Bifurcations, chaos and control of chaos in spin-wave instabilities

1992 ◽  
Vol 104-107 ◽  
pp. 1041-1042 ◽  
Author(s):  
Antonio Azevedo ◽  
Sergio M. Rezende
Keyword(s):  
Spin Wave ◽  
Control Of Chaos ◽  
Wave Instabilities ◽  
And Control

MULTI-FRACTALS OF STRANGE ATTRACTORS IN PARALLEL-PUMPED SPIN-WAVE INSTABILITIES

1988 ◽  
Vol 49 (C8) ◽  
pp. C8-1599-C8-1600
Author(s):  
K. Nakamura ◽  
M. Mino ◽  
H. Yamazaki
Keyword(s):  
Spin Wave ◽  
Strange Attractors ◽  
Wave Instabilities

scholarly journals Neural Networks for Prediction and Control of Chaotic Fluidized Bed Hydrodynamics

Fractals ◽  
1997 ◽  
Vol 05 (03) ◽  
pp. 523-530 ◽  
Author(s):  
R. Bakker ◽  
R. J. de Korte ◽  
J. C. Schouten ◽  
C. M. Van Den Bleek ◽  
F. Takens
Keyword(s):  
Fluidized Bed ◽  
Prediction Error ◽  
Control Of Chaos ◽  
Short Term ◽  
Prediction And Control ◽  
Short Term Prediction ◽  
Capacitance Tomography ◽  
And Control ◽  
Dynamic Invariants ◽  
Tomography Data

A neural-network-based model that has learnt the chaotic hydrodynamics of a fluidized bed reactor is presented. The network is trained on measured electrical capacitance tomography data. A training algorithm is used that does not only minimize the short-term prediction error but also the information needed to synchronize the model with the real system. This forces the model to focus more on learning the longer term dynamics of the system, expressed in the average multi-step-ahead prediction error and dynamic invariants such as correlation entropy and dimension. The availability of the model is an important step towards control of chaos in gas-solid fluidized beds.

Chaotic Dynamics in Spin-Wave Instabilities

1992 ◽  
pp. 129-155 ◽  
Author(s):  
H. Benner ◽  
F. Rödelsperger ◽  
G. Wiese
Keyword(s):  
Spin Wave ◽  
Chaotic Dynamics ◽  
Wave Instabilities

Phonon-Pumped Spin-Wave Instabilities

1964 ◽  
Vol 13 (21) ◽  
pp. 614-616 ◽  
Author(s):  
H. Matthews ◽  
F. R. Morgenthaler
Keyword(s):  
Spin Wave ◽  
Wave Instabilities
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