Search Results - "Witvoet, G."

Performance analysis of reset control systems by Aangenent, W. H. T. M., Witvoet, G., Heemels, W. P. M. H., van de Molengraft, M. J. G., Steinbuch, M.

“…In this paper we present a general linear matrix inequality‐based analysis method to determine the performance of a SISO reset control system in both the ℒ︁2…”
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Real-time wavelet detection of crashes in limit cycles of non-stationary fusion plasmas by van Berkel, M., Witvoet, G., de Baar, M.R., Nuij, P.W.J.M., ter Morsche, H.G., Steinbuch, M.

“…► We propose a new wavelet-based method for accurate and robust detection of limit cycle crashes in fusion plasmas. ► The method is optimized for real-time…”
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A new mechanism for sawtooth period control by Lauret, M., Felici, F., Witvoet, G., Goodman, T., Vandersteen, G., Westerhof, E., Steinbuch, M., Sauter, O., de Baar, M.

“…Experiments and simulations show that the sawtooth period can be influenced and precisely tuned by modulated ECCD power…”
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The mechatronic architecture and design of the High-Dynamic Double-Crystal Monochromator for Sirius light source by Geraldes, R.R., Witvoet, G., Vermeulen, J.P.M.B.

“…The High-Dynamic Double-Crystal Monochromator (HD-DCM) has been in development since 2015 for X-ray beamlines of Sirius, the 4th-generation light source at the…”
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Predictive modeling through Dynamic Error Budgeting applied to the High-Dynamic Double-Crystal Monochromator for Sirius light source by Geraldes, R.R., Moraes, M.A.L., Witvoet, G., Vermeulen, J.P.M.B.

“…To address recent and more stringent nanometer-level requirements in positioning stability, the High-Dynamic Double-Crystal Monochromator (HD-DCM) has been in…”
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Key Challenges and Results in the Design of Cubesat Laser Terminals, Optical Heads and Coarse Pointing Assemblies by Dresscher, M., Human, J. D., Witvoet, G., van der Heiden, N., den Breeje, R., Kuiper, S., Fritz, E. C., Korevaar, C. W., van der Valk, N. C. J., de Lange, T. J., Saathof, R., Doelman, N., Crowcombe, W. E., Duque, C. M., de Man, H.

“…The anticipated capacity benefit of optical satellite communications has triggered a cascade of technology developments. In this paper, we present three such…”
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Relative validity of different methods to assess body composition in apparently healthy elderly women by Broekhoff, C, Voorrips, L E, Weijenberg, M P, Witvoet, G A, van Staveren, W A, Deurenberg, P

“…Body composition was assessed by means of densitometry, anthropometry and bioelectrical impedance in 28 healthy, elderly females, aged 67-78 years. Underwater…”
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Closed loop control of the sawtooth instability in nuclear fusion by Witvoet, G, Steinbuch, M, Westerhof, E, Doelman, N J, de Baar, M R

“…In nuclear fusion the sawtooth instability is an important plasma phenomenon, having both positive and negative effects on the tokamak plasma. Control of its…”
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Robust adaptive control of the sawtooth instability in nuclear fusion by Bolder, J. J., Witvoet, G., de Baar, M. R., van de Wouw, N., Haring, M. A. M., Westerhof, E., Doelman, N. J., Steinbuch, M.

“…The sawtooth instability is a repetitive phenomenon occurring in plasmas of tokamak nuclear fusion reactors. Experimental studies of these instabilities and…”
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Real-time period determination for relaxation oscillators using wavelets by van Berkel, M., Witvoet, G., de Baar, M. R., Nuij, P. W. J. M., ter Morsche, H. G., Steinbuch, M.

“…In this article an algorithm for optimized realtime sensing of crashes for control purposes is presented. The algorithm is based on time-scale wavelet theory…”
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Control oriented modeling and simulation of the sawtooth instability in nuclear fusion tokamak plasmas by Witvoet, G., Westerhof, E., Steinbuch, M., Doelman, N.J., de Baar, M.R.

“…Tokamak plasmas in nuclear fusion are subject to various instabilities. A clear example is the sawtooth instability, which has both positive and negative…”
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An LMI-based L2 gain performance analysis for reset control systems by Aangenent, W.H.T.M., Witvoet, G., Heemels, W.P.M.H., van de Molengraft, M.J.G., Steinbuch, M.

“…In this paper we present a general LMI-based analysis method to determine an upperbound on the L 2 gain performance of a reset control system. These computable…”
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H2 performance analysis of reset control systems by Witvoet, G., Aangenent, W.H.T.M., Heemels, W.P.M.H., van de Molengraft, M.J.G., Steinbuch, M.

“…To overcome fundamental limitations of linear controllers, reset controllers were proposed in literature. Since the closed loop system including such a reset…”
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Control of sawteeth and neo-classical tearing modes in tokamaks using electron cyclotron waves by de Baar, M. R., Bongers, W. A., van Berkel, M., Doelman, N. J., Hennen, B. A., Nuij, P., Oosterbeek, J. W., Steinbuch, M., Westerhof, E., Witvoet, G.

“…Resistive magneto-hydrodynamic instabilities are expected to limit the performance of nuclear fusion reactors. Prime examples are the sawtooth instability and…”
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