这还是比较容易想到的，假如这是位置矢量，这是它的变化量。
Well, it might be good to think of, maybe, the position vector, and maybe its variation.
也许我应该用位置矢量来考虑,如果你们觉得有帮助的话。
Or, maybe I should insteadthink of it in terms of a position vector if it helps you.
矢量数据指的是通过几何结构定义的数据，如线段表示街道，而点表示位置。
Vector data refers to data defined by geometric constructs, such as line segments representing a street or points representing single locations.
我断言，这个位置矢量在平面上。
根据它的原理，我们通常用v表示,这里的V更代表速率而不是矢量，你能通过,对一个关于时间的位置向量求导得到它。
And, the way we can get it, so, it's called usually V, so, V here stands for velocity more than for vector. And, you just get it by taking the derivative of a position vector with respect to time.
来看看位置矢量的改变。
如果你看一下任何时刻运动时的，位置矢量和速度矢量，它们决定了某个平面。
So, if you just look at the position vector, and the velocity vector for any motion at any given time, then together, they determine some plane.
你可以说，位置矢量在另一个时间或在任何时间，无论如何，位置矢量始终在这个平面上。
You could say the position vector at another time, or at any time, but in fact, what's also true is that the velocity vector is in the plane.
利用这种运动矢量生成输出像素，但是该输出像素有可能(实际上是很可能)与输出图像中的所需像素位置未精确地空间对准。
An output pixel is generated using such motion vectors, but it is possible (indeed, likely) that the output pixel is not exactly spatially aligned with a required pixel position in the output image.
目的探讨位置矢量分析在偏瘫患者平衡功能评定中的应用。
Objective to investigate the application of position vector in balance evaluation of stroke patients with hemiplegia.
而通过采用相关计算进一步细分灰度投影数据，可以提高图像运动特征位置信息的精度，获得亚像元级的图像运动矢量。
Using correlation calculation to further subdivide gray project data, precision of image motion characteristic position information was improved, and sub pixel image motion vector could be gotten.
系统采用位置、速度和电流环三环控制，并结合空间矢量脉宽调制（SVPWM）算法。
The servo control system combines position loop, speed loop, current loop with algorithm of space vector pulse width modulation(SVPWM).
测量得到了三个不同周向位置下的涡量图和速度矢量图，并观测到了叶顶泄漏涡的涡旋结构。
The velocity vector and vortical contour in three different circumference positions were successfully acquired and the structure of the tip leakage vortex was clearly illustrated.
提出了一种基于电压空间矢量调制的随机脉冲位置pwm方法，并着重讨论了采用80c196KC单片机实现的方法，给出了其软件设计。
A novel randomized pulse position PWM scheme based on voltage space vectors is proposed. Its realization by the microcontroller 80c196kc is presented. The software design is discussed.
针对矢量控制交流感应电机伺服系统，提出并设计一种模糊滑模pd型位置控制器。
This paper proposed a fuzzy sliding PD-type position controller for vector controlled induction motor servo drive.
这种方法是利用参考基点的笛卡尔坐标和参考基矢量的笛卡尔分量描述物体的位置与姿态。
This kind of method describes the position and attitude of objects by utilizing Cartesian coordinates of reference base points and Cartesian components of reference base vector.
本文取得如下成果：借助矢量法、约束方程和动能定理分别构造出机械手的位置逆解模型、速度雅克比矩阵、质量惯性矩阵。
With the aid of vector method, constraint equation, kinetic energy consideration, the inverse position model, Jacobian matrix and mass matrix have been developed.
对关节间隙变量采用二维矢量表示法，分析了机器人关节间隙对机器人末端位置重复精度的影响。
The effects of the joint clearance variables to the position repeatability of the robot end effector are analyzed using a two-dimensional vector method to define the joint clearance variables.
本文用半波带法对夫琅禾费光栅衍射进行分析该方法和常用的振幅矢量法相比，分析衍射条纹的位置更要快捷，明了。
The authors show that using the half-wave strip method to deduce the bright and dark fringe conditions of Fraunhofer grating diffraction is simpler than the amplitude vector method.
针对典型的推力矢量电液位置伺服系统提出参考模型模糊控制控制方法(MRFC)。
Model reference fuzzy control (MRFC) is introduced for a classical thrust vector electrohydraulic servo control system.
首先，计算顶点在世界位置及光源位置之间的矢量。
First, calculate the vector between the vertex in it's world position and the light position.
通过代数法得到的相似平台3upu并联机构奇异位置，与用矢量法对一般3upu并联机构所作的分析一致。
The singular position of similar platform 3upu reached by algebraical method is identical to the position of general 3upu analysized by vector method.
本文是对永磁同步电机的扩展卡尔曼无位置算法（EKF）的矢量控制系统的研究。
The dissertation researches on the PMSM vector control system using Extended Kalman Filtering (EKF) algorithm.
系统引入了矢量图图层与位图图层的交互，矢量图层可以和位图图层任意叠加、交换位置。
System introduces alternation between vector map layers and bitmap layers , they can splice randomly and change position.
地磁场矢量是卫星所在位置的函数，通过对地磁场的测量，即可实现对近地小卫星的自主导航。
Magnetic field vector is a function of the position where the satellite stays. Thus autonomous navigation for small satellite can be achieved by measuring the magnetic field vector.
通过梯度矢量流模型迭代求解，解决道路凹陷位置逼近问题，最终实现道路提取。
At the same time, how to get the approximate road hollow position is solved to realize the road contour extraction by gradient vector flow model with iterative solution.
应用英飞凌单片机的定时器模块模拟计算出更多的位置信号，从而实现在低成本、高速运行情况下电机的空间矢量控制。
The timer module of Infineon was used to calculate more position signals, helping PMSMs run with high speed and lower cost.
提出了矢量化成果应满足的三个条件，对基于位置关系的地块矢量化成果检核算法进行了研究。
It brings forward three terms which should be contented for the scanned vectorization production, and studies the algorithms for land scanning check based on location relation.
采用D-H后置法建立了4R机器人运动方程，建立机器人执行机构在空间相对位置关系的数学模型，由此可解出手部位置和用单位矢量方向余弦表示的姿态。
A kinematics model by post D-H method for 4R-robot was offered in this paper, which derived the manipulator finger position and its attitude with unit vectors of direction cosine.
采用D-H后置法建立了4R机器人运动方程，建立机器人执行机构在空间相对位置关系的数学模型，由此可解出手部位置和用单位矢量方向余弦表示的姿态。
A kinematics model by post D-H method for 4R-robot was offered in this paper, which derived the manipulator finger position and its attitude with unit vectors of direction cosine.
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