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Controlling chaos in a model of thermal pulse combustion

 

作者: M. A. Rhode,   R. W. Rollins,   A. J. Markworth,   K. D. Edwards,   K. Nguyen,   C. S. Daw,   J. F. Thomas,  

 

期刊: Journal of Applied Physics  (AIP Available online 1995)
卷期: Volume 78, issue 4  

页码: 2224-2232

 

ISSN:0021-8979

 

年代: 1995

 

DOI:10.1063/1.360138

 

出版商: AIP

 

数据来源: AIP

 

摘要:

We describe methods for automating the control and tracking of states within or near a chaotic attractor. The methods are applied in a simulation using a recently developed model of thermal pulse combustion as the dynamical system. The controlled state is automatically tracked while a parameter is slowly changed well beyond the usual flame‐out point where the chaotic attractor ceases to exist because of boundary crisis. A learning strategy based on simple neural networks is applied to map‐based proportional feedback control algorithms both with and without a recursive term. Adaptive recursive proportional feedback is found to track farther beyond the crisis (flame‐out) boundary than does the adaptive non‐recursive map‐based control. We also found that a continuous‐time feedback proportional to the derivative of a system variable will stabilize and track an unstable fixed point near the chaotic attractor. The positive results suggest that a pulse combustor, and other nonlinear systems, may be suitably controlled to reduce undesirable cyclic variability and extend their useful operating range. ©1995 American Institute of Physics.

 

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