Response of laboratory plasma influenced by a feedback loop to external force | Zendy

T Fukuyama | Zendy; Masahiro Omoto | Zendy

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Response of laboratory plasma influenced by a feedback loop to external force

Author(s) -

T Fukuyama,

Masahiro Omoto

Publication year - 2021

Publication title -

progress of theoretical and experimental physics

Language(s) - English

Resource type - Journals

ISSN - 2050-3911

DOI - 10.1093/ptep/ptab076

Subject(s) - physics , chaotic , plasma , nonlinear system , feedback loop , loop (graph theory) , orbit (dynamics) , control theory (sociology) , feedback control , sensitivity (control systems) , intensity (physics) , mechanics , classical mechanics , optics , control (management) , aerospace engineering , computer science , quantum mechanics , control engineering , mathematics , computer security , combinatorics , artificial intelligence , electronic engineering , engineering

This study experimentally examines the sensitivity of laboratory plasma influenced by a feedback loop to applied external force, with the objective of gaining insight into chaos control in plasma. The ionization waves in laboratory plasma are adopted as the medium of a typical nonlinear system. In the case of a system without the influence of feedback (defined as system A), the orbit of the chaotic system changes to a periodic one as the intensity of the applied external force increases. In the case of a system with the influence of feedback (defined as system B), the chaotic orbit changes to a periodic one by the application of external force with lower intensity (approximately two-thirds) compared to system A. This reveals that the feedback loop enhances the response of the system to external forces.

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