DocumentCode
981405
Title
Microprocessor controlled tape motion
Author
Van Pelt, Richard W.
Author_Institution
Storage Technology Croporation, Louisville, Colorado
Volume
17
Issue
4
fYear
1981
fDate
7/1/1981 12:00:00 AM
Firstpage
1435
Lastpage
1437
Abstract
The capstan control system of a high performance digital tape drive starts and stops tape with accelerations of about 500 g\´s. A microprocessor based control system is now being implemented on STC\´s 4500 Tape Systems to attain accurate tape speed control with little high frequency variation. Improvements made possible by the processor include controlling rate of change of motor current and drastically reducing start current when a "GO" command is received during a decelerate operation to avoid exciting a torsional resonance. Other improvements are mode-controlled digital error integration for long term accuracy and stop-lock stability enhancement by digital-gain switching.
Keywords
Magnetic tape recording; Motor drives; ANSI standards; Acceleration; Control systems; Costs; Frequency; Logic; Magnetic resonance; Microprocessors; Motion control; Process control;
fLanguage
English
Journal_Title
Magnetics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9464
Type
jour
DOI
10.1109/TMAG.1981.1061223
Filename
1061223
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