Application of the multistage homotopy-perturbation method to solve a class of hyperchaotic systems

Due to the complex dynamical behaviors of hyperchaotic system, it is very difficult to gain its valid analytical solution by using many existing methods. In this paper, the multistage homotopy-perturbation method is first employed to solve a class of hyperchaotic systems. The method is only a simple modification of the standard homotopy-perturbation method, in which it is treated as an algorithm in a sequence of small intervals (i.e. time step) for finding accurate approximate solutions to the corresponding hyperchaotic systems. Finally, some numerical comparisons among the multistage homotopy-perturbation method, the standard homotopy-perturbation method and the Runge-Kutta method have been made, which manifest that the modified method is a very accurate and effective algorithm to solve the hyperchaotic systems. © 2009 Elsevier Ltd. All rights reserved.