fixed-time shift function (EFSF), effectively eliminating traditional restrictions on error initial conditions inherent. Furthermore, a fixed-time dynamic compensation (FDC) mechanism is originally formulated to mitigate the impact of external disturbances on system performance. Through rigorous Lyapunov stability analysis, the practically fixed-time stability of the closed-loop system is theoretically proven, with theoretical guarantees derived for tracking error convergence to a predefined compact set within fixed time intervals. Extensive simulation results validate the proposed approach in terms of convergence speed, tracking accuracy, and robustness to disturbances.

研究了复杂海洋环境下多水面无人潜航器（usv）非合作目标的协同跟踪控制问题。首先，提出了一种独立于系统初始条件的固定时间分布式状态观测器（FDSO）来估计非合作目标的状态信息。随后，通过引入指数定时移位函数（EFSF），提出了一种全局定时预定性能控制策略，有效地消除了传统的误差初始条件限制。此外，还提出了一种固定时间动态补偿机制，以减轻外部干扰对系统性能的影响。通过严格的Lyapunov稳定性分析，从理论上证明了闭环系统的实际定时稳定性，并给出了跟踪误差在固定时间间隔内收敛到预定紧集的理论保证。大量的仿真结果验证了该方法在收敛速度、跟踪精度和对干扰的鲁棒性方面的有效性。

{"title":"Global fixed-time prescribed performance control with fixed-time distributed state observer for non-cooperative target tracking using multiple unmanned surface vehicles","authors":"Haiyan Tong, Yingying Hu","doi":"10.1016/j.isatra.2025.11.033","DOIUrl":"10.1016/j.isatra.2025.11.033","url":null,"abstract":"<div><div>This study addresses the cooperative tracking control problem for multiple unmanned surface vehicles (USVs) tasked with pursuing non-cooperative target in complex marine environments. Initially, a novel fixed-time distributed state observer (FDSO), independent of the system’s initial conditions, is developed to estimate state information of the non-cooperative target. Subsequently, a global fixed-time prescribed performance control strategy is proposed by introducing a novel exponential fixed-time shift function (EFSF), effectively eliminating traditional restrictions on error initial conditions inherent. Furthermore, a fixed-time dynamic compensation (FDC) mechanism is originally formulated to mitigate the impact of external disturbances on system performance. Through rigorous Lyapunov stability analysis, the practically fixed-time stability of the closed-loop system is theoretically proven, with theoretical guarantees derived for tracking error convergence to a predefined compact set within fixed time intervals. Extensive simulation results validate the proposed approach in terms of convergence speed, tracking accuracy, and robustness to disturbances.</div></div>","PeriodicalId":14660,"journal":{"name":"ISA transactions","volume":"168 ","pages":"Pages 117-133"},"PeriodicalIF":6.5,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145644086","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

Prescribed time performance control of underwater vehicles based on time-varying disturbance 基于时变扰动的水下航行器定时性能控制。

IF 6.5 2区计算机科学 Q1 AUTOMATION & CONTROL SYSTEMS

ISA transactions

Pub Date : 2026-01-01 DOI: 10.1016/j.isatra.2025.12.005

Lingyu Li , Hongde Qin , Hai Huang , Qiang Liu , Xiaojia Li

To enhance the robustness and control efficiency of underwater robot systems, this paper presents a controller that integrates model predictive control (MPC) with a prescribed time control, and introduces a novel time controller capable of more intuitively and effectively determining the convergence time of system performance. A radial basis function neural network (RBFNN) coupled with an evaluation neural network has been engineered to bolster the system's capacity to address ocean current disturbances. The introduction of a new error function ensures the effective realization of the neural network's stability. By incorporating a MPC outer loop controller with system state parameters, the system state can be transitioned smoothly and kept within bounds, aligning with the actual performance characteristics of underwater vehicles. The system's stability is verified through theoretical analysis and further substantiated through simulation experiments. Additionally, the performance enhancement of the robot system achieved by the proposed algorithm is emphasised through a comparative analysis with the traditional PID control algorithm. Ultimately, in light of the complex, time-varying external disturbance environment delineated in this paper, a sea trial experiment is conducted to ascertain the effectiveness of the proposed algorithm.

为了提高水下机器人系统的鲁棒性和控制效率，本文提出了一种将模型预测控制（MPC）与规定时间控制相结合的控制器，并引入了一种能够更直观有效地确定系统性能收敛时间的新型时间控制器。径向基函数神经网络（RBFNN）与评估神经网络相结合，增强了系统处理洋流干扰的能力。引入新的误差函数，保证了神经网络稳定性的有效实现。通过引入带系统状态参数的MPC外环控制器，使系统状态平稳过渡并保持在一定范围内，符合潜航器的实际性能特点。通过理论分析验证了系统的稳定性，并通过仿真实验进一步验证了系统的稳定性。此外，通过与传统PID控制算法的对比分析，强调了该算法对机器人系统性能的增强。最后，针对本文描述的复杂时变外部干扰环境，进行了海试实验，验证了所提算法的有效性。

{"title":"Prescribed time performance control of underwater vehicles based on time-varying disturbance","authors":"Lingyu Li , Hongde Qin , Hai Huang , Qiang Liu , Xiaojia Li","doi":"10.1016/j.isatra.2025.12.005","DOIUrl":"10.1016/j.isatra.2025.12.005","url":null,"abstract":"<div><div>To enhance the robustness and control efficiency of underwater robot systems, this paper presents a controller that integrates model predictive control (MPC) with a prescribed time control, and introduces a novel time controller capable of more intuitively and effectively determining the convergence time of system performance. A radial basis function neural network (RBFNN) coupled with an evaluation neural network has been engineered to bolster the system's capacity to address ocean current disturbances. The introduction of a new error function ensures the effective realization of the neural network's stability. By incorporating a MPC outer loop controller with system state parameters, the system state can be transitioned smoothly and kept within bounds, aligning with the actual performance characteristics of underwater vehicles. The system's stability is verified through theoretical analysis and further substantiated through simulation experiments. Additionally, the performance enhancement of the robot system achieved by the proposed algorithm is emphasised through a comparative analysis with the traditional PID control algorithm. Ultimately, in light of the complex, time-varying external disturbance environment delineated in this paper, a sea trial experiment is conducted to ascertain the effectiveness of the proposed algorithm.</div></div>","PeriodicalId":14660,"journal":{"name":"ISA transactions","volume":"168 ","pages":"Pages 561-573"},"PeriodicalIF":6.5,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145746246","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

Design of zonotopic space interpolation-based smooth variable structure filter for systems with unknown but bounded noise 未知有界噪声系统的分区插值光滑变结构滤波器设计。

IF 6.5 2区计算机科学 Q1 AUTOMATION & CONTROL SYSTEMS

ISA transactions

Pub Date : 2026-01-01 DOI: 10.1016/j.isatra.2025.11.045

Lei-Ting Huo, Zi-Yun Wang, Yan Wang

In this paper, a zonotopic space interpolation-based smooth variable structure filter (ZSI-SVSF) is proposed for state estimation under unknown but bounded noise. The approach combines zonotopic contraction to determine a state confidence envelope with cubic spline interpolation to construct a smooth boundary layer. A curvature-driven mechanism then directs the smooth variable structure filter for iterative updates, adaptively computing the estimation gain and yielding a smooth trajectory. Unlike conventional filters, ZSI-SVSF avoids covariance computations, improving efficiency, reducing conservativeness, and mitigating chattering. Its applicability extends from linear systems to nonlinear measurements via Jacobian linearization. Validation through linear simulation with a hybrid motion model and nonlinear UAV tracking under a coordinated turn model confirms improved accuracy, adaptability, and low computational cost.

提出了一种基于分区空间插值的光滑变结构滤波器（ZSI-SVSF），用于未知有界噪声下的状态估计。该方法结合分位收缩确定状态置信度包络和三次样条插值构造光滑边界层。然后，曲率驱动机制指导光滑变结构滤波器进行迭代更新，自适应计算估计增益并产生光滑轨迹。与传统滤波器不同，ZSI-SVSF避免了协方差计算，提高了效率，降低了保守性，减轻了抖振。它的适用性从线性系统扩展到通过雅可比线性化的非线性测量。通过混合运动模型和协调转弯模型下的非线性无人机跟踪的线性仿真验证，该方法提高了精度、适应性和较低的计算成本。

引用次数: 0

Prescribed performance collision-free control for bearing-constrained unmanned aerial vehicle 轴承约束无人机规定性能无碰撞控制。

IF 6.5 2区计算机科学 Q1 AUTOMATION & CONTROL SYSTEMS

ISA transactions

Pub Date : 2026-01-01 DOI: 10.1016/j.isatra.2025.11.037

Tao Zhang , Dengxiu Yu , Kang Hao Cheong , Zhen Wang

This paper addresses the challenging problem of enabling bearing-constrained unmanned aerial vehicles to navigate through environments with multiple obstacles while strictly satisfying predefined convergence time and steady-state accuracy requirements. To meet the stringent payload and cost constraints of small-scale UAVs, we propose a lightweight local perception and localization framework that relies solely on angular (bearing) measurements, thereby minimizing sensor hardware requirements. An integrated obstacle-avoidance assistance mechanism is developed to ensure safe traversal in cluttered environments under these limited sensing conditions, without appreciably degrading the prescribed temporal and accuracy performance. Furthermore, a non-singular prescribed-performance control strategy is designed that seamlessly incorporates obstacle avoidance while guaranteeing user-specified convergence time and ultimate tracking precision. Finally, the effectiveness of the proposed approach is validated through multiple simulation examples.

本文解决了一个具有挑战性的问题，即在严格满足预定收敛时间和稳态精度要求的情况下，使受轴承约束的无人机在具有多个障碍物的环境中导航。为了满足小型无人机严格的有效载荷和成本限制，我们提出了一种轻量级的局部感知和定位框架，该框架仅依赖于角度（方位）测量，从而最大限度地减少了传感器硬件要求。开发了一种集成的避障辅助机制，以确保在这些有限的传感条件下在混乱环境中安全穿越，而不会明显降低规定的时间和精度性能。在保证用户指定的收敛时间和最终跟踪精度的前提下，设计了一种无缝融合避障的非奇异性能控制策略。最后，通过多个仿真实例验证了所提方法的有效性。

引用次数: 0

Stability analysis of stochastic networked control systems under deception attacks: A novel self-triggered impulsive framework 欺骗攻击下随机网络控制系统的稳定性分析：一种新的自触发脉冲框架。

IF 6.5 2区计算机科学 Q1 AUTOMATION & CONTROL SYSTEMS

ISA transactions

Pub Date : 2026-01-01 DOI: 10.1016/j.isatra.2025.11.013

Xiaotao Zhou , Jieqing Tan , Yangang Yao , Anguo Zhang

This paper addresses the exponential stability problem of stochastic networked control systems (SNCSs) subjected to both state-dependent and state-independent deception attacks. A novel self-triggered impulsive framework is proposed, comprising two strategies: self-triggered impulsive control (STIC) and self-triggered delayed impulsive control (STDIC), tailored for systems without and with impulse delays, respectively. In contrast to existing STIC approaches, the proposed methods impose no restrictions on inter-impulse intervals, eliminate the need for auxiliary comparison systems, and avoid complex implicit formulations. These advantages render the schemes more flexible and amenable to practical implementation. Moreover, unlike event-triggered impulsive control (ETIC), the STIC and STDIC strategies do not require continuous or periodic event detection while effectively excluding Zeno behavior. Sufficient conditions are established to ensure exponential stability under both types of deception attacks, explicitly revealing the interplay among triggering parameters, time delays, attack probabilities, and impulse gain. Finally, simulation results validate the effectiveness of the proposed methods.

研究了随机网络控制系统（sncs）在状态依赖和状态独立欺骗攻击下的指数稳定性问题。提出了一种新的自触发脉冲控制框架，包括两种策略：自触发脉冲控制（STIC）和自触发延迟脉冲控制（STDIC），分别适用于无脉冲延迟和有脉冲延迟的系统。与现有的STIC方法相比，所提出的方法对脉冲间隔没有限制，不需要辅助比较系统，并且避免了复杂的隐式公式。这些优点使方案更加灵活，便于实际实施。此外，与事件触发脉冲控制（ETIC）不同，STIC和STDIC策略不需要连续或周期性的事件检测，同时有效地排除了芝诺行为。建立了在两种欺骗攻击下保证指数稳定性的充分条件，明确揭示了触发参数、时延、攻击概率和脉冲增益之间的相互作用。最后，仿真结果验证了所提方法的有效性。

{"title":"Stability analysis of stochastic networked control systems under deception attacks: A novel self-triggered impulsive framework","authors":"Xiaotao Zhou , Jieqing Tan , Yangang Yao , Anguo Zhang","doi":"10.1016/j.isatra.2025.11.013","DOIUrl":"10.1016/j.isatra.2025.11.013","url":null,"abstract":"<div><div>This paper addresses the exponential stability problem of stochastic networked control systems (SNCSs) subjected to both state-dependent and state-independent deception attacks. A novel self-triggered impulsive framework is proposed, comprising two strategies: self-triggered impulsive control (STIC) and self-triggered delayed impulsive control (STDIC), tailored for systems without and with impulse delays, respectively. In contrast to existing STIC approaches, the proposed methods impose no restrictions on inter-impulse intervals, eliminate the need for auxiliary comparison systems, and avoid complex implicit formulations. These advantages render the schemes more flexible and amenable to practical implementation. Moreover, unlike event-triggered impulsive control (ETIC), the STIC and STDIC strategies do not require continuous or periodic event detection while effectively excluding Zeno behavior. Sufficient conditions are established to ensure exponential stability under both types of deception attacks, explicitly revealing the interplay among triggering parameters, time delays, attack probabilities, and impulse gain. Finally, simulation results validate the effectiveness of the proposed methods.</div></div>","PeriodicalId":14660,"journal":{"name":"ISA transactions","volume":"168 ","pages":"Pages 319-329"},"PeriodicalIF":6.5,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145535131","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

Profile-tracking-based gain-varying backstepping guidance law for maneuvering target interception with input saturation 输入饱和机动目标拦截中基于轮廓跟踪的增益变反步制导律。

IF 6.5 2区计算机科学 Q1 AUTOMATION & CONTROL SYSTEMS

ISA transactions

Pub Date : 2026-01-01 DOI: 10.1016/j.isatra.2025.11.009

Jingliang Sun , Mengmeng Wang , Zihan Wang , Chen Chen

In this paper, a profile-tracking-based gain-varying backstepping guidance law is developed to address the impact angle constrained guidance issue for the maneuvering target with input saturation. A new range-elapsed-based polynomial function is formulated as the reference line-of-sight angle profile to guide the missile to intercept the target with a specified angle. The profile can be analytically determined without tedious numerical optimization. Then, a novel gain-varying finite-time constrained backstepping guidance law is developed for tracking the designed profile. The tracking-error-based varying gain is designed to counteract the disturbance effects of target maneuvers. The stability of the closed-loop system is theoretically guaranteed. Finally, comparative simulations verify the effectiveness and advantages of the proposed method.

针对输入饱和机动目标的冲击角约束制导问题，提出了一种基于轮廓跟踪的变增益反步制导律。提出了一种新的基于距离超越的多项式函数作为参考视距角轮廓，引导导弹拦截指定角度的目标。轮廓可以解析确定，而无需繁琐的数值优化。然后，提出了一种新的变增益有限时间约束反步导引律，用于跟踪设计的轮廓。设计了基于跟踪误差的变增益来抵消目标机动的干扰效应。从理论上保证了闭环系统的稳定性。最后通过仿真对比验证了该方法的有效性和优越性。

引用次数: 0

Human-like model-free control for heat exchangers with a new form of actuator bandwidth limitation 具有执行器带宽限制新形式的换热器类人无模型控制。

IF 6.5 2区计算机科学 Q1 AUTOMATION & CONTROL SYSTEMS

ISA transactions

Pub Date : 2026-01-01 DOI: 10.1016/j.isatra.2025.10.017

Yitong Zhou , Jing Chang , Weisheng Chen

The design of control schemes for heat exchanger systems in large-scale industrial scenarios is challenged by complex dynamics and safety requirements. This paper proposes a human-like model-free control (HLMFC) scheme. The scheme is independent of model information, learning decision-making rules during manual control processes of heat exchangers from experienced operators. Exploiting the thermal equilibrium characteristic of the heat exchangers, a control efficiency factor and control interval iteration mechanism are introduced, which gradually compresses the control input to the desired value. The proposed control strategy eliminates the need for dynamic analysis, suppresses instabilities in the heat transfer process, and allows flexible adjustment of the actuator execution frequency. The bounded stability of the scheme is rigorously proven. Experimental results demonstrate that the proposed strategy achieves control objectives while flexibly allocating actuator frequencies, effectively reducing temperature fluctuations during operation.

大型工业场景中热交换器系统的控制方案设计受到复杂动力学和安全要求的挑战。提出了一种类人无模型控制（HLMFC）方案。该方案不依赖于模型信息，向经验丰富的操作人员学习换热器人工控制过程中的决策规则。利用换热器的热平衡特性，引入控制效率因子和控制区间迭代机制，将控制输入逐步压缩到期望值。所提出的控制策略消除了动态分析的需要，抑制了传热过程中的不稳定性，并允许灵活调整执行器的执行频率。严格证明了该方案的有界稳定性。实验结果表明，该策略在灵活分配执行器频率的同时达到了控制目标，有效地降低了运行过程中的温度波动。

引用次数: 0

Reduced chattering target-tracking sliding mode control for intraprocedural propofol control 术中异丙酚控制的减抖目标跟踪滑模控制。

IF 6.5 2区计算机科学 Q1 AUTOMATION & CONTROL SYSTEMS

ISA transactions

Pub Date : 2026-01-01 DOI: 10.1016/j.isatra.2025.11.005

Roberto Costa Ceccato, José Roberto Castilho Piqueira

This manuscript presents a reduced chattering sliding mode control (SMC) strategy for automatically regulating the depth of hypnosis (DoH) during general anesthesia (GA). The controller uses DoH as the controlled variable and assumes an infusion pump as the actuator. A linear model serves as an approximation in the SMC law, while a sigmoidal function is used instead of the sign function to mitigate chattering. The scheme adopts a tracking-based approach to handle induction and maintenance phases of GA. The method is evaluated through simulations with and without pain stimuli and noise, using real-patient pharmacokinetic and pharmacodynamic parameters and incorporating the dynamic behavior of the DoH monitor. Results showed no high-frequency chattering and demonstrated robust performance, suggesting that the proposed approach is promising for real-world clinical applications.

本文提出了一种减少抖振滑模控制（SMC）策略，用于在全身麻醉（GA）期间自动调节催眠深度（DoH）。控制器使用DoH作为被控变量，并假设一个输液泵作为执行器。在SMC律中，用线性模型作为近似，用s型函数代替符号函数来减轻抖振。该方案采用基于跟踪的方法处理遗传算法的诱导和维护阶段。该方法通过模拟疼痛刺激和噪音，使用真实患者的药代动力学和药效学参数，并结合DoH监测仪的动态行为来评估。结果显示，该方法无高频抖振，性能稳定，表明该方法有望用于实际临床应用。

引用次数: 0

Finite- and fixed-time privacy-preserving formation control for multiple quadrotor systems with input delay and connectivity maintenance 具有输入延迟和连接维护的多四旋翼系统有限和固定时间保密编队控制。

IF 6.5 2区计算机科学 Q1 AUTOMATION & CONTROL SYSTEMS

ISA transactions

Pub Date : 2026-01-01 DOI: 10.1016/j.isatra.2025.10.046

Ding Zhou , Ping Chen , Zhigang Cao , Chuan He , Xiaopeng Han , Yukun Niu

This paper investigates the finite- and fixed-time privacy-preserving formation control problem for multiple quadrotors with input delay and connectivity maintenance. A lightweight confidential interaction protocol based on group key agreement is first proposed to ensure secure communication among quadrotors under limited computational resources. To address the input delay, an extended Artstein’s transformation is introduced to convert the system into a delay-free form, and by integrating potential functions with finite-/fixed-time control techniques, novel formation control algorithms are developed to resolve the delay issue while preserving the initial interaction topology. Leveraging Lyapunov stability theory and bi-limit homogeneous system theory, rigorous theoretical analysis is conducted to derive sufficient conditions for finite- and fixed-time formability of the quadrotor formation system. The proposed framework systematically resolves the coupling challenges among privacy protection, time-delay compensation, and topology preservation. Numerical simulations and flight experiments are carried out to illustrate the effectiveness of the theoretical results.

研究了具有输入延迟和连通性保持的多四旋翼机有限和固定时间保密编队控制问题。为了在有限的计算资源下保证四旋翼机之间的安全通信，提出了一种基于组密钥协议的轻量级保密交互协议。为了解决输入延迟问题，引入了扩展Artstein变换将系统转换为无延迟形式，并通过将势函数与有限/固定时间控制技术相结合，开发了新的群体控制算法来解决延迟问题，同时保留了初始交互拓扑结构。利用李雅普诺夫稳定性理论和双极限齐次系统理论，进行了严格的理论分析，得到了四旋翼编队系统有限和定时成形性的充分条件。该框架系统地解决了隐私保护、时延补偿和拓扑保持之间的耦合问题。通过数值模拟和飞行实验验证了理论结果的有效性。

{"title":"Finite- and fixed-time privacy-preserving formation control for multiple quadrotor systems with input delay and connectivity maintenance","authors":"Ding Zhou , Ping Chen , Zhigang Cao , Chuan He , Xiaopeng Han , Yukun Niu","doi":"10.1016/j.isatra.2025.10.046","DOIUrl":"10.1016/j.isatra.2025.10.046","url":null,"abstract":"<div><div>This paper investigates the finite- and fixed-time privacy-preserving formation control problem for multiple quadrotors with input delay and connectivity maintenance. A lightweight confidential interaction protocol based on group key agreement is first proposed to ensure secure communication among quadrotors under limited computational resources. To address the input delay, an extended Artstein’s transformation is introduced to convert the system into a delay-free form, and by integrating potential functions with finite-/fixed-time control techniques, novel formation control algorithms are developed to resolve the delay issue while preserving the initial interaction topology. Leveraging Lyapunov stability theory and bi-limit homogeneous system theory, rigorous theoretical analysis is conducted to derive sufficient conditions for finite- and fixed-time formability of the quadrotor formation system. The proposed framework systematically resolves the coupling challenges among privacy protection, time-delay compensation, and topology preservation. Numerical simulations and flight experiments are carried out to illustrate the effectiveness of the theoretical results.</div></div>","PeriodicalId":14660,"journal":{"name":"ISA transactions","volume":"168 ","pages":"Pages 515-530"},"PeriodicalIF":6.5,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145530479","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

首页上一页

下一页尾页

类型

全部化学•材料生命科学医学物理工程技术环境•农林材料科学地球科学法学管理学化学环境科学与生态学计算机科学教育学经济学农林科学人文科学生物学数学物理与天体物理心理学综合性期刊其他工业工程理学历史学农学文学信息工程

数据库

全部 ACS Publications Elsevier ieeexplore Springer The Royal Society of Chemistry Wiley

期刊

ISA transactions

全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.

﹀