Searched for: contributor%3A%22Verhaegen%252C%255C+M.%255C+%255C%2528mentor%255C%2529%22
(1 - 20 of 31)

Pages

List view
Grid view
document
De Hoogt, I. (author)
Electricity can not be stored efficiently in the grid, resulting in a need for demand and supply to be in balance. The Transmission System Operator operates a real-time electricity market to acquire extra supply or load. Traditionally, electricity usage is forecast as accurately as possible a day ahead and deviations from this electricity...
master thesis 2017
document
Dominicus, S. (author)
The next generation of ground-based telescopes have a segmented primary mirror consisting of up to 800 segments which are mounted on a support truss. These segments are actively controlled to correct for external disturbances of which wind loading is the primary source. As mirror size and number of segments grows ever larger, dynamic coupling...
master thesis 2016
document
de Iongh, G.K. (author)
Optical fibres are ideal for local light delivery in hard to access places due to their flexible nature and small size. In most applications, such as microscopy, micromanipulation and endoscopy, it is desired to obtain and maintain a specified intensity pattern at the fibre output. Multimode fibres (MMFs) are capable of carrying a large amount...
master thesis 2016
document
Munnix, J.H.T. (author)
Researchers at Delft University of Technology have recently developed an algorithm for optimizing noisy, expensive and possibly nonconvex objective functions for which no derivatives are available. The data-based online nonlinear extremum-seeker (DONE) was originally developed for sensorless wavefront aberration correction in optical coherence...
master thesis 2016
document
Kalgreadis, A. (author)
Magnetic levitation actuation has proven to be a viable solution in many applications where high performance actuators are needed that can achieve fine manipulation and position control. Advantages of magnetic levitation include elimination of friction, backlash, vibrations and wear of components due to contact. Many such systems have been...
master thesis 2015
document
Warffemius, F.T. (author)
ASML is always searching for improvements in reducing the servo error of both the Wafer Stage and the Reticle Stage of their lithography machines. Due to the repetitive motion and corresponding repetitive servo error of the Reticle Stage Short Stroke (RSSS), Iterative Learning Control (ILC) can be a powerful method to further reduce the servo...
master thesis 2015
document
Nugroho, H. (author)
Optical beamforming networks (OBFNs), which consist of many small and flat antennas, called phased array antennas (PAAs), can be tuned such that the signal beam from the airplanes can be steered towards a satellite. This was proposed as a alternative to the mechanically steered antenna, which has many disadvantages. The problem of tuning a large...
master thesis 2015
document
Kant, N. (author)
In this thesis a model-based filter is developed to improve the estimates of the lens aberrations.
master thesis 2015
document
Liu, B.Y. (author)
In the manufacturing process of flat panel displays (FPD), such as the making of the photomasks and the lithographic process of the glass substrates, the demand for a larger but thinner substrate is increasing. Consequently, the moving stage of these manufacturing machines become larger in size and heavier in weight. The high velocity and...
master thesis 2015
document
Luymes, C.B. (author)
The wavefront of the light from objects in space gets distorted by the atmosphere around the Earth, decreasing the image quality of the telescope. Compensation for these rapidly changing wavefronts results in more detailed images of objects in space. The discipline of science that deals with this kind of compensation is called Adaptive Optics ...
master thesis 2015
document
Bilderbeek, R. (author)
The acquisition of high resolution images is essential for the early detection of eye diseases. To acquire such high resolution images, it is necessary to correct for monochromatic aberrations introduced by the imaging system and the eye itself. Currently, adaptive optics systems are used to correct these aberrations and thereby achieve a higher...
master thesis 2015
document
Kooijman, J.F. (author)
Stock market prediction has been a research topic for decades; recently, efforts to increase the accuracy by including data from social media like Google and Twitter received a lot of attention. Social media can be regarded as indicator for sentiments and sentiments are known to influence the stock market. Current models lack interpretation; it...
master thesis 2014
document
Burki, T.R. (author)
Prediction of the stock market has been a research topic for decades. Recently, data from social media like Google and Twitter are included in prediction models. This data serves as an indicator of sentiments that are potentially useful for prediction. Interpretation of current prediction methods is cumbersome. Beforehand it is not known which...
master thesis 2014
document
De Gelder, E. (author)
Without any form of compensation, atmospheric turbulence blurs the images obtained by ground-based telescopes. An Adaptive Optics (AO) system compensates for the optical wavefront distortions introduced in a light beam as it propagates through a turbulent medium. The wavefront phase errors are measured with a Wavefront Sensor (WFS) and corrected...
master thesis 2014
document
Lopes e Silva, J. (author)
We are currently facing an increasing amount of challenges in the area of photonics as more and more applications in need for active “photon control” sprout in different fields of science. Adaptive Optics (AO) is the subject which deals with measuring, reconstructing, and reshaping the phase of a photon wavefront in real-time and can, thus,...
master thesis 2014
document
Visscher, G. (author)
The spatial resolution of an astronomical telescope is limited by either by the diffraction of light and the amount of aberrations caused in the atmosphere. To increase the diffraction limited resolution, the size of telescopes increases such as the to be build European Extremely Large Telescope (E-ELT). To fully benefit from the increased...
master thesis 2014
document
De Buck, P.B.A. (author)
Lens set-up using PARIS (Parallel ILIAS) Lens set-up State of the art coarse lithographic lens set-up consists of ILIAS, FOCAL and DISTO tests. A proposal is done to phenomenologically represent gain and offset in each of the tests. A data-driven method to construct the model is introduced. This model can be related to a PARIS-based set-up test....
master thesis 2014
document
Van Witteveen, K. (author)
This thesis investigates the applicability of the Probabilistic Inference for Learning COntrol (PILCO) algorithm to large systems and systems with time varying measurement noise. PILCO is a state-of-the-art model-learning Reinforcement Learning (RL) algorithm that uses a Gaussian Process (GP) model to average over uncertainties during learning....
master thesis 2014
document
Dev Sharma, R. (author)
Wind is arguably the most promising source of sustainable energy. However, it is still considered to be an expensive option compared to fossil fuels. Recent developments have achieved significant cost reductions and increased the reliability on wind energy. The main reason for this has been the application of innovative and effective control...
master thesis 2013
document
Agbana, T.E. (author)
Wavelength measurement and control of lasers is of paramount importance and has found vast application in areas such as linear and nonlinear spectroscopy, multichannel wavelength division multiplexing, laser meteorology and applications which involve testing of laser and LED light sources to ensure spectral purity and power distribution. While...
master thesis 2013
Searched for: contributor%3A%22Verhaegen%252C%255C+M.%255C+%255C%2528mentor%255C%2529%22
(1 - 20 of 31)

Pages

List view
Grid view