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公开(公告)号：DE68920316D1
公开(公告)日：1995-02-09
申请号：DE68920316
申请日：1989-01-25
Applicant: SYQUEST TECHNOLOGY
Inventor： COUSE ROBERT , MERCER PATRICK
Abstract: A disc drive 22 having a head 26 actuated by an actuator 32 for seeking out a destination track 30 includes servo velocity control circuitry 51 and servo position control circuitry 41. The servo velocity control circuitry 51 seeks out the destination track and places the head within the boundaries of that track while the servo position control circuitry 41 using servo information places the head on the centerline of the destination track. The fine servo control circuitry 20 is provided for communicating the information generated by the servo position control circuitry 41 to the servo velocity circuitry 51 when the head 26 is several tracks from the destination track in order to allow the actuator 32 to smoothly and quickly cause the head to seek within the boundaries of the destination track without overshooting that track.
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公开(公告)号：DE68917718D1
公开(公告)日：1994-09-29
申请号：DE68917718
申请日：1989-01-25
Applicant: SYQUEST TECHNOLOGY
Inventor： COUSE ROBERT , MERCER PATRICK
Abstract: A disc drive 22 having a head 28 actuated by an actuator 27 includes a head loading velocity control for successfully and accurately loading the head 28 onto a disc 26 so as not to cause damage to the head 28 or the disc 26.
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公开(公告)号：DE68920316T2
公开(公告)日：1995-06-01
申请号：DE68920316
申请日：1989-01-25
Applicant: SYQUEST TECHNOLOGY
Inventor： COUSE ROBERT , MERCER PATRICK
Abstract: A disc drive 22 having a head 26 actuated by an actuator 32 for seeking out a destination track 30 includes servo velocity control circuitry 51 and servo position control circuitry 41. The servo velocity control circuitry 51 seeks out the destination track and places the head within the boundaries of that track while the servo position control circuitry 41 using servo information places the head on the centerline of the destination track. The fine servo control circuitry 20 is provided for communicating the information generated by the servo position control circuitry 41 to the servo velocity circuitry 51 when the head 26 is several tracks from the destination track in order to allow the actuator 32 to smoothly and quickly cause the head to seek within the boundaries of the destination track without overshooting that track.
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公开(公告)号：DE68917718T2
公开(公告)日：1995-03-02
申请号：DE68917718
申请日：1989-01-25
Applicant: SYQUEST TECHNOLOGY
Inventor： COUSE ROBERT , MERCER PATRICK
Abstract: A disc drive 22 having a head 28 actuated by an actuator 27 includes a head loading velocity control for successfully and accurately loading the head 28 onto a disc 26 so as not to cause damage to the head 28 or the disc 26.
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