简介:Inthispaper,westudytheglobalasymptotiestabilityofthezerosolutionofageneralizedLienard'ssystem{x^.=φ(y)y^.=-f(x)φ(y)-g(x)byconstructinganewLiapunovfunction.Thesufficientandneoessaryconditionsforglobalasymptoticstabilityundergivenconditionsareobtained.
简介:本文研究两类稳定性定理.对LaSalle不变原理做更加合理的改进.研究了Lyapunov直接法,得到了改进的比较原理,并加以证明,最后应用到实例中.