Resolver signal processing device, drive device, resolver signal processing method, and program

摘要

The resolver signal processing apparatus of one aspect of the embodiment includes an output signal state detection unit and a disconnection detection unit. The output signal state detection unit calculates the sum of squares of the A-phase signal and B-phase signal of the output signal based on the output signal of the two-phase output type resolver. The disconnection identification unit includes information indicating a disconnection state of any one of a first signal system supplying an excitation signal of the resolver and a second signal system of the output signal based on the magnitude of the fluctuation width at which the sum of squares periodically fluctuates. Prints.