Checking system for checking the functional integrity of the ope

Details Checking system for checking the functional integrity of the ope Checking system for checking the functional integrity of the ope

1980-09-25

1983-08-02

Krass, Errol A.

Boots, shoes, and leggings

66 752, 371 20, 371 29, G06F 1546, D04B 700

Patent

active

043969909

ABSTRACT:
A system for checking the functional state of the operating magnets in a tbed knitting machine includes a microprocessor, a keyboard, a display unit, and sensors detecting short-circuit and open-circuit conditions in the magnets and their connections. In order to avoid dismantling the machine to check the magnets, the magnets are subjected in turn to pulse sequences at respective different frequencies and their behavior is monitored. One can monitor the vibrational noise of the magnets or the rise time of current and voltage in the magnets. The checking process can be initiated automatically, for example each time the machine is started up, or controlled manually via the keyboard. Frequencies within the range of 1 to 50 Hz are preferably used.

REFERENCES:
patent: 2781127 (1957-02-01), Becker, Jr.
patent: 3697867 (1972-10-01), Kleesattel
patent: 4034194 (1977-07-01), Thomas et al.
patent: 4320506 (1982-03-01), Farazi et al.

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