A digital tracking R/D converter with hardware error calculation using a TMS320C14

The resolver is a very robust and cost-effective angular position transducer. The outputs can be transmitted through very long distances, without severe corruption by noise, before being processed. A resolver to digital converter is designed, using the TMS320C14 digital signal processing microcomputer, to provide absolute angular position and velocity information for digital servo control systems. The converter is substantially implemented in software as a replacement for the resolver to digital converter ICs normally used. The demodulation and error calculation functions are performed in hardware to optimise the low speed performance of the system. The paper describes the development of the converter algorithm and the error calculation hardware. Results of both simulation and the experimental converter system are presented