间接观测 meaning in Chinese

indirect measurement
indirect observation
indirect operation

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。