Brake system and method for a DC brush motor without a hall...

Details Brake system and method for a DC brush motor without a hall... Brake system and method for a DC brush motor without a hall...

2006-05-03

2008-03-04

Duda, Rina (Department: 2837)

Electricity: motive power systems

Switched reluctance motor commutation control

C318S132000, C318S434000, C318S362000

Reexamination Certificate

active

07339335

ABSTRACT:
A brake system and method for a direct current brushed motor without a Hall sensor are provided. After the system is activated, the motor is pre-braked in order to detect and record the stationary armature current while the motor is in a stationary state. As the motor is required to be braked, a reverse control voltage is generated and then the armature current value is detected. When the detected armature current value is equal to the stationary armature current value, the operation of braking the DC brush motor is accomplished. The invention can achieve the goal of braking the motor to a stop quickly, no matter which state the motor is in. Besides, it can be applied to different kinds of motors.

REFERENCES:
patent: 3617836 (1971-11-01), Henry
patent: 4962338 (1990-10-01), Daggett et al.
patent: 4969756 (1990-11-01), Villec et al.
patent: 6326757 (2001-12-01), Aoki et al.
patent: 2004/0002775 (2004-01-01), Kerner et al.
patent: 2004/0022153 (2004-02-01), Shen

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