Applying passivity theory, the speed controller and the torque controller are designed for the rotor flux indirect orientation and the electromagnetic torque asymptotically tracking.

• 运用无源性的相关原理，以转子磁场间接定向和电磁转矩渐近跟踪为控制目标，分别给出了转矩控制器和转速控制器的设计方案。