spatial vector meaning in English
空间向量
Examples
- The paper analyzes the structure of grass ' s vector files and several basic indexes " methods for spatial data . lt also compares the characteristics of the postgis , peegree , openmap , etc . on the other hand , mis paper researches the spatial vector data index arithmetic
除此之外，本课题对于空间矢量数据的索引算法进行了一定的研究，并详细介绍了r树模型的基本算法，同其他空间索引算法进行了一定的比较，简要总结了各种算法的基本特征。 - In the paper , the principle and actualizing means of spatial vector control have been systemically discussed and the control software has also been designed . the magnitude of both the rotor flux and the current in torque component have been estimated by using a flux observer , which is developed based on field orientation control principle . the results show that the observer has a good feature due to its speed being calculated without speed sensor or additional hardware
本文对矢量控制的原理、控制方法以及控制实施策略进行了较为系统的分析与研究，利用速度间接观测理论，建立了异步电机的磁通观测器，电机的定子磁通和电流的转矩分量可以通过磁通观测器估算出来，从而得到电机的转速，并由此建立了异步电机无速度传感器矢量控制的理论数学模型和相应的控制算法，在此基础之上，利用工程中常用的电机专用dsp芯片tms320lf2407作为处理器，对异步电机进行变频调速控制。 - The main technical module of processing gis spatial information of land desertification is designed , which can carry out the spatial overlay of vector data in three periods , extract as well as process attributative information and transform the spatial vector data into visualizing data . the gis database of land desertification is established
本研究设计了土地沙漠化gis空间信息处理的主要技术模块，即三期矢量数据的空间叠加、属性的信息提取与处理、空间矢量数据向可视化数据库的转化，建立了土地沙漠化gis数据库。