Apparatus and method for controlling an electric motor

Details Apparatus and method for controlling an electric motor Apparatus and method for controlling an electric motor

1994-09-30

1996-06-11

Ip, Paul

Electricity: motive power systems

Periodic, repetitious or successive operations control of...

318DIG2, 318444, H02P 104

Patent

active

055258786

ABSTRACT:
A feedback control circuit limits current being supplied to an electric drive motor. The motor drives a load cyclically along a path, and the load closes a switch when it passes a predetermined position. This activates a timing circuit which times out after a predetermined delay. If the load does not return to the predetermined position at the end of the prescribed delay time, then an oscillator circuit is triggered into operation to periodically terminate current flow to the motor. This provides cooling periods and enables the motor to exert repeated, temporary high torque efforts to restore normal operation.

REFERENCES:
patent: 4075501 (1978-02-01), Kondo
patent: 4091317 (1978-05-01), Roszyk et al.
patent: 4314186 (1982-02-01), Gille et al.
patent: 4320329 (1982-03-01), Gille et al.
patent: 4355270 (1982-10-01), Cook et al.
patent: 4588935 (1986-05-01), Kaneiwa et al.
patent: 4611154 (1986-09-01), Lambropoulos et al.
patent: 4663575 (1987-05-01), Juzswik et al.
patent: 4689535 (1987-08-01), Tsunoda et al.
patent: 4961033 (1990-10-01), Hirota
patent: 5030899 (1991-07-01), Nishibe et al.
patent: 5086260 (1992-02-01), Ito
patent: 5235260 (1993-08-01), Furukoshi
patent: 5285138 (1994-02-01), Okada
patent: 5404085 (1995-04-01), Resch et al.
patent: 5412296 (1995-05-01), Chien et al.

Affiliated with

Also associated with

Rating

Apparatus and method for controlling an electric motor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus and method for controlling an electric motor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for controlling an electric motor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-354079