{"title":"Resilient distributed dynamic event-triggered bipartite time-varying formation control for multi-agent systems with quantized communication under multiple cyber attacks","authors":"Shaoquan Wen, Lin He","doi":"10.1016/j.ejcon.2026.101465","DOIUrl":"10.1016/j.ejcon.2026.101465","url":null,"abstract":"<div><div>This paper investigates the bipartite time-varying formation control problem for multi-agent systems (MASs) under aperiodic denial-of-service (DoS) attacks and false data injection attacks (FDIAs). To address this problem, a resilient distributed dynamic event-triggered output feedback control strategy based on quantized communication is proposed. Using Lyapunov stability theory, sufficient conditions are proven for this control strategy to achieve formation tracking, and Zeno behavior is avoided. Finally, the effectiveness of the proposed method is verified through numerical simulations.</div></div>","PeriodicalId":50489,"journal":{"name":"European Journal of Control","volume":"88 ","pages":"Article 101465"},"PeriodicalIF":2.6,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146038951","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}
{"title":"Advancing active vehicle suspension control: a differential game approach with time-varying delays","authors":"Dominika Machowska , Andrzej Nowakowski","doi":"10.1016/j.ejcon.2025.101446","DOIUrl":"10.1016/j.ejcon.2025.101446","url":null,"abstract":"<div><div>The paper presents an analysis of an active car suspension model that incorporates time-varying delays in information transmission. To achieve the dual objectives of maximizing passenger safety and comfort, the paper proposes the use of game theory tools, which is a novel approach to this model. The resulting problem leads to the introduction of differential games with time-varying delays in states and strategies. The paper formulates conditions for verifying whether a given strategy profile constitutes an open-loop Nash equilibrium. The verification theorem is then used to develop a numerical algorithm to determine the Nash equilibria in a finite number of steps. The numerical simulations demonstrate the effectiveness of the game theory approach in finding a safer and more comfortable vehicle.</div></div>","PeriodicalId":50489,"journal":{"name":"European Journal of Control","volume":"88 ","pages":"Article 101446"},"PeriodicalIF":2.6,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145980921","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}
{"title":"Passivity-based control of underactuated systems with non-integrable state-dependent matched disturbances","authors":"Enrico Franco","doi":"10.1016/j.ejcon.2026.101473","DOIUrl":"10.1016/j.ejcon.2026.101473","url":null,"abstract":"<div><div>This work investigates the passivity-based control of a class of underactuated mechanical systems subject to matched disturbances that enter the dynamics through a state-dependent vector-valued function that is not integrable. The main contributions include a new passivity-based controller with a dynamic extension, designed with the port-Hamiltonian formalism, and, most importantly, a suitably defined function of the states, serving the purpose of estimating the disturbance parameters while circumventing the usual integrability assumption. A corresponding controller is designed with the Lagrangian formalism, and key differences are discussed. Numerical simulations on two examples demonstrate the effectiveness of the new controllers.</div></div>","PeriodicalId":50489,"journal":{"name":"European Journal of Control","volume":"88 ","pages":"Article 101473"},"PeriodicalIF":2.6,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147397713","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}
Mohammed Yousri Silaa , Aissa Bencherif , Oscar Barambones
{"title":"Robot arm manipulator trajectory tracking using novel sliding mode control based quick power reaching law enhanced by grey wolf optimizer","authors":"Mohammed Yousri Silaa , Aissa Bencherif , Oscar Barambones","doi":"10.1016/j.ejcon.2025.101438","DOIUrl":"10.1016/j.ejcon.2025.101438","url":null,"abstract":"<div><div>Ensuring precise trajectory tracking while minimizing chattering and maintaining robustness is a major challenge in robotic arm control. Traditional sliding mode controllers often suffer from high-frequency oscillations (chattering), which can lead to actuator wear, energy inefficiency, and system instability. To address this issue, this paper presents a novel control strategy based on a sliding mode controller with a quick power-reaching law (SMCQPRL). The proposed SMCQPRL enhances robustness, minimizes chattering, and ensures fast and accurate trajectory tracking. To validate its effectiveness, the SMCQPRL is systematically compared with conventional sliding mode control (SMC) and the super-twisting algorithm (STA), both optimized using the grey wolf optimizer (GWO). Numerical simulations show that SMCQPRL achieves RMSE values of 0.13368 and 0.1247 for <em>θ</em><sub>1</sub> and <em>θ</em><sub>2</sub>, respectively, outperforming STA (0.1813, 0.1953) and SMC (0.24505, 0.29112), while also demonstrating substantial chattering reduction and improved robustness. The stability of the SMCQPRL is rigorously established using Lyapunov theory, confirming its suitability for real-world robotic applications.</div></div>","PeriodicalId":50489,"journal":{"name":"European Journal of Control","volume":"88 ","pages":"Article 101438"},"PeriodicalIF":2.6,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145980919","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}
Huu Thien Nguyen , Ionela Prodan , Fernando A.C.C. Fontes
{"title":"Nonlinear model predictive control trajectory tracking for a fixed-wing UAV in a deep-stall and perching landing maneuver with guaranteed stability","authors":"Huu Thien Nguyen , Ionela Prodan , Fernando A.C.C. Fontes","doi":"10.1016/j.ejcon.2025.101442","DOIUrl":"10.1016/j.ejcon.2025.101442","url":null,"abstract":"<div><div>We address the planning and control problems of a fixed-wing unmanned aerial vehicle (FW UAV) in a deep-stall and perching landing maneuver. We use optimal control methods to generate a trajectory that satisfies not only the aircraft maneuver requirement but also the recursive feasibility demands of the tracking control method that we use subsequently. To track the generated trajectory, we developed a Nonlinear Model Predictive Control (NMPC) scheme. We then outline the steps to systematically derive the NMPC terminal costs and the terminal sets tailored to this problem and formally prove the stability of the NMPC tracking scheme. Simulation results for different initial conditions show the viability of the developed scheme for the deep-stall and perching landing maneuvers. Finally, we examine the relationships between airspeed, wing loading, elevator deflection angle, and flight path angle in steady flight, including deep-stall landing.</div></div>","PeriodicalId":50489,"journal":{"name":"European Journal of Control","volume":"88 ","pages":"Article 101442"},"PeriodicalIF":2.6,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145980916","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}
{"title":"Command filter-based adaptive fixed-time prescribed performance control for nonlinear systems without initial condition constraints","authors":"Xiaoxuan Jiao , Ji Zhao , Ming Chen , Libing Wu","doi":"10.1016/j.ejcon.2026.101463","DOIUrl":"10.1016/j.ejcon.2026.101463","url":null,"abstract":"<div><div>This article proposes a novel fixed-time tracking control strategy for strict-feedback nonlinear systems with prescribed performance constraints, which specifically removes the strict restrictions on the initial states. First, a new mapping function is introduced for the first time, which can flexibly adjust parameters to accommodate diverse system dynamics and performance requirements. Second, with the aid of the mapping function, a fixed-time prescribed performance controller without initial condition constraints is constructed based on fixed-time control and fixed-time filtering techniques. Specifically, the proposed control algorithm ensures that the tracking error, regardless of its initial value, converges to the prescribed boundary within a fixed time. Moreover, all signals in the closed-loop system remain bounded, thereby guaranteeing the prescribed performance of the controlled system. Finally, two simulations are presented to demonstrate the effectiveness and feasibility of the proposed control algorithm.</div></div>","PeriodicalId":50489,"journal":{"name":"European Journal of Control","volume":"88 ","pages":"Article 101463"},"PeriodicalIF":2.6,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146079301","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}
{"title":"Further research on set restabilization of perturbed Boolean control networks","authors":"Yanfang Hou , Hui Tian , Shuaiyong Li","doi":"10.1016/j.ejcon.2026.101470","DOIUrl":"10.1016/j.ejcon.2026.101470","url":null,"abstract":"<div><div>This paper further investigates the set restabilization problem of perturbed Boolean control networks (BCNs), and develops a more general parameter tuning method to solve the restabilization problem. First, a weakly absorbable attractor is proposed, which is a generalized concept of absorbable attractors introduced by the authors in Hou et al. (2025). A necessary and sufficient criterion is provided to determine whether an attractor is weakly absorbable into another attractor. Next, a set restabilization condition is derived and a parameter tuning algorithm is given. When the condition is satisfied, this algorithm can be used to modify the parameters of the old controller to ensure that the perturbed BCN is restabilized to the original target set by the adjusted controller. Compared with the existing relevant results, the method developed in this paper expands the scope of solvable problems. Finally, an illustrative example is given to show the effectiveness and advantages of our results.</div></div>","PeriodicalId":50489,"journal":{"name":"European Journal of Control","volume":"88 ","pages":"Article 101470"},"PeriodicalIF":2.6,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146188768","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}
{"title":"Current trends and future directions in event-based control","authors":"Michael Hertneck, David Meister, Frank Allgöwer","doi":"10.1016/j.ejcon.2025.101387","DOIUrl":"10.1016/j.ejcon.2025.101387","url":null,"abstract":"<div><div>The defining characteristic of event-based control is that feedback loops are only closed when indicated by a triggering condition that takes recent information about the system into account. This stands in contrast to periodic control where the feedback loop is closed periodically. Benefits of event-based control arise when sampling comes at a cost, which occurs, e.g., for Networked Control Systems or in other setups with resource constraints. A rapidly growing number of publications deals with event-based control. Nevertheless, some fundamental questions about event-based control are still unsolved. In this article, we provide an overview of current research trends in event-based control. We focus on results that aim for a better understanding of effects that occur in feedback loops with event-based control. Based on this summary, we identify important open directions for future research.</div></div>","PeriodicalId":50489,"journal":{"name":"European Journal of Control","volume":"87 ","pages":"Article 101387"},"PeriodicalIF":2.6,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145977322","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}
Kehui Ma , Sujuan Shao , Tiezhu Zhang , Liqun Lu , Lin Li , Chuanbo Ren
{"title":"A time-varying delay control method based on equivalent frequency band for preview suspension systems","authors":"Kehui Ma , Sujuan Shao , Tiezhu Zhang , Liqun Lu , Lin Li , Chuanbo Ren","doi":"10.1016/j.ejcon.2025.101445","DOIUrl":"10.1016/j.ejcon.2025.101445","url":null,"abstract":"<div><div>Conventional fixed time-delay control (FTDC) is limited by its design, which requires compromise optimization across the entire frequency domain, resulting in constrained overall performance under broadband road excitations. This study reveals that vibration reduction performance can be significantly enhanced if the time-delay control parameters adapt in real-time to varying excitation frequencies. Based on this finding, a novel frequency domain optimized Time-Varying Delay Control (TVDC) strategy is proposed for preview suspension systems. The proposed framework utilizes the Short-Time Fourier Transform (STFT) to perform time-frequency analysis on the predicted road profile within the preview horizon, thereby extracting dominant frequency components. To reduce real-time computational complexity, an equivalent frequency band is introduced to represent the main excitation, and Particle Swarm Optimization (PSO) is employed to dynamically optimize the control parameters within this band. Experiments conducted on a proportionally scaled-down suspension model show that, compared to FTDC under Class C road excitation, the TVDC strategy reduces the root mean square (RMS) values of vehicle body acceleration, velocity, and displacement by 10.9%, 8.2%, and 20.48%, respectively. This preliminarily validates the effectiveness of the proposed method, providing a preliminary foundation for future real-vehicle applications.</div></div>","PeriodicalId":50489,"journal":{"name":"European Journal of Control","volume":"87 ","pages":"Article 101445"},"PeriodicalIF":2.6,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145884582","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}
{"title":"Observer-based adaptive tracking control for a convection-reaction PDEs system with input constraints","authors":"Abdellaziz Binid , Bouchra Abouzaid , Nadia Beniich , Ilyasse Aksikas","doi":"10.1016/j.ejcon.2025.101443","DOIUrl":"10.1016/j.ejcon.2025.101443","url":null,"abstract":"<div><div>This paper addresses two significant problems for a class exothermal plug flow tubular reactors, whose model is governed by nonlinear partial differential equations (PDEs), with temperature and reactant concentration as the state variables. The first problem tackled is the design of an exponential Luenberger-like observer specifically tailored for this class of systems. The second problem pertains to tracking pre-specified profiles of temperature and reactant concentration while considering input constraints. To overcome this, a Luenberger-like observer is used. The paper concludes by demonstrating that the chemical process states asymptotically approach balls with arbitrary radii, centered at the desired profiles. Numerical simulations are provided to showcase the effectiveness of the proposed approach.</div></div>","PeriodicalId":50489,"journal":{"name":"European Journal of Control","volume":"87 ","pages":"Article 101443"},"PeriodicalIF":2.6,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145884581","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}