System for controlling the speed of a motor driven by an unregul

Details System for controlling the speed of a motor driven by an unregul System for controlling the speed of a motor driven by an unregul

1995-08-28

1997-09-02

Ro, Bentsu

Electricity: motor control systems

Closed loop speed control system for dc motor with commutator

Armature control by digital or combined analog and digital...

318268, 318432, H02P 517

Patent

active

056640471

ABSTRACT:
A method for controlling the speed of a motor driven by an unregulated voltage supply is disclosed. The disclosed method comprises obtaining a ripple signal (V.sub.R) representative of the ripple component of the supply voltage, and modulating the motor current (I.sub.M) in response to at least the ripple signal to maintain the speed of the motor at a prescribed target speed.

REFERENCES:
patent: 4358730 (1982-11-01), Beifus
patent: 4622500 (1986-11-01), Budelman, Jr.
patent: 5250890 (1993-10-01), Tanamachi et al.
patent: 5331261 (1994-07-01), Brown et al.
patent: 5350989 (1994-09-01), Wedeen
patent: 5481451 (1996-01-01), Kuwahara

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