Searched for: subject:"Constraints"
(1 - 20 of 51)

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Helisto, N. (author), Kiviluoma, J. (author), Morales-Espana, G.A. (author), O'Dwyer, C. (author)
Planning of future energy systems with higher prevalence of wind and solar energy requires a careful representation of the temporal and operational characteristics of the system in the investment planning model. This study aims to identify the aspects that should be considered when selecting the representation for a particular system. To...
article 2021
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Minaeva, A. (author), Roy, D. (author), Akesson, B. (author), Hanzalek, Z. (author), Shakraborty, S. (author)
Automotive software implements different functionalities as multiple control applications sharing common platform resources. Although such applications are often developed independently, the control performance of the resulting system depends on how these applications are integrated. A key integration challenge is to efficiently schedule these...
conference paper 2020
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van der Weijst, R. (author), van Keulen, T. (author), Willems, F.P.T. (author)
This work presents a new method for online fuel-efficiency optimization of Diesel engines, using constrained extremum-seeking. A two-input optimization problem, which is suitable for extremum-seeking, is integrated into a tracking control system. As a result, both air-path and fuel-path actuators are used for tracking and extremum-seeking. A key...
article 2019
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Leonetti, D. (author), Snijder, H.H. (author), Maljaars, J. (author)
Two basic procedures are currently available to determine the critical condition of a flawed structure, at which unstable crack extension may occur. The first method based on elastic-plastic fracture mechanics is accurate but requires a time consuming elastic-plastic finite element analysis. The second method estimates the critical condition...
conference paper 2019
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Hanea, R.G. (author), Bjorlykke, O.P. (author), Hashmi, Y. (author), Feng, T. (author), Fonseca, R.M. (author)
In this paper we present our results, challenges and learnings, over a two-year period wherein robust multi-objective optimization was applied at the Mariner asset which is being currently developed. Many different problems were solved with different objectives. These problems were formulated based on the phases of planning and development at...
conference paper 2019
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Fransman, J.E. (author), Sijs, J. (author), Dol, H.S. (author), Theunissen, E. (author), de Schutter, B. (author)
In this paper, Mine Counter-Measures (MCM) operations with multiple cooperative Autonomous Underwater Vehicles (AUVs) are examined within the Distributed Constraint optimization Problem (DCOP) framework. The goal of an MCM-operation is to search for mines and mine-like objects within a predetermined area so that ships can pass the area through a...
conference paper 2019
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Morales-España, G. (author), Tejada-Arango, D.A. (author)
This letter proposes a clustered unit commitment (CUC) formulation to accurately model flexibility requirements such as ramping, reserves, and startup/shutdown constraints. The classic CUC intrinsically and hiddenly overestimates the individual unit's flexibility, thus being unable to replicate the result of the individual UC. This letter...
article 2019
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de Koning, A. (author), Kleijn, R. (author), Huppes, G. (author), Sprecher, B. (author), van Engelen, G. (author), Tukker, A. (author)
Low-carbon energy systems are more metal-intensive than traditional energy systems. Concerns have been expressed that this may hamper the transition to a low-carbon economy. We estimate the required extraction of Fe, Al, Cu, Ni, Cr, In, Nd, Dy, Li, Zn, and Pb until 2050 under several technology-specific low-carbon scenarios. Annual metal demand...
article 2018
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Fransman, J. (author), Sijs, J. (author), Dol, H.S. (author), Theunissen, E. (author), de Schutter, B.D. (author)
DCOP (Distributed Constraint optimization Problem) is a framework for representing distributed multi- agent problems. However, it only allows discrete values for the decision variables, which limits its application for real-world problems. In this paper, an extension of DCOP is investigated to handle variables with continuous domains....
conference paper 2018
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Pinto, M.J. (author), Barros, A.I. (author), Noomen, R. (author), van Gelder, P.H.A.J.M. (author), Lamballais Tessensohn, T. (author)
The operational use of satellite systems has been increasing due to technological advances and the reduced costs of satellites and their launching. As such it has become more relevant to determine how to better use these new capabilities which is reflected in an increase in application studies in this area. This work focuses on the problem of...
conference paper 2018
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Vo-Thanh, N. (author), Jans, R. (author), Schoen, E.D. (author), Goos, P. (author)
Two-level orthogonal designs play an important role in industrial screening experiments, in which the primary goal is to identify the treatment factors with the largest main effects on the output of a process or the performance of a product. Often, the experimental tests suggested by the orthogonal designs cannot be performed on a single day or...
article 2018
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Neumann, N.M.P. (author), Knegjens, R. (author), Den Hollander, R. (author), Oggero, S. (author), Burghouts, G.J. (author), Van Den Broek, S.P. (author)
Algorithms for the detection and tracking of objects can be combined into a system that automatically extracts relevant events from a large amount of video data. Such a system , can be particularly useful in video surveillance applications, notably to support analysts in retrieving information from hours of video while working under strict time...
conference paper 2018
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Ara, H.A. (author), Geilen, M. (author), Behrouzian, A. (author), Basten, A.A. (author)
In multi-media applications, bufers represent storage spaces that are used to store the data communicated between diferent tasks in the application, and throughput refers to the rate at which output data is produced by the application. The capacities of the bufers inluence the throughput, by altering the waiting times for tasks that need to read...
conference paper 2018
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MacDougall, P. (author), Ran, B. (author), Huitema, G.B. (author), Deconinck, G. (author)
With the growth of renewable generated electricity in the energy mix, large energy storage and flexible demand, particularly aggregated demand response is becoming a front runner as a new participant in the wholesale energy markets. One of the biggest barriers for the integration of aggregator services into market participation is knowledge of...
article 2017
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van Leeuwen, C.J. (author), Pawełczak, P. (author)
We propose a novel incomplete cooperative algorithm for distributed constraint optimization problems (DCOPs) denoted as Cooperative Constraint Approximation (CoCoA). The key strategy of the algorithm is to use a semi-greedy approach in which knowledge is distributed amongst neighboring agents, and assigning a value only once instead of an...
conference paper 2017
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Zegers, J.C. (author), Semsar Kazerooni, E. (author), Ploeg, J. (author), van de Wouw, N. (author), Nijmeijer, H. (author)
In this paper, a distributed consensus control approach for vehicular platooning systems is proposed. In formalizing the underlying consensus problem, a realistic vehicle dynamics model is considered and a velocity-dependent spacing policy between two consecutive vehicles is realized. As a particular case, the approach allows to consider...
article 2017
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Laan, C.M. (author), Barros, A.I. (author), Boucherie, R.J. (author), Monsuur, H. (author)
This paper considers a special case of security games dealing with the protection of a large area divided in multiple cells for a given planning period. An intruder decides on which cell to attack and an agent selects a patrol route visiting multiple cells from a finite set of patrol routes such that some given operational conditions on the...
conference paper 2017
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van Leeuwen, C.J. (author), Yildirim, K.S. (author), Pawelczak, P. (author)
Wireless Power Transfer (WPT) technologies aim at getting rid of cables used by consumer devices for energy provision. As long distance WPT is becoming mature, the health impact of WPT becomes increasingly important to consider. In this paper we look at how to maximize the wireless power transfer to remote devices, while maintaining a safe level...
conference paper 2017
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Saldana, J. (author), Ruiz-Mas, J. (author), Almodovar, C.J.L. (author)
Frame aggregation is widely used in 802.11 WLANs in order to provide a significant throughput improvement. However, the latency increase that comes as a counterpart can reduce the quality experienced by the users of applications with real-time constraints. This letter explores the throughput versus latency tradeoff in the context of central...
article 2017
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Zhu, X.Y. (author), Geilen, M. (author), Basten, T. (author), Stuijk, S. (author)
Synchronous dataflow graphs (SDFGs) are widely used to represent digital signal processing algorithms and streaming media applications. This paper presents several methods for binding and scheduling SDFGs on a multiprocessor platform. Exploring the state space generated by a self-timed execution (STE) of an SDFG, we present an exact method for...
article 2016
Searched for: subject:"Constraints"
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