Motor controls

Electricity: motive power systems – Plural – diverse or diversely controlled electric motors – Plural – diverse motor controls

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Details

318 65, 318112, 74336R, H02P 546

Patent

active

053152182

ABSTRACT:
An electrically actuated shifting mechanism includes a reversible rail select electric motor and a reversible in-gear electric motor. Three groups of switches are provided to effect one-at-a-time operation of the motors with a center group of switches being used to effect operation of either the rail select or the in-gear motor and to determine the direction of operation of the motor. In one embodiment of the invention, the motor control circuitry also controls the operation of a main clutch motor. Four groups of switches are used to effect operation of the in-gear, rail select and clutch motors in desired directions. Pulse width modulation is used to effect simultaneous and out-of-phase operation of the in-gear and main clutch motors.

REFERENCES:
patent: 4296361 (1981-10-01), Archer
patent: 4405887 (1983-09-01), Tamura et al.
patent: 4651855 (1987-03-01), Grunberg
patent: 4670693 (1987-06-01), Kazami et al.
patent: 4857813 (1989-08-01), Matsumoto et al.
patent: 4873881 (1989-10-01), Edelen et al.
patent: 5063511 (1991-11-01), Mack et al.

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