Simulation on the angular velocity and displacement measuring system based on DSRF-PLL

This paper presents a Resolver-to-Digital Converter decoding arithmetic for detecting the velocity and driving distance of automobiles. The application deals with dual synchronous reference frame-based phase-locked loop(DSRF-PLL) to transform the sine and cosine output signals of a resolver into the double SRF(DSRF), from which a decoupling cell(DC) added to attenuate oscillations caused by DSRF. It can extract the angular velocity and displacement accurately and stably, even though the gain and phase errors in sine and cosine output signals. Above all, the analytical study on this system is conducted, and a new DSRF-PLL scheme is showed in this paper. Finally, simulation results under distorted signals conditions are obtained by SIMULINK to prove its utility.