Motor drive control device which uses pulse width modulation to

Details Motor drive control device which uses pulse width modulation to Motor drive control device which uses pulse width modulation to

1995-09-06

1997-11-11

Sircus, Brian

Electricity: motor control systems

Closed loop speed control system for dc motor with commutator

Field control, or field and armature control, by analog...

318254, H02P 500

Patent

active

056872771

ABSTRACT:
A motor drive control device which drives a motor in accordance with a pulse width modulated input signal, a first binary signal indicating a rotation direction for driving the motor and a second binary signal indicating whether drive of the motor is ON or OFF. The motor drive control device includes a logic circuit receiving the pulse width modulated input signal, the first binary signal and the second binary signal and, in response, producing a first pulse width modulated output signal and a second pulse width modulated output signal which together indicate a rotation direction and rotation speed for driving the motor.

REFERENCES:
patent: 5204593 (1993-04-01), Ueki
patent: 5296792 (1994-03-01), Knierim
patent: 5444622 (1995-08-01), Takeshima et al.
patent: 5469032 (1995-11-01), Otake
patent: 5486747 (1996-01-01), Welch

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