State monitoring system of gear device and state monitoring method
US10883896B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 28, 2018 |
| Grant date | Jan 5, 2021 |
| Priority date | — |
| Expiry date | Apr 7, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/72
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A state monitoring system for monitoring state of a gear device having a plurality of gear pairs has a meshing frequency determination device. The meshing frequency determination device includes a maximum-peak-amplitude calculation unit that calculates a maximum peak amplitude from a detected meshing vibration, in estimated frequency ranges and a set harmonic region, and selects such estimated frequencies that a difference in maximum peak amplitude between a plurality of estimated frequency ranges, is less than or equal to a predetermined multiple, and a meshing frequency determination unit that determines an estimated frequency having a total value of maximum peak amplitudes calculated in the plurality of estimated frequency ranges, within a predetermined time, being the k-th (k is a natural number) greatest among the selected estimated frequencies, as a meshing frequency of a gear pair having the k-th highest tooth surface speed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.