Phase detection apparatus and method
US5347857A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 1, 1992 |
| Grant date | Sep 20, 1994 |
| Priority date | — |
| Expiry date | Jun 1, 2012 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D2200/1015
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Machine assemblies often include driving and driven members such an engine associated with a driven load. These members typically include rotatable shafts (16, 18) interconnected by a flexible coupling element (20). System torsionals in such a machine often cause the shafts (16, 18) to be out of phase with one another. When this occurs, excessive energy is transferred to the coupling element (20). The subject apparatus (22) includes a device (24) for detecting and measuring rotational phase differences between driving and driven rotatable shafts (16, 18). The measured phase differences are compared with a reference phase difference level and an error signal is produced in response to the measured phase difference exceeding the reference level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.