公开(公告)号：GB2518570B

公开(公告)日：2017-07-19

申请号：GB201500987

申请日：2013-06-21

Applicant: IBM

Inventor： NHAN X BUI ,  KEVIN B JUDD ,  TOMOKO TAKETOMI

IPC: G11B15/04

公开(公告)号：GB2578076B

公开(公告)日：2021-05-26

申请号：GB202000832

申请日：2018-06-20

Applicant: IBM

Inventor： ANGELIKI PANTAZI ,  GIOVANNI CHERUBIN ,  TOMOKO TAKETOMI ,  NHAN XUAN BUI ,  MARK ALFRED LANTZ

IPC: G11B15/43 ,  G11B15/32 ,  G11B15/46

Abstract: Embodiments of the present invention provide a tape transport control system with enhanced regulation of tape tension and velocity over the entire length of the tape. The tape transport control system comprises of circuitry adapted to output and circuitry adapted to receive one or more signals representing a tape velocity, at least one radius of either the first tape reel or the second tape reel, and a tape tension, and based on the received signals, generate at least one control signal to control at least one of the first reel motor or the second reel motor so as to reduce a tension disturbance at a minimum, one frequency corresponding to a time-varying reel-rotation frequency, based on controller parameters that depend on the tape velocity and on the at least one radius of either the first tape reel or the second tape reel.

公开(公告)号：GB2578076A

公开(公告)日：2020-04-15

申请号：GB202000832

申请日：2018-06-20

Applicant: IBM

Inventor： ANGELIKI PANTAZI ,  GIOVANNI CHERUBIN ,  TOMOKO TAKETOMI ,  NHAN XUAN BUI ,  MARK ALFRED LANTZ

IPC: G11B15/43 ,  G11B15/32 ,  G11B15/46

Abstract: Embodiments of the present invention provide a tape transport control system with enhanced regulation of tape tension and velocity over the entire length of the tape. The tape transport control system comprises of circuitry adapted to output and circuitry adapted to receive one or more signals representing a tape velocity, at least one radius of either the first tape reel or the second tape reel, and a tape tension, and based on the received signals, generate at least one control signal to control at least one of the first reel motor or the second reel motor so as to reduce a tension disturbance at a minimum, one frequency corresponding to a time-varying reel-rotation frequency, based on controller parameters that depend on the tape velocity and on the at least one radius of either the first tape reel or the second tape reel.