Control device, disk device, and seek orbit generation method

Details Control device, disk device, and seek orbit generation method Control device, disk device, and seek orbit generation method

2008-07-01

2008-07-01

Sniezek, Andrew L. (Department: 2627)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

C360S078060, C360S078040, C360S077020

Reexamination Certificate

active

11477091

ABSTRACT:
A waveform generator generates an acceleration orbit, a velocity orbit, and a position orbit from the seek time. Each orbits multiplied by respective gains, whereupon the orbits are synthesized by a first adder. The resulting composite orbit is multiplied by a seek distance and then passed through a FIR filter to obtain the target position orbit that is to be applied to the later-stage two-degree-of-freedom control system. The two-degree-of-freedom control system has a characteristic whereby it is able to approximate a second-order low-pass filter.

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Eiji Okamura; DSP Technology in Hard Disk Drives; pp. 38-45; Electronics; Nov. 1996.

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