Effect of subcritical excitation of oscillations in stochastic systems with time delay. Part II. Control of fluid equilibrium

Bratsun D.A., Zyuzgin A.V.
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The problem of active control of the mechanical equilibrium of an inhomogeneously heated fluid in a thermosyphon is studied theoretically and experimentally. The control is performed by using a feedback subsystem which inhibits convection by changing the orientation of thermosyphon in space. It is shown that excess feedback leads to the excitation of oscillations which are related to a delay in the controller work. In the presense of noise, the oscillations arise even when deterministic description predicts stationary behaviour. The experimental data and theory are in good agreement.

Keywords: time delay, stochastic systems, oscillations, control, convection
Citation in English: Bratsun D.A., Zyuzgin A.V. Effect of subcritical excitation of oscillations in stochastic systems with time delay. Part II. Control of fluid equilibrium // Computer Research and Modeling, 2012, vol. 4, no. 2, pp. 369-389
Citation in English: Bratsun D.A., Zyuzgin A.V. Effect of subcritical excitation of oscillations in stochastic systems with time delay. Part II. Control of fluid equilibrium // Computer Research and Modeling, 2012, vol. 4, no. 2, pp. 369-389
DOI: 10.20537/2076-7633-2012-4-2-369-389
URL: http://crm-en.ics.org.ru/journal/article/1896/
Creative Commons License This work is licensed under a Creative Commons Attribution-NoDerivs 3.0 Unported License.
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