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:
Nov. 24, 2015
Filed:
Nov. 09, 2012
Azbil Corporation, Tokyo, JP;
Toru Kashima, Tokyo, JP;
AZBIL CORPORATION, Chiyoda-Ku, Tokyo, JP;
Abstract
A first state quantity and a second state quantity of a valve stem dislocation are calculated, and a ratio of the first state quantity and the second state quantity is calculated as a first stick-slip indicator SSpv in a first stick-slip indicator calculating portion. A third state quantity and a fourth state quantity of a control instruction value of a valve stem dislocation are calculated, and a ratio of the third state quantity and the fourth state quantity is calculated as a second stick-slip indicator SSsp in a second stick-slip indicator calculating portion. With a threshold value as Th, a first constant as α, and a second constant as β, a fault evaluating portion concludes that a stick-slip has occurred when the conditional expression 'SSpv>Th AND SSpv>α·SSsp+β' is satisfied.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile