摘要
给出了二次系统Ⅲ类方程,当l<0时,极限环集中分布的充分条件,推广了文献[4-5]的结果。
Sufficient conditions of the Ⅲ-type in the quadratic systems is given,when l0 limit cycle of is in concentrated distribution,and the results of references are extended.
出处
《长春工业大学学报》
CAS
2010年第1期115-116,共2页
Journal of Changchun University of Technology
关键词
二次系统
极限环
集中分布
quadratic systems
limit cycle
concentrated distribution.
