In engineering , vector control ( vc ) is called as filed orientation control ( foc ) . the principle of foc is to divide stator current into two dc components . one of them is oriented to the rotor magnetic flux , another is oriented to the torque . the operating process can be carried out by transforming coordinate in magnitude flux and torque keeping consistent conditions 矢量控制一般稱為磁場(chǎng)定向控制,該控制理論的原理是在轉(zhuǎn)子磁通和轉(zhuǎn)矩保持不變的情況下通過(guò)坐標(biāo)變換將異步電機(jī)的定子電流分解為按轉(zhuǎn)子磁場(chǎng)定向的兩個(gè)分量分別進(jìn)行控制,從而實(shí)現(xiàn)轉(zhuǎn)子磁通和轉(zhuǎn)矩的解耦。