20.500.12556/DKUM-26274 Discussion on: "Analysis of control relevant coupled nonlinear oscillatory systems" Analysis of control relevant coupled nonlinear oscillatory systems The paper by I. D. Landau et al. presents an analysis of two structures of coupled van der Pol oscillators done by using the Krylov-Bogoliubov (K-B) averaging method. They devise the K-B method to effectively compute self-excited and externally driven oscillations, respectively on systems presumably subjected to control, where amplitudes and phases are slowly varying functions of time. After they present feedback structures of single and coupled generalized van der Pol equations, respectively, they perform the K-B analysis of these equations, which results in explanation of various regimes of self-excited and externally driven oscillations including the analysis of the combustion instability model. Although the proposed K-B methodmay be considered as a step forward in modeling self-oscillating systems, this discussion wants to show, that problems solved by the K-B method can be treated also in an alternative way. Based on the paper [1], it is obvious that coupled van der Pol oscillators, driven by an external excitation with slowly varying frequency or amplitude, can be analyzed by using Extended Lindstedt- Poincare (EL-P) method with multiple time scales. van der Pol oscillators external excitation multiple time scales true false false Angleški jezik Angleški jezik Neznano 2012-05-31 12:22:13 2012-05-31 12:22:13 2022-04-15 03:41:17 2024-01-03 03:24:07 2008 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 53 12640790 0947-3580 URN:SI:UM:DK:VYKCO96X http://dx.doi.org/10.3166/ejc.14.283-285 1 https://dk.um.si/Dokument.php?lang=slv&id=35239 Fakulteta za strojništvo 0 0 0