Acceleration controller for laundry machine motor

Details Acceleration controller for laundry machine motor Acceleration controller for laundry machine motor

1994-02-18

1995-03-14

Wysocki, Jonathan

Electricity: motor control systems

Closed loop speed control system for dc motor with commutator

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

318138, 318254, 318439, 318281, 3889075, H02P 517

Patent

active

053982983

ABSTRACT:
A method of cyclically accelerating an electric motor particularly for use in a laundry machine. A desired speed, direction of rotation and acceleration time is set and power is applied to the motor in a series of incremental steps, each successive step corresponding to an increase in the level of power applied during the previous step. The steps are initially estimated to be sufficient to enable sufficient energy to be supplied to the motor for it to reach the desired speed in the desired acceleration time. The speed of the motor is monitored and the steps of accelerating the motor are repeated with the series of incremental steps adjusted to adjust the supply of energy to the motor dependant on the speed reached in the acceleration time of the previous cycle.

REFERENCES:
patent: 4449079 (1984-05-01), Erdman
patent: 4540941 (1985-08-01), Boyd, Jr. et al.
patent: 4636936 (1987-01-01), Boyd, Jr. et al.
patent: 4642536 (1987-02-01), Boyd, Jr. et al.
patent: 4642537 (1987-02-01), Young
patent: 4654566 (1987-03-01), Erdman
patent: 4857814 (1989-08-01), Duncan

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