Double Buffered Angular Speed Measurement Method for Self-Calibration of Magnetoresistive Sensors

Angle sensors with magnetoresistive (MR) technology (TMR, GMR, and AMR) are also used within industrial and consumer applications, such as gimbals, drones, and robotics, where accurate angle measurement is required, so MR sensors have to be calibrated. End-of-line calibration is time consuming, expensive and relatively short-lived in mechanical devices, so continuous self-calibration is performed instead, using linear and harmonic compensation based on the angular speed of the shaft measured by the most accurate double buffered method.