Tape transport system including a logical network for producing

Details Tape transport system including a logical network for producing Tape transport system including a logical network for producing

1974-03-29

1976-02-17

Christian, Leonard D.

Winding, tensioning, or guiding

Strand tensioning device

Tortuous course

318 6, B65H 5938, G03B 104, G11B 1532

Patent

active

039387577

ABSTRACT:
A constant speed reel-to-reel tape transport system is described including a drive motor having a pair of quadrature windings, and a motor supply producing a pair of square-wave motor-drive pulse trains of the same repetition rate, but 90.degree. out of phase, one train being supplied to each of the quadrature windings. The system further includes control means responsive to the change in the effective radius of one of the reels, for example the drive reel, for varying the repetition rate of the pulse trains, and thereby the speed of the motor, to maintain a constant linear tape speed.

REFERENCES:
patent: 3297266 (1967-01-01), Rumple
patent: 3373332 (1968-03-01), Olsen
patent: 3764087 (1973-10-01), Paananen et al.

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