ROTATION ANGLE MEASURING DEVICE WITH MAGNETISED COMMUTATOR

摘要

The invention relates to a rotation angle measuring device for an electrical machine. To provide a simple and compact measuring device of this kind, the invention provides for the commutator of the machine to be magnetized and for the magnetic field which rotates with the commutator to be evaluated by means of a suitable sensor. Advantageous improvements relate to a suitable structure for the commutator.