RESOLVER DIGITAL CONVERTER AND METHOD COMPENSATING PHASE THEREOF

摘要

PURPOSE: A resolver digital converter and a method compensating phase thereof are provided to compensate a position measurement error due to phase delay by compensating the phase the output signal from a resolver. CONSTITUTION: A resolver(110) detects an output signal which is changed according to the angular displacement of a rotor. A sinusoidal wave generator(120) generates sinusoidal wave to apply created sinusoidal wave to the resolver. A current amplifier(130) amplifies the current of the created sinusoidal wave and applies it to the resolver. A phase compensator(140) generates a phase compensation signal to make the phase of the created sinusoidal wave same as the phase of the signal outputted from the resolver. A resolver digital conversion circuit(150) converts the phase information of the resolver into a digital signal by using the creased phase compensation signal and the outputted signal from the resolver.