Method to determine inertia in a shaft system
US9435683B2 · kind B2 · utility
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16Claims
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Key dates
| Filing date | Sep 30, 2015 |
| Grant date | Sep 6, 2016 |
| Priority date | — |
| Expiry date | Sep 30, 2035 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2270/335
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method to determine inertia of components of a rotating shaft system. The shaft system includes a shaft coupling a turbine to drive the rotation and a load to be driven by the rotation. The method includes steps to: apply a feedback to a forcing input to the shaft system; measure resonant frequency of the shaft; iterate steps 1.a) and 1.b) for different feedbacks; plot resonant frequency squared against gain; and determine inverse of gradient from the plot to give inertia of the turbine. Also a method to determine shaft stiffness using the inertia of the turbine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.