Sampled data positioning system employing a model of the physica

Details Sampled data positioning system employing a model of the physica Sampled data positioning system employing a model of the physica

1977-12-23

1979-01-02

Eddleman, Alfred H.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

318638, 318653, 318561, G11B 2108, G05B 1300

Patent

active

041330110

ABSTRACT:
A sampled data positioning system for moving a member between positions in a minimum time employs a model of the physical system to overcome the low bandwidth constraints of fed back position and velocity samples. The model system is an approximate analog of the physical system and provides continuous pseudo position and velocity signals of high bandwidth. These are applied to a seek controller which generates an error signal between a desired reference velocity trajectory and the pseudo velocity signal. The error signal is fed back to the model system input and is also applied to control the physical system. The model velocity and position outputs are reset at sampling times to the values of the sampled velocity and position in the physical system.

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patent: 3601588 (1971-08-01), Bristol
patent: 3657534 (1972-04-01), DeClerk et al.
patent: 3758762 (1973-09-01), Littman et al.
patent: 3812533 (1974-05-01), Kimura et al.
patent: 4056830 (1977-11-01), Smith

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