查询词典 current coordinate

The concept of current regulation factor was defined and the analytic expression of the current regulation factor and the turning points' coordinate of the exterior characteristic curve by use of the mathematic model of magnetization curves were given.

利用电流调整率和拐点坐标分析了电机的恒压性能和带负载能力，得到了电机的恒压性能和带负载能力跟电机各结构参数和励磁电阻的关系。

Its thought is to change the model of the asynchronous motor through the coordinate, make it become direct current motor model, divided the electric current vector of the stator into according to the weight of two pieces of direct current with directional magnetic field of the rotor and controls, realize magnetism coherent and torque solve lotus root control , in the hope of the control result of the direct current reaching machine.

其思想就是将异步电动机的模型通过坐标变化，使之成直流电动机模型，将定子电流矢量分解为按转子磁场定向的两个直流分量并分别加以控制，从而实现磁通和转矩的解藕控制，以期达到直流电机的控制效果。

Happily, in SVG, px units are defined to be equivalent to the units established by the current coordinate system.

令人高兴的是，SVG中的px单位与当前坐标系统长度单位是相同的。

Maxwell's equations group in fact was already found in the basic experimental laws of electromagnetic phenomena, as well as a single magnetic pole does not exist on the facts and the integrated displacement current assumptions, using an international system of units, these equations can be written as: DivDW =ρ or DW =ρ(1) kiDivBq = 0 or Bq = 0 (2) kiCurlEBq =- Zt or × EqkZ =- BqZt (3) ZCurlHDWDW = jE Zt, or × HW = jE Zkt (4) Z-type in the Curl, and Div were vector operator curl and divergence, Micro-k points for the Hamiltonian operator, in the rectangular coordinate system,= iZZEkx jEy kqz, iE, jE, kq along Zx, y, z-axis unit vector, a vector for any AW are × AW = CurlAW, kAW = DivAW; DW for the electric displacement, Bq for the magnetic induction intensity, Eq, and HW, respectively i field and electric field strength, jY for the conduction current density,ρ the charge density for free.

麦克斯韦方程组实际上是当时已发现的电磁现象的基本实验定律以及单个磁极不存在的事实和位移电流假设的综合，采用国际单位制，这些方程式可写成：DivDW＝ρ或DW＝ρ（1）kiDivBq＝0或Bq＝0（2）kiCurlEBq＝－Zt或×EqkZ＝－BqZt（3）ZCurlHDWDW＝jE＋Zt或×HW＝jE＋Zkt（4）Z式中Curl和Div分别为矢量算符旋度和散度，为哈密顿微k分算符，在直角坐标系中，＝iZZEkx＋jEy＋kqz，iE，jE，kq是沿Zx、y、z轴的单位矢量，对任一矢量AW有×AW＝CurlAW，kAW＝DivAW；DW为电位移，Bq为磁感应强度，Eq和HW分别为电i场和磁场强度，jY为传导电流密度，ρ为自由电荷密度。

The measure unit adopts RENISHAW LP2DD probe. HEIDENHAIN linear and round encoders of the machine can as position feedback element. The measure system uses interruptive function of CNC system. When the probe is touched, CNC system will receive a interruptive signal and memory current coordinate position of CNC axes automatically, then after software deals with these information, the real measure data will be got. Compared with theory data, measure error data will be gained.

测量单元采用雷尼绍的LP2DD测头，用机床本身的反馈元件HEIDENHAIN的直线光栅和圆光栅作为位置反馈元件，利用数控系统的中断，当测头被触发时，给数控系统一个中断信号，数控系统自动记忆当前的数控轴的坐标位置，然后经过后续软件处理，得到实际测量值，再与理论值进行比较，得到测量误差值。

Converting the three-phase current coordinate by d-q transformation,picking out the fundamental active component,then the harmonic and reactive component was detected.

通过d-q变换对三相电流进行坐标变换，提取其基波有功分量，从而检测出其谐波与无功分量。

For the direct current decouple controller, the P1 adjustor抯 parameter of current and voltage loop抯 is designed. The correction of the designed parameter is testified by simulating on two phase synchronization coordinate and three phase stationary coordinate, the simulation wave is given.

对直接电流解耦控制器的电流环和电压环的PI调节器参数进行了设计，并通过在两相同步坐标系与三相静态坐标系的仿真验证了设计参数的正确性，同时也验证了直接电流解耦控制方案的可行性，给出了仿真波形。

Firstly, this thesis makes an introduces on the developement of PMSM servo system based on DSP. According to the control theory of AC PMSM servo system, this paper analyzes the coordinate transformation, the rotor magnetic field orientation and the current control strategy of AC servo system. The control strategy is i_d=0. The system is orientates towards rotor magnetic field. Then the mathmatic models of PMSM in d-q coordinate are set up.

本文首先对基于DSP的永磁同步电机伺服系统的发展概况进行了介绍；根据永磁同步交流伺服系统的基本控制理论，分析了交流伺服系统坐标变换原理、常用的磁场定向方式及电流控制策略，并给出i_d=0电流控制策略及永磁同步电机按转子磁场定向的控制方式，从而建立永磁同步电机d-q坐标系下的数学模型。

By means of coordinate transformation, the part of stresses in the expression of stress field caused by temperature at the moment of application of transient current on the plate with a side-crack was separated and expressed in polar coordinate.

采用坐标变换的方式，将单边裂纹载流薄板通电瞬间由温度产生的应力场表达式中的各应力分量分离，并用极坐标进行表示。

The paper explains the basic operation of the new type of GPS 72, and emphasizes its application in forestry survey and planning and the use method of its interface setting, parameter setting, known coordinate storage, current place coordinate storage, spot navigation, primary navigation, area survey and declination survey.

在叙说新型GPS72基本操作的同时，重点介绍了该机在林业调查规划中的应用，以及该机型的界面设置、参数设置、存储已知坐标、存储现地坐标、单点导航、航线导航、面积测量和罗偏角(指罗盘仪所测方位角与公里网坐标方位角的差)测算等的使用方法。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷