Brushless motor

Details Brushless motor Brushless motor

2008-10-08

2011-11-29

Duda, Rina (Department: 2837)

Electricity: motive power systems

Synchronous motor systems

Brushless motor closed-loop control

C318S400320

Reexamination Certificate

active

08067910

ABSTRACT:
A brushless motor includes: a permanent magnet; a driving coil moving relative to the permanent magnet; a sensor coil disposed to the permanent magnet so as to generate a sensor coil induced voltage having a same phase of a driving coil induced voltage generated in the driving coil; and a driving circuit applying a driving voltage to the driving coil, the driving voltage having a same phase of the sensor coil induced voltage generated in the sensor coil.

REFERENCES:
patent: 3745435 (1973-07-01), Futagawa et al.
patent: 4347536 (1982-08-01), Miyashita et al.
patent: 4578606 (1986-03-01), Welterlin
patent: 5349257 (1994-09-01), Hernden
patent: 5461293 (1995-10-01), Rozman et al.
patent: 5761375 (1998-06-01), Naito
patent: 6008603 (1999-12-01), Jones et al.
patent: 03-230791 (1991-10-01), None

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