Browse Prior Art Database

Feedback Controlled Carriage Drive

IP.com Disclosure Number: IPCOM000093558D
Original Publication Date: 1967-Nov-01
Included in the Prior Art Database: 2005-Mar-06
Document File: 2 page(s) / 40K

Publishing Venue

IBM

Related People

Kozol, ET: AUTHOR

Abstract

Control of a stepping motor driving a carriage is effected by connecting motor windings 10a, 10b, 10c, and 10d through drivers A, A, B, and B to the corresponding terminals of triggers TA and TB. The latter are driven through 0r 12 from carriage go latch 14 and a 288-tooth motor emitter 16 through And 18. Stop pulses are applied to 0r 12 from the off output of latch 14 and stop control circuits 20 and 22. Checking is provided for both 6 end 8 lines per inch by a 72-tooth motor emitter 26 which drives a three-stage counter 28 with triggers for the 1, 2, and 4 bits. Decode 3 and decode 4 signals obtained from counter 28 through And's are Anded with the inversions of decode 10 and decode 14 signals.

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Feedback Controlled Carriage Drive

Control of a stepping motor driving a carriage is effected by connecting motor windings 10a, 10b, 10c, and 10d through drivers A, A, B, and B to the corresponding terminals of triggers TA and TB. The latter are driven through 0r 12 from carriage go latch 14 and a 288-tooth motor emitter 16 through And 18. Stop pulses are applied to 0r 12 from the off output of latch 14 and stop control circuits 20 and 22. Checking is provided for both 6 end 8 lines per inch by a 72- tooth motor emitter 26 which drives a three-stage counter 28 with triggers for the 1, 2, and 4 bits. Decode 3 and decode 4 signals obtained from counter 28 through And's are Anded with the inversions of decode 10 and decode 14 signals. The latter are obtained from five-stage binary counter 29 driven by latch 14 and emitter 16 from Or 12 to turn on error latch 30 in the case of an overshoot in stopping.

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