查询词典 stability criterion

The results are applied to absolute stability problems, and the time-varying circle criterion is given.

这样就弥补了以往的结果只能处理时不变问题而难以处理时变问题的不足。

At the same time, for the process additive and multiplicative uncertainties mostly encountered in practice, the sufficient and necessary conditions for holding the control system robust stability are analyzed, and thus, an intuitive determination method is provided based on the spectral radius criterion.

同时，对于实际中最常见的被控过程的加性和乘性不确定性，分析了控制系统保证鲁棒稳定性的充要条件，由此给出了基于谱半径判据的直观判定方法。

First, a simple criterion on the delay-independent asymptotic stability has been derived in the form of the algebraic Riccati inequality and algebraic Riccati equation for the linear systems with time-varying multi-state delays.

4针对工业生产中广泛存在的不确定时滞过程，研究了时滞系统的渐近稳定性的判定方法和镇定方法。

In the case of the continuous system, an algebraic criterion for the stability is established by using the comparison method and M-matrix.

第一部分先介绍了包括系统的可解性等结果在内的一些准备知识。

The voltage stability's improvement has also been studied, and the new voltage stability's criterion has been proposed.

当然，提高和改善电压稳定性是我们研究的一个重点，为此本文还提出了一个新的有实用价值的电压稳定判据。

The calculation method for stability and the criterion of stability safety factor were discussed also.

根据目前钢结构稳定计算方法，评价了计算整体稳定和局部稳定的计算方法，同时根据不同的稳定承载力判别标准分析不同桥型下，承载力判别准则的合理性和局限性。

The motion stability practical criterion of arch structure is brought forward on the base of Lyapunov theorem of motion stability.

在对Lyapunov运动稳定理论研究的基础上，提出了拱结构的运动稳定性实用判别准则。

As the applications of the result in this paper,the problem of absolute stability is considered,then the time-varying circle criterion and other stability criteria are given.

最后，作为前面结果的一个应用，将所得的结果应用到绝对稳定性问题中，得到了时变的圆判据和其他的一些稳定性判据。

The results above showed:(1) The cultivars of large-flowered chrysanthemum are widely distributed in Beijing area with plentiful floral types and floral colors;(2) The cultivars with the rare types and colors are urgent for protection;(3) Most of the quantitative characters obeys to the normal distribution,some important traits agreed with skewed distribution.The probability grading can assist quantitative character in establishing new grading standards;(4) Most of qualitative characters is asymmetrical in cultivars,which might be caused by unbalanced differentiation of characters or linkages coming from emphasis characters selection;(5) The floral characters are relatively stable and have comparably large influence on classification,the characters of stipule also have a certain degree of stability and can act as an reasonable supplement for cultivars classification,but the foliar characters have worse stability and can only be recognized as lower level criterion.(6) The genetic relationship among the Flat-petaled group,the Quilled-petal group and the Spoon-petaled group are closest,which followed by the Filiform-petal group because of long-term selection pressure for the specialization of the petal tip loved by most people.The Anemone-petal group has further genetic relationship with these four groups.(7) ISSR molecular marker detection indicates that the proportion of polymorphic loci of lardge-flowered chrysanthemum is higher,in which the Flat-petaled group has the highest genetic diversity level.

综合以上的研究结果表明：(1)北京地区现有大量大菊品种，且花型与花色较为丰富；(2)珍稀花型、花色品种亟需保护；(3)大部分数量性状是符合正态分布的，少数重点观赏性状迫于选择压力呈现偏态分布，概率分级法能够辅助大菊的数量性状建立新的分级标准；(4)大部分质量性状在品种群内的分布是不均匀的，可能是由菊花性状遗传分化的不均衡性或受到选育重点性状的连锁作用而造成的；(5)大菊花部性状相对稳定，对品种分类影响较大，其托叶部分也具有一定程度的稳定性，可以作为品种分类的合理补充，而叶部性状稳定性较差，在品种分类中应作为更次一级的分类依据；(6)平瓣类、管瓣类和匙瓣类的亲缘关系最近，畸瓣类品种花瓣先端特化受到人们的喜爱，长期的选择压力使其区别于3种基本瓣型，而这四种瓣型与桂瓣类在亲缘关系上较远；(7)ISSR分子标记检测表明：大菊品种多态性位点百分率较高，平瓣类品种的遗传分化最为丰富。

This paper studies the stability of the system =f, some simple criterion for stability is proved using the methods of global linearization and tensor space analysis.

本文首先将非线性系统全局线性化，然后在张量空间中分析了其稳定性态，给出了原系统简洁的稳定性判据。

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。