Design of Synchro Resolver-to-Digital Converter Based on PXI Bus

PXI is the expansion of PCI in instrument field. It has formed a rule of mechanism, electric and software which can be applied to the field of testing, measuring and data-sampling. The digital converter module of synchro resolver-to-digital converter converts analog angle signals into digital signals, then connects to computer by PXI. Thus the intelligence of the instrument can be realized. In this paper, the work principle, hardware configuration and software design of synchro resolver-to-digital converter are described.