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van der El, K. (author), Barendswaard, S. (author), Pool, D.M. (author), Mulder, Max (author)In many practical control tasks, human controllers (HC) can preview the trajectory they must follow in the near future. This paper investigates the effects of the length of previewed target trajectory, or preview time, on HC behavior in rate tracking tasks. To do so, a human-in-the-loop experiment was performed, consisting of a combined target...conference paper 2016
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Popovici, A (author), Zaal, P.M.T. (author), Pool, D.M. (author), Mulder, Max (author)This study attempts to partially explain the characteristics of the human perceptual remnant, following Levison’s representation of the remnant as an equivalent observation noise. Eye activity parameters are recorded using an eye tracker in two compensatory tracking tasks in which the visual information is presented using either a first or...conference paper 2016
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- van Duin, Ron (author), De Goffau, W (author), Wiegmans, B. (author), Tavasszy, Lorant (author), Saes, M (author) conference paper 2016
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van der Kruk, E. (author), Schwab, A.L. (author), van der Helm, F.C.T. (author), Veeger, H.E.J. (author)To assist speed skaters in improving their skating performance, we would like to provide them with real time feedback on the orientation of the skate within a single stroke. While of course the forces generated by the skater on the ice determine the acceleration of the skater, the orientation of the skate determines in which direction this...conference paper 2016
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Jamshidi, A. (author), Faghih Roohi, S. (author), Nunez, Alfredo (author), Babuska, R. (author), De Schutter, B.H.K. (author), Dollevoet, R.P.B.J. (author), Li, Z. (author)This paper develops a defect-based risk analysis methodology for estimating rail failure risk. The methodology relies on an evolution model addressing the severity level of rail surface defect, called squat. The risk of rail failure is assessed by analyzing squat failure probability using a probabilistic analysis of the squat cracks. For this...conference paper 2016
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Gasparutto, X. (author), Van Der Graaff, E. (author), van der Helm, F.C.T. (author), Veeger, H.E.J. (author)In baseball, pitchers are the players that are most prone to injury. Most injuries occur at the elbow and shoulder of the throwing upper limb. It is widely accepted that understanding the loading in the joints during pitching is a key factor to prevent injuries. To deepen the understanding of the joint actions this study proposes to split the...conference paper 2016
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Pascoe, J.A. (author), Alderliesten, R.C. (author), Benedictus, R. (author)Measurement of the energy dissipation during fatigue crack growth is used as a technique to gain more insight into the physics of the crack growth process. It is shown that the amount of energy dissipation required per unit of crack growth is determined by Gmax, whereas the total amount of energy available for crack growth in a single cycle is...conference paper 2016
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Read, S.A. (author), Lindhult, Erik (author)Transition of energy systems has been under-theorised. We have argued previously that energy efficiency as a strategy for fossil fuel replacement is inadequate as energy demand is not being reduced by efficiency alone. This paper is intended to elaborate further on the reasons. We require better answers to better questions about the nature of...conference paper 2016
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- Rogova, E.S. (author), Lodewijks, G. (author) conference paper 2016
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de Jong, J. (author), Fokkink, R.J. (author), Olsder, G.J. (author), Schwab, A.L. (author)The optimal pacing strategy of a cyclist in an individual time-trial depends on terrain, weather conditions and the cyclists endurance capacity. Previous experimental and theoretical studies have shown that a suboptimal pacing strategy may have a substantial negative effect. In this paper we express the optimal pacing problem as a...conference paper 2016
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van der Slikke, R.M.A. (author), Berger, Monique (author), Bregman, D.J.J. (author), Veeger, H.E.J. (author)Short sprints are important components of most wheelchair court sports, since being faster than the opponent often determines keeping ball possession or not. Sprinting capacity is best measured during a field test, allowing the athlete to freely choose push strategies adapted to their own wheelchair setting, physical ability, classification...conference paper 2016
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Feirstein (student), D.S. (author), Koryakovskiy, I. (author), Kober, J. (author), Vallery, H. (author)Reinforcement learning is a powerful tool to derive controllers for systems where no models are available. Particularly policy search algorithms are suitable for complex systems, to keep learning time manageable and account for continuous state and action spaces. However, these algorithms demand more insight into the system to choose a...conference paper 2016
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Greidanus, A.J. (author), Delfos, R. (author), Westerweel, J. (author)The flow motions in the turbulent boundary layer between water and a rowing boat initiate a turbulent skin friction. Reducing this skin friction results in better rowing performances. A Taylor-Couette (TC) facility was used to verify the power losses due to velocity fluctuations P<sub>V′</sub> in relation to the total power, as a function of...conference paper 2016
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Mulder, Max (author), Pool, D.M. (author), Abbink, D.A. (author), Boer, E.R. (author), van Paassen, M.M. (author)Manual control cybernetics aims to understand and describe how humans control vehicles and devices, such that more effective human-machine interfaces can be designed. Current cybernetics theory is primarily based on technology and analysis methods developed in the 1960s and has shown to be limited in its capability to capture the full breadth of...conference paper 2016
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Barendswaard, S. (author), Pool, D.M. (author), Mulder, Max (author)While many realistic manual control tasks require human operators to control multiple degrees-of-freedomsimultaneously, our understanding of such multi-axis manual control has not moved far beyond considering it simply as the control of multiple fully-independent axes. This investigation aims to further our understanding of multi-axis control by...conference paper 2016
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Bhoelai, A.K. (author), van Paassen, M.M. (author), Abbink, D.A. (author), Mulder, Max (author)The human neuromuscular system can be seen as a versatile and extremely adaptive actuator. Through co-contraction and reex modulation, the properties of the neuromuscular system can be modified, leading to a change in movement response to externally applied forces. These properties are normally expressed in the form of the neuromuscular...conference paper 2016
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Kuyt, C.B. (author), Greidanus, A.J. (author), Westerweel, J. (author)The objective of this study was to determine the advantage of the application of speedstrips to rowing oars for a lightweight single sculler. The research method comprehended three steps: (1) the analysis of the rowing oar movement, (2) the determination of the change in drag and (3) the composition of a rowing model to establish the...conference paper 2016
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Lindhult, Erik (author), Campillo, J. (author), Dahlquist, E. (author), Read, S.A. (author)Transition towards becoming Energy smart city integrating different areas of energy production, distribution and use in a community requires a spectrum of capabilities. The paper reports on findings from the EU planning project PLEEC, involving six medium sized European cities. The purpose of the paper is to describe innovation capabilities and...conference paper 2016
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van Houwelingen, J. (author), van de Water, W. (author), Kunnen, R.P.J. (author), van Heijst, GJF (author), Clerx, H.J.H. (author)Understanding the power balance of a swimmer, who needs to overcome power losses to drag and to water set in motion, requires detailed insight into the hydrodynamics of the flow around the swimmer. This will be done from a hydrodynamic point of view with techniques familiar from fluid mechanics. One of our objectives is to develop a system to...conference paper 2016
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van Dijk, M.T. (author), van Wingerden, J.W. (author), Ashuri, T. (author), Li, Y. (author), Rotea, M.A. (author)To make wind energy cost competitive with traditional resources, wind turbines are commonly placed in groups. Aerodynamic interaction between the turbines causes sub-optimal energy production. A control strategy to mitigate these losses is by redirecting the wake by yaw misalignment. This paper aims to assess the influence of load variations of...conference paper 2016