稳定性

Results showed that when the particle size distribution of antifoam emulsion is in the range of 2~30μm,and D50 is in the range of 3~15μm,the antifoam emulsion has excellent breaking and inhibiting foam performance,temperature re.

制备了有机硅消泡剂乳液，探讨了乳液不同的粒径分布范围对消泡性能、耐高温稳定性和稀释稳定性等的影响，确定了合适的粒径范围。

Because of the weakened strata, joints and fabric, in many instances, breakage by lowered strength or unsteady along the joints and fabric is the antinational problem in underground space stability research.

虽然岩石强度的大小对岩体的强度及安全稳定性起决定性作用，但在结构和构造面的影响下岩体的强度及安全稳定性受到极大的削弱。

Large varation on the interfacial properties between asphaltene model oil and water is observed when the pH of water phase is different.

取等量的沥青质配制成的模型油乳状液的稳定性与该原油乳状液稳定性有一一对应关系。

By analyzing the distribution of roots of the associated characteristic equation, its linear stability of the zero equilibrium is investigated.

在分析平衡解稳定性时，首先利用Yongli Song中的变量代换方法化简模型，再分析其对应线性方程的特征根分布来确定平衡解的稳定性，其中运用了Cooke和Grossman写的引理。

The control architecture and associated error equation are built for adaptive output feedback control. Then, a stable weight adjust rule for the no-line NN is derived by Lyapunov theory, thus assuring the stability of the closed-loop system.

NN的在线补偿规律由Lyapunov稳定性方法得到，保证了系统的稳定性，可以有效补偿模型参数不确定和未建模动态引起的控制偏差。

It includes stability analysis and control of gyroscopic system, analog controller optimization, stability analysis of an active magnetic bearing rotor system based on a full-order or a reduced-order observer, and identification of dynamic coefficients of asymmetric system.

本文主要研究了主动磁轴承转子系统的稳定性、控制器设计和系统动特性参数辨识问题，包括陀螺效应对系统稳定性的影响和抑制方法；模拟控制器的设计和带全阶观测器的系统性能分析；对非对称结构系统动特性系数辨识的研究。

The overall control scheme and the weight update laws based on Lyapunov stability theory can guarantee the system stability and asymptotic convergence of the tracking error to zero, and attenuate the effect of the disturbance on system to a prescribed level.

总体控制方案及基于李亚普诺夫稳定性理论的权值更新律保证了系统的稳定性及跟踪误差渐近收敛于零，并使干扰对系统的影响衰减到指定的性能指标。

Algorithm application of neural networks.Ⅲ Implementation of neuro-computers. The main contribution of the dissertation can be summarized as follows: 1 Hopf bifurcation of three kind of neural networks are discussed in detail, including type of discrete time delay, type of time delay with weak kernel and strong kernel as well as the proof of existence of bifurcation. Other problems such as asymptotic stability of bifurcation periodic solution, algorithm of determining the bifurcation direction, asymptotic stability and style of periodic solution are also studied. The average time delay is chosen as the bifurcation parameter, phenomena pertinent to system states of the continuous time delay network with strong kernel evolving from stable to oscillating, then back to stable again are observed.

论文的主要创新之处可以归纳如下： 1）针对目前国内外对神经网络的分岔研究较少的情况，论文中详细讨论了带离散时延神经网络、带弱核的连续时延神经网络、带连续分布时延且具有强核的神经网络的Hopf分岔现象，从理论上证明了Hopf分岔的存在性，并研究了分岔周期解的渐近稳定性，得到了确定周期解的渐近稳定性、分岔方向、周期解的渐近形式的算法；用平均时延作为分岔参数，发现带强核的连续时延神经网络中存在着系统的状态由稳定变化到振荡现象，当继续增加平均时延参数时，又从振荡变为稳定这一特殊的动力学现象。

The conditions for the global asymptotic stability of the equilibrium point are expressed as the stability of the some decomposed matrix.

这种方法以矩阵分解为工具，结合平衡点的渐进稳定判据，用分解矩阵的稳定性决定平衡点的全局渐近稳定性。

We proposed and analyzed a class of Lesli predator-prey model with mutual interference and obtain global asymptotic stability of positive equilibrium point for the model by using the theory and method of stability.

建立并分析一类具有相互干扰的Leslit捕食与被捕食模型，运用稳定性理论及方法得到了该模型正平衡点的全局渐近稳定性。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。