Searched for: subject%3A%22Large%255C-Scale%255C%2BSystems%22
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Segovia Castillo, P. (author), Puig, Vicenç (author), Duviella, Eric (author)
This work is concerned with the design of a two-step distributed state estimation scheme for large-scale systems in the presence of unknown-but-bounded disturbances and noise. The set-membership approach is employed to construct a compact set containing the states consistent with system measurements and bounded noise and disturbances. The...
journal article 2022
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Javanmardi, N. (author), Borja Rosales, L.P. (author), Yazdanpanah, M. J. (author), Scherpen, J.M.A. (author)
This paper investigates a distributed formation tracking control law for large-scale networks of mechanical systems. In particular, the formation network is represented by a directed communication graph with leaders and followers, where each agent is described as a port-Hamiltonian system with a constant mass matrix. Moreover, we adopt a...
journal article 2022
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Pour, Fatemeh Karimi (author), Duviella, Eric (author), Segovia Castillo, P. (author)
Model predictive control (MPC) has been widely employed to control a large variety of water systems, such as dams, irrigation canals, inland waterways, drinking water networks and wastewater treatment plants. Its predictive capabilities and the possibility to incorporate constraints make MPC well suited to address several, and sometimes...
journal article 2022
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Stobbe, P.J. (author), Keijzer, T. (author), Ferrari, Riccardo M.G. (author)
Fully Homomorphic Encryption (FHE) has made it possible to perform addition and multiplication operations on encrypted data. Using FHE in control thus has the advantage that control effort for a plant can be calculated remotely without ever decrypting the exchanged information. FHE in its current form is however not practically applicable for...
conference paper 2022
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Ramos, Guilherme (author), Aguiar, A. Pedro (author), Gonçalves Melo Pequito, S.D. (author)
We provide a necessary and sufficient graph-theoretical characterization of quotient fixes modes occurring in parametric decentralized control systems. Specifically, we introduce the notion of structurally quotient fixed modes (SQFMs) that generically captures the quotient fixed modes and only depends on the system's structure. Additionally,...
journal article 2021
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Di Lauro, Francesco (author), Kiss, Istvan Zoltan (author), Rus, Daniela (author), Della Santina, C. (author)
Many of the policies that were put into place during the Covid-19 pandemic had a common goal: to flatten the curve of the number of infected people so that its peak remains under a critical threshold. This letter considers the challenge of engineering a strategy that enforces such a goal using control theory. We introduce a simple formulation...
journal article 2021
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Alsayyari, F.S. (author)
Large-scale complex systems require high-fidelity models to capture the dynamics of the system accurately. For example, models of nuclear reactors capture multiphysics interactions (e.g., radiation transport, thermodynamics, heat transfer, and fluid mechanics) occurring at various scales of time (prompt neutrons to burn-up calculations) and...
doctoral thesis 2020
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Ciullo, A. (author), Kwakkel, J.H. (author), De Bruijn, Karin M. (author), Doorn, N. (author), Klijn, F. (author)
Flood risk management decisions in many countries are based on decision-support frameworks which rely on cost-benefit analyses. Such frameworks are seldom informative about the geographical distribution of risk, raising questions on the fairness of the proposed policies. In the present work, we propose a new decision criterion that accounts...
journal article 2020
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Sinquin, B. (author)
The extremely large telescopes that should see first light in coming years demand so-called adaptive optics systems to overcome the devastating effect of the atmospheric turbulence on the image quality. A sensor measures the incoming distortion of the light and is used for reshaping the latter using a deformable mirror. Processing the large...
doctoral thesis 2019
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Ye, J. (author), Roy, S. (author), Godjevac, M. (author), Baldi, S. (author)
With the growing demand of large-scale heavy lift vessels in the deep-sea offshore construction works, high performance of Dynamic positioning (DP) systems is becoming ever crucial. However, current DP systems on board of heavy lift vessels do not consider model uncertainty (typically arising from mooring forces). In this paper, an observer...
journal article 2019
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Gedon, Daniel (author), Piscaer, P.J. (author), Batselier, K. (author), Smith, C.S. (author), Verhaegen, M.H.G. (author)
An extension of the Tensor Network (TN) Kalman filter [2], [3] for large scale LTI systems is presented in this paper. The TN Kalman filter can handle exponentially large state vectors without constructing them explicitly. In order to have efficient algebraic operations, a low TN rank is required. We exploit the possibility to approximate the...
conference paper 2019
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Monchen, Guido (author), Sinquin, B. (author), Verhaegen, M.H.G. (author)
This brief presents an algorithm for the recursive identification of Vector AutoRegressive (VAR) models of large dimensions. We consider a VAR model where the coefficient matrices can be written as a sum of Kronecker products. The algorithm proposed consists of recursively updating the Kronecker factor matrices at each new time step using...
journal article 2018
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Monchen, G. (author)
Adaptive Optics (AO) play an essential role in the field of astronomical seeing for ground-based telescopes, providing a corrected image from the disturbance caused by the light having to travel through the turbulent atmosphere of our Earth. To provide us with more detailed images, the sizes of these telescopes are getting increasingly larger....
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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Sinquin, B. (author), Verhaegen, M.H.G. (author)
In this paper we address the identification of (2D) spatial-temporal dynamical systems governed by the Vector Auto-Regressive (VAR) form. The coefficient-matrices of the VAR model are parametrized as sums of Kronecker products. When the number of terms in the sum is small compared to the size of the matrix, such a Kronecker representation...
conference paper 2017
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Nunez Vicencio, A.A. (author), Ocampo-Martinez, C. (author), Maestre, J.M. (author), De Schutter, B.H.K. (author)
The Non-Centralized Model Predictive Control (NC-MPC) framework refers in this paper to any distributed, hierarchical, or decentralized model predictive controller (or a combination of them) the structure of which can change over time and the control actions of which are not obtained based on a centralized computation. Within this framework, we...
journal article 2015
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Spiridon, V.L. (author)
In recent years, there is an increasing interest in the scientific community for development of algorithms targeting large-scale networks. In addition to their sheer size, these networks also exhibit various topology dynamics -- nodes join and exit at high rates (churn), are mobile and are not always reliable. Such extreme properties make...
master thesis 2013
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Pruteanu, A.S. (author)
Software applications developed for large-scale systems have always been difficult to de- velop due to problems caused by the large number of computing devices involved. Above a certain network size (roughly one hundred), necessary services such as code updating, topol- ogy discovery and data dissemination are challenging to operate and thus...
doctoral thesis 2013
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Van Berkel, S.E.F. (author)
In recent years, large-scale systems have become mainstream at a very high pace. Typical examples of large-scale systems are MANETs, Wireless Sensor Networks, Pervasive Computing, Swarm Robotics, etc. These systems distinguish them- selves by the large number of devices they embody, and emergent behaviors they exhibit: Behavior that is globally...
master thesis 2012
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Carmona Benitez, R.B. (author)
Airlines invest a lot of money before opening new pax transportation services, for this reason, airlines have to analyze if their profits will overcome the amount of money they have to invest to open new services. The design and analysis of the feasibility of airlines networks can be done by using the models developed in this thesis. It is...
doctoral thesis 2012
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