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de Albuquerque Gleizer, G. (author)Event-triggered control (ETC) and self-triggered control (STC) are sample-and-hold control paradigms in which sensor data is only updated to the controller when necessary, often aperiodically, in contrast to the well-established periodic sampling paradigm. In ETC, a state-dependent event triggers a transmission, while in STC the controller...doctoral thesis 2022
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Delimpaltadakis, Giannis (author)A fundamental challenge in networked control systems is reducing the amount of communications of each system in the network, so that bandwidth and energy are used efficiently. To address the challenge, the research community has shifted its focus to Event-Triggered Control (ETC), in which communication between the control system's different...doctoral thesis 2022
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Bianchi, M. (author), Ananduta, W. (author), Grammatico, S. (author)The distributed dual ascent is an established algorithm to solve strongly convex multi-agent optimization problems with separable cost functions, in the presence of coupling constraints. In this letter, we study its asynchronous counterpart. Specifically, we assume that each agent only relies on the outdated information received from some...journal article 2022
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Delimpaltadakis, Giannis (author), de Albuquerque Gleizer, G. (author), Van Straalen, Ivo (author), Mazo, M. (author)We present ETCetera, a Python library developed for the analysis and synthesis of the sampling behaviour of event triggered control (ETC) systems. In particular, the tool constructs abstractions of the sampling behaviour of given ETC systems, in the form of timed automata (TA) or finite-state transition systems (FSTSs). When the abstraction...conference paper 2022
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van Straalen, Ivo (author)In recent years, Networked Control Systems (NCS) have become more popular, partly because of the increasing accessibility. In NCS, multiple plants and controllers are connected over a wired or wireless shared network, possibly having significant spatial separation. A major issue that arises is network congestion: If too many control loops are...master thesis 2021
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Li, Jingqi (author), Chen, Ximing (author), Gonçalves Melo Pequito, S.D. (author), Pappas, George J. (author), Preciado, Victor M. (author)In this article, we study the target controllability problem of networked dynamical systems,in which we are tasked to steer a subset of network nodes toward a desired objective. More specifically, we derive necessary and sufficient conditions for the structural target controllability of linear time-invariant (LTI) systems with symmetric state...journal article 2021
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Bianchi, M. (author), Grammatico, S. (author)We design a distributed algorithm for learning Nash equilibria over time-varying communication networks in a partial-decision information scenario, where each agent can access its own cost function and local feasible set, but can only observe the actions of some neighbors. Our algorithm is based on projected pseudo-gradient dynamics, augmented...journal article 2021
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Gramatikov, S.T. (author)Cyber-attacks long have been a topic reserved for sci-fi movies and books. With the advance of internet and the globalisation of technology supply chains, as well as the growing political and economic pressure around the world, cyber warfare has become the new weapon of choice for covert state operations, but also rogue organizations. In the...master thesis 2020
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de Albuquerque Gleizer, G. (author), Mazo, M. (author)This paper addresses the problem of modeling and scheduling the transmissions generated by multiple event-triggered control (ETC) loops sharing a network. We present a method to build a finite-state similar model of the traffic generated by periodic ETC (PETC), which by construction mitigates the combinatorial explosion that is typical of...journal article 2020
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Fabiani, F. (author), Grammatico, S. (author)This paper considers the multi-vehicle automated driving coordination problem. We develop a distributed, hybrid decision-making framework for safe and efficient autonomous driving of selfish vehicles on multi-lane highways, where each dynamics is modeled as a mixed-logical–dynamical system. We formalize the coordination problem as a generalized...journal article 2020
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de Albuquerque Gleizer, G. (author), Mazo, M. (author)We provide a method to construct finite abstractions exactly bisimilar to linear systems under a modified periodic event-triggered control (PETC), when considering as output the inter-event times they generate. Assuming that the initial state lies on a known compact set, these finite-state models can exactly predict all sequences of sampling...journal article 2020
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Mooren, Maurits (author)With the increasing amount of information sent in control systems, data is more often communicated through a communication network. These networked control systems use the network to exchange control and feedback signals among the system’s components. Data sent over a network attracts adversaries that try to read and modify this data. These...master thesis 2019
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Szymanek, Aleksandra (author)With the recent development of control systems, event-triggered control (ETC) has been introduced to prevent unnecessary usage of resources, which often happens under time-based control implementations. This thesis presents a novel approach to periodic event-triggered control (PETC) that aims at reducing the number of transmissions between the...master thesis 2019
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Schalkwijk, Paul (author)As the use of Networked Control Systems increases, the need for control methods with more efficient network usage also grows. These methods require a more sophisticated way of pre- dicting their traffic, and an approach for this is using a formal modelling approach using Timed Automata. Timed Automata have been used for over 25 years for several...master thesis 2019
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Szymanek, Aleksandra (author), de Albuquerque Gleizer, G. (author), Mazo, M. (author)In networked control systems (NCSs), extensive data exchange between plants and controllers leads to an unnecessary usage of communication and computational resources. Aperiodic sample-and-hold methods such as event-triggered control (ETC) can reduce the number of transmissions, allowing more applications to operate within the same network....conference paper 2019
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de Albuquerque Gleizer, G. (author), Mazo, M. (author)In this work we propose a Self-Triggered Control (STC) strategy for linear time-invariant (LTI) systems subject to bounded disturbances, using LTI discrete-time dynamic output-feedback. The STC logic computes worst-case triggering times from available information, based on a Periodic Event Triggered Control (PETC) triggering function. In the...journal article 2018
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Hop, Christiaan (author)The number of electronic control systems applied in vehicles has increased dramatically over<br/>the years. This trend will only continue with the introduction of novel technologies such as<br/>advanced driver assistance systems (ADAS). To save cable weight and costs in-vehicle control<br/>systems often use shared communication networks. With...master thesis 2017
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Bregman, Sander (author)In this thesis, a control design problem, in which communication between different elements of the control system takes place through a shared (possibly wireless) channel, is considered. With the implementation of the proposed approach, the use of limited resources such as network bandwidth and battery life may be reduced.<br/><br/>The proposal...master thesis 2017
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Moustakis, Nikolaos (author)Major advancements over the last few decades in communication networks gave rise to the<br/>new paradigm of Networked Control Systems (NCSs). Within this paradigm, sensing and<br/>actuation signals are exchanged among various parts of a single system or among many<br/>subsystems via communication networks. Although this enables one to perform...master thesis 2017
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Boem, Francesca (author), Ferrari, Riccardo M.G. (author), Keliris, Christodoulos (author), Parisini, Thomas (author), Polycarpou, Marios M. (author)Networked systems present some key new challenges in the development of fault-diagnosis architectures. This paper proposes a novel distributed networked fault detection methodology for large-scale interconnected systems. The proposed formulation incorporates a synchronization methodology with a filtering approach in order to reduce the effect...journal article 2017
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