Estimating the Angular Error of Magnetic Positions Sensors Under the Influence of External Stray Fields

Abstract

The knowledge of the positions and movement of mechanical components is important for many industrial and commercial applications. For example, the contactless measurement of angular positions is regularly done using a magnetic field. Unfortunately, those sensing principles are often prone to measurement errors due to interfering magnetic fields, which is problematic especially in the light of the further developments of electromechanical applications that rely on precise measurement results. On this account the following work presents a numerical approximation of the measurement error, which can help to improve the design of angular sensing systems.