Device for controlling an electronically-commutated motor comprising angularly distributed singularities

摘要

The electronic drive unit has a coder (2) with principal multipolar tracks (2a) and a top track (2b) having a number of sectors (2c) with a number of singularities (2b1). The angular difference between each singularity is different. The top turn together with signal levels defines the sequence of the angle of the coder providing angular position.