Method for positioning a sensor for a web movement control devic

Details Method for positioning a sensor for a web movement control devic Method for positioning a sensor for a web movement control devic

1993-02-10

1995-01-10

Williams, Hezron E.

Measuring and testing

Testing of apparatus

B65H 23032, B65H 2602

Patent

active

053796560

ABSTRACT:
A method for positioning a sensor for a web movement control device, in which the sensor executes an edge search process, in order to achieve a rapid and exact positioning of sensors by specifying a relatively early stop threshold for the sensor movement, after-running of the sensor is detected in that after the after-running position is detected by the sensor signal the difference between the preset stop value and the stop value actually reached is formed and specified as the new stop value, after which the edge search process is repeated with the corrected stop value.

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patent: 4049213 (1977-09-01), Hank et al.
patent: 4077579 (1978-03-01), Scleski et al.
patent: 4331274 (1982-05-01), Halewijn et al.
patent: 4648539 (1987-03-01), Dingerkus
patent: 4848632 (1989-07-01), Mack et al.
Japanese Patent Abstract A-60 170 495 Sep. 1985.

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