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.

Date of Patent:
Jan. 14, 2020

Filed:

Jul. 14, 2016
Applicant:

Honeywell International Inc., Morris Plains, NJ (US);

Inventors:

Sachindra K. Dash, Scottsdale, AZ (US);

Konstantinos Tsakalis, Chandler, AZ (US);

J. Ward MacArthur, Scottsdale, AZ (US);

Assignee:

Honeywell International Inc., Morris Plains, NJ (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05B 13/02 (2006.01); C02F 1/66 (2006.01); G05B 13/04 (2006.01);
U.S. Cl.
CPC ...
G05B 13/024 (2013.01); C02F 1/66 (2013.01); G05B 13/042 (2013.01); C02F 2209/06 (2013.01);
Abstract

This disclosure provides adaptive control techniques for pH control or control of other industrial processes. For example, in one method, a robust stability condition (RSC) value is determined during operation of a process controller, and a characteristic of the process controller is adaptively modified based on the RSC value. The RSC value provides an estimate of performance of the process controller in controlling the industrial process. In another method, one of multiple process controllers is selected based on RSC values associated with the process controllers, and one or more control signals are output from the selected process controller to an industrial process in order to control the industrial process. The RSC values provide estimates of performances of the multiple process controllers in controlling the industrial process.


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