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Ummels, Raphael (author)
Inland waterway transport is a low CO2 emission alternative to road transport. A shift towards more inland waterway transport could also help reduce road congestion and noise pollution. Infrastructure bottlenecking, particularly at locks, is part of the reasons preventing this shift. Congestion is leading to delays. Locks can be physically...
master thesis 2023
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Sewailem, Hassan (author)
The transition towards a more sustainable future has been more prevalent and necessary in recent years due to the increase of greenhouse gas emissions. With the increasing size of modern cities, major concern is risen in the transport sector, becoming one of the main contributors to greenhouse gas emissions. More specifically, road transport is...
master thesis 2023
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Gallagher, Frank (author)
In this thesis a novel method for the realisation of Max-Min-Plus-Scaling (MMPS) functions is presented. It has previously been shown that continuous piecewise affine (PWA) functions, conjunctive MMPS functions (also lattices- or min-max functions) and kripfganz MMPS functions (difference between two convex functions) can each describe the same...
master thesis 2023
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Kroese, Justine (author)
Max-plus-linear (MPL) systems are systems that are linear in max-plus algebra. A generalization of these systems are Max-Min-Plus-Scaling (MMPS) systems. Next to maximization and addition (plus), MMPS systems use the operations minimization and scaling. They are discrete-event (DE) systems, which means that the changing of the states is...
master thesis 2022
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Smeets, Lucy (author)
Sorting systems form an example of event driven systems. These types of systems are referred to as discrete event systems (DES), and they consist of jobs that need to be performed at available resources. In an autonomous sorting system, jobs consist of robots receiving and delivering parcels at the correct locations. With scheduling, optimal...
master thesis 2022
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Beek, Ruby (author)
This thesis is devoted to the class of Max-Plus Linear Parameter Varying (MP-LPV) systems. Recently, this class is introduced as an extension of the class of Max-Plus-Linear (MPL) systems in the field of max-plus algebra. The MPL framework is useful when modeling Discrete Event Systems (DES). Describing DES in conventional algebra results in...
master thesis 2022
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Hoogerwerf, Samuel (author)
The goal in this thesis is to make a prediction on the total processing time for logistical systems to complete their tasks. For simple systems that can be described using a regular max plus state space model this is done by calculating the systems eigenvalue and multiplying that by the number of iterations required. But, for more complex...
master thesis 2022
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de Jong, Bart (author)
Switching max-plus linear (SMPL) systems written in max-plus algebra form a robust framework to model discrete-event systems governed by synchronisation whose behaviour may switch over time. Their evolution is described by a max-plus linear state-space representation that may change by switching modes. In their typical form, switching may depend...
master thesis 2022
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van Adrichem, Merlijn (author)
Delay Management is proven to reduce the average passenger delay. However, the current method of Delay Management either uses fast basic or slow accurate passenger rerouting. The former has a downfall in that it is inaccurate since it assumes that passengers delay is the periodicity of the train of the original transfer, while in reality, faster...
master thesis 2022
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van Heusden, Toon (author)
In this thesis, research is done on the influence and benefits of an iterative interaction between a scheduler and its subsystems for an updated scheduler which minimizes to a certain cost. This is done by providing a case study of a beer brewery. The scheduler is obtained by using a switching max-plus linear approach. The subsystems will be...
master thesis 2022
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Miao, Rui (author)
As the demand for the railways is expected to raise in the future, researchers are looking for ways to improve the railway capacity to increase the transport ability. Virtual coupling is a new solution based on the moving block technology, which further shortens train separation from absolute braking distance to relative braking distance. This...
master thesis 2022
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Pesselse, Mike (author)
Inland waterways form a natural network infrastructure with the capacity for waterborne transport of people and goods for moving freight from seaports to the hinterland. Recently, Inland Waterway Transport (IWT) has been promoted more extensively by the European Union and various governments as it plays a crucial role in reducing road congestion...
master thesis 2022
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Zhang, Shubo (author)
The scheduling algorithm of the printer is an important factor that affects printing efficiency. For current printers, paper scheduling often follows the first-in-first-out principle, so it is often not optimal. The printer system is a type of semi-cyclic discrete-event system with synchronization but no concurrency. The system contains a set of...
master thesis 2021
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Toten, Daan (author)
A Fall-Pipe system deposits rock on the seabed for the protection of submerged objects. Due to the irregular motion of a vessel on the waves the accuracy and efficiency of the rock dumping process is limited. This thesis develops a motion compensation system for a modular Fall-Pipe system developed by Vuyk Engneering. From literature it appears...
master thesis 2021
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Erkelens, Folkert (author)
Legged locomotion is a discrete event system (DES) due to the ever changing contact states of each leg. As such, it requires a nonlinear modelling method to predict the trajectory of a legged robot. One such robot has been focused on throughout this thesis; the six legged "Zebro''. With its half-circular legs, the Zebro is well suited for...
master thesis 2021
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Abdelmoumni, Mohamed (author)
In this research, we introduce and discuss an extension of max-plus linear systems, called max-plus linear parameter varying systems. In this extension, uncertainty is modelled as a varying parameter, making it possible to leverage non-linearities and non-max-plus terms within the model. Issues arise when the varying parameter is dependent on...
master thesis 2021
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Kreuk, Jesper (author)
Some above the knee amputees take a smaller step with their prosthetic leg. A momentum exchange device (MED) can increase the step length by exchanging angular momentum between the device and the leg. However, there are no controllers for MEDs during regular gait. The goal of this study is to build a model predictive controller (MPC) that...
master thesis 2021
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Dekker, Quinten (author)
Dense 3D modeling based on monocular visual data is a powerful process of gaining spatial 3D understanding from 2D observations. The use of visual data to reconstruct such 3D models is still a challenging topic. To obtain the accurate dimensions, additional metadata is required such as a GPS which is not always available. Besides this, dealing...
master thesis 2020
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Kalamboukis, Vangelis (author)
The relation between graph theory and max-plus algebra has been well studied since the inception of max-plus algebra. It has been shown that any square matrix over the maxplus semiring can be represented as a weighted directed graph. Furthermore, properties of these matrices, such as irreducibility and its (unique) eigenvalue, can be determined...
master thesis 2018
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Taams, Hugo (author)
This thesis report proposes a framework to implement Navigation, Guidance and Control (GNC) systems, that enable point-to-point autonomy for displacement vessels. A model-based control approach is chosen as the basis of the GNC systems. The resulting algorithms are implemented for verification in a 1:25 scale model of a Azimuth Stern Drive (ASD)...
master thesis 2018
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