Method of controlling reel drive

Details Method of controlling reel drive Method of controlling reel drive

1990-05-03

1992-02-04

Stodola, Daniel P.

Winding, tensioning, or guiding

Strand tensioning device

Tortuous course

318 7, 360 7314, G11B 1532

Patent

active

050853791

ABSTRACT:
A method of controlling reel drive so that a magnetic tape is transported from one reel of first and second reels to the other between them at predetermined transport velocity including the steps of forming a control signal obtained by operationally determining predetermined expressions having functions of the rotational numbers of the two reels, indicating a variation in the turn numbers of the magnetic tape on the reels and of the winding radii of the reels and controlling at least one of the reels based on a comparison of the control signal with informations of rotational angular velocity of the one reel actually detected.

REFERENCES:
patent: 3764087 (1973-10-01), Paananen et al.
patent: 3984868 (1976-10-01), Ragle et al.
patent: 4015799 (1977-04-01), Koski et al.
patent: 4095146 (1978-06-01), Sparman et al.
patent: 4497459 (1985-02-01), Yoshino et al.
patent: 4620241 (1986-10-01), Ono
patent: 4739950 (1988-04-01), Goker et al.
patent: 4817887 (1989-04-01), Harigaya et al.
IBM Technical Disclosure Bulletin, vol. 14, No. 6, 11/1971.

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