Searched for: collection%3Air
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Bijl, H.J. (author)
Wind turbines are growing bigger to becomemore cost-efficient. This does increase the severity of the vibrations that are present in the turbine blades, both due to predictable effects like wind shear and tower shadow, and due to less predictable effects like turbulence and flutter. If wind turbines are to become bigger and more cost-efficient,...
doctoral thesis 2018
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Peri?, V. (author)
The power system industry has been going through dynamic infrastructural and operational changes in recent years that have caused more prominent lightly damped electromechanical oscillations. Real-time monitoring of electromechanical oscillations is of great significance for power system operators; to this aim, software solutions (algorithms)...
doctoral thesis 2016
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Van Drunen, P. (author)
doctoral thesis 2015
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Samadi, A. (author)
Long term supporting schemes for photovoltaic (PV) system installation have led to accommodating large numbers of PV systems within load pockets in distribution grids. High penetrations of PV systems can cause new technical challenges, such as voltage rise due to reverse power flow during light load and high PV generation conditions. Therefore,...
doctoral thesis 2014
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Dankers, A.G. (author)
Systems in engineering such as power systems, telecommunication systems, and distributed control systems are becoming more complex and interconnected. Many of these systems are part of the foundation of modern society and their seamless operation is paramount. However, the increasing complexity and size of the systems poses real engineering...
doctoral thesis 2014
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Forbes, P.A. (author)
Head-neck stabilization is inherently challenging even when stationary, requiring constant vigilance to counter the downward pull of gravity. It involves a highly complex biomechanical system comprised of a large mass (the head) balanced on top of seven vertebrae (the neck), that are in turn connected to a moving base (the torso). This multi...
doctoral thesis 2014
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Van der Veen, G.J. (author)
In the next decades wind energy is expected to secure a firm share of the total energy production capacity in many countries. To increase competitiveness of wind power with other power sources it is essential to lower the cost of wind energy. Given the design of a turbine, this objective can be attained in several ways, for instance by...
doctoral thesis 2013
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Mugge, W. (author)
Complex Regional Pain Syndrome (CRPS) is a disabling syndrome associated with sensory (e.g., burning pain, allodynia, hyperalgesia), autonomic (e.g., edema, skin color and temperature changes), and motor impairments (e.g., tremor, myoclonus, dystonia). Approximately 25% of the patients with CRPS develop fixed dystonia which is characterized by...
doctoral thesis 2011
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Blom, R.S. (author)
The process of micro-milling is a promising technology for the fabrication of micro-parts with arbitrary 3D features in a wide range of materials. However, as a result of the reduced dimensions, the susceptibility of the process for machine tool errors and vibrations is higher, having adverse effects on accuracy and surface quality of the...
doctoral thesis 2011
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Sonneveldt, L. (author)
The main goal of this thesis is to investigate the potential of the nonlinear adaptive backstepping control technique in combination with online model identification for the design of a reconfigurable flight control system for a modern fighter aircraft. Adaptive backstepping is a recursive, Lyapunov-based, nonlinear design method, that makes use...
doctoral thesis 2010
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Van Wingerden, J.W. (author)
Active control is becoming more and more important for the wind energy community. If we compare the 'old' stall regulated turbines with today's individual pitch controlled turbines we see that the loads can be considerably reduced, leading to lighter or larger turbines. However, limited actuator bandwidth and component fatigue impose significant...
doctoral thesis 2008
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Douma, S.G. (author)
doctoral thesis 2006
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Amisigo, B.A. (author)
In this thesis, a riverflow modelling framework developed for monthly riverflow prediction in the 400,000 km2 Volta Basin of West Africa is presented. By analysing available catchment rainfall, runoff and potential evapotranspiration series in the basin using methods such as correlation plots, autoregressive (AR) and autoregressive with...
doctoral thesis 2006
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De Vlugt, E. (author)
Visco-elasticity of joints is important for the maintenance of the human body posture and can in two manners be regulated. By means of cocontraction of antagonistic muscle groups and by neural reflexive feedback of muscle length and muscle strength, measured both by means of sensors in the muscles. The impact of the reflexive regulation is...
doctoral thesis 2004
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Schouten, A.C. (author)
Proprioceptive reflexes play an important role during the control of movement and posture. Disturbed modulation of proprioceptive reflexes is often suggested as the cause for the motoric features present in neurological disorders. In this thesis methods are developed and evaluated to quantify proprioceptive reflexes in vivo during postural...
doctoral thesis 2004
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Van Staveren, W.H.J.J. (author)
The response of aircraft to stochastic atmospheric turbulence plays an important role in aircraft-design (load calculations), Flight Control System (FCS) design and flight-simulation (handling qualities research and pilot training). In order to simulate these aircraft responses, an accurate mathematical model is required. Two classical models...
doctoral thesis 2003
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Van der Klauw, A.C. (author)
doctoral thesis 1995
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Hakvoort, R.G. (author)
doctoral thesis 1994
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De Vries, D.K. (author)
doctoral thesis 1994
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Bongers, P.M.M. (author)
doctoral thesis 1994
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