DC motor control in electronic sewing machine

Details DC motor control in electronic sewing machine DC motor control in electronic sewing machine

1992-05-19

1994-08-23

Shoop, Jr., William M.

Electricity: motor control systems

Closed loop speed control system for dc motor with commutator

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

388847, 388903, 3889075, 388930, 388934, H02P 5168

Patent

active

053414543

ABSTRACT:
A load of an electronic sewing machine is self-diagonosed by a control system to cause a DC motor to be operated under control to drive upper and lower shafts of the sewing machine. The control system includes an evaluating device to which a voltage value applied to the DC motor and a rotating speed of the DC motor, both detected, are inputted for determining a current value supplied to the DC motor and a power loss of the DC motor. These data are supplied to a fuzzy inference unit for inferring an optimum rotating speed of the DC motor. A control command signal representing an excessive degree of the actual power loss in reference to the rated power loss is outputted from the fuzzy inference unit to the DC motor for the control of the electric power to be supplied thereto.

REFERENCES:
patent: 4384241 (1983-05-01), Stillhard
patent: 4545314 (1985-10-01), Fujikawa
patent: 4574226 (1986-03-01), Binder
patent: 4628434 (1986-12-01), Tashiro et al.
patent: 4628435 (1986-12-01), Tashiro et al.
patent: 4673851 (1987-06-01), Disser
patent: 4691653 (1987-09-01), Neki et al.
patent: 4692676 (1987-09-01), Dohi et al.
patent: 4738211 (1988-04-01), Nakamara et al.
patent: 4749923 (1988-06-01), Chieng
patent: 4749927 (1988-06-01), Rodal et al.
patent: 4763052 (1988-08-01), Lundin et al.
patent: 4879639 (1989-11-01), Tsukuhara
patent: 4967129 (1990-10-01), Tanaka
patent: 5057757 (1991-10-01), Orii

Affiliated with

Also associated with

Rating

DC motor control in electronic sewing machine does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with DC motor control in electronic sewing machine, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and DC motor control in electronic sewing machine will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-508746