P4.4 Estimate the error of offset issue and amplitude mismatch of Atan2 function
- Event
- SMSI 2020
-
(did not take place because of Covid-19 virus pandemic) - Band
- SMSI 2020 - Measurement Science
- Chapter
- P4 Measurement Uncertainty and Mathematical Strategies
- Author(s)
- J. Zhou, M. Dietrich, P. Walden - Schaeffler Automotive Buehl GmbH & Co. KG, Bühl (Germany), J. Kolb - Schaeffler Technologies AG & Co. KG, Karlsruhe (Germany), M. Doppelbauer - Karlsruhe Institute of Technology, Karlsruhe (Germany)
- Pages
- 345 - 346
- DOI
- 10.5162/SMSI2020/P4.4
- ISBN
- 978-3-9819376-2-6
- Price
- free
Abstract
Atan2 function is widely used in most angular sensor nowadays. In order to increase the sensor accu-racy, system errors must be compensated before the atan2 calculation. The offset issue and ampli-tude mismatch are two of the most significant system errors. Until today, different approximation methods are being used to estimate the maximum effects of them. However, these methods are not fully satisfying, especially in terms of high offset issue or angular mismatch, as mentioned. In this pa-per, a new method with Lissajous-figure is introduced to calculate this impact of those errors analyti-cally and to provide an accurate solution, which can compensate the errors completely.