Title: |
Measurement uncertainty estimation of a novel torque transducer for wind turbine test benches |
| Author(s): |
Jonas Gnauert, Georg Jacobs, Stefan Kock  and Dennis Bosse |
| Year: |
2018 |
| Event name: |
22. IMEKO World Congress |
| Event place: |
Belfast, Northern Ireland |
| Event date: |
03.-06.09.2018 |
| Affiliation: |
Chair for Wind Power Drives, RWTH Aachen University, Campus-Boulevard 61,
52074 Aachen, Germany |
| File URL: |
http://www.imeko2018.org/abstracts/IMEKO18-575.PDF |
| Abstract: |
This paper covers the measurement uncertainty estimation of a novel 5 MN∙m torque
transducer based on the Force-Lever principle for wind turbine test benches. The motivation of
this novel transducer is to provide a satisfying accuracy in torque measurement above
1.1 MNm. Therefore the estimation of the measurement uncertainty is significant to evaluate
the design. At the beginning the design is shortly introduced. Afterwards, the design is
investigated under operational conditions (e.g. torque, gravity, rotational speed and multiaxial
loads) by using FE simulations to determine the deformation and the parasitic loads. Finally,
the measurement uncertainty is determined based on these FE simulations according to the
type B evaluation of the GUM [1], including metrological aspects (e. g. linearity deviation and
hysteresis). Additionally, the share in the measurement uncertainty is examined to indicate
further starting points for improvements of the design. It can be shown that the novel torque
transducer provides a high potential to significantly improve the measurement uncertainty in
the MNm range towards existing torque measurement methods. |
