Rotary resolver e.g. for input/output voltage phase-shift compensation

摘要

The resolver has a stator (4) and a rotor (2) on which a resolver part (1) and at least one rotor winding (21) are arranged. The resolver part (1) has at least two stator windings (11,12). The rotor winding (21) is supplied by an alternating voltage. In the output circuit the resolver part (1) has capacitors connected in parallel to the inductance of the resolver stator windings (11,12). The capacitors and inductors form LC oscillating loops. The size of the capacitors is such that the resonance frequencies of the LC oscillation loops is in the order of magnitude of the operating frequency of the indicator and thus the phase-shift is reduced with increasing transfer function.