Servo system for positioning and driving a movable member using

Details Servo system for positioning and driving a movable member using Servo system for positioning and driving a movable member using

1985-12-11

1987-04-21

Cardillo, Raymond F.

Electricity: motive power systems

Positional servo systems

With stabilizing features

369 32, 369 33, 369 41, 369 44, 360 77, 360 78, 318607, G05B 501, G11B 2108, G11B 2110

Patent

active

046599720

ABSTRACT:
This invention relates to a servo system for positioning and driving a movable member such as a pickup head of an optical reading system, for example. A sinewave signal is generated by a position detector in response to movement of the movable member. A first reference signal is used with the sinewave signal to position the movable member. A second reference signal is used with a modified signal which is generated by differentiating and rectifying the sinewave signal, to drive the movable member.

REFERENCES:
patent: 4355273 (1982-10-01), DuVall
patent: 4386300 (1983-05-01), Ogawa
patent: 4397009 (1983-08-01), Eriksson

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