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:
Dec. 17, 2002
Filed:
Aug. 20, 2001
Applicant:
Inventors:
Karl-Heinz Kirchberg, Karlsruhe, DE;
Dieter Mohr, Gondelsheim, DE;
Assignee:
Siemens Aktiengesellschaft, Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05B 1/142 ;
U.S. Cl.
CPC ...
G05B 1/142 ;
Abstract
The present a step controller includes a switching circuit having at least two outputting states, especially a three-level switch (DPS ) with negative feedback, and a PI or PID controller having an integrator (I ). The integrator is inactive during the positioning pulse of the three-level switch. The integrator (I ) is provided with a correcting element (CORR) which reduces the reset time (Tn) for a large input signal (xd). In this way, linear behavior of the step controller can be attained over the entire positioning range of a positioning element.