direct field meaning in Chinese

直接声场

• direct:    adj. 1.笔直的，一直线的；正面的。 2.直接的。 ...
• field:    n. 1.原野，旷野；(海、空、冰雪等的)茫茫一片。 2 ...

Examples

1. The proof of cancelling the direct field under the system of the column - shaped multiply medium
   在柱状多层介质体系下直接场被抵消的证明
2. Matrix converters have received considerable attention in recent years , but the study focus is on matrix converter per se . a combined control strategy for matrix converter fed induction motor drive system is proposed , which implements both space vector modulation of matrix converter and direct field oriented control of induction motor
   摘要提出了一种适用于矩阵变换器供电的异步电动机调速系统的组合控制策略，同时实现了矩阵式变换器的空间矢量调制和异步电动机的定子磁场定向直接转矩控制。
3. On the basis of analyszing modern ac speed regulation technology , the thesis deduceds in detail the voltage space vector pulse width modulation ( svpwm ) technology and compares to the control characterics betweem direct field oriented control ( foc ) and indirect field oriented control ( ifoc ) for induction motor
   本文在分析各种现代交流调速技术的基础上，详细推导了对称的空间矢量脉宽调制( svpwm )技术的基本原理，比较了异步电动机直接磁场定向控制和间接磁场定向控制特点的异同。
4. The thesis deduces detailedly flux observer and speed observer for a novel sensorless direct field oriented control , and stimulation results are also presented . then by using stimulation tool ( power system blocket ) of power system based on matlab , svpwm are applied to speed sensorless indirect field oriented control system
   在对异步电动机间接磁场定向控制系统研究的基础上，对一种新型的无速度传感器直接磁场定向控制策略的磁链观测器，速度观测器进行了理论推导，仿真结果验证了这种控制算法的可行性。然后利用matlab的电力系统的仿真工具( powersystemblocker ) ，把svpwm技术应用在无速度传感器间接磁场定向控制系统，此方法直观明了。