Digital Angle Sensor Self-Calibration: Two Approaches to Accuracy Increasing

Digital angle sensors built on multipole resolvers and angle-to-digital converters have found a wide application in mission-critical systems operating in severe environment and determine their accuracy and efficiency to a significant extent. A method for self-calibration of digital angle sensors based on integration of two conversion channels with the errors of different spectrums is suggested. Two approaches specially intended to increase the accuracy of self-calibration for the case of high initial errors of the channels are discussed. The results of the simulation and experiment are presented.