TY - JFULL AU - Mohammad Taghi Darvishi and Samad Kheybari PY - 2011/3/ TI - Application of He’s Parameter-Expansion Method to a Coupled Van Der Pol oscillators with Two Kinds of Time-delay Coupling T2 - International Journal of Mathematical and Computational Sciences SP - 144 EP - 150 VL - 5 SN - 1307-6892 UR - https://publications.waset.org/pdf/7039 PU - World Academy of Science, Engineering and Technology NX - Open Science Index 50, 2011 N2 - In this paper, the dynamics of a system of two van der Pol oscillators with delayed position and velocity is studied. We provide an approximate solution for this system using parameterexpansion method. Also, we obtain approximate values for frequencies of the system. The parameter-expansion method is more efficient than the perturbation method for this system because the method is independent of perturbation parameter assumption. ER -