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:
Mar. 22, 2011
Filed:
Jan. 22, 2008
Applicant:
Erkki Miettinen, Kokemäki, FI;
Inventor:
Erkki Miettinen, Kokemäki, FI;
Assignee:
Abb Oy, Helsinki, FI;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05B 19/29 (2006.01);
U.S. Cl.
CPC ...
Abstract
In a device, such as measuring or control signal transmitter, generating an analog current or voltage output signal, absolute values of output variables are continuously measured and regulated to ensure the correctness of the signal. The actual current or voltage value of an analog output signal is measured and digitized (), a difference (e) between the digitized actual current or voltage value and the desired current or voltage value is defined (), and the generation () of the analog output signal is controlled () by means of a digital control signal (Enable, Direction) so as to decrease the difference.