Experimental Demonstration of Stray-Field Immunity beyond 5 mT for an Automotive-Grade Rotary Position Sensor

Proceedings

Burssens, Jan-Willem¹  Dupré, Nicolas²  Huber, Samuel³  Dubrulle, Olivier⁴  Schott, Christian⁵ 

[1] Author to whom correspondence should be addressed.;Melexis, 2022 Bevaix, Switzerland;Melexis, 3980 Tessenderlo, Belgium;Melexis, 8900 Ieper, Belgium;Presented at the Eurosensors 2018 Conference, Graz, Austria, 9–12 September 2018

关键词: hall effect;    position sensor;    automotive electronics;   

DOI  :  10.3390/proceedings2130763

学科分类：社会科学、人文和艺术（综合）

来源: mdpi

【 摘 要 】

This paper experimentally demonstrates the stray-field robustness capability of a novel Hall-based rotary position sensor concept (Huber, S., et al, 2018). The sensor targets safety-related automotive applications, for example powertrain and power steering. In these applications, the safety requirement specifies a maximum stray-field induced error of 0.4°. Therefore, the robustness in corner cases needs to be assessed. We demonstrate the stray-field immunity in multiple corner cases for temperature from −40 °C up to 160 °C and over lifetime. The impact of a uniform 5 mT stray field over all conditions (3σ) is shown to be less than 0.25°. The fully-integrated automotive-qualified sensor is implemented in a 0.18-μm CMOS technology, and achieves 0.7° of angular accuracy.

【 授权许可】

CC BY