METHOD FOR CALIBRATING A ROTARY ENCODER, AND ROTARY ENCODER FOR DETERMINING A CORRECTED ANGULAR POSITION

The invention relates to a method for calibrating (40) a rotary encoder (6) for measuring a rotary angle position of a machine shaft (4), wherein the rotary encoder (6) has at least one exciter unit (61) which is rotationally fixedly connected to the machine shaft (4) and by means of which at least one measuring point (61a, 61b, 61c, 61d) is defined to measure an actual rotary angle position (72),and a stationary sensor unit (62) interacting functionally with the exciter unit (61), comprising the following steps: setting (32) the machine shaft (4) moving rotationally, measuring (33) a start measuring point (61a), activating a timer module (65) for incrementing a time value (t), measuring (35) at least one intermediate measuring point (61b, 61c), the intermediate measuring point (61b, 61c)measured first being assigned a time value (t) that has been incremented at the measurement time, storing (36) the rotary angle position (72) of the intermediate measuring point (61b, 61c) and the associated time value (t), m