查询词典 stability conditions

An inert gas is one that exhibits great stability and extremely low reaction rates under normal temperature and pressure conditions.

惰性气体是在常温和常压下非常稳定且反应率极低的气体。

Solid acid catalysts have been found to be useful catalyst in a variety of organic reactions. They have many advantages, such as non-toxic, inodorous, non-volatile; non-corrosive, non-pollution, mild reaction conditions, high yields and reactivity, excellent stability and simple work-up procedure, and these are what liquid catalysts cant replace.

固体酸催化剂在有机合成反应中应用广泛，这类催化剂无毒无味，不挥发，不污染环境，不腐蚀设备，容易回收，可重复使用，所催化的反应条件温和，产率和选择性高，后处理简便，且具有独特的催化性能，这些是液体催化剂所不能代替的。

The insurgence of buckling and flutter is investigated to identify limiting operating conditions and predict stability limits.

通过研究这种弯曲和振动可以确定运动体的极限工作条件和预测它的稳定性极限。

The proposed method applies the ellipsoid invariant set to the estimated state and state estimation error. The conditions of invariance and feasibility of estimated state, as well as the stability of the closedloop system are given.

该方法采用双模控制策略，将不变椭圆集概念同时应用于观测器的状态方程和误差方程，给出估计状态不变性和控制输入可行性条件并给出了闭环系统的稳定性定理。

At first, this paper surveys nonlinear control and the applications of neural networks in control respectively. Then it studies definitions, mathematical descriptions and conditions of invertibility for nonlinear systems, which are used to analyze the feasibility of inverse system control method. Conclusions about the feasibility of inverse control and the realizability of αth-order inverse systems in engineering are achieved. Furthermore, this paper discusses the feasibility, structure and identification of neural network αth-order inverse system for general single-input single-output continuous or discrete nonlinear systems and various composite control methods based on the αth-order inverse. At last, as a part work of an actual project, this paper focuses on the design of neural network αth-order inverse control method for thyristor controlled series compensation in power systems and its effect in improving the stability of power systems.

本文首先分别概述非线性系统的控制与人工神经网络在控制中的应用；然后研究非线性系统各种可逆性的定义、数学描述及可逆性条件，并用于分析逆系统控制方法的可行性，得出有关逆系统控制方法可行性的结论，阐明一般情况下α阶逆系统才工程可实现；接着本文针对一般单输入单输出连续、离散非线性系统，研究神经网络α阶逆系统的可行性、结构与辨识以及基于神经网络α阶逆系统的各种复合控制方法，并给出应用例子；最后本文结合实际项目，针对采用可控串补的电力系统，设计神经网络α阶逆系统控制方法，研究其对提高电力系统稳定性的作用。

In this paper, the dependence of the yields, intrinsic viscosity and their distribution as well as thermal stability of the terpolymers on the reaction conditions and isocyanate content were described.

并考察了反应条件，异氰酸酯加入量对共聚产率及共聚物的特性粘数、分子量分布及热稳定性的影响。

The conditions for bi-stability of isotropic cylindrical shell are derived based on the principle of minimum strain energy.

通过对柱壳变形应变能的分析，利用最小势能原理导出了柱壳实现双稳态的条件。

By using Mawhin\'s continuous theorem and liapunov function, sufficient conditions for the existence and globally asymptotic stability of positive periodic solutions of three systems are derived, respectively.

我们还利用Mawhin连续性定理分别建立了两个系统正周期解存在的充分条件。

This system is permanent by comparative principle and globally asymptotically stable through constructing a Liapunov function; for the periodic case, the research has obtained conditions for existence, uniqueness and stability of a positive periodic solution.

利用比较原理研究了系统的持久性，通过构造Liapunov函数证明了系统的全局渐近稳定性，在假设系统为周期系统的条件下得到了正周期解的存在唯一性和全局渐近稳定的充分条件。

The other is Lur'e system. Two sufficient conditions for its robust absolute stability are respectively given under the different uncertainty modes, i.

该准则不包含Lyapunov矩阵与系统矩阵的乘积项，当用于分析凸多面体不确定系统的鲁棒性能时，能够有效降低二次稳定框架的保守性。

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。