Motor control

Details Motor control Motor control

1990-02-09

1991-05-07

Ro, Bentsu

Electricity: motor control systems

Closed loop acceleration control system for dc motor with...

Field control, or field and armature control

318274, H02P 118

Patent

active

050143360

ABSTRACT:
In a shunt wound d.c. motor for driving centrifuges, an apparatus for obtaining smooth acceleration by regulating the bottom speed range in accordance to a preset slope current and then accelerating the armature current with full excitation. Smooth braking is also achieved by applying to the field current the full excitation during deceleration and a preset slope current thereafter.

REFERENCES:
patent: 3599064 (1971-08-01), Friedman
patent: 4008423 (1977-02-01), Christianson et al.
patent: 4019107 (1977-04-01), Dixon et al.
patent: 4037144 (1977-07-01), Ohmae et al.
patent: 4052647 (1977-10-01), Thompson
patent: 4224558 (1980-09-01), Hays
patent: 4247807 (1981-01-01), Wilson
patent: 4284932 (1981-08-01), Kawada et al.
patent: 4366420 (1982-12-01), Omae et al.
patent: 4649328 (1987-03-01), Leonard et al.

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