Motor driving apparatus and motor driving method

Details Motor driving apparatus and motor driving method Motor driving apparatus and motor driving method

2006-08-08

2006-08-08

Duda, Rina (Department: 2837)

Electricity: motive power systems

Constant motor current, load and/or torque control

C318S434000, C318S434000, C318S132000, C318S254100

Reexamination Certificate

active

07088067

ABSTRACT:
A motor driving apparatus has a driver circuit configuration capable of individually adjusting three phase coil currents. Coil current waveforms are formed to have a total of three phase shaft direction forces to be zero in compliance with predetermined mathematical expressions, and thus, three phase coil current profiles can be made independent of one another, and vibration-causing factors attributed to the fact that a certain phase is in an non-energized state are corrected by adjusting the current profiles of the other phases. Consequently, the vibration and the noise can be reduced.

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patent: 6940239 (2005-09-01), Iwanaga et al.
patent: 2003/0102832 (2003-06-01), Iwanaga et al.
patent: 2892164 (1999-02-01), None
patent: 2003-174789 (2003-06-01), None

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