A bifurcation study of the nonlinear dynamics in a rod-type plasma torch

Der-Cherng Liaw*, Shih Tse Chang, Heng Yi Li, Hao Jan Huang, Chin Ching Tzeng

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


The nonlinear dynamical analysis of a rod-type plasma torch was presented in this paper. Local bifurcation analysis for a class of the third-order nonlinear systems was first studied to solve for the existence conditions of both stationary and Andronov-Hopf bifurcations. It was then applied to the dynamical analysis of the rod-type plasma torch. Both analytical results and numerical simulations were found to agree with those obtained by Ghorui et al, (2000). Moreover, the scenarios for the possible nonlinear behavior in the plasma torch dynamics were also obtained with respect to the variation of system parameters via the numerical simulations, which might provide a guide for finding nonlinear phenomena in the practical application of the plasma torch.

Original languageEnglish
Pages (from-to)129-134
Number of pages6
JournalJournal of Aeronautics, Astronautics and Aviation
Issue number2
StatePublished - 1 Jan 2009


  • Bifurcation
  • Chaotic behavior
  • Nonlinear systems
  • Rod-type plasma torch

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