坐标变换

So compensating of nought line current is very important, that needs the Trinomial Four Lines pattern static Var Generator. The applied theory was brought forward two or three tens years ago, but domestic Trinomial Four Lines pattern Static Var Generator has not matured yet.

三相四线制静止无功发生器所用到的电流坐标变换理论虽然提出已有二三十年的时间了，但至今国内三相四线制静止无功发生器产的产品还不是很成熟。

Based on the discussion,a simple and clearly defined vector equation of kinematic error for robots,has been derived for practical use by means of space vector,characteristicsof space vecto...

据此，利用D-H 坐标变换与空间矢量的关系，以及空间矢量导数性质，推导了简洁实用、意义明确的机器人运动误差矢量方程，并就该方程在一般空间机构运动精度研究时的应用实例作了说明。

Based on the vector module's characteristics of invariance of translation and rotation coordinate transformation,a new fragment matching method is brought forward.

根据向量模在平移、旋转等坐标变换中具有不变性的特征，给出了一种新的碎片匹配算法。

In the Cartesian coordinate system,compute the image plane revolution vector quantity caused by scan mirror′s rotation applying coordinate conversion and geometrical optics.

在笛卡尔坐标系中，通过数学坐标变换和几何光学的方法对不同工作方式的航空相机由扫描反射镜沿俯角方向旋转引起目标像旋转问题作定量计算，为偏流补偿机构工程应用提供理论依据。

Due to the moving base existence of the minehunting and the frame structure characteristic of the sonar array, a new modeling thought in which the boat body coordinates is regarded as moving coordinates and the whirligig equation of sonar array compared with the self coordinates is founded on the basis of the Euler's theorem and the coordinate transform is introduced.

由于猎雷艇作为动基座的存在和声纳基阵的框架结构特点，提出了以艇体坐标系为运动坐标系，运用变形的欧拉定理和坐标变换建立声纳基阵相对自身坐标系的旋转运动方程的建模思想；将所建立的矢量形式的动力学模型展开整理，获得了状态矩阵形式的猎雷声纳基阵动力学方程，为系统动力学模型的实用化奠定了基础。

Due to the moving base existence of the minehunting and the frame structure characteristic of the sonar array,a new modeling thought in which the boat body coordinates is regarded as moving coordinates and the whirligig equation of sonar array compared with the self coordinates is founded on the basis of the Eulers theorem and the coordinate transform is introduced. The dynamic equations of minehunting sonar array with the state matrix form are founded by settling the dynamic models with the vector form. So it offers theory foundation for analyzing the dynamic characteristic and designing robust control.

由于猎雷艇作为动基座的存在和声纳基阵的框架结构特点，提出了以艇体坐标系为运动坐标系，运用变形的欧拉定理和坐标变换建立声纳基阵相对自身坐标系的旋转运动方程的建模思想；将所建立的矢量形式的动力学模型展开整理，获得了状态矩阵形式的猎雷声纳基阵动力学方程，为系统动力学模型的实用化奠定了基础。

In duty ratio control technique,a zero voltage vector is applied in each sampling period to reduce the torque ripple.

与矢量控制相比，直接转矩控制在静止的定子坐标系中进行计算，省去了复杂的坐标变换和电流调节

However, unlike the light source relative to the rest of the observer to see is the colorless astigmatism, and the light source relative motion of the observer to see is the red-shift light ( achromatous astigmatism occurs redshift of red-shift light ); Although the different inertial reference frame of the observer can see the speed of light, after the Lorentz transformation is the same as after c; but a different observer are exposed to the light energy is not the same achromatous (astigmatism energy and achromatous astigmatism occurs after the red-shift of red-shift of the light energy is out of the same ).

但是，与光源相对静止的观察者看到的是无色散光，而与光源相对运动的观察者看到的是红移光（无色散光发生红移后的红移光）；虽然，不同惯性参照系的观察者看到的光速，经过洛伦兹坐标变换后都一样为c；可是不同的观察者所承受到的光能量是不相同的（无色散光的能量和无色散光发生红移后的红移光能量是完全不相同的）。

The mathematical model of deflagration to detonation transition for coke p owder and oxygen mixture in one-dimensional closed system was established on th e basis of chemical reaction and two-phase reaction fluid mechanics theory. Num erical simulation of the process was successfully made through coordinate transf ormation and two-step display differential schemes.

根据化学反应和两相反应流体动力学理论，建立了焦炭粉-氧气混合物燃烧波在一维封闭空间内的爆燃爆震转捩现象的数学模型，运用坐标变换和M acCormack两步显式差分格式，成功地完成了过程的数值模拟。

By using predictive modeling approach of compositional data through hyperspherical transformation, the developing trend of the composition of export commodity in China is forecasted.

运用球坐标变换的成分数据预测方法，研究我国出口商品结构的动态变化规律，对中国出口商品结构的发展趋势进行分析与预测。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。