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:
Jan. 20, 1998
Filed:
Aug. 01, 1996
Marcelo C Algrain, Lincoln, NE (US);
Steven L Hardt, Lincoln, NE (US);
Douglas E Ehlers, Lincoln, NE (US);
Board of Regents of the University of Nebraska, Lincoln, NE (US);
Abstract
Disclosed is a system for decomposing an original signal of arbitrary frequency content into a user determined plurality of signals, each of which signals is centered about a variable center frequency. The system of the present invention utilizes a Bank of a plurality of combination Phase Lock Loop and associated Band Pass Filter Bank Components, the Center Frequency of a Frequency Pass Band of each of said Band Pass Filters being effected by use of a signal input thereto, and output by, an associated Phase Lock Loop. The present invention system is particularly well suited for application in the compensation of vibrations in a physical system as sensed by sensors located therein to sense feed-forward and/or feed-back vibration signals. The use of 'Look-up' tables which provide magnitude and phase modification specifications for use in modifying vibration compensating actuator applied signal frequency and phase in feed-forward and in feed-back vibration compensation systems is disclosed as is the use of both feed-forward and feed-back signals in an automated vibration compensation system.