Figure 9: The projection of the chaotic solution of the drive GDS system (2.19) on the U − j plane. Figure 10: The chaotic behavior of the U coordinate of system (2.19). References [1] M. U. Akhmet and M. O. Fen, “Entrainment by chaos,” Journal of Nonlinear Science $_{24}$, 411-439 (2014). [2] H. D. I. Abarbanel, N. F. Rulkov, and M. M. Sushchik, “Generalized synchronization of chaos: The auxiliary system approach,” Phys. Rev. E $_{53}$, 4528-4535 (1996). [3] D. D. Šijačić, U. Ebert, and I. Rafatov, “Period doubling cascade in glow discharges: Local versus global differential conductivity,” Phys. Rev. E $_{70}$, 056220 (2004). [4] N. F. Rulkov, M. M. Sushchik, L. S. Tsimring, and H. D. I. Abarbanel, “Generalized synchronization of chaos in directionally coupled chaotic systems,” Phys. Rev. E $_{51}$, 980-994 (1995). [5] L. Kocarev and U. Parlitz, “Generalized synchronization, predictability, and equivalence of unidi- rectionally coupled dynamical systems,” Phys. Rev. Lett. $_{76}$, 1816-1819 (1996). [6] B. R. Hunt, E. Ott, and J. A. Yorke, “Differentiable generalized synchronization of chaos,” Phys. Rev. E $_{55}$, 4029-4034 (1997). [7] U. S. Freitas, E. E. N. Macau, and C. Grebogi, “Using geometric control and chaotic synchronization to estimate an unknown model parameter,” Phys. Rev. E $_{71}$, 047203 (2005). 15 2.5 3 3.5 4 x 10 6 8 10 12 14 16 time U 8 10 12 14 16 18 0 0.2 0.4 0.6 0.8 1 x 10 −3 U j