Process control with guard band and fault limit

Details Process control with guard band and fault limit Process control with guard band and fault limit

1988-03-07

1992-01-28

Lall, Parshotam S.

Boots, shoes, and leggings

364570, 36455101, 340506, 340511, G01D 308, G06F 1520

Patent

active

050848259

ABSTRACT:
A process control system is disclosed in which process variables are treated as mapped in n-dimensional space, where n is the number of orthogonal directions. Three functions, set, check, and term, provide the link between expected and actual conditions. The check and term functions operate on orthogonal coordinates. Each parameter has a guard band to provide a soft boundary for the parameter.

REFERENCES:
patent: 3818205 (1974-06-01), Wehrmann
patent: 4031366 (1977-06-01), Hartung
patent: 4611296 (1986-09-01), Niedermayr
patent: 4683542 (1987-07-01), Taniguti
patent: 4695965 (1987-09-01), Fujita et al.
patent: 4715214 (1987-12-01), Tveter et al.

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