【摘要】 论述了通过研究特定二次系统的状态函数的零点个数来确定二次系统极限环的个数的方法,与传统的应用庞加莱-本迪克松环域定理的方法相比具有首创新和实用性.更多还原

【Abstract】 In this paper,we research the limit cycle in two-dimensional system by studying the zero points of their state functions,which is more creative and practical when compared with Poincare-Bendixson’s annular region.更多还原