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second order model
相关语句
  二阶模型
     By using GLSE-Generalized Least Squares Estimation to the input and output datum of the system, a equivalent system comprise second order model and delay term of the actual nonlinear system is identified in different flight condition.
     对所得高阶非线性仿真模型的输入输出数据进行等效处理,采用二阶模型加延迟项来拟合机械操纵系统,得到系统在不同飞行状态下的低阶等效模型。 在对仿真数据进行等效处理时,运用广义最小二乘参数估计法。
短句来源
     Based on operating curves of nodal injections and PV nodal voltages, this paper compares several probabilistic load flow models in correcting equation and computational precision, including the linearized model, the approximate second order model and the complete second order model.
     以节点注入功率和PV电压运行曲线为基础,分析了几种概率潮流模型在迭代算式和计算精度上的差别,包括线性化模型、近似二阶模型和完整二阶模型.
短句来源
     The result shows that the approximate second order model that has been cared for a long time cannot ensure the computational precision of variances of real part of nodal voltages, and the complete second order model can provide much accurate result for voltage expectations and covariances.
     试算结果表明,长期以来备受关注的近似二阶模型并不能保证电压实部方差的精度,而采用完整二阶模型计算的电压均值和方差具有相当高的精度.
短句来源
     In the aspect of probabilistic eigenvalue analysis, the precisions of several probabilistic eigenvalue models are compared. The expectations and covariances of eigenvalues are computed by the linearized model, the simplified second order model,the second order model and the correction to system matrix A.
     在概率特征根分析方面,分析比较了几种模型的计算精度,包括线性化模型、简化二阶模型、完整二阶模型和修正系数矩阵A,以及高阶累加量法。
短句来源
     In the control system for Refrigeration and Air Conditioning, A second - order model with a dead time element is used to identify the actual high order process. The optimal control variables Kp and Ki for the second order model with varied transfer coefficient and time constants are given in this paper.
     本文用带纯迟延的二阶模型近似制冷空调系统高阶控制对象,并给出二阶模型在各种模型参数下的最佳PI控制参数——Kp和Ki值,控制效果优良。
短句来源
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  “second order model”译为未确定词的双语例句
     By the comparison between different adsorption kinetics, it could be drawn that pseudo second order model could be used to simulate the adsorption process effectively. The relation between the k2 value of the pseudo second order and particle diameter could be expressed as: ln(k2)=-1.039 ln(dp)-9.014;
     GAC对BPA为单分子层吸附,400min基本可达到平衡,且吸附速率变化符合拟二级动力学模型,dp与速率常数k2之间符合ln(k2)=-1.039ln(dp)-9.014;
短句来源
     The experimental results show that the satisfactory response characteristics can be obtained by using the minimum time control method combined with the fuzzy control with the second order model.
     实验结果表明,应用二阶环节模型进行最少拍控制并结合模糊控制,可获得满意的响应特性.
短句来源
     At the same time,the function of the pseudo second order model reaction rate helps to define the dye biosorption reaction perfectly with the correlation coefficient(R2)being 0.999 9.Thus,it can be found that the dye biosorption proves to be active by calculating the activation energy of the sorption(Ea=5.21 kJ/mol)with the Arrhenius under different temperatures.
     吸附动力学可用拟二级速率方程描述(R2=0.9999); 吸附活化能Ea=5.21kJ/mol,表明吸附具一定的活化性。
短句来源
     Taking a second order model as an example, the relationship between the accuracy of identification and the parameters of modulating window is investigated, and some tips about designing wavelet modulating function are outlined.
     以二阶系统为例 ,研究了调制窗口参数与辨识精度的关系 ,并以此得到调制函数参数的设计依据 .
短句来源
     Ford introduced a new algorithm which is obtained by constructing a nonlinear model with simple parameter for the objective function. In this paper,for the gradient we give a second order model with simple parameter.
     Ford对于无约束最优化的拟牛顿方法介绍了一种新算法,这种算法是通过对目标函数的梯度构造含有单参数的非线性模型而导出的.
短句来源
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  相似匹配句对
     About Cone of the Second Order
     关于二次锥面的讨论
短句来源
     the noninertial effect is of second-order.
     惯性力的作用在二阶边界层中才出现。
短句来源
     Second .
     二、破自造论。
短句来源
     The precision of the model is second-order.
     模型的精度是二阶的。
短句来源
     On Order
     论秩序
短句来源
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  second order model
The modified Huron-Vidal second order model showed good convergence ability, which was due to its robustness to parameter variation.
      
The biosorption kinetics followed the pseudo-second order model.
      
The kinetic data supports pseudo-second order model but shows very poor fit for pseudo-first order model.
      
The kinetic and sorption isotherms experimental results were best adjusted to the pseudo-second order model and to the Langmuir-Freundlich isotherm model which indicate that the sorption process is chemisorption on heterogeneous materials.
      
Although, the last three gave correlation coefficients higher than 0.96, the pseudo-second order model was the best to describe the reaction rate.
      
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This paper discusses a techniqueof selecting the optimum locations in a multimachinc system for the power system stabilizer (PSS) installation. Eigenvector analysis is employed to determine the dominant sources of a particular mechanical oscillation mode in a multimachine system. This method was first introduced in 1980 by F.P. deMello using a second order model for each machine. Further development is continued in this paper using a fourth order model for more accurate results. Comparison...

This paper discusses a techniqueof selecting the optimum locations in a multimachinc system for the power system stabilizer (PSS) installation. Eigenvector analysis is employed to determine the dominant sources of a particular mechanical oscillation mode in a multimachine system. This method was first introduced in 1980 by F.P. deMello using a second order model for each machine. Further development is continued in this paper using a fourth order model for more accurate results. Comparison of both results indicates that the simplified second order machine model is fairly accurate for the selection of strategic locations in a large electric power system for the PSS installation.

本文研究多机系统中稳定器(PSS)最佳安装地点的选择方法。F.P.deMello在1980年首次提出用特征分析法来决定各具体振模的主要源点,从而决定PSS的合适安装地点。那时,他对每个电机用的是二阶模型。本文进一步用四阶模型来拟合以求得更准确的结果,经比较两者的结果证明,简化的二阶模型,对于确定大的电力系统中PSS的安装地点,还是相当准确的。

In this paper, a second-order model is proposed for the study of the evolution of the nocturnal boundary layer (NBL) and tested against the atmospheric boundary layer data from Wangara. The computed results show that the model can simulate some important characters observed in the nocturnal boundary layer, and that there is a kind of sudden change occurring in the NBL.

本文建立了一个二阶矩模式,用此摸式对Wangara资料进行了实例模拟.结果表明,该模式能模拟出夜间边界层发展以及湍流结构的一些主要特征.计算发现在夜间边界层发展过程中存在一种突变现象.

The samples of Shengli residue were air-blown in a batch reactor with the purpose of obtaining data for developing the mechanism and kinetics of air-blowing. Before and after air-blowing, samples were adsorption-separated and analyzed to gain an insight into the changes in structural composition and colloidal properties. The results obtained showed that the reaction of aromatics during the airblowing was influenced by naphthenes and the oxidation mechanism of Shengli residue could be interpreted by a series...

The samples of Shengli residue were air-blown in a batch reactor with the purpose of obtaining data for developing the mechanism and kinetics of air-blowing. Before and after air-blowing, samples were adsorption-separated and analyzed to gain an insight into the changes in structural composition and colloidal properties. The results obtained showed that the reaction of aromatics during the airblowing was influenced by naphthenes and the oxidation mechanism of Shengli residue could be interpreted by a series reaction kinetics model when the saturates plus aromatics were considered as one component. The changes in softening point follows perfect first order model, and that in penetratin follows second order model.

在间歇式氧化釜中,对胜利减压渣油进行了氧化试验,以取得动力学的研究数据.对氧化前后的试样进行吸附分离和分析,以比较其结构组成和胶体性质的变化.研究结果说明,饱和烃组分中的环烷影响芳烃的反应.将饱和烃和芳烃作为一个反应组分而建立的串联反应动力学模型,能很好地描述胜利减压渣油氧化反应动力学过程。氧化过程中,软化点的变化可以一级动力学方程表示,针入度的变化则遵循二级动力学方程.

 
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