The software has been programmed with C. Sensorless PMSM dual close-loop vector control with feedback of speed and current are realized.
软件采用C语言编写，实现了无位置传感器控制算法及转速和电流双闭环矢量控制；
In the system with little tension fluctuation and numeric, by compensating the reeling in and out rate, adopting vector close-loop control can get better effects.
在张力波动范围窄、张力数值较小的控制系统中，采用矢量闭环控制，通过对收放卷速度的补偿，能收到较好的效果。
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。
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。
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