Continuously adaptive seek deceleration profiling
US6590735B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 18, 2000 |
| Grant date | Jul 8, 2003 |
| Priority date | — |
| Expiry date | Jan 18, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/5526
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for adapting a control system governing the swing of an actuator arm to the actual deceleration capacity of an attached servomechanism, comprising: maximally accelerating the actuator arm; measuring the actual acceleration; calculating the ratio between the actual acceleration and nominal acceleration; multiplying an actual distance parameter by the ratio before indexing into a velocity profile to retrieve a target velocity; and multiplying a feedforward signal by the ratio prior to feeding it into a control loop. The apparatus includes a servomechanism that swings the actuator arm; a transducer that produces a signal representing the arm's position; a ROM containing a velocity profile; a microprocessor connected to the transducer and ROM, controlling the velocity of the actuator arm such that it tracks retrieved target velocities by outputting a control signal, and a power amplifier connected to the microprocessor and servomechanism, for receiving the control signal and driving the servomechanism.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.