Programmable Angular System with Online Diagnosis (Programmierbares Winkelmesssystem mit Online-Diagnose)
Adrian Harmansa, Stefan Butzmann · tm - Technisches Messen · 2005
Abstract A programmable angular measurement system with online diagnosis is presented. The actual measurement principle is based on the anisotropic magnetoresistive effect. The sensing element provides a sine- and a cosine-signal related to the applied magnetic field angle. The signal conditioning algorithm calculates the magnetic field angle from these signals by using the CORDIC algorithm. Additionally, a variety of diagnosis features are implemented in order to ensure a fail-safe operation of the device. The sensor is thus particularly suited for applications under harsh environmental conditions as found in automobiles.