Finally, the indirect vector control system is made as the research target and double close loop control systems which contain synchronous current inside loop and speed outside loop are introduced.
首先对磁场定向控制理论进行了详细分析，比较后采用间接磁场定向的控制方法，并建立基于同步电流内环、转速外环的双闭环控制结构。
The double direction alternate control strategy is applied to reduce the blindness of the target selected and approved for improving the reasoning efficiency.
利用双向交替控制策略减少选择目标和证实目标的盲目性，提高了推理效率。
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