查询词典 jacobian method of eigenvalue problem

During calculation of the tangent vector, the complete Jacobian matrix is adopted so that the tangent vector is computed accurately. During calculation of initial power flow and correction steps FDCPF is used.

该方法在切向量求取环节，采用完整的雅可比矩阵做系数矩阵求取切向量，从而保证切向量的准确性；在初始潮流计算和校正环节采用快速分解法进行求解。

For the space robot system without condition control, according to the principle of momenta conservation, The Kinematic model is constructed using the general Jacobian matrix.

对于载体无位置控制的空间机器人系统，根据动量守恒定律，应用广义Jacobian矩阵建立了系统的运动学模型。

In chapter 1, Galerkin alternating-direction procedures and an approximation to the Jacobian of the isoparametric map are applied to discuss a three-level and a four-level Galerkin alternating-direction procedures for two kinds of nonlinear hyperbolic equations which are given on a nonrectangular, curved region.

第一章结合[10]中对矩形域上双曲型问题提出的交替方向有限元方法和[19]中利用等参元，等参变换的Jacobi行列式的逼近来研究的思想，给出了两类非线性双曲型方程在非矩形域上的交替方向有限元方法。

A static mathematical model for the parallel balance calibration is developed. The conclusion that the force Jacobian calibration is to solve least square solution of overdetermined linear equations.

建立了并联天平的静态标定数学模型，得出力雅可比矩阵标定的实质是求解超定线性方程组最小二乘解的结论。

Ttingis employed to obtain more accurate Jacobian estimation and image precompensation.

为了补偿时延，本文采用局部拟合方法估计图像雅可比矩阵，以获得当前时刻更准确的图像雅可比矩阵估值，并可对图像预补偿。

By the use of the concept of "pseudo convected velocity" proposed by theauthor, mechanical influence coefficient is obtained with the physical meaning ofdepending only on configuration of mechanism explicitly revealed and therelationship between influence coefficient and Jacobian matrix of robots is analyzed.

采用作者提出的&拟牵连速度&的概念，推导出了机构的影响系数，明确地给出了影响系数只依赖于机构位形这一结论的运动学含义，分析了机构影响系数与机器人雅克比矩阵的关系。

Extensive research has been carried out under the hypothesises such as fixed number of constraints in one dynamic system, nondegenerative Jacobian of constraints, ideal and bilateral constraints. If one or more of these hypothesises are violated, inconsistency in state space may appear.

然而，目前有待发展的经典力学理论中有一些假设性的前提，例如约束的数目保持不变，约束的Jacobian非退化，约束是理想的，同时对含单边约束的系统研究甚少。

Firstly, we analyze the singularity conditions and separate the singularity parameters from the Jacobian inverse. Then, the damped reciprocals are used to avoid the singularities by replacing their reciprocals.

首先， 分析产生奇异的条件，将导致 Jacobian 奇异的参数分离出来，然后用阻尼倒数代替其普通倒数，以回避运动学奇异的影响。

An improved scheduling method based on exponential division of deadline is presented after study on the problem of prevenient average division of deadline method in this paper.The paper also proves when the relative deadline of each node is too large,the schedular performance of messages transmission task using average division of deadline will be decreased by introducing notion of quantization cost.The new method solves the problem well,and digital simulation validate the new method.

摘 要：针对平均分区的EDF算法在CAN总线中的应用出现的问题，本文提出了一种改进的基于指数分区的EDF算法，并通过引入量化误差的概念，推导证明当CAN网络中各节点相对截至期分布时间过大时，平均分区的EDF算法会导致CAN总线中信息传输任务可调度性的下降，而基于指数分区的EDF算法保证了信息传输任务的实时性，仿真试验验证了算法的有效性。

Based on this, aim at the disadvantage on Wigner Distribution and Fractional Fourier Transform that can't restrain noise interference effectively when be used to detect Linear Frequency Modulated signals interfered by heavy noises, we proposed a improved WD. Simulation results show that this method can restrain noise interference effectively and improve the ability of LFM signals detection. On the other hand, in multi-component cases, WD suffers from the cross-terms, which may impair some of the auto-terms. In order to separate original multi-component signals into components and reconstruct them separately, we can use the method of optimal filtering in fractional Fourier domain. But this method also has a problem that if signals have aliasing in the fractional Fourier optimal domain as well, the reconstructed signals will be distorted. In this thesis, a novel method of quasi Fourier transform is proposed in order to solve the problem of multi-component signal reconstruction, and have good results.

在此基础上，针对Wigner分布和分数维傅里叶变换在处理高噪声背景下线性调频信号检测的问题时存在不能有效抑制噪声干扰的缺点，提出了改进Wigner分布的办法，该方法能够抑制噪声，提高信号的检测能力；针对Wigner分布在处理多分量非线性调频信号时存在干扰项的缺点，以及分数域最优滤波方法在处理多分量非线性调频信号分离重构问题时存在的局限性，该局限性表现为在对最优分数域上也有信号分量重叠的情况进行处理时重构信号发生畸变，提出了新颖的类傅里叶变换的方法，该方法对在最优分数域上也有信号分量重叠的情况也能处理，得到的重构信号失真很小。

Sodium citrate; calcium carbonate; calcium hydroxide; potassium bicorbonate; magnesium carbonate; ferrous sulphate; Zinc sulphate; copper sulphate; manganese sulphate; potassium iodide; sodium selenite.

柠檬酸钠；碳酸钙；氢氧化钙；碳酸氢钾；碳酸镁；硫酸亚铁；硫酸锌；硫酸铜；硫酸锰；碘化钾；亚硒酸钠。

All this to say that I'm glad filmmaking hasn't become completely ironic. I can enjoy an ironic film as much as the next person, but they usually involve a message of some sort. One that's delivered in a smirkingly clever way that requires little in the way of talent.

所有这些都是说，我很高兴电影制作没有变成完全讽刺艺术，我可以和下一个人一样享受讽刺电影的乐趣，虽然他们经常会被划归到一定级别，技术方面不需要很高的才能。