The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 24, 1993
Filed:
Dec. 12, 1990
Applicant:
Inventors:
Paul C Badavas, Southboro, MA (US);
Nicolaas E Hemkes, Soest, NL;
Nicholas P DiVittorio, Attleboro, MA (US);
Assignee:
The Foxboro Company, Foxboro, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ; G05B / ;
U.S. Cl.
CPC ...
364154 ; 364148 ;
Abstract
An improved setpoint control system is disclosed for use in conjunction with process control equipment. The system generates signals representing a statistical characteristic of batches, or subgroups, of monitored values of a controlled variable. From these statistical characteristic signals, the system generates an optimum setpoint signal as a sum of a specification limit and a scaled value of the standard deviation of averages of each of a plurality of batches controlled variable values.