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:
Jul. 21, 1992
Filed:
May. 21, 1990
Martin Gulaian, Cleveland Heights, OH (US);
David L Lane, Vienna, VA (US);
Kenneth Loparo, Chesterland, OH (US);
Thomas J Scheib, Chesterland, OH (US);
ELSAG International B.V., Amsterdam, NL;
Abstract
A method of estimating pH titration curves for use in the adaptive control of pH in a process, comprises gathering data points which each represent the ratio between a reagent added to the process and a flowrate to the process at a measured pH, storing the data points in a bin system according to pH, and using the stored data points to create a model of the titration curve for use in controlling the addition of reagent. Older points are replaced by newer points during the process to continuously update the model. The model was used to generate a gain schedule for operating a PI controller that is used in adding a reagent to the process.