Winding – tensioning – or guiding – Unwinding and rewinding a machine convertible information... – Carrier speed or tension control
Patent
1995-01-19
1996-07-30
Nguyen, John Q.
Winding, tensioning, or guiding
Unwinding and rewinding a machine convertible information...
Carrier speed or tension control
2423345, 2423346, 360 71, B65H 5938, G11B 1546, G11B 2342
Patent
active
055403980
ABSTRACT:
A torque command is applied to a tape running unit. The tape running unit for draws out and drives a tape wound on a first reel and taken up on a second reel. The torque command is modulated by a torque modulator in accordance with a moment of inertia of the first reel, a winding radius of the tape wound on the first reel, a moment of inertia of the second reel and a rotating radius of the second reel, which are detected by a parameter detector. The first motor is responsive to the modulated torque command for rotating the first reel, thereby keeping the tension of the tape constant.
REFERENCES:
patent: 4015799 (1977-04-01), Koski et al.
patent: 4398227 (1983-08-01), Anderson
patent: 4461433 (1984-07-01), Kani
patent: 4525654 (1985-06-01), Tajima et al.
patent: 5039027 (1991-08-01), Yanagihara et al.
patent: 5222684 (1993-06-01), Yoneda et al.
Patent Abstract of Japan, vol. 14, No. 352 (P-1085) 30 Jul. 1990 & JP-A-02 126 455 (Hitachi Ltd) 15 May 1990.
Fujioka Souichirou
Gotoh Yoshiho
Nishida Masafumi
Okamoto Hiroshi
Yamaguchi Osamu
Matsushita Electric - Industrial Co., Ltd.
Nguyen John Q.
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