Method and device for controlling speed of a washing machine mot

Details Method and device for controlling speed of a washing machine mot Method and device for controlling speed of a washing machine mot

1994-11-16

1997-11-04

Elmore, Reba I.

Bleaching and dyeing; fluid treatment and chemical modification

Fluid treatment

Manipulation of liquid

68 1204, 364161, D06F 3302

Patent

active

056826346

ABSTRACT:
This invention relates to a method and apparatus for controlling the speed of a washing machine motor by varying the number of revolutions and changing direction of rotation of the motor to control the water current of the washing machine. The invention detects the actual speed of the washing machine motor at every half cycle of ordinary use power frequency, determines speed error by comparing the detected actual speed with an ordered speed, determines a speed state from the speed error, calculates a proportional integration value according to the determined speed state, and scales the calculated proportional compensation value into an angular value. The washing machine's motor speed is controlled using the scaled angular value.

REFERENCES:
patent: 4711104 (1987-12-01), Ikeda
patent: 4959596 (1990-09-01), MacMinn et al.
patent: 4972134 (1990-11-01), Getz et al.
patent: 5168172 (1992-12-01), Jung
patent: 5220814 (1993-06-01), Imai et al.
patent: 5233847 (1993-08-01), Tanaka
patent: 5280423 (1994-01-01), Imai et al.
patent: 5333474 (1994-08-01), Imai et al.
patent: 5341452 (1994-08-01), Ensor
patent: 5534763 (1996-07-01), Williams et al.

Affiliated with

Also associated with

Rating

Method and device for controlling speed of a washing machine mot does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and device for controlling speed of a washing machine mot, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and device for controlling speed of a washing machine mot will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1823852