Sensorless motor control circuit without employing any mask...

Details Sensorless motor control circuit without employing any mask... Sensorless motor control circuit without employing any mask...

2006-07-04

2006-07-04

Ro, Bentsu (Department: 2837)

Electricity: motive power systems

Limitation of motor load, current, torque or force

C318S254100

Reexamination Certificate

active

07071646

ABSTRACT:
A motor control circuit includes a detector circuit, a comparator circuit, a sifter circuit, and a driver circuit. The detector circuit is coupled to a plurality of coils of a motor for generating a detection signal. The detection signal is in association with a terminal voltage of a selected-to-be-floated coil of the plurality of coils. Based on comparison between the detection signal and a reference voltage, the comparator circuit generates a comparison signal. The sifter circuit receives in sequence a first-time crossing and a second-time crossing from the comparison signal, and generates an indication signal in response to the second-time crossing. The driver circuit controls a commutation of the motor in response to the indication signal.

REFERENCES:
patent: 5057753 (1991-10-01), Leuthold et al.
patent: 5068582 (1991-11-01), Scott
patent: 5285135 (1994-02-01), Carobolante et al.
patent: 5317243 (1994-05-01), Cameron
patent: 5428276 (1995-06-01), Carobolante et al.
patent: 5517095 (1996-05-01), Carobolante et al.
patent: 5691856 (1997-11-01), Kardash
patent: 5909095 (1999-06-01), Sakti et al.
patent: 5929577 (1999-07-01), Neidorff et al.
patent: 6111372 (2000-08-01), Nishimura
patent: 6504328 (2003-01-01), Gontowski, Jr.
patent: 6633145 (2003-10-01), Shao et al.
patent: 6901212 (2005-05-01), Masino

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