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By transforming the nonlinear saturation constraint into the special linear constraint, the problem of solving the feedback controller with saturated actuator is converted to the design of controller with linear constraint. The stochastic stability is ensured by using the intersection of ellipsoid invariant set of different modes existing in the attraction domain of the closed loop system. In this case, solving controllers can be equivalent to a solvability problem of linear matrix inequalities.

通过将非线性饱和约束转化为特殊的线性约束,使具有饱和执行器的控制器求解问题转化为线性约束控制器的求解问题,利用位于闭环系统吸引域内的不同模态下椭圆不变集的交集来保证系统的随机稳定性,此时控制器的求解可等效为线性矩阵不等式的可解性问题。

The paper includes:The author calculate the structures inner force and displacement of the free end , analyze the influence of the height and the value of pretress of cable by making use of ANSYS 9.0 soft, pose the concept of critical prestress,conclude the function relation between displacement of the free end, initial strain and the height of cable ,analyze the dynamic properity and point out that Newmark-β method should be adopted when we analyze the dynamic properity of the cable-stayed spatial structure with direct integral test to guarantee the contribution of high mode,finally conclude the functional relation among coefficient of earthquake inner force, initial strain and the height of cable, wish to get some helpful conclusion applied to cable-stayed spatial truss design.

本文系统介绍了斜拉空间桁架竖向地震反应的分析理论与方法、详细分析了斜拉空间桁架结构在静力和竖向地震作用下的受力性能,主要内容包括:利用通用有限元软件ANSYS9.0计算了斜拉空间桁架在静力和竖向地震作用下内力及自由端位移分布规律并得出地震内力系数与节间位置、预应力以及斜拉索高度之间的函数关系;详细分析了斜拉索中施加的预应力以及斜拉索高度的变化对于该种结构内力及自由端位移的影响并提出了斜拉空间桁架的临界预应变概念,进而得到了自由端位移与初始预应变以及斜拉索高度的函数关系,即:△=-(40h+2180)ε+9.8;分析了该种结构的动力性能,并指出:在时域内采用直接积分法计算该种结构的动力响应时,应该考虑采用不引起振幅率减小的Newmark-β法,以保证高阶模态响应的贡献仍然保留在响应中而不致于被忽略。

Mareccu couldn't hold him down for long, as he sensed his second's ire harden from simple defensive into full combat mode, and his last rational thought before letting his own fury run unleashed was that they were going to end up killing each other.

Mareccu 无法把他捉住下来为长的,当他感觉,他的秒忿怒从简单的守势到完整的战斗模态变硬,而且在使他自己的愤怒跑之前解放的他最后的理性想法是他们将要结束杀害的彼此之时。

Places the essence of corporeal substance in its actual extension and recognizes only modal accidents metaphysically united to their substance, it is clear, according to his theory, that together with the conversion of the substance of bread and wine, the accidents must also be converted and thereby made to disappear.

自笛卡儿(四1650 )学位的本质是有形的物质,其实际的延伸和只承认模态意外形而上学的团结,以自己的物质,它是明确的,按照他的理论,即连同改建该物质的面包和酒,意外还必须被转换,从而取得消失。

The speciality to let several coefficients of S-M algorithm are analyzed;(2) We first propose the nonlinear and adaptive prediction model based on several closest neighbors and extend the method to multistep prediction;(3) We first exploit Empirical Mode Decomposition technology to predict hopping frequency codes, it is namely that a complex time series is decomposed as several Intrinsic Mode Functions easy to prediction, then predict these IMF respectively, at last reconstruct estimated values of the time series;(4) We exploit the above prediction model validate effect while there are omitted data in observed time series and propose the corresponding resolve.

1具体分析了S-M算法中几个参数设置的特点;(2)首次提出了基于邻近点的非线性自适应预测模型,同时将这种算法推广到多步预测;(3)首次采用经验模态分解技术预测跳频码,即将一个复杂难以预测的时间序列分解为几个相对容易预测的本征函数,然后分别预测这些本征函数,最后重构出时间序列的估计值;(4)应用基于邻近点的非线性自适应预测模型验证了观测时间序列存在数据缺损时的预测效果,并提出了相应的解决办法。

Based on the single-axis air-bearing test bed, three experiment schemes are creatively designed for investigating the behaviors of rigid-flexible coupling dynamics:(1) experiment scheme for structural dynamics problem under a non-inertial frame,(2) experiment scheme for rigid-flexible coupling dynamics with unknown large overall motions,(3) experiment scheme for modal analysis of a typical rigid-flexible coupling system.

为了能更深入地揭示刚柔耦合动力学特性与验证本文提出的一次近似模型的正确性,最后重点介绍了我们在单轴气浮台动力学仿真实验平台基础上,经过多次探索和总结,创造性地设计的三套刚柔耦合动力学实验方案:(1)非惯性系下结构动力学问题的实验研究方案,(2)大范围运动为自由的刚柔耦合动力学问题的实验研究方案,(3)刚柔耦合系统模态分析实验方案。这三套方案从实验的角度来讲是可行的,这为下一步的实验工作打下了基础。

In simple view mode, only the filename is displayed and thus each entry takes only one line of the screen:In extended view,the date of modification and size of the file are added (date and number of entries for a directory, size and free space for a drive):ShortcutsLong press on the numerical keyboard will also quickly move you to 9 predefined locations of the file system:1: C:2: E:3: Z:4: C:\Logs5: C:\Data6: C:\System7: E:\8: E:\Data9: E:\SystemThere is currently no way to modify customize these locations but we plan to introduce this in the future.

在简单的视野模态中,只有文件名被显示和如此每个进入拿只有荧屏的一条线:在广大的视野、修正的日期内和文件的大小被增加(日期和进入的数字为一个目录,大小和自由的空间为驾驶):ShortcutsLong 杂志报纸在数字的键盘上也将会很快地移动你到文件系统的 9个被预先定义的位置:1: C:2: E:3: Z:4: C:\ Logs 5: C:\ Data6: C:\ System7: E:\8: E:\ Data9: E:\ SystemThere 是现在没有方法修正定制这些位置但是我们计划未来介绍这。

On the basis of above research works, a finite element model for column of the TH6350 high speed numerical control boring was built; the stiffness of the slide guide interface between the bed and column bottom and the constrain stiffness from lead screw were estimated by using experimental formula, to guarantee the rationality of the boundary condition of the FEM model; the week link of the column has been found by application of ANSYS software to FEM model analysis of the column, The result shows that the calculation data and test data are very consistent, therefore proved the properness of the FEM model.

在上述工作基础上,本文对TH6350高速数控镗床的立柱进行了有限元建模;并利用经验公式估算了立柱与床身之间的导轨结合面上的刚度和丝杠副约束刚度,保证了有限元模型的边界条件的合理性;应用ANSYS软件进行有限元模态分析找到了立柱结构的薄弱环节,通过分析对比表明有限元分析计算与现场测试的结果相一致,证明了有限元模型的正确性,为立柱结构的进一步改进设计和优化提供了重要参考依据。

In this framework, image frame, audio and text are represented, which are the three modalities in video shots as data points by the 3rd-order tensor. Then a subspace embedding and dimension reduction method is proposed, which explicitly considers the manifold structure of the tensor space from temporal-sequenced associated co-occurring multimodal media data in video. It is called TensorShot approach. Transductive learning uses a large amount of unlabeled data together with the labeled data to build better classifiers. A transductive support tensor machines algorithm is proposed to train effective classifier. This algorithm preserves the intrinsic structure of the submanifold where tensorshots are sampled, and is also able to map out-of-sample data points directly. Moreover, the utilization of unlabeled data improves classification ability.

在此框架中,视频镜头首先被表示成由视频中所包含的文本、视觉和听觉等多模态数据构成的三阶张量;其次,基于此三阶张量表达及视频的时序关联共生特性设计了一种子空间嵌入降维方法,称为张量镜头;由于直推式学习从已知样本出发能对特定的未知样本进行学习和识别,最后在这个框架中提出了一种基于张量镜头的直推式支持张量机算法,它不仅保持了张量镜头所在的流形空间的本征结构,而且能够将训练集合外数据直接映射到流形子空间,同时充分利用未标记样本改善分类器的学习性能。

In the aspect of the Philosophy of Language, Montague Grammar inherited Frege's theory of meaning, Russell's theory of reference, Carnap's theory of verification, Goodman's Modern Realism, Tarski's theory of truth, Kripke's semantics of possible worlds of modal logic, etc, and opens up a new direction in the study of Formal Semantics of natural language; in the aspect of Theoretic Linguistics, Montague was influenced by Chomsky's research idea about the formal treatment of the syntax in natural language and extended it to the semantic study of natural language; Montague Grammar has two theoretic sources: One is the Logical Semantics and Intensional Type Theory in Logic, and the other is Categorial Grammar and Transformative Generative Grammar in Linguistics.

在语言哲学方面它继承了弗雷格的意义论,罗素的指称论,卡尔纳曾的实证主义,古德曼的现代实在论,塔斯基的语义学真理论,克里普克的模态逻辑可能世界语义学的传统,开辟了自然语言形式语义学研究的新方向;在理论语言学方面,他受乔姆斯基形式化语言研究思想的影响,并把这一思想扩展到自然语言的语义研究方面;蒙太格语法的理论来源有两个方面:逻辑方面是逻辑语义学思想和内涵类型论理论,语言学方面是范畴语法和转换生成语法。

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推荐网络例句

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是,在否定句或疑问句里,这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷

Nusa lembongan : Bali's sister island, coral and sand beaches, crystal clear water, surfing.

Nusa Dua :豪华度假村,冲浪和潜水,沙滩,水晶般晶莹剔透的水,网络冲浪。