查询词典 vector calculus

To improve accuracy of detection of current direction, components of magnetizing current and torque current are transformed into two-phase stationary frame. Therefore compensating voltage vector can be decided according to the sector the current vector is locating.

为了提高电流极性检测的准确性，利用旋转轴系中的励磁电流和转矩电流分量经过坐标反变换，判断电流在两相静止轴系所处的扇区来决定需要施加的补偿电压。

In this paper, a new model adaptation using vector Taylor series is presented, which adapts the mean vector and covariance matrix of hidden Markov model.

该文将矢量泰勒级数用于模型自适应，同时对HMM模型的均值向量和协方差矩阵进行变换，使其与实际环境相匹配。

Using the powerful calculation capability of MATLAB for matrix,and adopting vector ring and vector chain equation,the paper calculates and imitates the characteristic of kinematics and kinetics about equivalent force model of plane machinery.

利用MATLAB软件对矩阵强大的计算能力，采用矢量环与矢量链方程对平面机构的等效力学模型的运动学特性和动力学特性进行计算仿真，主要针对机构的速度波动特性进行了仿真和分析。

In Chapter 1, we introduce some theories and methods about the estimation of regression coefficient and do some preparations including some theories in the mean vector, the covariance matrix, the quadratic form of random vector, matrix derivative.

第1章概括介绍线性回归模型回归系数估计的一些理论和方法，并给出均值向量与协方差阵、随机向量的二次型、矩阵微商等预备知识。

Combining vector median filter and mean value filter, vector median-mean filter, which can filter Gaussian noise and impulse noise and preserve fine details, is adopted.

为了提高图像的质量，采用了既能保持图像细节又能滤除脉冲和高斯噪声的中值滤波算法和均值滤波算法相结合的矢量中值均值滤波器。

Through simulation, the size of the filter template affecting on filtering imaging is investigated, the filtering effects of second mean filtering method and vector filtering method at the same size of filter template is comparised, the curve distribution of power spectral density of second mean filtering method and vector filtering method is analyzed.

仿真实验研究了滤波模板的大小对滤波效果的影响，比较了在同样模板的选取下向量滤波方法与二次均值滤波法的滤波效果，分析了向量滤波方法与二次均值滤波法的功率谱密度分布。

In this scheme there exist a vector nonet similar to the famous scalar nonet α_0(980,f_0(980),κet al, the masses of members of the nonet are estimated, the decay of the nonet is analyzed in detail, it can decay into two pseudoscalars or one pseudoscalar and one vector meson.

我们估计了该九重态中每个成员的质量，在"fall apart"衰变机制下仔细考察了它们的衰变，它可以衰变到两个赝标介子或者一个赝标介子和一个矢量介子。

Based on the traits of dyadic wavelet decomposition of signal and that of the distribution of wavelet image coefficients, PLVQ and ZR are conjoined by making use of D\-4 lattice. Firstly, Pyramidal lattice vector quantization is adopted to quantize wavelet image coefficients. Nonzero lattice vectors and zero lattice vectors are formed. Secondly, nonzero lattice vectors are dealt with by adopting complex entropy coding. Finally, in order to fix on the position of nonzero lattice vector effectively, that is, to deal with zero lattice vectors effectively, the concept of significant map is introduced into. The significant map is scanned two times from down to up and from up to down.

根据信号的二进小波分解特点和小波图象系数的分布特点，利用D\-4格将PLVQ和零树结合起来，提出了一种基于零树和金字塔格型矢量量化的小波图象编码方法，该方法首先采用金字塔格型矢量方法来量化小波图象系数，以得到非零格点和零格点；然后采用复合熵编码来处理非零格点；最后为了有效确定非零格点的位置，也就是为了有效地处理零格点，又引进了重要图的概念。

In order to talk about the limitation of a vector series, one has to introduce the norm of a vector.

量子体系的态矢量空间是复的内积空间，即定义了内积的复线性空间。

The energy calculation of the noncoherent despreading/demodulation signal was extended into vector norm calculation based on the equivalence property theory of vector norm in the orthogonal codes spread spectrum system.

依据向量范数等价性原理，将正交码扩频系统中非相干解扩解调信号的能量计算推广为向量范数的计算。

I hope that this success is just the first in a long series.

我希望这只是成功的开始。

Three dimensional stresses on the interface of tire and soil, tire deflection and soil sinkage are measured.

测试轮胎——沙土界面上的三向应力、轮胎变形和沙土沉陷；建立考虑剪切应力对沙土承载特性产生影响的车轮牵引性能预测模型；分析车轮作用下土壤的纵向稳定性。