简介:本文讨论形如d/dt(x(t)+D(t)x(t-k)=f(t,x(t),x(t-h),u(t))的非线性中立型控制系统函数能控性,给出该类系统的函数能控性和零函数能控性的判定定理,所得结果在实际系统的设计、分析等方面是非常实用的。
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简介:考虑非线性中立型微分差分方程[y(t)+P(t)g(y(t-τ))]′+Q(t)h(y(t-σ))=0的非振动解的渐近性。若无特别申明,本文总假设A函数P(t),Q(t),g(u),h(u)皆为连续函数;B,Q(t)>0;ug(u)>0,uh(u)>0(u≠0);C,g(u)=h(u)=0当且仅当u=0。
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简介:本文致力于研究非线性中立型延迟积分微分方程隐式Euler方法的收缩性。本文中的Lipschitz数是关于变量t的函数,而不是常数,最终能得到其数值解的结果是收缩的。