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Updated: Aug 19, 2026

Force and Position Control in Humans - The Role of Augmented Feedback
Published on: June 19, 2016
Experimental relevance of global properties of time-delayed feedback control
Clemens von Loewenich1, Hartmut Benner, Wolfram Just
1Institute for Solid State Physics, Darmstadt University of Technology, Hochschulstrasse 6, D-64289 Darmstadt, Germany.
Abstract:
We show by means of theoretical considerations and electronic circuit experiments that time-delayed feedback control suffers from severe global constraints if transitions at the control boundaries are discontinuous. Subcritical behavior gives rise to small basins of attraction and thus limits the control performance. The reported properties are, on the one hand, universal since the mechanism is based on general arguments borrowed from bifurcation theory and, on the other hand, directly visible in experimental time series.
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