给出一类线性切换系统能控性、能达性的充分必要条件，此类系统的特征是具有相同的系统矩阵和不同的输入矩阵。
The sufficient and necessary condition of controllability and reachability of a class of linear switching systems which has the same systematic matrix and different input matrixes is given.
并给出了非线性半定规划的最优性必要和充分条件。
Finally, optimality necessary and sufficient conditions for nonlinear convex semidefinite programming are proved.
用矩阵不等式给出了模糊反馈增益和模糊观测器增益的存在的充分条件，并将这些条件转化为线性矩阵不等式（LMI）的可解性。
Sufficient conditions for the existence of fuzzy state feedback gain and fuzzy observer gain are derived through the numerical solution of a set of coupled linear matrix inequalities(LMI).
本文讨论控制器能量受限下一类无限维线性系统的精确零能控性问题，得到了这类能控性的充分必要条件。
In this paper the problem of the controllability of a class of infinite dimensional linear systems with control energy constraint is discussed.
首先根据特征值判据，给出单乘性区间线性系统鲁棒稳定性的充分必要条件。
Firstly, according to eigenvalue criterion, the robust stability necessary and sufficient conditions of single-multiplication interval linear systems are given.
本文讨论了一类半线性偏差分方程解的振动性，得到了这类方程解的振动性的一些充分条件。
This paper is concerned with oscillation of solutions of a class of nonlinear partial difference equations. Some sufficient conditions of oscillation for the equations have been obtained.
在假设数据传输存在时延的情况下，主要利用线性矩阵不等式的方法，给出了群体达到一致性的充分条件。
Under the assumption of time-delay during data transmission, we give the sufficient condition of agents achieving consensus stability using approach of linear matrix inequalities.
给出一类线性切换系统能控性、能达性的充分必要条件 ，此类系统的特征是具有相同的系统矩阵和不同的输入矩阵。
The uncertainties of the linear switched systems with polytopic perturbations are formed by a convex combination of several known constant matrixes.
本文利用整体反函数理论，研究了半线性二阶微分方程周期边值问题，给出了周期解存在唯一性的充分条件。
The existence and uniqueness about semilinear second-order differential equation are established by using global inverse function theorems.
利用时滞脉冲积分不等式，给出了一类非线性的脉冲时滞微分方程的解有界性的充分条件。
Sufficient conditions for boundedness of solutions of nonlinear delay differential equations with impulses are established by using impulsive integral inequalities with a deviation.
该控制策略充分利用了模糊逻辑对非线性的逼近性和神经控制自适应的特点。
The strategy made full use of the nonlinear approximation of fuzzy logic and the self-adaptability of neural control.
基于稳定性的频域分析技术，研究了线性中立型时滞系统渐近稳定的充分性条件。
Based on the frequency-domain techniques to analyze the stability of a system, this paper deals with the sufficient conditions of the asymptotic stability of linear neutral delay systems.
本文研究了一类一阶变系数非线性滞后型微分方程解的振动性，得到这类方程仅有振动解的充分条件。
The study is made on the oscillation of a class of the first order nonlinear retarded differential equations with variable coefficients, and the sufficient conditions are obtained.
研究了三阶非线性脉冲时滞微分方程解的振动性与渐近性，得到了一些充分判据。
The oscillation and asymptotic behaviors of three order nonlinear functional differential equation with impulses are investigated, and some sufficient conditions are obtained.
研究了一类具有多变滞量的高阶非线性中立型差分方程的振动性，给出了此类方程振动的一个充分条件。
The oscillation for a class of higher order nonlinear neutral difference equations with several delay arguments is studied. A sufficient condition for the oscillation of the equations is obtained.
本文研究一阶非线性中立型泛函微分方程的振动性。得到了该方程振动的充分性判别法则。
This paper deals with the oscillation of the first order nonlinear neutral type functional differential equation, and obtains sufficient criterion of the equation oscillation.
讨论一类抽象半线性控制系统，引入新的充分条件，并证明该系统的近似可控制性。
We study about the approximate controllability of an abstract semilinear control system. By introducing a new sufficient condition, we proved the approximate controllability of the system.
本文用不同于原有文献的方法研究了一类偶数阶中立型非线性微分方程的振动性，得到了方程振动的几个新的充分条件。
In this paper, we consider the oscillation of a class of even order nonlinear neutral differential equations, some new sufficient conditions are established.
首先，利用范数理论研究受控混沌系统的收敛性，并导出受控系统收敛的充分条件和线性反馈增益矩阵的选取原则；
Firstly, we use norm theory to research the controlled chaotic systems and lead to some sufficient conditions for system convergence and the choice of state feedback gain matrixes.
本文考虑二维区域上的一类非线性抛物问题解的熄灭性，给出了一个导致解熄灭的与区域相关的充分条件。
This paper deals with the extinction of solutions on two dimension parabolic problems. A sufficient condition interrelated with the domain which leads to extinction of the solutions is given.
我们给出了非线性耦合的一般形式，并分析了混沌同步的充分条件，其中涉及到了原始系统的有界性。
We give out the ordinary nonlinear coupling terms and deduce the sufficient conditions of chaos synchronization, which require the drive systems boundedness.
由此得出了判别重特征线性偏微分算子亚椭园性和局部可解性的若干充分条件。
From this, we obtain some sufficient conditions for hypoellipticity and local solvability of those operators.
基于稳定性的频域分析技术，研究了线性中立型时滞系统渐近稳定的充分性条件。
This paper is concerned with Robust stabilization problem for linear neutral delay systems subject to parameter uncertainty.
该文获得了一类具有连续偏差变元的二阶非线性偏泛函微分方程的振动性的充分性条件。
In this paper, we study a class of boundary value problems of even order nonlinear neutral partial functional differential equations with continuous distribution delay.
苎麻纱线性能的一致性差，易发生非均匀断裂，不能充分发挥其性能优势。
Consistency in tensile strength of ramie yarn is poor, heterogeneous break of ramie yarn is easy occurred.
采用子空间中支撑泛函延拓的方法，构造出在复线性空间任意点上的复支撑泛函；确定在同一支撑点上复支撑泛函的数值域，从而得到复支撑泛函具有唯一性的充分必要条件。
This paper investigates the existence of complex support functional of a convex function in complex linear spaces and the complex numerical ranges of the complex support functionals on a point.
利用变形边界函数法与上下解方法，研究了一类具非线性边界条件的半线性时滞微分方程边值问题，得到了此边值问题解的存在性的充分条件。
The asymptotic behavior for a class of higher-order delay partial differential equations be investigated in this paper, some asymptotic behavior be established, which expanded some references.
利用变形边界函数法与上下解方法，研究了一类具非线性边界条件的半线性时滞微分方程边值问题，得到了此边值问题解的存在性的充分条件。
The asymptotic behavior for a class of higher-order delay partial differential equations be investigated in this paper, some asymptotic behavior be established, which expanded some references.
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