Advancing material of indeterminate length – With material-responsive control means – To position material laterally
Patent
1990-01-16
1991-10-22
Stodola, Daniel P.
Advancing material of indeterminate length
With material-responsive control means
To position material laterally
B65H 2302
Patent
active
050587935
ABSTRACT:
Apparatus for guiding a strip traveling along a selected path, which apparatus comprises a primary strip position correcting mechanism, such as a payout reel or steering roll that engages a strip at a first location for changing the position of the strip as the strip moves along from the first position to a remote control point. The strip correcting mechanism includes a primary control loop with an actuator for changing the strip position and a feedback control loop that compares the actual strip position with an adjustable reference value to control the position of the moving strip. An edge sensor at the remote control point on the strip path creates an output error signal generally proportional to the deviation of the strip edge at the remote control point from a preselected edge position. This error signal is used for periodically changing the reference value of the position correcting mechanism in the primary loop in accordance with the output error. The apparatus employs the concept of creating a series of counting bursts each having a count pulse, the number of which is determined by a given frequency component and a selected duration component. At least one of these components defining the count pulses of each counting bursts is varied in accordance with the magnitude of the output error signal so the reference value of the primary loop is changed by the output error signal.
REFERENCES:
patent: 3268140 (1966-08-01), Rouyer
patent: 3313461 (1967-04-01), Andersen
patent: 3568904 (1971-03-01), Kurz
patent: 4470555 (1984-09-01), Lawson
patent: 4485982 (1984-12-01), St. John et al.
patent: 4557372 (1985-12-01), Rajagopol
patent: 4648539 (1987-03-01), Dingerkus
patent: 4860964 (1989-08-01), Ishii et al.
Hung Chih P.
Neville Harvey E.
Bowen Paul
Stodola Daniel P.
The North American Manufacturing Company
LandOfFree
Apparatus for guiding a moving strip 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 for guiding a moving strip, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for guiding a moving strip will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-103483