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:
Jun. 07, 2005
Filed:
Apr. 29, 2003
H. Eric Sonnichsen, Stow, MA (US);
Borislav Milatovic, Hudson, MA (US);
H. Eric Sonnichsen, Stow, MA (US);
Borislav Milatovic, Hudson, MA (US);
Test Devices, Inc., Hudson, MA (US);
Abstract
A method and related system for measuring rotor unbalance comprises rotating a rotor about an axis at a range of rotating speeds; generating a reference signal indicative of the instantaneous rotational frequency of the rotor; detecting the vibration of the rotor while the rotator is rotating, and generating a vibration signal; filtering the vibration signal, using the reference signal, to provide a synchronous vibration signal having a frequency equal to the instantaneous rotational frequency of the rotor; recording a vibration vector, the vibration vector comprising amplitude and phase values for the synchronous vibration signal; and measuring rotor unbalance based upon the vibration vector. Measurement accuracy can be improved by recording vibration vectors for a plurality of rotations of the rotor, and determining an average vibration vector. Methods and systems for detecting a rotor anomaly are also disclosed.