APPARATUS FOR CORRECTING THE RDC ERROR OF THE MULTI-SPEED SYSTEM FOR VERY-HIGH-RESOLUTION APPLICATION

摘要

An RDC(Resolver to Digital Converter) error correcting device in a multi-speed system for high resolution application is provided to improve reliability of military equipment requiring high resolution performance of resolver and to reduce the number of other parts by using a commercial two-channel RDC chip. A two-channel RDC error correcting device in a multi-speed system for high resolution application for processing an input analog angle value by fine and coarse synchro channels is composed of: a first noise removing unit(201) receiving an analog-type sine waveform and cutting off noise of the input signal; a crossover sensing unit(204) detecting a crossover and outputting the result by receiving signals processed in the fine and coarse synchro channels; an error processing unit(205) processing an error by comparing the signal received from the crossover sensing unit with an output signal of the first noise removing unit; and an up-down counter(206) for receiving the output signal of the error processing unit and outputting a finally corrected digital signal.