Stabilizing unstable periodic orbits in reaction-diffusion systems by global time-delayed feedback control

Equadiff 99 ◽  
2000 ◽  
pp. 1311-1313 ◽  
Author(s):  
S.M. Zoldi ◽  
G. Franceschini ◽  
S. Bose ◽  
E. Schöll
Keyword(s):  
Feedback Control ◽  
Periodic Orbits ◽  
Reaction Diffusion ◽  
Delayed Feedback ◽  
Delayed Feedback Control ◽  
Unstable Periodic Orbits ◽  
Reaction Diffusion Systems ◽  
Diffusion Systems ◽  
Global Time ◽  
Time Delayed Feedback

scholarly journals Travelling fronts in time-delayed reaction–diffusion systems

2019 ◽  
Vol 377 (2153) ◽  
pp. 20180127 ◽  
Author(s):  
Jan Rombouts ◽  
Lendert Gelens ◽  
Thomas Erneux
Keyword(s):  
Reaction Diffusion ◽  
Delayed Feedback ◽  
Delay Systems ◽  
Wave Shape ◽  
Delayed Reaction ◽  
Reaction Diffusion Systems ◽  
Diffusion Systems ◽  
Speed Up ◽  
Travelling Fronts ◽  
Time Delayed Feedback

We review a series of key travelling front problems in reaction–diffusion systems with a time-delayed feedback, appearing in ecology, nonlinear optics and neurobiology. For each problem, we determine asymptotic approximations for the wave shape and its speed. Particular attention is devoted to their validity and all analytical solutions are compared to solutions obtained numerically. We also extend the work by Erneux et al. (Erneux et al. 2010 Phil. Trans. R. Soc. A 368 , 483–493 ( doi:10.1098/rsta.2009.0228 )) by considering the case of a slowly propagating front subject to a weak delayed feedback. The delay may either speed up the front in the same direction or reverse its direction. This article is part of the theme issue ‘Nonlinear dynamics of delay systems’.

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