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. 13, 1990
Filed:
Oct. 04, 1989
Applicant:
Inventors:
Assignee:
Lenze GmbH & Co KG Aerzen, Aerzen, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05B / ; G01B / ; G01P / ;
U.S. Cl.
CPC ...
318654 ; 318603 ; 318608 ; 318660 ;
Abstract
Angular position and rotation rate of a function generator having stator windings and rotor windings are determined by first amplitude modulating a carrier oscillation to form a sine signal and a cosine signal and then feeding the sine signal and cosine signals to opposite stator windings and thereby inducing in the rotor winding an analog function-generator signal. In turn this analog function-generator signal is converted into a digital function-generator signal from which is derived by means of an algorithm a digital rotation-rate signal which is numerically integrated to obtain an angular-position signal. This angular-position signal is itself used to modulate the carrier oscillation.