Magnetoelectronic angle sensor, in particular a reluctance resolver

• Main Authors: VERSTRAETE JURGEN, OCKET TOM, VAN CAUWENBERGE JAN
• Format: Patent
• Language: English
• Published: 06.01.2015
• Subjects: ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS; BASIC ELECTRIC ELEMENTS; ELECTRICITY; INDUCTANCES; MAGNETS; MEASURING; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS; MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS; MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR; PHYSICS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES; TARIFF METERING APPARATUS; TESTING; TRANSFORMERS

The present invention relates to a reluctance resolver (100) with an at least partially soft magnetic stator (104) and an at least partially soft magnetic rotor (102) which oppose each other by forming an air gap. The magnetic resistance in the air gap changes periodically on account of a configuration of the rotor that varies over the circumference. The angle sensor has a magnetic flux transmitter which is arranged on the stator and generates a predefined magnetic flux distribution in the air gap via at least one pair of poles. Furthermore, a magnetic flux receiver, which measures the intensity of the magnetic field via at least two pairs of signal poles arranged offset from one another at an angle, is arranged on the stator, wherein an angle value for a position of the rotor in relation to the stator can be derived from the two receiver signals. According to the invention, the stator (104) has distributed over the circumference a large number of teeth (110) which are separated from one another by grooves, and the magnetic flux transmitter comprises at least two primary windings which are arranged in such a way that at least one of the teeth carries no primary windings.