European Journal of Control最新文献_第10页

Delayed feedback implementation of decentralized derivative-dependent control of large-scale systems with input delays and disturbed measurements 具有输入延迟和干扰测量的大规模系统的分散导数依赖控制的延迟反馈实施

IF 2.5 3区计算机科学

European Journal of Control Pub Date : 2024-07-08 DOI: 10.1016/j.ejcon.2024.101079

Jin Zhang , Hui Zhang , Emilia Fridman

{"title":"Delayed feedback implementation of decentralized derivative-dependent control of large-scale systems with input delays and disturbed measurements","authors":"Jin Zhang , Hui Zhang , Emilia Fridman","doi":"10.1016/j.ejcon.2024.101079","DOIUrl":"10.1016/j.ejcon.2024.101079","url":null,"abstract":"<div><p>We study decentralized derivative-dependent control of large-scale <span><math><mi>n</mi></math></span>th-order systems with input delays via delayed feedback implementation. The unavailable derivatives can be approximated by finite differences giving rise to a time-delayed feedback. In the centralized case, an efficient simple linear matrix inequalities (LMIs)-based method for designing of such static output-feedback and its sampled-data implementation was recently suggested. In the present paper, we extend this design to large-scale systems in the presence of input delays and disturbed measurements. Under the assumption of the stabilizability of the system with small enough input delays and small enough interactions by a state-feedback that depends on the output and its derivatives, a delayed static output-feedback that stabilizes the system is presented by using the current and past disturbed measurements. To compensate the errors due to the input delays, we add the appropriate terms to the corresponding Lyapunov–Krasovskii functional that lead to LMIs conditions. The efficient bounds on the delays preserving that the resulting system is input-to-state stable (ISS) are found by verifying the LMIs. In addition, we employ the vector Lyapunov functional method that may allow larger couplings compared with the existing method. Finally, the effectiveness of the proposed methods is illustrated by numerical examples.</p></div>","PeriodicalId":50489,"journal":{"name":"European Journal of Control","volume":"79 ","pages":"Article 101079"},"PeriodicalIF":2.5,"publicationDate":"2024-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141630160","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}

引用次数: 0

Event-triggered H∞-fault-tolerant consistency control for multi-agent systems 多代理系统的事件触发 H∞ 容错一致性控制

IF 2.5 3区计算机科学

European Journal of Control Pub Date : 2024-07-05 DOI: 10.1016/j.ejcon.2024.101083

Meng Zhou , Haicheng Li , Jing Wang , Tarek Raïssi

{"title":"Event-triggered H∞-fault-tolerant consistency control for multi-agent systems","authors":"Meng Zhou , Haicheng Li , Jing Wang , Tarek Raïssi","doi":"10.1016/j.ejcon.2024.101083","DOIUrl":"10.1016/j.ejcon.2024.101083","url":null,"abstract":"<div><p>This paper investigates the issue of active fault-tolerant control for multi-agent systems using an event-triggered mechanism, aiming to achieve state-consistency control under a leader–follower framework. The proposed control protocol consists of two main components: leader input estimation and fault tolerant controller design under an event-triggered mechanism. Firstly, a leader–follower error system is constructed, where the leader’s input is considered as a supplementary vector for the system state, resulting in an augmented error system. Then, a distributed state observer is designed for this augmented error system to transform the leader’s input estimation problem into an augmented state estimation issue. Furthermore, an event-triggered mechanism is designed to optimize network communication resources by updating the control law only when specific triggered conditions are met. Next, taking into account the errors introduced by the distributed observer and event-triggered mechanism, the problem of determining the state error feedback gain matrix is transformed into a linear matrix inequality problem using <span><math><msub><mrow><mi>H</mi></mrow><mrow><mi>∞</mi></mrow></msub></math></span> robustness design and Lyapunov stability analysis methods. Finally, the effectiveness of this theoretical framework is validated through a practical example involving several VTOLs.</p></div>","PeriodicalId":50489,"journal":{"name":"European Journal of Control","volume":"79 ","pages":"Article 101083"},"PeriodicalIF":2.5,"publicationDate":"2024-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141637728","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}

引用次数: 0

Stochastic maximum principle for optimal control problems with mixed delays and noisy observations 具有混合延迟和噪声观测的最优控制问题的随机最大原则

IF 2.5 3区计算机科学

European Journal of Control Pub Date : 2024-07-02 DOI: 10.1016/j.ejcon.2024.101073

Heping Ma , Yu Shi

引用次数: 0

Introducing a new nonlinear approach to model heat exchangers designed for control engineering applications 引入新的非线性方法，为控制工程应用设计的热交换器建模

IF 2.5 3区计算机科学

European Journal of Control Pub Date : 2024-07-02 DOI: 10.1016/j.ejcon.2024.101072

Yannick Fürst, Stefan Brandt, Martin Kriegel

引用次数: 0

Output null controllability for linear time-invariant structured discrete-time systems: A graph theoretic condition 线性时不变结构离散时间系统的输出无效可控性：图论条件

IF 2.5 3区计算机科学

European Journal of Control Pub Date : 2024-06-29 DOI: 10.1016/j.ejcon.2024.101077

Jacob van der Woude , Christian Commault , Taha Boukhobza

引用次数: 0

The Indirect Bang-Singular Algorithm (IBSA) for singular control problems with state-inequality constraints 带状态不平等约束的奇异控制问题的间接 Bang-Singular 算法 (IBSA)

IF 2.5 3区计算机科学

European Journal of Control Pub Date : 2024-06-29 DOI: 10.1016/j.ejcon.2024.101071

Amin Jafarimoghaddam, Manuel Soler

{"title":"The Indirect Bang-Singular Algorithm (IBSA) for singular control problems with state-inequality constraints","authors":"Amin Jafarimoghaddam, Manuel Soler","doi":"10.1016/j.ejcon.2024.101071","DOIUrl":"https://doi.org/10.1016/j.ejcon.2024.101071","url":null,"abstract":"<div><p>In this study, we present the Indirect Bang-Singular Algorithm (IBSA), a straightforward computational framework developed to solve a wide range of Singular Optimal Control Problems (SOCP) with state-inequality constraints. The algorithm is a type of arc-classification technique which reformulates the SOCP as a nonlinear programming problem over the switching times, and possibly some other parameters such as the co-states’ initial values at the entry time to a singular interval. We derive the singular control feedback using the Pontryagin’s maximum principle and analyze the possibility of an interval where multiple controls are simultaneously singular. Furthermore, we incorporate the state-inequality constraints using the direct-adjoining method. Owing to the linear property of the co-state dynamics, the co-state variables and consequently, the singular controls are computed automatically using MATLAB’s symbolic platform. The nonlinear programming is constructed in a manner to circumvent the challenges posed by state-inequality constraints in more intricate scenarios involving singular controls expressed in terms of incomplete state-feedback functions. We also present several theorems that are integral to devising a straightforward computational approach for solving SOCPs. To assess the effectiveness of the proposed algorithm, we solve the following novel problems: (1) time–fuel-optimal commercial aircraft cruise flight in a vertical plane (<em>i.e.</em>, with state-inequality constraint, a scalar singular control, and wind shear effects), and (2) the free-routing time–fuel-optimal commercial aircraft flight in a vertical plane (<em>i.e.</em>, with state-inequality constraint, a dual-entry singular control, and wind shear effects). Notably, the optimality of the graphed results has been carefully inspected through first and second-order optimality conditions.</p></div>","PeriodicalId":50489,"journal":{"name":"European Journal of Control","volume":"79 ","pages":"Article 101071"},"PeriodicalIF":2.5,"publicationDate":"2024-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141606313","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}

引用次数: 0

Exponential stability of system with time delay based on matrix-refined weighted functions 基于矩阵精炼加权函数的时延系统指数稳定性

IF 2.5 3区计算机科学

European Journal of Control Pub Date : 2024-06-29 DOI: 10.1016/j.ejcon.2024.101076

Xiao Ge , Zixuan Wang , Siu-Long Lei , Seakweng Vong

引用次数: 0

Novel criteria for exponential stability in mean square of stochastic delay differential equations with Markovian switching 马尔可夫切换随机延迟微分方程均方差指数稳定性的新标准

IF 2.5 3区计算机科学

European Journal of Control Pub Date : 2024-06-28 DOI: 10.1016/j.ejcon.2024.101074

Ky Quan Tran , Pham Huu Anh Ngoc

引用次数: 0

Resilient leaderless and leader–follower consensus over random networks through ℓ-hop communication 通过ℓ-hop通信在随机网络上达成有弹性的无领导者和领导者-追随者共识

IF 2.5 3区计算机科学

European Journal of Control Pub Date : 2024-06-26 DOI: 10.1016/j.ejcon.2024.101075

Yilun Shang

引用次数: 0

Frequency-adaptive odd-harmonic repetitive control scheme for three-phase shunt active power filters 三相并联有源电力滤波器的频率自适应奇次谐波重复控制方案

IF 2.5 3区计算机科学

European Journal of Control Pub Date : 2024-06-22 DOI: 10.1016/j.ejcon.2024.101078

Feng Gao, Zhifeng Bai

{"title":"Frequency-adaptive odd-harmonic repetitive control scheme for three-phase shunt active power filters","authors":"Feng Gao, Zhifeng Bai","doi":"10.1016/j.ejcon.2024.101078","DOIUrl":"https://doi.org/10.1016/j.ejcon.2024.101078","url":null,"abstract":"<div><p>Repetitive control (RC), which can track the periodic input or suppress the periodic disturbance with a zero steady-state error, is a promising control strategy for shunt active power filters (SAPF). However, the conventional RC (CRC) scheme will suffer a severe performance degradation caused by the grid frequency variations. In this article, a frequency-adaptive odd-harmonic repetitive control scheme with a single and fixed sampling rate is proposed for SAPF to deal with grid frequency variations and provide fast transient response for RC system. The frequency-adaptability of proposed repetitive control scheme can be implemented by updating the coefficients of the approximate expression for the delay unit in repetitive controller. The FIR filter based on Lagrange linear interpolation is used to transform the multirate repetitive control system into single-rate repetitive control system to address the problems caused by the multirate repetitive control system. Moreover, a fractional-order linear compensator with a simple structure is designed to compensate the magnitude and phase of the system accurately. Compared with other classical repetitive control strategies, the proposed repetitive control scheme can provide a better adaptation to the steady-state deviation and dynamic variation of grid frequency and ensure the control performance of SAPF system. Simulation and experimental results verify the effectiveness of the proposed control scheme.</p></div>","PeriodicalId":50489,"journal":{"name":"European Journal of Control","volume":"79 ","pages":"Article 101078"},"PeriodicalIF":2.5,"publicationDate":"2024-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141487238","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}

引用次数: 0