Digital servo system

Details Digital servo system Digital servo system

1979-11-07

1982-02-09

Dobeck, B.

Electricity: motive power systems

Positional servo systems

Multiple mode systems

318601, G05B 1118

Patent

active

043151981

ABSTRACT:
A digital servo system adapted for use in a dual mode coarse-fine servo system to control a movable member from a starting position to an at rest destination position. The digital servo generates a pulse train in response to varying space phase cyclic analog position signal A from an encoder coupled to the movable member. Each cycle of an analog position signal represents a small incremental amount of movement by the movable member. The pulse train provides a change in its state in time with the varying position signals. In the preferred embodiment, eight changes occur per cycle. The pulse train is integrated to provide a velocity signal which is compared with a command velocity signal.

REFERENCES:
patent: 4006394 (1977-02-01), Cuda et al.
patent: 4064444 (1977-12-01), Hoang
patent: 4119958 (1978-10-01), Simon et al.
patent: 4184108 (1980-01-01), Sordello et al.
patent: 4207504 (1980-06-01), Kawada et al.

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