| 摘要 |
PROBLEM TO BE SOLVED: To provide a driving method that allows a stable operation of a DC brushless motor through a long cable. SOLUTION: The motor comprises a rotor 13 that mounts a winding having a plurality of phases and is connected through the long cable 20 and an arm- shaped power-switching circuit 12 that feeds each predetermined positive or negative voltage to the winding having a plurality of phases. By the designation of a driving-voltage vector that is a combination of outputs of each phase of the arm-shaped power-switching circuit, a combination of power-switching elements to which each phase of the arm-shaped power-switching circuit is designated shall be operated, and a power-drop vector Z1 is compensated when the driving-voltage vector is designated. |
