A New Way of Resolver to Digital Converter in a Steady System

This paper presents a simple method to detect the phase of a rotor based on the resolver equipped motor in a steady status. There are three pulses signals which are used to produce the phase edge at 0 degree, 90 degrees, 180 degrees and 360 degrees. This can be used to reset the integrator which is used to integrate the phase differences. Meanwhile the carrier edge can be used to counted as the phase angle of rotor. When the system is in a steady status it is easy to get the phase angle by using a digital counter.