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:
Jan. 08, 2019
Filed:
Feb. 11, 2016
Siemens Aktiengesellschaft, Munich, DE;
Patrick Heiler, Waghaeusel, DE;
Bernd-Markus Pfeiffer, Woerth, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
A diagnostic device and method for monitoring operation of automation system control loops includes an evaluation device and a data memory storing sequences of actual-value data of the control loops. An absolute value maximum of a cross-correlation function, for an excitation resulting from changes in a setpoint setting of one control loop, is determined as a first quantitative measure for positive time lag of the sequence of actual-value data of another control loop, and a numeric parameter evaluating an interaction effect of the one control loop on the other is determined as a function of the first quantitative measure. Strength and direction of the interaction effect are displayed. The calculations are repeated for all pairs of monitored control loops and a matrix of the numeric parameters is displayed.