INTERFACE CIRCUIT FOR DETECTING FAILURE IN RESOLVER AND METHOD FOR DETECTING FAILURE USING SAME

摘要

The present invention relates to an interface circuit for detecting a failure in a resolver, comprising: a resolver to output a sign signal and a cosign signal in a common mode signal by connecting a middle point of a stator coil of a first output terminal of the sign signal to a middle point of a stator coil of a second output terminal of the cosign signal; and a resolver failure detecting interface unit to input the sign signal and the cosign signal in the common mode signal, to adjust gains and offsets of the sign signal and the cosign signal to adjust the sign signal and the cosign signal at a level suitable for being supplied to an analog-digital converting terminal of a micom, and to pass only high-frequency components of the sign signal and the cosign signal.;COPYRIGHT KIPO 2015