中文说明：由转子磁场定向的矢量控制是一种广泛而有效的技术。其目的是转矩和转子磁链，类似于独立励直流电动机单独调节。要达到这一目的;"d"轴被固定的转子磁链，所以交轴转子磁通将变为 null。
English Description：
Rotor field oriented vector control is a widely used and effective technique. Its purpose is to adjust the torque and rotor flux, similar to the independent excitation DC motor. To achieve this goal, the "d" axis is fixed by the rotor flux, so the cross axis rotor flux will become null.