Feedforward compensation for multi-actuator hard drives
US9911442B1 · kind B1 · utility
36Cited by
57References
20Claims
0Family size
Assignee
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Key dates
| Filing date | Nov 23, 2016 |
| Grant date | Mar 6, 2018 |
| Priority date | — |
| Expiry date | Nov 23, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/5582
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An apparatus includes a first controller, a second controller, and a coupling compensator. The first controller is configured to generate a first voice coil motor (VCM) control signal in response to a first position error signal. The second controller is configured to generate a second VCM control signal in response to a second position error signal. The coupling compensator is configured to generate a first feedforward correction signal in response to the first VCM control signal. The first feedforward correction signal modifies the second VCM control signal to generate a modified second VCM control signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.