Searched for: department:"Delft%5C+Centre%5C+for%5C+Systems%5C+and%5C+Control"
(1 - 19 of 19)
document
Villarreal Magaña, O.A. (author)
The amount of mineral and energy resources in conventional reservoirs has been drastically diminished in recent years. This has led to the development of techniques to reach reservoirs which are not easy to access and, more specifically, where boreholes with complex geometries need to be drilled. Directional drilling allows to accomplish such...
master thesis 2016
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Jansen, W.L. (author)
Nowadays, traffic congestion on highways is still an increasing problem, in the Netherlands and worldwide. Hence, there is an increasing societal demand for innovative solutions for this problem. Preferably, these solutions also contribute to the reduction of fuel consumption (and hence emissions) and higher traffic safety. This has raised the...
master thesis 2016
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Wang, Y. (author)
Inverted pendulums have been classic setups in the control laboratories since the 1950s. They were originally used to illustrate ideas in linear control such as stabilization of unstable systems. Because of their nonlinear nature, pendulums have maintained their usefulness and they are now used to illustrate many of the ideas emerging in the...
master thesis 2016
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Satyavada, H. (author)
Subsea multiphase boosting is a technology that is gaining interest from oil & gas operators and suppliers. In response to the growing interest in multiphase boosting technology, GE is working on the development of a subsea multiphase boosting station. In this work, controller synthesis needs are identified for safe and reliable operation of the...
master thesis 2016
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Burger, R. (author)
In recent years, the desire to use manipulators in close collaboration with human workers has been a driving force behind a lot of robotics research. As part of a research project, Technolution BV has built a robotic pick and place system using the Universal Robots UR5, a 6 DoF manipulator. It was recognized that to realize the full potential of...
master thesis 2016
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Doekemeijer, B.M. (author)
Wind turbines are often grouped together for financial reasons, but due to wake development this usually results in decreased turbine lifetimes and power capture, and thereby an increased levelized cost of energy (LCOE). Wind farm control aims to minimize this cost by operating turbines at their optimal control settings. Most state-of-the-art...
master thesis 2016
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Reddy, G.P. (author)
The research field of autonomous vehicle technology has been growing at an accelerated pace. Improved safety, fuel and commuting efficiency are the motivating technical and social factors to develop fully autonomous vehicles. Sensor technology, advanced software and intelligent control are the different modules that work in unison to achieve the...
master thesis 2016
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Shah, A.M. (author)
A convoluted manipulation task involves extensive planning and the use of a supervisory controller to execute the desired task. One controller specification is generally unsuitable to perform the complete manipulation task. Manipulation involves contact of the object being manipulated with robots, surfaces and other objects in the scenario. The...
master thesis 2015
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Kleijn, A.C. (author)
Railway networks, such as the one in the Netherlands, form an important means of transportation, both for passengers, as well as for transporting goods. Train services carrying passengers often run according to a predefined schedule or timetable. When those train services are delayed, for example due to accidents or malfunctioning rolling stock,...
master thesis 2012
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Veneman, J.B. (author)
This thesis studies the Switched Linear Quadratic Regulator (SLQR) problem, over a hybrid (continuous and discrete) dynamical model known as "switched system". The problem is defined as computing the optimal continuous and discrete switching control to minimise a quadratic cost function that weights the states and the continuous controls. The...
master thesis 2012
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Shirokov, V.A. (author)
In this project a challenge in the field of minimally invasive surgery is addressed. Contemporary minimally invasive instruments usually consist of a rigid beam with an end effector on one side and a controlling mechanism on the other. These instruments work well for cases when the body can be entered in such a way that the target, on which to...
master thesis 2012
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Babuska, R. (author)
The brain hosts complex networks of neurons that are responsible for behavior in humans and animals that we generally call intelligent. I is not easy to give an exact definition of intelligence – for the purpose of this talk it will suffice to say that we refer to intelligence as a collection of capacities for abstract thought, reasoning,...
public lecture 2011
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Fraanje, R. (author), Doelman, N. (author)
In recent years various researchers have proposed an optimal control approach for the rejection of turbulence-induced wavefront distortions in an AO system. The essential element in the design of an optimal controller is the choice for the turbulence model, which predicts the turbulence to compensate for the inherent delay in the AO control loop...
conference paper 2010
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Hinnen, K. (author), Verhaegen, M. (author), Doelman, N. (author)
Most adaptive optics systems (AO) are based on a simple control law that is unable to account for the temporal evolution of the wavefront. In this paper, a recently proposed data-driven H2-optimal control approach is demonstrated on an AO laboratory setup. The proposed control approach does not assume any form of decoupling and can therefore...
conference paper 2006
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Sijbers, J. (author), Den Dekker, A.J. (author), Poot, D. (author), Bos, R. (author), Verhoye, M. (author), Van Camp, N. (author), Van der Linden, A. (author)
In the literature, many methods are available for estimation of the variance of the noise in magnetic resonance (MR) images. A commonly used method, based on the maximum of the background mode of the histogram, is revisited and a new, robust, and easy to use method is presented based on maximum likelihood (ML) estimation. Both methods are...
conference paper 2006
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Hinnen, K. (author), Doelman, N. (author), Verhaegen, M. (author)
The problem of finding the closed-loop optimal controller is formulated in an H2-optimal control framework. This provides a natural way to account for the fact that in many AO systems the wavefront phase cannot be measured directly. Given a multi-variable disturbance model of both wavefront slopes and wavefront phases,3 this provides a general...
conference paper 2005
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Hinnen, K. (author), Verhaegen, M. (author), Doelman, N. (author)
Even though the wavefront distortion introduced by atmospheric turbulence is a dynamic process, its temporal evolution is usually neglected in the adaptive optics (AO) control design. Most AO control systems consider only the spatial correlation in a separate wavefront reconstruction step. By accounting for the temporal evolution of the...
conference paper 2005
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Doelman, N.J. (author), Hinnen, K.J.G. (author), Stoffelen, F.J.G. (author), Verhaegen, M.H. (author)
An Adaptive Optics (AO) system for astronomy is analysed from a control point of view. The focus is put on the temporal error. The AO controller is identified as a feedback regulator system, operating in closed-loop with the aim of rejecting wavefront disturbances. Limitations on the performance of feedback regulator systems are discussed. The...
conference paper 2004
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Sijbers, J. (author), Den Dekker, A.J. (author)
Functional magnetic resonance imaging (fMRI) intends to detect significant neural activity by means of statistical data processing. Commonly used statistical tests include the Student-t test, analysis of variance, and the generalized linear model test. A key assumption underlying these methods is that the data are Gaussian distributed. Moreover,...
conference paper 2004
Searched for: department:"Delft%5C+Centre%5C+for%5C+Systems%5C+and%5C+Control"
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