In this paper we describe a method for continuing periodic solution bifurcations in periodic delay differential equations. First, the notion of characteristic matrices of periodic orbits is introduced and equivalence with the monodromy operator is proved. An alternative formulation of the characteristic matrix is given, which can efficiently be computed. Defining systems of bifurcations are constructed in a standard way including the characteristic matrix and its derivatives. For following bifurcation curves in two parameters, the pseudo-arclength method is used combined with Newton iteration. As a test example, an interrupted machining model is analyzed.
|Publication status||Unpublished - 2004|
Sponsorship: The authors thank Bernd Krauskopf, Kirk Green and Gabor Orosz for helpful discussion. During the perparation of this work the first author was supported by the Hungarian Eotvos scholarship and the Fulbright Scholarship. The second author
was supported by the Hungarian National Science Foundation under grant no. OTKA T043368.
- periodic solutions
- delay-differential equations