OSCILLATION (Self-) 2)
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An oscillation that appears spontaneously in a system.
This curious phenomenon has been first researched by POINCARÉ. S. DINER describes as follows its characteristics:
- "amplitude and frequency independent of initial conditions;
- "emergence independent of any external periodic stimulation;
- "control, through feedback, upon the energy source, in order to compensate dissipation without influencing amplitude and frequency".
DINER defines an auto-oscillator as : "A system generating non-damped oscillations, sustained by an external energy source, in a nonlinear dissipative way, and whose aspect and properties are determined by the system itself, without dependence from its initial conditions. In such conditions, oscillations can be not merely periodic, but also quasi-periodic and even stochastic. ANDRONOV (in 1929)… showed for the first time the physical existence of an attractor that was not an equilibrium point. Later the concept of attractor was to be amplified up to the emergence of the strange attractor concept, the mathematical form of stochastic self-oscillations" (1992, p.340-1).
This could be considered a kind of thermodynamic autopoiesis!
Categories
- 1) General information
- 2) Methodology or model
- 3) Epistemology, ontology and semantics
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Publisher
Bertalanffy Center for the Study of Systems Science(2020).
To cite this page, please use the following information:
Bertalanffy Center for the Study of Systems Science (2020). Title of the entry. In Charles François (Ed.), International Encyclopedia of Systems and Cybernetics (2). Retrieved from www.systemspedia.org/[full/url]
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