Phase lock loop based system and method for decomposing and tracking decomposed frequency components of a signal, with application to vibration compensation system
US5710720A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 1, 1996 |
| Grant date | Jan 20, 1998 |
| Priority date | — |
| Expiry date | Aug 1, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03L7/07
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.