Controlling drift-wave turbulence using time-delay and space-shift autosynchronization feedback.
Drift-wave turbulence control in a one-dimensional nonlinear drift-wave equation driven by a sinusoidal wave is considered. We apply time-delay and space-shift feedback signals, to suppress turbulence. By using global and local pinning strategies, we show numerically that the turbulent state can be controlled to periodic states effectively if appropriate time-delay length and space-shift distance are chosen. The physical mechanism of the control scheme is understood based on the energy-minimum principle.
Tang
Guoning
G
Department of Physics, Beijing Normal University, China.
He
Kaifen
K
Hu
Gang
G