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:
Sep. 05, 2006
Filed:
Aug. 13, 2001
Joachim Ebermann, Amtsberg, DE;
Kay Grammatke, Pleiba, DE;
Horst Stiehler, Burgstaedt, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
The invention relates to a method for process-variable-dependent identification signal emission for a closed-loop and/or open-loop control program with cyclic sampling of process variables from a technical process. A threshold value crossing time (ts, ts) is determined from at least two previous samples (AT, AT, AT-AT) of a process variable (P). At this time, an identification signal can be triggered, which can call up a single-stage or multi-stage command sequence. The threshold value crossing time (ts-ts) can likewise be determined with the aid of a mathematical approximation function and the samples (AT, AT, AT-AT). A timing mechanism can be started in the predicted sampling cycle (Ato A) preceding the threshold value crossing (SD-SD) using a time difference (ZD-ZD) remaining until the threshold value crossing (SD-SD). The threshold value crossing time (ts-ts) is determined once again using a further, subsequent sample (AT, AT, AT-AT) and the approximation function, and the remaining time difference (ZD-ZD) of the timing mechanism is adapted once again if necessary.