Brushless motor control apparatus for pump

Details Brushless motor control apparatus for pump Brushless motor control apparatus for pump

2006-11-27

2009-08-18

Leykin, Rita (Department: 2837)

Electricity: motive power systems

Synchronous motor systems

Brushless motor closed-loop control

C318S700000, C318S400040, C318S400060, C318S601000, C318S611000, C700S075000, C700S069000

Reexamination Certificate

active

07576503

ABSTRACT:
A brushless motor controller for use in a fuel pump detects a rotor phase based on an induced voltage in each phase coil of a brushless motor, and controls energization of the each phase coil based on the detected rotor phase. A control circuit of the controller is arranged to check the induced voltage by using three reference voltages as judgment values, convert a result of the check into a logic signal, and detect the rotor phase based on a prescribed change of the logic signal.

REFERENCES:
patent: 5592058 (1997-01-01), Archer et al.
patent: 6462491 (2002-10-01), Iijima et al.
patent: 6479956 (2002-11-01), Kawabata et al.
patent: 6879129 (2005-04-01), Tazawa et al.
patent: 7064513 (2006-06-01), Fenley
patent: 7271556 (2007-09-01), Kishibe et al.
patent: B2 2642357 (1989-01-01), None
patent: A 2003-088080 (2003-03-01), None

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