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stationary相关的网络例句

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In this paper, the stationary and non-stationary random wind-induced response, dynamic reliability and optimization under the dynamic reliability constraint of structures with foundation rotation and tall building with TMD or TLD is studied systematically. Three achievements are gained. 1. According to the situation that Davenport wind spectrum is irrational fraction, the equivalent wind spectrum is generated by linear filtered process.

本文对基础转动结构、带TMD或TLD结构的高层建筑和高耸结构的平稳与非平稳随机风振响应、动力可靠性分析以及基于动力可靠性约束的优化设计方法进行了系统的研究,取得了以下成果:1、针对Davenport脉动风谱为非有理分式风谱,通过线性滤波过程和三参数拟合,生成了与Davenport风谱等效的脉动风谱。

Distance from keyway to stationary jaw of CMO as same as the distance from keyway to stationary with an extra jaw of CMP.

CMO的T型槽到固定额的距离等於CMP再加上钳口后到T型槽的距离。

Taking mapping QTL that affect leaf age growth trajectories in rice of a DH population as an example, we used 3 biological meaningful submodels and 2 orders Legendre polynomial to model the mean vector of QTL genotypes and 11 stationary and non-stationary models to fit residual covariance matrix.

以水稻一个DH群体的叶龄性状为例,我们分别用3个具有生物学意义的子模型和2阶Legendre多项式去拟合QTL基因型的均方向量,用13个平稳和非平稳模型去描述剩余协方差的变化。

Along with study of Lur"e uncertain time-delay control system with several stationary components is deepened, the robust control problem of Lur"e system with several stationary components is paid attention in the near future.

近年来,随着人们对具有多个执行机构的不确定滞后型Lur'e控制系统认识的加深,对于多执行机构Lur'e系统的鲁棒控制更是引起了人们极大的关注。

Considering the randomness of the structural physical parameters and utilizing the random variable's functional moment method and the algebra synthesis method, the mean value and the variance of the mean square value of the structural displacement response under stationary random excitation are computed firstly from the expressions of structural stationary response in frequency domain. And then the expressions of the mean value and the variance of stochastic rigid frames dynamic reliability are educed from the Poisson formula of calculating dynamic reliability.

考虑结构的物理参数具有随机性,从结构随机响应的频域表达式出发,利用求解随机变量数字特征的代数综合法和矩法,导出随机参数刚架结构在平稳随机激励下的位移及速度响应均方值的数字特征,再由动力可靠性的Poisson公式导出结构动力可靠度的计算公式。

The dynamic characteristics of stochastic truss structures and stochastic frame structures are analyzed by using Random Factor Method. Then, from the expressions of structural random response of the frequency domain, the computational expressions of the mean value, variance and variation coefficient of the mean square value of the structural displacement and stress response under the stationary random excitation or non-stationary random excitation are developed by means of the random variable's functional moment method and the algebra synthesis method.

考虑压电智能桁架结构物理参数、几何参数、结构阻尼和外荷载、闭环系统控制电压分别或同时为随机变量,构建了结构在随机力作用下的动力响应分析模型,提出了求解方法,推导出结构动力响应随机变量的数字特征计算表达式,通过算例验证了所建模型和所提求解方法的正确性和有效性。

The maj or obj ect of this paper is the medium.small size concrete dams that have been used for many years.They have the characteristic that the alteration of water height of reservoirs is unobvious and the dams, displacements are affected mainly by temperature.With a case,the method of stepwise regression is used to analyze the vertical displacement prototyDe observed data.Then regression equation is established,the relation of dam,s displacement with hydraulic pressure、temperature、time effect is analyzed and the displacement change rule is obtained,the dam'S displacement onlv dependent to temperature is received.According to the theory of Finite Elements Method,the quasi-stationary temperature field formula and temperature stress formula are deduced.The QTP program and TFEM3D program are written with FORTRAN.The same case is calculated through QTP program to solve the quasi-stationary temperature and through TFEM3 D program to solve the dam'S displacement and find tlle dam,s deformation rule.This rule is accordant with the regression,S resuIt.

本文主要针对运行期间库水位变化很小、坝体的位移主要受温度变化影响的中小型混凝土坝,结合工程实例,采用逐步回归的方法对垂直位移原型观测资料进行分析,建立回归方程,分析坝体位移与水压、温度、时效之间的关系以及位移变化规律,分析结果坝体位移只与温度有关,而基本上不受库水位变化和时效的影响;根据有限元原理推求了混凝土坝准稳定温度场公式和温度应力公式,利用FORTRAN语言编制出QTP准稳定温度场程序和TFEM3D位移场程序,对大坝的温度场和位移场进行计算,求出坝体结点的变温值和坝体结点位移值以及单元应力分量,分析得到大坝的变形规律与实测资料以及回归统计变形规律一致,说明对坝体准稳定温度场的研究是正确的。

It's found that displacement response of the beam is a non stationary random process even if the moving load is a stationary process.

发现此时梁的挠度响应为非平稳随机过程。

Tansformed the real part and imaginary part of interferogram to stationary wavelet domain, analyzed the PDF of signal and noise wavelet coefficients using Pearson distribution system, then evaluated the wavelet coefficients of signal in stationary wavelet domain by Maximum A Posterior criteria to reconstruct the interferogram.

2将干涉图的实部和虚部分解到静态小波域,用Pearson分布系作近似,分析了信号和噪声小波系数的概率密度函数,在静态小波域用MAP准则估计信号的小波系数用于干涉图的重建。

The technique made full use of the characteristic of PR controller which can realize zero steady-state error in AC input signal in stationary frame. In the method, the active and reactive current component in the vector control strategy were transformed in the stationary frame to achieve the objective of keeping the DC-link voltage constant, adjusting the power factor and decoupling the active and reactive power. Compared with conventional double close-loop proportional integral controller, the PR technique is better in harmonic compensation without the complex rotating frame transformation and the couple or feedback voltage which is easily influenced by temperature and circuit parameters. The control algorithm is easy to be realized while the robustness and power quality is improved.

该方法充分利用了PR控制器能够在静止坐标系下对交流输入信号无静差控制的优势,将矢量控制策略下的有功电流和无功电流分量转换到静止坐标系下进行调节,实现网侧变换器维持直流电压稳定和调节功率因数的控制任务和双馈电机有功、无功功率的解耦控制,与传统的双闭环PI控制相比,该策略无需繁琐的坐标旋转变换,不存在受温度及电路参数影响的耦合项和前馈补偿项,且易于实现对系统低次谐波电流的补偿,减小了控制算法实现难度,提高了控制系统的鲁棒性和电网电能质量。

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Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时,他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

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The enrich the peopling of Deng Xiaoping of century great person thought, it is the main component in system of theory of Deng Xiaoping economy, it is a when our country economy builds basic task important facet.

世纪伟人邓小平的富民思想,是邓小平经济理论体系中的重要组成部分,是我国经济建设根本任务的一个重要方面。