Importance

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Abstract

A method for operating a resolver, the resolver comprising at least one stator winding and at least one rotor winding which is rotatable with respect to said at least one stator winding and inductively coupled thereto, a monitoring phase of the method comprising: a) exciting the rotor winding with an alternating current, b) deriving a first sampling voltage value by sampling a voltage induced in the at least one stator winding by the alternating current flowing in the rotor winding at a predetermined first phase of the excitation current, and c) deciding that the resolver is defective when the first sampling voltage value deviates significantly from a DC component of the induced voltage.

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First Claim