Method and apparatus for controlling one or several variables de

Details Method and apparatus for controlling one or several variables de Method and apparatus for controlling one or several variables de

1977-08-15

1979-04-24

Gruber, Felix D.

Boots, shoes, and leggings

241 33, 364105, 364469, 364502, G05B 1302, G05B 1702

Patent

active

041515889

ABSTRACT:
In order to control a variable of a control system depending on a plurality of control inputs to minimize an error function, one control input at a time is, at regular intervals, varied step by step in the same direction until the sign of the differential quotient with respect to time of the absolute value of the error between a predetermined desired value and the actual value of the variable has changed from minus to plus, whereupon the same control input is varied in steps in the opposite direction, with the remaining control inputs varied in the same manner cyclically and sequentially after a respective predetermined number of such sign reversals.

REFERENCES:
patent: 3480765 (1969-11-01), Rouxel et al.
patent: 3880348 (1975-04-01), Salihbegovic et al.
patent: 3920965 (1975-11-01), Sohrwardy
patent: 3996452 (1976-12-01), Schulze et al.

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