Invention Grant
- Patent Title: Split actuator drive that limits slew rate of aggressor VCM to reduce victim disturbances
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Application No.: US18190495Application Date: 2023-03-27
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Publication No.: US12148456B2Publication Date: 2024-11-19
- Inventor: Siri S. Weerasooriya , Richard M. Ehrlich , Thorsten Schmidt
- Applicant: KABUSHIKI KAISHA TOSHIBA , TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATION
- Applicant Address: JP Tokyo; JP Tokyo
- Assignee: KABUSHIKI KAISHA TOSHIBA,TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATION
- Current Assignee: KABUSHIKI KAISHA TOSHIBA,TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATION
- Current Assignee Address: JP Tokyo; JP Tokyo
- Agency: Kim & Stewart LLP
- Main IPC: G11B5/55
- IPC: G11B5/55 ; G11B15/473

Abstract:
A seek operation of a first actuator in a multi-actuator drive is modified, so that one or more disturbance-generating portions of the seek operation do not adversely affect operation of a second actuator in the drive. Radial motion of the aggressor actuator is controlled by limiting a slew rate of the first actuator during one or more portions of the seek operation to be less than or equal to a threshold value. Because slew rate of the first actuator is the rate of change of radial acceleration of the aggressor actuator with respect to time, limiting the slew rate of the first actuator prevents or reduces mechanical disturbances caused by jerk associated with motion of the first actuator.
Public/Granted literature
- US20230238024A1 SPLIT ACTUATOR DRIVE THAT LIMITS SLEW RATE OF AGGRESSOR VCM TO REDUCE VICTIM DISTURBANCES Public/Granted day:2023-07-27
Information query
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