Servo system

Details Servo system Servo system

1975-07-31

1977-10-18

Dobeck, B.

Electricity: motive power systems

Braking

Automatic and/or with time-delay means

318636, 318345E, H02P 516

Patent

active

040548201

ABSTRACT:
A closed-loop servo system in which the parameter to be controlled is caused to follow a predetermined profile by approaching the profile, if there is an error, at a rate independent of the magnitude of the error. The system repeatedly tests for an error and adjusts a control input by a predetermined step each time one is found. In a preferred implementation the velocity of a d.c. motor is controlled by means of an up/down counter the value of which controls the motor current.

REFERENCES:
patent: 3559018 (1971-01-01), Fournier
patent: 3659169 (1972-04-01), Waddicor
patent: 3737751 (1973-06-01), Lima
patent: 3838325 (1974-09-01), Kobayashi
patent: 3950682 (1976-04-01), Dohanich

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