6.4.4 Investigations on the sine fitting algorithm 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)
- S. Lin, C. Rothleitner - Physikalisch-Technische Bundesanstalt, Braunschweig (Deutschland), N. Rogge - Technische Universität Ilmenau (Deutschland)
- Pages
- 547 - 553
- DOI
- 10.5162/sensoren2019/6.4.4
- ISBN
- 978-3-9819376-0-2
- Price
- free
Abstract
The Planck-Balance is a table-top version of a Kibble balance. In contrast to many other Kibble balances, the Planck-Balance generates an ac (sinusoidal) rather than a dc signal in the dynamic mode. A linear sine fitting algorithm is applied to estimate the amplitudes of the induced voltage and the coil motion, which determine the force factor Bl of the voice coil of the electromagnetic force compensated balance. Different sine fitting algorithms are compared in terms of harmonic distortion, additive Gaussian noise and non-coherent sampling. The biases and uncertainties associated with the estimated Bl are also compared by numerical simulations.