Method and apparatus for diagnosing the state of a machine
US5251151A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 24, 1990 |
| Grant date | Oct 5, 1993 |
| Priority date | — |
| Expiry date | Dec 24, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01H1/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus for diagnosing the mechanical condition of a machine. The method of the invention includes the following steps: sensing a reference vibrational signal of the machine; creating a reference set of events from the reference vibrational signal of the machine; saving the reference set of events; sensing a test vibrational signal of the machine; creating a test set of events from the test vibrational signal of the machine; and, comparing the test set of events with the reference set of events to determine the mechanical condition of the machine. The invention further includes a method of extracting a set of events from a vibrational signal of a machine wherein a subset of the events corresponds to a physical action of the machine. The invention also includes a method of determining a set of clustered events for a machine from a plurality of sets of events, wherein each of the sets has a number of events therein. An apparatus is also disclosed for implementing the method of the invention
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.