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Based on our previous work for 2-dimensional systems, this paper introduces a method for computing focal values of a class of 3-dimensional systems, for which the Maple procedures are presented in the Appendix. Using the –order focal values computation, it is shown that a generalized Moon-Rand system with fifth-order perturbation can have 4 small-amplitude limit cycles around an equilibrium. The methodology developed in this paper can be used to consider bifurcation of limit cycles in higher-dimensional systems.
How to Cite this Article:
Bo Sang, Qin-Long Wang, Brigita Fercec, Four limit cycles in a generalized Moon-Rand system with fifth-order perturbation, Journal of Nonlinear Functional Analysis 2016 (2016), Article ID 14.