Positioning control apparatus

Details Positioning control apparatus Positioning control apparatus

1991-05-30

1994-04-19

Sikes, William L.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

318560, 318561, 360 7702, 360 7705, G11B 2102, G05D 23275

Patent

active

053051580

ABSTRACT:
A positioning control apparatus comprises a feedback compensatory system and a feedforward compensatory system. The feedforward compensatory system comprises a detector for detecting a position of a controlled object whose position is to be controlled, and a compensator connected to the detector. The feedforward compensatory system comprises a first filter having a characteristics reverse to that of the feedback compensatory system, and a second filter having a characteristics reverse to that of the object. A desired drive signal generator supplies the feedforward compensatory system with a desired drive signal having a frequency spectrum having a minimum at the mechanical resonance frequency of the object.

REFERENCES:
patent: 4742285 (1988-05-01), Sasaki et al.
patent: 4796112 (1989-01-01), Mizukami
patent: 4833551 (1989-05-01), Song
patent: 4940924 (1991-07-01), Mizuno et al.
patent: 4947093 (1990-08-01), Dunstan et al.

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