RESOLVER DIGITAL CONVERTER

PROBLEM TO BE SOLVED: To provide a resolver digital converter for removing noise while suppressing detection errors. SOLUTION: The resolver digital converter includes: a switched capacitor filter to which a sin-phase signal and a cos-phase signal from a resolver are input; an arithmetic processing means arithmetically processing an output of the switched capacitor filter and outputting an angle signal; and a PLL (Phase-Locked Loop) circuit to which an excitation signal for magnetically exciting the resolver is input. The switched capacitor filter is driven by a VCO (Voltage-Controlled Oscillator) included in the PLL circuit. COPYRIGHT: (C)2010,JPO&INPIT