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. 19, 1997
Filed:
Jun. 26, 1996
Kenneth G Vickers, Whitesboro, TX (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
A multiple model supervisor control system (24) for use in a manufacturing environment (10) including a plurality of model based statistical process control units (14.sub.1 -14.sub.N) associated with equipment (#1-#N) is provided. The multiple model supervisor control system (24) includes a database (16) storing model coefficient shift data representing statistically significant drifts in output measurables that are associated with the model based statistical process control units (14.sub.1 -14.sub.N). A supervisor control unit (26) is coupled to the database (16) and is operable to access the coefficient shift data stored in the database (16). A multiple model map (30) of coefficient shift history is generated by the supervisor control unit (26) and shows the coefficient shift data against a common domain. A user interface (28) is coupled to the supervisor control unit (26) to provide user access to the multiple model map (30) to allow identification of problems caused by equipment drift and problems caused by environmental change.