Abstract
Differential-difference equations with multiple delays have applications in a variety of applied fields. We propose a prototype delay model introduced by Uçar involving two delays. Sufficient conditions for the stability of the model are given and used to study chaos. It is observed first time in the literature that the Uçar system shows not only two-scroll but also one-scroll chaotic attractors.
Similar content being viewed by others
References
Braddock, R.D., van den Driessche, P.: On a two lag differential delay equation. J. Austral. Math. Soc. Ser. B. 24, 292–317 (1983)
Ghosh, D., Roy Chowdhury, A., Saha, P.: Multiple delay Rossler system—bifurcation and chaos control. Chaos Solitons Fractals 35, 472–485 (2008)
Cooke, K.L., Yorke, J.A.: Some equations modelling growth processes and gonorrhea epidemics. Math. Biosci. 16, 75–101 (1973)
Uçar, A.: A prototype model for chaos studies. Int. J. Eng. Sci. 40, 251–258 (2002)
Uçar, A.: On the chaotic behaviour of a prototype delayed dynamical system. Chaos Solitons Fractals. 16, 187–194 (2003)
Bhalekar, S.: Dynamical analysis of fractional order Uçar prototype delayed system. Signals Image Video Process. 6(3), 513–519 (2012)
Çelik, V., Demir, Y.: Chaotic dynamics of the fractional order nonlinear system with time delay. Signals Image Video Process. (2013). doi:10.1007/s11760-013-0461-2
Li, X., Ruan, S., Wei, J.: Stability and bifurcation in delay-differential equations with two delays. J. Math. Anal. Appl. 236, 254–280 (1999)
Hayes, N.D.: Roots of the transcendental equation associated with a certain difference-differential equation. J. Lond. Math. Soc. 25, 226–232 (1950)
Li, C.G., Liao, X.F., Yu, J.B.: Hopf bifurcation in a prototype delayed system. Chaos Solitons Fractals 19, 779–787 (2004)
Peng, M.: Bifurcation and chaotic behavior in the Euler method for a Uçar prototype delay model. Chaos Solitons Fractals 22, 483–493 (2004)
Xu, C.: Bifurcations of a delayed prototype model. Int. J. Math. Comput. Sci. 6, 59–63 (2012)
Lonngren, K.E., Bai, E.: On the Uçar prototype model. Int. J. Eng. Sci. 40, 1855–1857 (2002)
http://reference.wolfram.com/mathematica/tutorial/NDSolveExplicitRungeKutta.html
http://reference.wolfram.com/mathematica/tutorial/NDSolveDelayDifferentialEquations.html
Kodba, S., Perc, M., Marhl, M.: Detecting chaos from a time series. Eur. J. Phys. 26, 205–215 (2005)
Acknowledgments
Author is grateful to the anonymous referees for their insightful comments leading to the improvement of the paper.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Bhalekar, S. On the Uçar prototype model with incommensurate delays. SIViP 8, 635–639 (2014). https://doi.org/10.1007/s11760-013-0595-2
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11760-013-0595-2