under commutation的意思|示意

The exact rotor position is required while a brushless DC motor (BLDCM) is under commutation and control. Howere, posi2 tion sensors have some fatal defects.

无刷直流电机的换相和控制都需要准确的转子位置信息，然而安装转子位置传感器有其难以克服的缺点。

Now, under the terms of Obama's commutation announced by the White House Tuesday, Manning is set to be freed on May 17 of this year, rather than in 2045.

现在，根据白宫周二宣布的奥巴马的减刑令，曼宁将于今年5月17日，而不是2045年获释。

The exact rotor position is required while a permanent magnet brushless servo motor (PMBSM) is under commutation and control. Howere, position sensors have some fatal defects.

永磁无刷伺服电机的换相和控制都需要准确的转子位置信息，然而位置传感器有其难以克服的缺点。