Method and apparatus for programming and reducing runout in rotating shaft vibration signal detection
US4135244A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 20, 1977 |
| Grant date | Jan 16, 1979 |
| Priority date | — |
| Expiry date | Jul 20, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M1/22
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Method and circuit for detecting the slow roll electrical runout signal of a rotating shaft, as synchronized with a tachometer signal, and impressing this signal waveform in digital form in a memory in an encoding section, and subsequently transferring the digital runout information to a programmed read only memory module, and then using the PROM module in a method and circuit for subtracting electrical runout signals from the composite electrical runout signal and vibration signal generated in a proximity probe circuit by the shaft rotating at operational speed, and monitoring and controlling the encode section to provide low frequency detection lock out circuits and to provide digital readout of the instantaneous mils peak of the composite signal outputs of the subtract runout signal, composite signal and corrected signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.