Bringing automation to electromagnetic by robotic scanning of magnetic field in electric drives

Abstract

Accurate magnetic field measurement is vital for analysing and optimizing electric
machines such as permanent magnet synchronous motors. Existing methods struggle with
complex geometries, enclosed structures, and multi-axis field variations.We propose a robotic
arm-based system for automated, high-resolution scanning of all three magnetic field components
across the full motor geometry, including stator and rotor. The system enables precise
sensor positioning on curved surfaces for reliable data acquisition where traditional setups
fail. Comprehensive spatial analysis, including harmonic decomposition, reveals hidden
field patterns that support improved diagnostics and motor design. This flexible, scalable
approach advances both experimental research and industrial evaluation of electric machines.