ISA transactions最新文献_第2页

Fixed-time switching tracking control for unmanned helicopter with multiple constraints 多约束无人直升机的定时切换跟踪控制。

IF 6.5 2区计算机科学

ISA transactions Pub Date : 2025-06-25 DOI: 10.1016/j.isatra.2025.06.017

Haibo Wang, Shuang Shi, Ziyang Zhen, Ju Jiang

{"title":"Fixed-time switching tracking control for unmanned helicopter with multiple constraints","authors":"Haibo Wang, Shuang Shi, Ziyang Zhen, Ju Jiang","doi":"10.1016/j.isatra.2025.06.017","DOIUrl":"10.1016/j.isatra.2025.06.017","url":null,"abstract":"<div><div><span>In this paper, a fixed-time switching tracking control scheme based on the fixed-time disturbance observer (FTDO) is proposed for a 6-DOF unmanned helicopter (UH) with multiple constraints and composite disturbances. The developed fixed-time controller guarantees that the system tracks the desired trajectory within a certain time, regardless of initial conditions. The multiple constraints include input saturation and time-varying output constraints. An improved fixed-time auxiliary<span> system is applied to compensate for the effects of input saturation nonlinearity. By developing a novel switching boundary protection algorithm, a switching control scheme is further designed to solve the output constraints better. An improved FTDO is developed to estimate composite disturbances containing saturation function approximation errors and </span></span>external disturbances. On this basis, a fixed-time switching back-stepping control method is employed for the position and attitude loops, which enables the UH to track the desired trajectory within the flight path constraints. The experimental results verify the effectiveness of the proposed scheme.</div></div>","PeriodicalId":14660,"journal":{"name":"ISA transactions","volume":"165 ","pages":"Pages 268-279"},"PeriodicalIF":6.5,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144510089","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

Data-driven parallel linear controllers for reference tracking in nonlinear systems 用于非线性系统参考跟踪的数据驱动并行线性控制器。

IF 6.5 2区计算机科学

ISA transactions Pub Date : 2025-06-24 DOI: 10.1016/j.isatra.2025.05.048

Yao Shi , José M. Maestre , Lei Xie , Hongye Su

引用次数: 0

Event-triggered consensus of multi-agent systems with uncertain control gain via distributed fuzzy logic observer 基于分布式模糊观测器的控制增益不确定多智能体系统的事件触发一致性。

IF 6.5 2区计算机科学

ISA transactions Pub Date : 2025-06-24 DOI: 10.1016/j.isatra.2025.06.020

Konghao Xie , Xiujuan Zhao , Shiming Chen , Zheng Zhang , Yuanshi Zheng

引用次数: 0

Fast actuator fault-tolerant control for a class of nonlinear sampled-data systems via deterministic learning 基于确定性学习的一类非线性采样数据系统执行器快速容错控制。

IF 6.5 2区计算机科学

ISA transactions Pub Date : 2025-06-23 DOI: 10.1016/j.isatra.2025.05.049

Yu Zeng, Tianrui Chen, Fukai Zhang, Cong Wang

{"title":"Fast actuator fault-tolerant control for a class of nonlinear sampled-data systems via deterministic learning","authors":"Yu Zeng, Tianrui Chen, Fukai Zhang, Cong Wang","doi":"10.1016/j.isatra.2025.05.049","DOIUrl":"10.1016/j.isatra.2025.05.049","url":null,"abstract":"<div><div>In this paper, we investigate the fast fault-tolerant control (FTC) problem based on deterministic learning approach (DLA) for a class of nonlinear sampled-data systems with actuator faults, which consist of two stages: incipient faults with small magnitudes and faults with larger magnitudes. First, a learning controller and a learning identifier are constructed. Based on DLA and the exponential stability of a class of linear time-varying (LTV) discrete-time systems, the control knowledge and the diagnosis knowledge of the actuator faults are obtained. Second, a set of controllers and a set of diagnosis estimators are constructed based on the learnt control and diagnosis knowledge. When an incipient actuator fault occurs, fast fault detection and isolation (FDI) can be achieved using the diagnosis estimators. Then, the pattern-based FTC scheme is implemented to improve the control performance. When the small fault grows to a larger one, the rapid FDI and FTC are implemented again, providing fast responses to the occurred larger fault. The advantages of the proposed method are that: (i) a simple adaptive learning controller with the filtering technique is designed, in which the exponential convergence of the tracking error and parameter estimation errors can be achieved simultaneously; (ii) the sensitivity to small actuator faults is enhanced, and the fast FTC to larger actuator faults is achieved by utilizing the learnt knowledge. Simulation results are also included to illustrate the effectiveness of these schemes.</div></div>","PeriodicalId":14660,"journal":{"name":"ISA transactions","volume":"165 ","pages":"Pages 1-14"},"PeriodicalIF":6.5,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144487537","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

Stochastic nonlinear system modelling and parametric oscillation response characteristics of gas turbines 燃气轮机随机非线性系统建模与参数振荡响应特性。

IF 6.5 2区计算机科学

ISA transactions Pub Date : 2025-06-23 DOI: 10.1016/j.isatra.2025.06.028

Xingyun Jia, Dengji Zhou

{"title":"Stochastic nonlinear system modelling and parametric oscillation response characteristics of gas turbines","authors":"Xingyun Jia, Dengji Zhou","doi":"10.1016/j.isatra.2025.06.028","DOIUrl":"10.1016/j.isatra.2025.06.028","url":null,"abstract":"<div><div><span><span>Gas turbines<span>, as highly complex thermal systems, exhibit significant nonlinearity and stochastic coupling in process control. Under closed-loop automatic speed regulation, persistent parametric oscillations may arise, posing serious threats to system reliability and safety. Aiming to reveal the stochastic response characteristics of parametric oscillations in gas turbines, this paper proposes a novel framework for analyzing the evolution law of parametric oscillation and multi-source stochastic excitations based on stochastic dynamics model, which is derived from thermodynamic equations and verified by measurement data. The internal stochastic excitation is determined by information entropy, while the form of the </span></span>stochastic process<span> of the external stochastic excitation is identified through data-driven reverse identification. The PDF evolution law of parametric oscillation is studied for different excitation forms, and the bifurcation behavior and sensitivity analysis of them are carried out. Under typical operating conditions, the </span></span>synergistic effect<span> of internal and external stochastic excitations reduces parametric oscillation amplitude by approximately 31 % compared to internal excitation alone. Moreover, the originally tri-modal distribution evolves into a unimodal pattern, revealing the transition trend of parametric oscillation behavior in gas turbines. These findings offer an effective approach to analyze parametric oscillation.</span></div></div>","PeriodicalId":14660,"journal":{"name":"ISA transactions","volume":"165 ","pages":"Pages 320-334"},"PeriodicalIF":6.5,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144577444","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

Robust predefined fixed-time formation-containment control for multiple unmanned surface vehicles with input saturation 具有输入饱和的多无人水面车辆鲁棒预定义固定时间地层遏制控制。

IF 6.5 2区计算机科学

ISA transactions Pub Date : 2025-06-23 DOI: 10.1016/j.isatra.2025.06.019

Yong Chen , Jinlong Huang , Fuxi Niu , Xunhua Dai , Haoyue Huang

{"title":"Robust predefined fixed-time formation-containment control for multiple unmanned surface vehicles with input saturation","authors":"Yong Chen , Jinlong Huang , Fuxi Niu , Xunhua Dai , Haoyue Huang","doi":"10.1016/j.isatra.2025.06.019","DOIUrl":"10.1016/j.isatra.2025.06.019","url":null,"abstract":"<div><div><span>The predefined fixed-time formation-containment (PFTFC) control problem for unmanned surface vehicles<span> (USVs) under unknown disturbances and input saturation is investigated, where the leaders form a formation configuration and the followers converge to the predefined convex hull formed by the leaders within a fixed time. To address this issue, a two-layer framework is introduced, decomposing the problem into trajectory estimation and trajectory tracking components. In the first layer, a novel fixed-time trajectory estimator is proposed for the leaders and the followers to estimate the desired trajectory. In the second layer, to eliminate the effects of unknown disturbances and input saturation, a fixed-time disturbance observer and an auxiliary system are proposed. Then combining fixed-time </span></span>Lyapunov stability<span> and integral sliding mode control, fixed-time control laws are proposed for both the leaders and the followers, respectively. Finally, a numerical simulation example is presented to illustrate the effectiveness of the method introduced in this paper.</span></div></div>","PeriodicalId":14660,"journal":{"name":"ISA transactions","volume":"165 ","pages":"Pages 241-253"},"PeriodicalIF":6.5,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144487538","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

Fixed-time observer-based saturated nonsingular terminal sliding mode controller design for an over-actuated ROV with time-varying saturation limits 时变饱和极限过驱动ROV的饱和非奇异终端滑模控制器设计。

IF 6.5 2区计算机科学

ISA transactions Pub Date : 2025-06-20 DOI: 10.1016/j.isatra.2025.06.025

Alireza Hosseinnajad, Navid Mohajer

{"title":"Fixed-time observer-based saturated nonsingular terminal sliding mode controller design for an over-actuated ROV with time-varying saturation limits","authors":"Alireza Hosseinnajad, Navid Mohajer","doi":"10.1016/j.isatra.2025.06.025","DOIUrl":"10.1016/j.isatra.2025.06.025","url":null,"abstract":"<div><div>Input saturation is critical in over-actuated systems when multiple degrees of freedom (DOF) with different levels of disturbance rejection are controlled simultaneously by a set of actuators. The current study introduces a novel saturated non-singular terminal sliding mode controller to address input saturation for an over-actuated remotely-operated vehicle (ROV). The proposed controller consists of a tuning algorithm to ensure that the control commands do not violate the time-varying saturation limits of each DOF. In addition, a fixed-time extended-state observer is designed to estimate the vehicle’s velocity along with the lumped unknown dynamics of the system. The observer is also employed as a tool to maintain the orientation of the ROV in extreme environmental conditions. The stability analysis shows that all system’s states, except for yaw angle, are globally finite-time stable and the yaw angle is globally asymptotically stable. Several sets of simulations are carried out and the results demonstrate the superiority of the proposed controller in terms of positioning accuracy, saturation compensation and transient behaviour under different environmental conditions.</div></div>","PeriodicalId":14660,"journal":{"name":"ISA transactions","volume":"165 ","pages":"Pages 98-110"},"PeriodicalIF":6.5,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144602640","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

Constraint-following control for follow-up support systems under model deviation and time delay 模型偏差和时滞下跟踪支持系统的约束跟踪控制。

IF 6.5 2区计算机科学

ISA transactions Pub Date : 2025-06-19 DOI: 10.1016/j.isatra.2025.06.015

Fangfang Dong , Zhao Liu , Xiaomin Zhao , Jiang Han , Xiaoyong Huang

引用次数: 0

Time-varying formation control for heterogeneous multi-agent systems in the presence of actuator faults and deception attacks 存在执行器故障和欺骗攻击的异构多智能体系统时变编队控制。

IF 6.5 2区计算机科学

ISA transactions Pub Date : 2025-06-19 DOI: 10.1016/j.isatra.2025.06.004

Shicheng Cao , Yanhui Yin , Wenyu Li , Zhongxin Liu , Zengqiang Chen

引用次数: 0

Hysteresis observer enhanced integral terminal sliding mode control of piezoelectric platform for precision tracking applications 基于滞回观测器的压电平台积分末端滑模控制在精密跟踪中的应用。