6.4.5 Model based correction of motion deviations in the Planck-Balance
- Event
- 20. GMA/ITG-Fachtagung Sensoren und Messsysteme 2019
2019-06-25 - 2019-06-26
Nürnberg, Germany - Chapter
- 6.4 Messunsicherheit und Modellbildung
- Author(s)
- H. Bai - Tianjin University, Tianjin (China), N. Rogge, T. Fröhlich - Technische Universität Ilmenau (Deutschland), C. Rothleitner - Physikalisch-Technische Bundesanstalt, Braunschweig, (Deutschland)
- Pages
- 554 - 560
- DOI
- 10.5162/sensoren2019/6.4.5
- ISBN
- 978-3-9819376-0-2
- Price
- free
Abstract
The Planck-Balance, a device planned to be used as a direct realization of the definition of the kilogram, utilizes the working principle of a Kibble balance [1]. Therefore, the motion of the coil under test has to be measured precisely. In the Planck-Balance, the coil is guided by the load carrier of a commercially available EMFC load cell. In order to reduce the measurement uncertainty of the velocity measurement, the tilt motions of this load carrier needs to be well known at the specified frequencies. The contribution presents different approaches to model the tilt of the load carrier during its sinusoidal excitation and the correction of tilt induced errors of the measurement.