Hierarchical and incremental multivariate analysis for process control

US8233494B2 · kind B2 · utility

Assignee

• International Business Machines Corporation · US

Inventors

• Lisa Amini · Yorktown Heights, US
• Edward Sumner Begle · Middletown, US
• Brian D. Pfeifer · Red Hook, US
• Deepak S. Turaga · Nanuet, US
• Olivier Verscheure · Hopewell Junction, US
• Justin W. Wong · South Burlington, US
• Gerett Raybourn Yocum · Poughkeepsie, US

Key dates

• Filing date: Jan 22, 2008
• Grant date: Jul 31, 2012
• Expiry date: Aug 7, 2030

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P90/02
• WIPO field: Control
• WIPO sector: Instruments

Abstract

A technique for analyzing two or more data streams respectively generated from two or more components of a controllable process includes the following steps. In a first step, a statistical analysis is performed on each of the two or more data streams to generate first analysis results in the form of respective statistical results for the two or more data streams. In a second step, at least a portion of the statistical results from at least one of the two or more data streams is combined with at least a portion of the statistical results from at least another one of the two or more data streams to yield second analysis results. The controllable process is adjustable based on at least one of the first analysis results and the second analysis results.