Vibration suppression for servo control

Details Vibration suppression for servo control Vibration suppression for servo control

2007-09-11

2007-09-11

Wellington, Andrea (Department: 2627)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

C360S077060, C360S078040

Reexamination Certificate

active

10956972

ABSTRACT:
Embodiments of the present invention provide a way to modify the controller of a HDD head actuator to increase the error rejection capability and suppress the wideband vibration that affects the head motion. In one embodiment, a system to suppress influence of an external disturbance to an actuator comprises a controller providing a controller output as an actuator input to drive an actuator; a feedback loop to feed a head signal at an output of the actuator back as an input to the controller to produce an error signal; and a plurality of peak filters coupled to the controller and having different peak frequencies. Each peak filter has a peak filter input including the error signal, and has a peak filter output. A supervisor module is coupled with the peak filters to selectively add or delete the peak filter output of each peak filter to the actuator input to drive the actuator.

REFERENCES:
patent: 6377418 (2002-04-01), Kagami et al.
patent: 6487028 (2002-11-01), Sri-Jayantha et al.
patent: 6532129 (2003-03-01), Sri-Jayantha et al.
patent: 6594106 (2003-07-01), Serrano et al.
patent: 2002/0034036 (2002-03-01), Sri-Jayantha et al.
patent: 2003/0067708 (2003-04-01), Ozawa
patent: 2004/0004782 (2004-01-01), Masashi
patent: 2004/0090698 (2004-05-01), Dang et al.

Affiliated with

Also associated with

Rating

Vibration suppression for servo control does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Vibration suppression for servo control, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Vibration suppression for servo control will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3769904