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Tape Tension and DRAG Sensing

IP.com Disclosure Number: IPCOM000047471D
Original Publication Date: 1983-Nov-01
Included in the Prior Art Database: 2005-Feb-07

Publishing Venue

IBM

Related People

Authors:
Winarski, DJ [+details]

Abstract

Pressure sensors are employed at air bearings to detect tape tension and drag. A tape 10 is drawn over air bearings 11 and 12 and head 13 in Fig. 1. A pressure sensor 14 detects tape tension T2 according to the formula T2 = PxRxW, where P is the pressure, R is the air bearing radius, and W is the air bearing width. Tape drag at the head is detected by differential pressure sensor 15 according to the formula DRAG = P(diff)xRxW, derived as shown in Fig. 2.