查询词典 sufficient condition

Without using Lie derivative and Lie bracket operation of differential geometry , we only use the algebra method to give a sufficient condition of single input exact feedback linearizable bilinear systems.

摘 要 研究了单输入的双线性系统的精确线性化及其鲁棒控制器设计问题，避免了用微分几何的李导数、李括号的复杂运算，只用纯代数的方法给出了一般单输入双线性系统精确线性化的充分条件。

This results in analytical expressions for the sufficient condition of system stability, calculating time and circuit parameter.

系统地分析了〓模型的工作特性，从系统稳定理论证明了该电路的稳定性，同时也从电路的角度，用解析的方法分析了运放有限增益，输入电容对电路的动态性能、运算精度的影响，得出了系统稳定的充分条件和计算时间与电路参数的解析表达式。

In this paper, by virtue of some relevant results of Fourier Analysis and Cauchy Inequality, we begin with working on the necessary and sufficient condition for the existence of the periodic solution to a kind of compound-type linear periodical system with constant coefficients and periodical force term f.

高存臣 ，唐瑞娜，阎庆旭本文首先利用Fourier分析的有关结论和Cauchy不等式，对一类具有滞后与超前偏差变元的n阶常系数混合型线性周期系统周期解存在唯一性的充要条件进行了讨论。

So, a necessary and sufficient condition for the system to be stable is that the roots of the characteristic equation have negative real part.

因此，系统稳定的一个必要充分条件是特性方程的根有负的实部。

So, a necessary and sufficient condition for the system to be stable is that the roots of the characteristic equation have negative real parts.

所以，系统稳定的一个充要条件为：系统的特征根具有负实部。

A sufficient condition that characteristic exponent can be assigned arbitrarily for linear periodic system is also attained in the paper.

文章还给出了一个线性周期系统特征指数可以任意配置的充分条件。

In this paper, a sufficient and necessary condition such that the Ricci form of continuous loop group s is closed is given.

本文给出了连续环群的Ricci形式是闭的充分必要条件。

A sufficient condition for quadratic stability of fuzzy closed loop system is given in terms of linear matrix inequalities.

但是对于实际中广泛存在的非线性离散系统的保成本控制问题还没有得到充分的研究。

We give some examples of BiFrobenius algebras based on the extensions of algebras and coalgebras . Let H be a bialgebra of finite dimension . Then T= H⊕H* has an algebra structure and a coalgebra structure also . We discuss the properties of T , and get the necessary and sufficient condition for T to be a BiFrobenius algebra .

然后根据代数余代数的平凡扩张给出一类BiFrobenius代数的例子，设H是有限维双代数， T= H⊕H*既有代数结构也有余代数结构，研究T的性质，给出了T成为BiFrobenius代数的充要条件，即定理3.9。

Using an aggregation matrix with full column rank to map the on-line optimization variable sequence into a new one, the number of on-line optimization variables is cut down without reducing the control horizon. A sufficient condition is presented to check whether the control variable sequence can be aggregated.

通过一个列满秩的集结矩阵将维数较小的控制变量序列映射成在线优化变量序列，在不缩短控制时域的情况下，降低了在线优化变量的个数。

But GST= 0.156, Nm=1. 588. As a result, the foundation of Youyongchi Avicennia marina population was the result of the migration of hypocotyles and human factors.

这项工作可以为海岸防护林中新引进种类的判定以及为研究种群建立者效应方法的确定提供科学依据。

The two-dimensional CDRC-ADI-FDTD update equations for collision unmagnetized plasma are induced. The unconditional stability of the CDRC-ADI-FDTD formulation for collision unmagnetized plasma is obtained by the examples.

推导了碰撞非磁化等离子体中的二维CDRC-ADI-FDTD迭代公式，并用算例验证了碰撞非磁化等离子体CDRC-ADI-FDTD算法也是无条件稳定的。