Tension transients suppression during acceleration and/or deceleration for storage tape drive

Abstract

In one embodiment, a system includes a controller configured to: determine a reference velocity at various intervals, receive or determine a secondary velocity based at least in part on a parameter associated with a drive mechanism motor, determine a value representative of a difference between the reference velocity and secondary velocity, adjust a speed of the motor of the drive mechanism for minimizing the difference between the reference velocity and secondary velocity, receive / determine a primary velocity based on reading information encoded on a magnetic tape, at a switching point, make the reference velocity about equal to the primary velocity, after the switching point, determine the reference velocity at various intervals, after the switching point, determine a value representative of a difference between the reference velocity and primary velocity, and adjust the speed of the motor of the drive mechanism for minimizing the difference between the reference velocity and primary velocity.

Description

BACKGROUND[0001]The present invention relates to data storage systems, and more particularly, this invention relates to a system, method and computer program product for suppressing tension transients during acceleration and deceleration.[0002]In magnetic storage systems, data is read from and written onto magnetic recording media utilizing magnetic transducers. Data is written on the magnetic recording media by moving a magnetic recording transducer to a position over the media where the data is to be stored. The magnetic recording transducer then generates a magnetic field, which encodes the data into the magnetic media. Data is read from the media by similarly positioning the magnetic read transducer and then sensing the magnetic field of the magnetic media. Read and write operations may be independently synchronized with the movement of the media to ensure that the data can be read from and written to the desired location on the media.[0003]An important and continuing goal in th...

AI Technical Summary

Benefits of technology

The system and method described in this patent text involve a system that controls the speed of a motor in a drive mechanism for a magnetic tape. The system uses a controller to determine a reference velocity for the tape, based on information from the motor. The controller then adjusts the speed of the motor to minimize any differences between the reference velocity and the actual speed of the tape. This ensures precise control of the tape's speed during reading and writing of information.

Problems solved by technology

However, the development of small footprint, higher performance tape drive systems has created various problems in the design of a tape head assembly for use in such systems.

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